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annotate src/events/SDL_gesture.c @ 4865:fff50e86c891

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Update VS2010 project to add new files; update new files so code builds on Win32/Win64
author Andreas Schiffler <aschiffler@ferzkopp.net>
date Mon, 23 Aug 2010 23:44:28 -0700
parents f9ab8df6d45a
children d6adaafcfb10
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
eed063a0bf5b Moved Multi finger gesture recognition into the library.
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software Founation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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17
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18 Sam Lantinga
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19 slouken@libsdl.org
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20 */
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21
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22 #include "SDL_config.h"
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23
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24 /* General mouse handling code for SDL */
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25
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26 #include "SDL_events.h"
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27 #include "SDL_events_c.h"
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28 #include "SDL_gesture_c.h"
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29
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30 #include <memory.h>
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31 #include <string.h>
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32 #include <stdio.h>
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33 #include <math.h>
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34
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35 //TODO: Replace with malloc
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36
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37 #define MAXPATHSIZE 1024
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38
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39
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40
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41
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42 #define DOLLARNPOINTS 64
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43 #define DOLLARSIZE 256
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44
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45 #define ENABLE_DOLLAR
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46
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47 //PHI = ((sqrt(5)-1)/2)
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48 #define PHI 0.618033989
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49
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50 typedef struct {
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51 float x,y;
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52 } SDL_FloatPoint;
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53
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54 typedef struct {
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55 float length;
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56
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57 int numPoints;
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58 SDL_FloatPoint p[MAXPATHSIZE];
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59 } SDL_DollarPath;
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60
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61 typedef struct {
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62 SDL_FloatPoint path[DOLLARNPOINTS];
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63 unsigned long hash;
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64 } SDL_DollarTemplate;
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66 typedef struct {
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67 SDL_GestureID id;
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68 SDL_FloatPoint res;
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69 SDL_FloatPoint centroid;
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70 SDL_DollarPath dollarPath;
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71 Uint16 numDownFingers;
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72
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73 int numDollarTemplates;
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74 SDL_DollarTemplate *dollarTemplate;
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75
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76 SDL_bool recording;
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77 } SDL_GestureTouch;
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78
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79 SDL_GestureTouch *SDL_gestureTouch;
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80 int SDL_numGestureTouches = 0;
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81 SDL_bool recordAll;
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82
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83 void SDL_PrintPath(SDL_FloatPoint *path) {
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84 int i;
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85 printf("Path:");
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86 for(i=0;i<DOLLARNPOINTS;i++) {
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87 printf(" (%f,%f)",path[i].x,path[i].y);
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88 }
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89 printf("\n");
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90 }
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91
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92 int SDL_RecordGesture(SDL_TouchID touchId) {
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93 int i;
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94 if(touchId < 0) recordAll = SDL_TRUE;
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95 for(i = 0;i < SDL_numGestureTouches; i++) {
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96 if((touchId < 0) || (SDL_gestureTouch[i].id == touchId)) {
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97 SDL_gestureTouch[i].recording = SDL_TRUE;
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98 if(touchId >= 0)
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99 return 1;
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100 }
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101 }
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102 return (touchId < 0);
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103 }
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104
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105 unsigned long SDL_HashDollar(SDL_FloatPoint* points) {
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106 unsigned long hash = 5381;
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107 int i;
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108 for(i = 0;i < DOLLARNPOINTS; i++) {
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109 hash = ((hash<<5) + hash) + (unsigned long)points[i].x;
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110 hash = ((hash<<5) + hash) + (unsigned long)points[i].y;
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111 }
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112 return hash;
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113 }
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114
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115
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116 static int SaveTemplate(SDL_DollarTemplate *templ, SDL_RWops * src) {
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117 if(src == NULL) return 0;
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118
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119
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120 //No Longer storing the Hash, rehash on load
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121 //if(SDL_RWops.write(src,&(templ->hash),sizeof(templ->hash),1) != 1) return 0;
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122
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123 if(SDL_RWwrite(src,templ->path,
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124 sizeof(templ->path[0]),DOLLARNPOINTS) != DOLLARNPOINTS)
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125 return 0;
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126
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127 return 1;
