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annotate touchTest/touchTest.c @ 4643:8806b78988f7

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Bug fixes. Basic touch events (finger up, finger down, finger move) supported.
author Jim Grandpre <jim.tla@gmail.com>
date Sat, 29 May 2010 01:47:19 -0400
parents 057e8762d2a1
children fb500b3e1717
rev   line source
4642
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1 #include <stdio.h>
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2 #include <SDL.h>
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3 #include <math.h>
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4 #include "../src/events/SDL_touch_c.h" //BAD!!!
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5
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6 #define PI 3.1415926535897
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7 #define WIDTH 640
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8 #define HEIGHT 480
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9 #define BPP 4
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10 #define DEPTH 32
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11
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12 #define MAXFINGERS 3
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13
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14 int mousx,mousy;
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15 int keystat[512];
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16 int bstatus;
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17
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18
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19
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20
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21 typedef struct {
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22 int x,y;
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23 } Point;
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24
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25
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26 Point finger[MAXFINGERS];
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27
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28 void handler (int sig)
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29 {
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30 printf ("\nexiting...(%d)\n", sig);
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31 exit (0);
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32 }
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33
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34 void perror_exit (char *error)
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35 {
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36 perror (error);
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37 handler (9);
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38 }
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39
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40
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41 void setpix(SDL_Surface *screen, int x, int y, int col)
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42 {
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43 Uint32 *pixmem32;
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44 Uint32 colour;
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45
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46 if((unsigned)x > screen->w) return;
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47 if((unsigned)y > screen->h) return;
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48
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49 colour = SDL_MapRGB( screen->format, (col>>16)&0xFF, (col>>8)&0xFF, col&0xFF);
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50
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51 pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x;
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52 *pixmem32 = colour;
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53 }
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54
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55 void drawCircle(SDL_Surface* screen,int x,int y,int r,int c)
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56 {
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57
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58 float a;
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59 for(a=0;a<2*PI;a+=1.f/(float)r)
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60 {
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61 setpix(screen,(int)(x+r*cos(a)),(int)(y+r*sin(a)),c);
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62 }
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63 }
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64
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65 void DrawScreen(SDL_Surface* screen, int h)
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66 {
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67 int x, y, xm,ym,c;
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68 if(SDL_MUSTLOCK(screen))
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69 {
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70 if(SDL_LockSurface(screen) < 0) return;
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71 }
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72 for(y = 0; y < screen->h; y++ )
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73 {
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74 for( x = 0; x < screen->w; x++ )
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75 {
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76 //setpixel(screen, x, y, (x*x)/256+3*y+h, (y*y)/256+x+h, h);
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77 //xm = (x+h)%screen->w;
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78 //ym = (y+h)%screen->w;
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79 //c = sin(h/256*2*PI)*x*y/screen->w/screen->h;
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80 //setpix(screen,x,y,255*sin(xm/screen->w*2*PI),sin(h/255*2*PI)*255*y/screen->h,c);
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81 setpix(screen,x,y,((x%255)<<16) + ((y%255)<<8) + (x+y)%255);
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82 }
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83 }
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84 drawCircle(screen,mousx,mousy,30,0xFFFFFF);
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85
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86 int i;
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87 for(i=0;i<MAXFINGERS;i++)
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88 if(finger[i].x >= 0 && finger[i].y >= 0)
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89 drawCircle(screen,finger[i].x,finger[i].y,20,0xFF6600);
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90
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91 if(SDL_MUSTLOCK(screen)) SDL_UnlockSurface(screen);
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92
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93 SDL_Flip(screen);
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94 }
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95
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96 SDL_Surface* initScreen(int width,int height)
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97 {
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98 return SDL_SetVideoMode(width, height, DEPTH,
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99 SDL_HWSURFACE | SDL_RESIZABLE);
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100 }
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101
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102 int main(int argc, char* argv[])
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103 {
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104 SDL_Surface *screen;
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105 SDL_Event event;
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106
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107 int keypress = 0;
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108 int h=0,s=1,i,j;
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109
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110 memset(keystat,0,512*sizeof(keystat[0]));
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111 if (SDL_Init(SDL_INIT_VIDEO) < 0 ) return 1;
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112
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113 if (!(screen = initScreen(WIDTH,HEIGHT)))
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114 {
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115 SDL_Quit();
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116 return 1;
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117 }
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118
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119 while(!keystat[27]) {
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120 //Poll SDL
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121 while(SDL_PollEvent(&event))
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122 {
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123 switch (event.type)
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124 {
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125 case SDL_QUIT:
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126 keystat[27] = 1;
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127 break;
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128 case SDL_KEYDOWN:
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129 //printf("%i\n",event.key.keysym.sym);
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130 keystat[event.key.keysym.sym] = 1;
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131 //keypress = 1;
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132 break;
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133 case SDL_KEYUP:
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134 //printf("%i\n",event.key.keysym.sym);
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135 keystat[event.key.keysym.sym] = 0;
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136 //keypress = 1;
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137 break;
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138 case SDL_VIDEORESIZE:
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139 if (!(screen = initScreen(event.resize.w,
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140 event.resize.h)))
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141 {
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142 SDL_Quit();
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143 return 1;
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144 }
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145 break;
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146 case SDL_MOUSEMOTION:
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147 mousx = event.motion.x;
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148 mousy = event.motion.y;
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149 break;
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150 case SDL_MOUSEBUTTONDOWN:
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151 bstatus |= (1<<(event.button.button-1));
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152 break;
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153 case SDL_MOUSEBUTTONUP:
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154 bstatus &= ~(1<<(event.button.button-1));
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155 break;
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156 case SDL_FINGERMOTION:
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157
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158 //printf("Finger: %i,x: %i, y: %i\n",event.tfinger.fingerId,
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159 // event.tfinger.x,event.tfinger.y);
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160 finger[event.tfinger.fingerId].x = event.tfinger.x;
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161 finger[event.tfinger.fingerId].y = event.tfinger.y;
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162 break;
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163 case SDL_FINGERDOWN:
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164 printf("Figner: %i down - x: %i, y: %i\n",event.tfinger.fingerId,
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165 event.tfinger.x,event.tfinger.y);
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166 finger[event.tfinger.fingerId].x = event.tfinger.x;
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167 finger[event.tfinger.fingerId].y = event.tfinger.y;
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168 break;
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169 case SDL_FINGERUP:
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170 printf("Figner: %i up - x: %i, y: %i\n",event.tfinger.fingerId,
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171 event.tfinger.x,event.tfinger.y);
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172 finger[event.tfinger.fingerId].x = -1;
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173 finger[event.tfinger.fingerId].y = -1;
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174 break;
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175 }
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176 }
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177 //And draw
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178 DrawScreen(screen,h);
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179 /*
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180 for(i=0;i<512;i++)
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181 if(keystat[i]) printf("%i\n",i);
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182 printf("Buttons:%i\n",bstatus);
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183 */
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184 }
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185 SDL_Quit();
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186
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187 return 0;
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188 }