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128 }
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129
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130
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131 int SDL_SaveAllDollarTemplates(SDL_RWops *src) {
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132 int i,j,rtrn = 0;
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133 for(i = 0; i < SDL_numGestureTouches; i++) {
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134 SDL_GestureTouch* touch = &SDL_gestureTouch[i];
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135 for(j = 0;j < touch->numDollarTemplates; j++) {
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136 rtrn += SaveTemplate(&touch->dollarTemplate[i],src);
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137 }
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138 }
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139 return rtrn;
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140 }
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141
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142 int SDL_SaveDollarTemplate(SDL_GestureID gestureId, SDL_RWops *src) {
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143 int i,j;
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144 for(i = 0; i < SDL_numGestureTouches; i++) {
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145 SDL_GestureTouch* touch = &SDL_gestureTouch[i];
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146 for(j = 0;j < touch->numDollarTemplates; j++) {
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147 if(touch->dollarTemplate[i].hash == gestureId) {
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148 return SaveTemplate(&touch->dollarTemplate[i],src);
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149 }
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150 }
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151 }
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152 SDL_SetError("Unknown gestureId");
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153 return -1;
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154 }
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155
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156 //path is an already sampled set of points
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157 //Returns the index of the gesture on success, or -1
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158 static int SDL_AddDollarGesture(SDL_GestureTouch* inTouch,SDL_FloatPoint* path) {
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159 SDL_DollarTemplate* dollarTemplate;
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160 SDL_DollarTemplate *templ;
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161 int i = 0;
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162 if(inTouch == NULL) {
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163 if(SDL_numGestureTouches == 0) return -1;
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164 for(i = 0;i < SDL_numGestureTouches; i++) {
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165 inTouch = &SDL_gestureTouch[i];
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166
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167 dollarTemplate =
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168 (SDL_DollarTemplate *)SDL_realloc(inTouch->dollarTemplate,
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169 (inTouch->numDollarTemplates + 1) *
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170 sizeof(SDL_DollarTemplate));
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171 if(!dollarTemplate) {
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172 SDL_OutOfMemory();
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173 return -1;
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174 }
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175
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176 inTouch->dollarTemplate = dollarTemplate;
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177
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178 templ =
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179 &inTouch->dollarTemplate[inTouch->numDollarTemplates];
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180 memcpy(templ->path,path,DOLLARNPOINTS*sizeof(SDL_FloatPoint));
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181 templ->hash = SDL_HashDollar(templ->path);
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182 inTouch->numDollarTemplates++;
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183 }
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184 return inTouch->numDollarTemplates - 1;
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185 } else {
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186 SDL_DollarTemplate* dollarTemplate =
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187 ( SDL_DollarTemplate *)SDL_realloc(inTouch->dollarTemplate,
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188 (inTouch->numDollarTemplates + 1) *
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189 sizeof(SDL_DollarTemplate));
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190 if(!dollarTemplate) {
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191 SDL_OutOfMemory();
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192 return -1;
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193 }
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194
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195 inTouch->dollarTemplate = dollarTemplate;
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196
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197 templ =
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198 &inTouch->dollarTemplate[inTouch->numDollarTemplates];
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199 memcpy(templ->path,path,DOLLARNPOINTS*sizeof(SDL_FloatPoint));
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200 templ->hash = SDL_HashDollar(templ->path);
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201 inTouch->numDollarTemplates++;
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202 return inTouch->numDollarTemplates - 1;
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203 }
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204 return -1;
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205 }
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206
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207 int SDL_LoadDollarTemplates(SDL_TouchID touchId, SDL_RWops *src) {
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208 int i,loaded = 0;
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209 SDL_GestureTouch *touch = NULL;
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210 if(src == NULL) return 0;
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211 if(touchId >= 0) {
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212 for(i = 0;i < SDL_numGestureTouches; i++)
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213 if(SDL_gestureTouch[i].id == touchId)
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214 touch = &SDL_gestureTouch[i];
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215 if(touch == NULL) return -1;
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216 }
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217
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218 while(1) {
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219 SDL_DollarTemplate templ;
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220
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221 if(SDL_RWread(src,templ.path,sizeof(templ.path[0]),DOLLARNPOINTS) <
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222 DOLLARNPOINTS) break;
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223
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224 if(touchId >= 0) {
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225 printf("Adding loaded gesture to 1 touch\n");
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226 if(SDL_AddDollarGesture(touch,templ.path)) loaded++;
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227 }
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228 else {
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229 printf("Adding to: %i touches\n",SDL_numGestureTouches);
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230 for(i = 0;i < SDL_numGestureTouches; i++) {
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231 touch = &SDL_gestureTouch[i];
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232 printf("Adding loaded gesture to + touches\n");
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233 //TODO: What if this fails?
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234 SDL_AddDollarGesture(touch,templ.path);
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235 }
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236 loaded++;
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237 }
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238 }
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239
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240 return loaded;
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241 }
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242
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243
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244 float dollarDifference(SDL_FloatPoint* points,SDL_FloatPoint* templ,float ang) {
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245 // SDL_FloatPoint p[DOLLARNPOINTS];
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246 float dist = 0;
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247 SDL_FloatPoint p;
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248 int i;
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249 for(i = 0; i < DOLLARNPOINTS; i++) {
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250 p.x = (float)(points[i].x * cos(ang) - points[i].y * sin(ang));
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251 p.y = (float)(points[i].x * sin(ang) + points[i].y * cos(ang));
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252 dist += (float)(sqrt((p.x-templ[i].x)*(p.x-templ[i].x)+
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253 (p.y-templ[i].y)*(p.y-templ[i].y)));
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254 }
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255 return dist/DOLLARNPOINTS;
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256
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257 }
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258
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259 float bestDollarDifference(SDL_FloatPoint* points,SDL_FloatPoint* templ) {
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260 //------------BEGIN DOLLAR BLACKBOX----------------//
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261 //-TRANSLATED DIRECTLY FROM PSUDEO-CODE AVAILABLE AT-//
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262 //-"http://depts.washington.edu/aimgroup/proj/dollar/"-//
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263 double ta = -M_PI/4;
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264 double tb = M_PI/4;
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265 double dt = M_PI/90;
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266 float x1 = (float)(PHI*ta + (1-PHI)*tb);
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267 float f1 = dollarDifference(points,templ,x1);
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268 float x2 = (float)((1-PHI)*ta + PHI*tb);
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269 float f2 = dollarDifference(points,templ,x2);
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270 while(fabs(ta-tb) > dt) {
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271 if(f1 < f2) {
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272 tb = x2;
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273 x2 = x1;
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274 f2 = f1;
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275 x1 = (float)(PHI*ta + (1-PHI)*tb);
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276 f1 = dollarDifference(points,templ,x1);
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277 }
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278 else {
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279 ta = x1;
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280 x1 = x2;
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281 f1 = f2;
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282 x2 = (float)((1-PHI)*ta + PHI*tb);
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283 f2 = dollarDifference(points,templ,x2);
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284 }
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285 }
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286 /*
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287 if(f1 <= f2)
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288 printf("Min angle (x1): %f\n",x1);
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289 else if(f1 > f2)
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290 printf("Min angle (x2): %f\n",x2);
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291 */
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292 return SDL_min(f1,f2);
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293 }
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294
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295 //DollarPath contains raw points, plus (possibly) the calculated length
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296 int dollarNormalize(SDL_DollarPath path,SDL_FloatPoint *points) {
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297 int i;
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298 float interval;
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299 float dist;
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300 int numPoints = 0;
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301 SDL_FloatPoint centroid;
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302 float xmin,xmax,ymin,ymax;
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303 float ang;
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304 float w,h;
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305
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306 //Calculate length if it hasn't already been done
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307 if(path.length <= 0) {
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308 for(i=1;i<path.numPoints;i++) {
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309 float dx = path.p[i ].x -
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310 path.p[i-1].x;
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311 float dy = path.p[i ].y -
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312 path.p[i-1].y;
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313 path.length += (float)(sqrt(dx*dx+dy*dy));
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314 }
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315 }
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316
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317 //Resample
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318 interval = path.length/(DOLLARNPOINTS - 1);
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319 dist = interval;
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320
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321 centroid.x = 0;centroid.y = 0;
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322
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323 //printf("(%f,%f)\n",path.p[path.numPoints-1].x,path.p[path.numPoints-1].y);
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324 for(i = 1;i < path.numPoints;i++) {
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325 float d = (float)(sqrt((path.p[i-1].x-path.p[i].x)*(path.p[i-1].x-path.p[i].x)+
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326 (path.p[i-1].y-path.p[i].y)*(path.p[i-1].y-path.p[i].y)));
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327 //printf("d = %f dist = %f/%f\n",d,dist,interval);
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328 while(dist + d > interval) {
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329 points[numPoints].x = path.p[i-1].x +
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330 ((interval-dist)/d)*(path.p[i].x-path.p[i-1].x);
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331 points[numPoints].y = path.p[i-1].y +
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332 ((interval-dist)/d)*(path.p[i].y-path.p[i-1].y);
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333 centroid.x += points[numPoints].x;
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334 centroid.y += points[numPoints].y;
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335 numPoints++;
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336
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337 dist -= interval;
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338 }
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339 dist += d;
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340 }
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341 if(numPoints < DOLLARNPOINTS-1) {
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342 printf("ERROR: NumPoints = %i\n",numPoints);
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343 return 0;
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344 }
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345 //copy the last point
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346 points[DOLLARNPOINTS-1] = path.p[path.numPoints-1];
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347 numPoints = DOLLARNPOINTS;
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348
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349 centroid.x /= numPoints;
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350 centroid.y /= numPoints;
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351
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352 //printf("Centroid (%f,%f)",centroid.x,centroid.y);
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353 //Rotate Points so point 0 is left of centroid and solve for the bounding box
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354 xmin = centroid.x;
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355 xmax = centroid.x;
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356 ymin = centroid.y;
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357 ymax = centroid.y;
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358
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359 ang = (float)(atan2(centroid.y - points[0].y,
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360 centroid.x - points[0].x));
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361
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362 for(i = 0;i<numPoints;i++) {
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363 float px = points[i].x;
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364 float py = points[i].y;
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365 points[i].x = (float)((px - centroid.x)*cos(ang) -
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366 (py - centroid.y)*sin(ang) + centroid.x);
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367 points[i].y = (float)((px - centroid.x)*sin(ang) +
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368 (py - centroid.y)*cos(ang) + centroid.y);
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369
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370
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371 if(points[i].x < xmin) xmin = points[i].x;
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372 if(points[i].x > xmax) xmax = points[i].x;
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373 if(points[i].y < ymin) ymin = points[i].y;
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374 if(points[i].y > ymax) ymax = points[i].y;
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375 }
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376
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377 //Scale points to DOLLARSIZE, and translate to the origin
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378 w = xmax-xmin;
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379 h = ymax-ymin;
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380
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381 for(i=0;i<numPoints;i++) {
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parents: 4657
diff changeset
382 points[i].x = (points[i].x - centroid.x)*DOLLARSIZE/w;
454385d76845 Moved $1 Gestures into the SDL Library
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diff changeset
383 points[i].y = (points[i].y - centroid.y)*DOLLARSIZE/h;
454385d76845 Moved $1 Gestures into the SDL Library
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diff changeset
384 }
454385d76845 Moved $1 Gestures into the SDL Library
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diff changeset
385 return numPoints;
454385d76845 Moved $1 Gestures into the SDL Library
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diff changeset
386 }
454385d76845 Moved $1 Gestures into the SDL Library
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parents: 4657
diff changeset
387
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
388 float dollarRecognize(SDL_DollarPath path,int *bestTempl,SDL_GestureTouch* touch) {
4663
56a2d70de945 Started trying to build gesture code for iPhone
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diff changeset
389
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
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parents: 4686
diff changeset
390 SDL_FloatPoint points[DOLLARNPOINTS];
4663
56a2d70de945 Started trying to build gesture code for iPhone
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diff changeset
391 int numPoints = dollarNormalize(path,points);
4686
463cd74304b9 Removed some debug prints.
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diff changeset
392 //SDL_PrintPath(points);
4663
56a2d70de945 Started trying to build gesture code for iPhone
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diff changeset
393 int i;
56a2d70de945 Started trying to build gesture code for iPhone
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parents: 4659
diff changeset
394
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parents: 4689
diff changeset
395 float bestDiff = 10000;
4663
56a2d70de945 Started trying to build gesture code for iPhone
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diff changeset
396 *bestTempl = -1;
56a2d70de945 Started trying to build gesture code for iPhone
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parents: 4659
diff changeset
397 for(i = 0;i < touch->numDollarTemplates;i++) {
4865
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parents: 4689
diff changeset
398 float diff = bestDollarDifference(points,touch->dollarTemplate[i].path);
4663
56a2d70de945 Started trying to build gesture code for iPhone
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parents: 4659
diff changeset
399 if(diff < bestDiff) {bestDiff = diff; *bestTempl = i;}
56a2d70de945 Started trying to build gesture code for iPhone
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parents: 4659
diff changeset
400 }
56a2d70de945 Started trying to build gesture code for iPhone
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parents: 4659
diff changeset
401 return bestDiff;
56a2d70de945 Started trying to build gesture code for iPhone
Sam Lantinga <slouken@libsdl.org>
parents: 4659
diff changeset
402 }
56a2d70de945 Started trying to build gesture code for iPhone
Sam Lantinga <slouken@libsdl.org>
parents: 4659
diff changeset
403
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
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parents: 4686
diff changeset
404 int SDL_GestureAddTouch(SDL_Touch* touch) {
4865
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parents: 4689
diff changeset
405 SDL_GestureTouch *gestureTouch = (SDL_GestureTouch *)SDL_realloc(SDL_gestureTouch,
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
406 (SDL_numGestureTouches + 1) *
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
407 sizeof(SDL_GestureTouch));
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
408
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
409 if(!gestureTouch) {
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
410 SDL_OutOfMemory();
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
411 return -1;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
412 }
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
413
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
414 SDL_gestureTouch = gestureTouch;
4657
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parents:
diff changeset
415
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
416 SDL_gestureTouch[SDL_numGestureTouches].res.x = touch->xres;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
417 SDL_gestureTouch[SDL_numGestureTouches].res.y = touch->yres;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
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parents: 4686
diff changeset
418 SDL_gestureTouch[SDL_numGestureTouches].numDownFingers = 0;
4657
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parents:
diff changeset
419
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
420 SDL_gestureTouch[SDL_numGestureTouches].res.x = touch->xres;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
421 SDL_gestureTouch[SDL_numGestureTouches].id = touch->id;
4658
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parents: 4657
diff changeset
422
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
423 SDL_gestureTouch[SDL_numGestureTouches].numDollarTemplates = 0;
4659
063b9455bd1a Added some files I had previosuly missed
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parents: 4658
diff changeset
424
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
425 SDL_gestureTouch[SDL_numGestureTouches].recording = SDL_FALSE;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
426
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
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parents: 4686
diff changeset
427 SDL_numGestureTouches++;
4657
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diff changeset
428 return 0;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
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parents:
diff changeset
429 }
eed063a0bf5b Moved Multi finger gesture recognition into the library.
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parents:
diff changeset
430
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
431 int SDL_GestureRemoveTouch(SDL_TouchID id) {
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
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parents:
diff changeset
432 int i;
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
433 for(i = 0;i < SDL_numGestureTouches; i++) {
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
434 if(SDL_gestureTouch[i].id == id) {
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
435 SDL_numGestureTouches--;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
436 SDL_gestureTouch[i] = SDL_gestureTouch[SDL_numGestureTouches];
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
437 return 1;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
438 }
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
439 }
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
440 return -1;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
441 }
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
442
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
443
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
444 SDL_GestureTouch * SDL_GetGestureTouch(SDL_TouchID id) {
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
445 int i;
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
446 for(i = 0;i < SDL_numGestureTouches; i++) {
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
447 //printf("%i ?= %i\n",SDL_gestureTouch[i].id,id);
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
448 if(SDL_gestureTouch[i].id == id) return &SDL_gestureTouch[i];
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
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diff changeset
449 }
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
450 return NULL;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
451 }
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
452
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
453 int SDL_SendGestureMulti(SDL_GestureTouch* touch,float dTheta,float dDist) {
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
454 SDL_Event event;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
455 event.mgesture.type = SDL_MULTIGESTURE;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
456 event.mgesture.touchId = touch->id;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
457 event.mgesture.x = touch->centroid.x;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
458 event.mgesture.y = touch->centroid.y;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
459 event.mgesture.dTheta = dTheta;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
460 event.mgesture.dDist = dDist;
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
461 event.mgesture.numFingers = touch->numDownFingers;
4657
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parents:
diff changeset
462 return SDL_PushEvent(&event) > 0;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
463 }
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
464
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
465 int SDL_SendGestureDollar(SDL_GestureTouch* touch,
4678
f8431f66613d Added SDL_TouchID, SDL_FingerID, SDL_GestureID types. Converted to integer cioordinates (<- not working).
jimtla
parents: 4665
diff changeset
466 SDL_GestureID gestureId,float error) {
4658
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
467 SDL_Event event;
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
468 event.dgesture.type = SDL_DOLLARGESTURE;
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
469 event.dgesture.touchId = touch->id;
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
470 /*
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
471 //TODO: Add this to give location of gesture?
454385d76845 Moved $1 Gestures into the SDL Library
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parents: 4657
diff changeset
472 event.mgesture.x = touch->centroid.x;
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
473 event.mgesture.y = touch->centroid.y;
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
474 */
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
475 event.dgesture.gestureId = gestureId;
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
476 event.dgesture.error = error;
4689
f9ab8df6d45a Added README.touch and README.gesture. Moved touchtest/gestureSDLTest to test/testgesture
Jim Grandpre <jim.tla@gmail.com>
parents: 4688
diff changeset
477 //A finger came up to trigger this event.
f9ab8df6d45a Added README.touch and README.gesture. Moved touchtest/gestureSDLTest to test/testgesture
Jim Grandpre <jim.tla@gmail.com>
parents: 4688
diff changeset
478 event.dgesture.numFingers = touch->numDownFingers + 1;
4658
454385d76845 Moved $1 Gestures into the SDL Library
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parents: 4657
diff changeset
479 return SDL_PushEvent(&event) > 0;
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
480 }
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
481
4659
063b9455bd1a Added some files I had previosuly missed
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parents: 4658
diff changeset
482
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
483 int SDL_SendDollarRecord(SDL_GestureTouch* touch,SDL_GestureID gestureId) {
4659
063b9455bd1a Added some files I had previosuly missed
Jim Grandpre <jim.tla@gmail.com>
parents: 4658
diff changeset
484 SDL_Event event;
063b9455bd1a Added some files I had previosuly missed
Jim Grandpre <jim.tla@gmail.com>
parents: 4658
diff changeset
485 event.dgesture.type = SDL_DOLLARRECORD;
063b9455bd1a Added some files I had previosuly missed
Jim Grandpre <jim.tla@gmail.com>
parents: 4658
diff changeset
486 event.dgesture.touchId = touch->id;
063b9455bd1a Added some files I had previosuly missed
Jim Grandpre <jim.tla@gmail.com>
parents: 4658
diff changeset
487 event.dgesture.gestureId = gestureId;
063b9455bd1a Added some files I had previosuly missed
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parents: 4658
diff changeset
488 return SDL_PushEvent(&event) > 0;
063b9455bd1a Added some files I had previosuly missed
Jim Grandpre <jim.tla@gmail.com>
parents: 4658
diff changeset
489 }
063b9455bd1a Added some files I had previosuly missed
Jim Grandpre <jim.tla@gmail.com>
parents: 4658
diff changeset
490
063b9455bd1a Added some files I had previosuly missed
Jim Grandpre <jim.tla@gmail.com>
parents: 4658
diff changeset
491
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
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diff changeset
492 void SDL_GestureProcessEvent(SDL_Event* event)
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
493 {
4865
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parents: 4689
diff changeset
494 float x,y;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
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parents: 4689
diff changeset
495 SDL_FloatPoint path[DOLLARNPOINTS];
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
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parents: 4689
diff changeset
496 int index;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
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parents: 4689
diff changeset
497 int i;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
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parents: 4689
diff changeset
498 float pathDx, pathDy;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
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parents: 4689
diff changeset
499 SDL_FloatPoint lastP;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
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parents: 4689
diff changeset
500 SDL_FloatPoint lastCentroid;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
501 float lDist;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
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parents: 4689
diff changeset
502 float Dist;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
503 float dtheta;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
504 float dDist;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
505
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
506 if(event->type == SDL_FINGERMOTION ||
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
507 event->type == SDL_FINGERDOWN ||
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
508 event->type == SDL_FINGERUP) {
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
509 SDL_GestureTouch* inTouch = SDL_GetGestureTouch(event->tfinger.touchId);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
510
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
511 //Shouldn't be possible
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
512 if(inTouch == NULL) return;
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
513
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
514 //printf("@ (%i,%i) with res: (%i,%i)\n",(int)event->tfinger.x,
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
515 // (int)event->tfinger.y,
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
516 // (int)inTouch->res.x,(int)inTouch->res.y);
4658
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
517
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
518
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
519 x = ((float)event->tfinger.x)/(float)inTouch->res.x;
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
520 y = ((float)event->tfinger.y)/(float)inTouch->res.y;
4658
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
521
454385d76845 Moved $1 Gestures into the SDL Library
Jim Grandpre <jim.tla@gmail.com>
parents: 4657
diff changeset
522
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
523 //Finger Up
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
524 if(event->type == SDL_FINGERUP) {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
525 inTouch->numDownFingers--;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
526
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
527 #ifdef ENABLE_DOLLAR
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
528 if(inTouch->recording) {
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
529 inTouch->recording = SDL_FALSE;
4684
f47c2640c667 Re-enabled dollar gesture
Jim Grandpre <jim.tla@gmail.com>
parents: 4683
diff changeset
530 dollarNormalize(inTouch->dollarPath,path);
4686
463cd74304b9 Removed some debug prints.
Jim Grandpre <jim.tla@gmail.com>
parents: 4685
diff changeset
531 //SDL_PrintPath(path);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
532 if(recordAll) {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
533 index = SDL_AddDollarGesture(NULL,path);
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
534 for(i = 0;i < SDL_numGestureTouches; i++)
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
535 SDL_gestureTouch[i].recording = SDL_FALSE;
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
536 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
537 else {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
538 index = SDL_AddDollarGesture(inTouch,path);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
539 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
540
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
541 if(index >= 0) {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
542 SDL_SendDollarRecord(inTouch,inTouch->dollarTemplate[index].hash);
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
543 }
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
544 else {
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
545 SDL_SendDollarRecord(inTouch,-1);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
546 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
547 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
548 else {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
549 int bestTempl;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
550 float error;
4684
f47c2640c667 Re-enabled dollar gesture
Jim Grandpre <jim.tla@gmail.com>
parents: 4683
diff changeset
551 error = dollarRecognize(inTouch->dollarPath,
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
552 &bestTempl,inTouch);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
553 if(bestTempl >= 0){
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
554 //Send Event
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
555 unsigned long gestureId = inTouch->dollarTemplate[bestTempl].hash;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
556 SDL_SendGestureDollar(inTouch,gestureId,error);
4684
f47c2640c667 Re-enabled dollar gesture
Jim Grandpre <jim.tla@gmail.com>
parents: 4683
diff changeset
557 //printf ("%s\n",);("Dollar error: %f\n",error);
4657
eed063a0bf5b Moved Multi finger gesture recognition into the library.
Jim Grandpre <jim.tla@gmail.com>
parents:
diff changeset
558 }
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
559 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
560 #endif
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
561 //inTouch->gestureLast[j] = inTouch->gestureLast[inTouch->numDownFingers];
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
562 if(inTouch->numDownFingers > 0) {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
563 inTouch->centroid.x = (inTouch->centroid.x*(inTouch->numDownFingers+1)-
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
564 x)/inTouch->numDownFingers;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
565 inTouch->centroid.y = (inTouch->centroid.y*(inTouch->numDownFingers+1)-
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
566 y)/inTouch->numDownFingers;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
567 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
568 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
569 else if(event->type == SDL_FINGERMOTION) {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
570 float dx = ((float)event->tfinger.dx)/(float)inTouch->res.x;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
571 float dy = ((float)event->tfinger.dy)/(float)inTouch->res.y;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
572 //printf("dx,dy: (%f,%f)\n",dx,dy);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
573 #ifdef ENABLE_DOLLAR
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
574 SDL_DollarPath* path = &inTouch->dollarPath;
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
575 if(path->numPoints < MAXPATHSIZE) {
4684
f47c2640c667 Re-enabled dollar gesture
Jim Grandpre <jim.tla@gmail.com>
parents: 4683
diff changeset
576 path->p[path->numPoints].x = inTouch->centroid.x;
f47c2640c667 Re-enabled dollar gesture
Jim Grandpre <jim.tla@gmail.com>
parents: 4683
diff changeset
577 path->p[path->numPoints].y = inTouch->centroid.y;
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
578 pathDx =
4685
e0c3b09368a6 Fixed Dollar Recognition.
Jim Grandpre <jim.tla@gmail.com>
parents: 4684
diff changeset
579 (path->p[path->numPoints].x-path->p[path->numPoints-1].x);
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
580 pathDy =
4685
e0c3b09368a6 Fixed Dollar Recognition.
Jim Grandpre <jim.tla@gmail.com>
parents: 4684
diff changeset
581 (path->p[path->numPoints].y-path->p[path->numPoints-1].y);
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
582 path->length += (float)sqrt(pathDx*pathDx + pathDy*pathDy);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
583 path->numPoints++;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
584 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
585 #endif
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
586 lastP.x = x - dx;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
587 lastP.y = y - dy;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
588 lastCentroid = inTouch->centroid;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
589
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
590 inTouch->centroid.x += dx/inTouch->numDownFingers;
4685
e0c3b09368a6 Fixed Dollar Recognition.
Jim Grandpre <jim.tla@gmail.com>
parents: 4684
diff changeset
591 inTouch->centroid.y += dy/inTouch->numDownFingers;
e0c3b09368a6 Fixed Dollar Recognition.
Jim Grandpre <jim.tla@gmail.com>
parents: 4684
diff changeset
592 //printf("Centrid : (%f,%f)\n",inTouch->centroid.x,inTouch->centroid.y);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
593 if(inTouch->numDownFingers > 1) {
4688
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
594 SDL_FloatPoint lv; //Vector from centroid to last x,y position
494f71f57a80 Fixed bugs related to keyboard handling in gestureSDLTest. Fixed gesture code (dynamic memory allocation). Cleaned up gesture and test code.
Jim Grandpre <jim.tla@gmail.com>
parents: 4686
diff changeset
595 SDL_FloatPoint v; //Vector from centroid to current x,y position
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
596 //lv = inTouch->gestureLast[j].cv;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
597 lv.x = lastP.x - lastCentroid.x;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
598 lv.y = lastP.y - lastCentroid.y;
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
599 lDist = (float)sqrt(lv.x*lv.x + lv.y*lv.y);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
600 //printf("lDist = %f\n",lDist);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
601 v.x = x - inTouch->centroid.x;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
602 v.y = y - inTouch->centroid.y;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
603 //inTouch->gestureLast[j].cv = v;
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
604 Dist = (float)sqrt(v.x*v.x+v.y*v.y);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
605 // cos(dTheta) = (v . lv)/(|v| * |lv|)
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
606
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
607 //Normalize Vectors to simplify angle calculation
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
608 lv.x/=lDist;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
609 lv.y/=lDist;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
610 v.x/=Dist;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
611 v.y/=Dist;
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
612 dtheta = (float)atan2(lv.x*v.y - lv.y*v.x,lv.x*v.x + lv.y*v.y);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
613
4865
fff50e86c891 Update VS2010 project to add new files; update new files so code builds on Win32/Win64
Andreas Schiffler <aschiffler@ferzkopp.net>
parents: 4689
diff changeset
614 dDist = (Dist - lDist);
4683
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
615 if(lDist == 0) {dDist = 0;dtheta = 0;} //To avoid impossible values
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
616
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
617 //inTouch->gestureLast[j].dDist = dDist;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
618 //inTouch->gestureLast[j].dtheta = dtheta;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
619
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
620 //printf("dDist = %f, dTheta = %f\n",dDist,dtheta);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
621 //gdtheta = gdtheta*.9 + dtheta*.1;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
622 //gdDist = gdDist*.9 + dDist*.1
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
623 //knob.r += dDist/numDownFingers;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
624 //knob.ang += dtheta;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
625 //printf("thetaSum = %f, distSum = %f\n",gdtheta,gdDist);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
626 //printf("id: %i dTheta = %f, dDist = %f\n",j,dtheta,dDist);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
627 SDL_SendGestureMulti(inTouch,dtheta,dDist);
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
628 }
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
629 else {
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
630 //inTouch->gestureLast[j].dDist = 0;
15dfe42edbfd Fixed gestureMulti. Disabled dollar gesture temporarily.
Jim Grandpre <jim.tla@gmail.com>
parents: 4682
diff changeset
631 //inTouch->gestureLast[j].dtheta = 0;
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632 //inTouch->gestureLast[j].cv.x = 0;
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633 //inTouch->gestureLast[j].cv.y = 0;
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634 }
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635 //inTouch->gestureLast[j].f.p.x = x;
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636 //inTouch->gestureLast[j].f.p.y = y;
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637 //break;
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638 //pressure?
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639 }
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640
4683
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641 if(event->type == SDL_FINGERDOWN) {
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642
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643 inTouch->numDownFingers++;
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644 inTouch->centroid.x = (inTouch->centroid.x*(inTouch->numDownFingers - 1)+
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645 x)/inTouch->numDownFingers;
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646 inTouch->centroid.y = (inTouch->centroid.y*(inTouch->numDownFingers - 1)+
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647 y)/inTouch->numDownFingers;
4688
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648 //printf("Finger Down: (%f,%f). Centroid: (%f,%f\n",x,y,
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649 // inTouch->centroid.x,inTouch->centroid.y);
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650
4684
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651 #ifdef ENABLE_DOLLAR
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652 inTouch->dollarPath.length = 0;
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653 inTouch->dollarPath.p[0].x = x;
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654 inTouch->dollarPath.p[0].y = y;
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655 inTouch->dollarPath.numPoints = 1;
4683
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656 #endif
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657 }
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658 }
4683
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659 }
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660
4657
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661 /* vi: set ts=4 sw=4 expandtab: */
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662