sdl-ios-xcode: src/video/SDL

annotate src/video/SDL_rect.c @ 3593:b931bcfd94a0

In the process of adding rectangle drawing

author	Sam Lantinga <slouken@libsdl.org>
date	Fri, 18 Dec 2009 07:03:09 +0000
parents	97eae5a705f9
children	f7b03b6838cb

rev	line source
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	1 /*
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	2 SDL - Simple DirectMedia Layer
2859 99210400e8b9 Updated copyright date Sam Lantinga <slouken@libsdl.org> parents: 2275 diff changeset	3 Copyright (C) 1997-2009 Sam Lantinga
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	4
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	5 This library is free software; you can redistribute it and/or
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	6 modify it under the terms of the GNU Lesser General Public
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	7 License as published by the Free Software Foundation; either
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	8 version 2.1 of the License, or (at your option) any later version.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	9
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	10 This library is distributed in the hope that it will be useful,
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	11 but WITHOUT ANY WARRANTY; without even the implied warranty of
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	13 Lesser General Public License for more details.
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	14
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	15 You should have received a copy of the GNU Lesser General Public
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	16 License along with this library; if not, write to the Free Software
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	18
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	19 Sam Lantinga
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	20 slouken@libsdl.org
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	21 */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	22 #include "SDL_config.h"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	23
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	24 #include "SDL_video.h"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	25 #include "SDL_rect_c.h"
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	26
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	27 SDL_bool
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	28 SDL_HasIntersection(const SDL_Rect * A, const SDL_Rect * B)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	29 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	30 int Amin, Amax, Bmin, Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	31
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	32 /* Horizontal intersection */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	33 Amin = A->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	34 Amax = Amin + A->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	35 Bmin = B->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	36 Bmax = Bmin + B->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	37 if (Bmin > Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	38 Amin = Bmin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	39 if (Bmax < Amax)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	40 Amax = Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	41 if (Amax <= Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	42 return SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	43
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	44 /* Vertical intersection */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	45 Amin = A->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	46 Amax = Amin + A->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	47 Bmin = B->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	48 Bmax = Bmin + B->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	49 if (Bmin > Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	50 Amin = Bmin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	51 if (Bmax < Amax)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	52 Amax = Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	53 if (Amax <= Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	54 return SDL_FALSE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	55
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	56 return SDL_TRUE;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	57 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	58
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	59 SDL_bool
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	60 SDL_IntersectRect(const SDL_Rect * A, const SDL_Rect * B, SDL_Rect * result)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	61 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	62 int Amin, Amax, Bmin, Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	63
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	64 /* Horizontal intersection */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	65 Amin = A->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	66 Amax = Amin + A->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	67 Bmin = B->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	68 Bmax = Bmin + B->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	69 if (Bmin > Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	70 Amin = Bmin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	71 result->x = Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	72 if (Bmax < Amax)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	73 Amax = Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	74 result->w = Amax - Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	75
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	76 /* Vertical intersection */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	77 Amin = A->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	78 Amax = Amin + A->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	79 Bmin = B->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	80 Bmax = Bmin + B->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	81 if (Bmin > Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	82 Amin = Bmin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	83 result->y = Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	84 if (Bmax < Amax)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	85 Amax = Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	86 result->h = Amax - Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	87
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	88 return !SDL_RectEmpty(result);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	89 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	90
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	91 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	92 SDL_UnionRect(const SDL_Rect * A, const SDL_Rect * B, SDL_Rect * result)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	93 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	94 int Amin, Amax, Bmin, Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	95
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	96 /* Horizontal union */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	97 Amin = A->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	98 Amax = Amin + A->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	99 Bmin = B->x;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	100 Bmax = Bmin + B->w;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	101 if (Bmin < Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	102 Amin = Bmin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	103 result->x = Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	104 if (Bmax > Amax)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	105 Amax = Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	106 result->w = Amax - Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	107
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	108 /* Vertical intersection */
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	109 Amin = A->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	110 Amax = Amin + A->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	111 Bmin = B->y;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	112 Bmax = Bmin + B->h;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	113 if (Bmin < Amin)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	114 Amin = Bmin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	115 result->y = Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	116 if (Bmax > Amax)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	117 Amax = Bmax;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	118 result->h = Amax - Amin;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	119 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	120
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	121 SDL_bool
3536 0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	122 SDL_EnclosePoints(const SDL_Point * points, int count, const SDL_Rect * clip,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	123 SDL_Rect * result)
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	124 {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	125 int minx, miny;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	126 int maxx, maxy;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	127 int x, y, i;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	128
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	129 if (count < 1) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	130 return SDL_FALSE;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	131 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	132
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	133 if (clip) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	134 SDL_bool added = SDL_FALSE;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	135 int clip_minx = clip->x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	136 int clip_miny = clip->y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	137 int clip_maxx = clip->x+clip->w-1;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	138 int clip_maxy = clip->y+clip->h-1;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	139
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	140 for (i = 0; i < count; ++i) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	141 x = points[i].x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	142 y = points[i].y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	143
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	144 if (x < clip_minx \|\| x > clip_maxx \|\|
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	145 y < clip_miny \|\| y > clip_maxy) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	146 continue;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	147 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	148 if (!added) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	149 minx = maxx = x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	150 miny = maxy = y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	151 added = SDL_TRUE;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	152 continue;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	153 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	154 if (x < minx) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	155 minx = x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	156 } else if (x > maxx) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	157 maxx = x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	158 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	159 if (y < miny) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	160 miny = y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	161 } else if (y > maxy) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	162 maxy = y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	163 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	164 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	165 if (!added) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	166 return SDL_FALSE;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	167 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	168 } else {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	169 /* No clipping, always add the first point */
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	170 minx = maxx = points[0].x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	171 miny = maxy = points[0].y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	172
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	173 for (i = 1; i < count; ++i) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	174 x = points[i].x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	175 y = points[i].y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	176
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	177 if (x < minx) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	178 minx = x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	179 } else if (x > maxx) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	180 maxx = x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	181 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	182 if (y < miny) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	183 miny = y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	184 } else if (y > maxy) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	185 maxy = y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	186 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	187 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	188 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	189
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	190 if (result) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	191 result->x = minx;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	192 result->y = miny;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	193 result->w = (maxx-minx)+1;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	194 result->h = (maxy-miny)+1;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	195 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	196 return SDL_TRUE;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	197 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	198
3541 0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	199 /* Use the Cohen-Sutherland algorithm for line clipping */
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	200 #define CODE_BOTTOM 1
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	201 #define CODE_TOP 2
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	202 #define CODE_LEFT 4
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	203 #define CODE_RIGHT 8
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	204
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	205 static int ComputeOutCode(const SDL_Rect * rect, int x, int y)
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	206 {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	207 int code = 0;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	208 if (y < 0) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	209 code \|= CODE_TOP;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	210 } else if (y >= rect->y + rect->h) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	211 code \|= CODE_BOTTOM;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	212 }
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	213 if (x < 0) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	214 code \|= CODE_LEFT;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	215 } else if (x >= rect->x + rect->w) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	216 code \|= CODE_RIGHT;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	217 }
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	218 return code;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	219 }
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	220
3536 0267b8b1595c Added interfaces for batch drawing of points, lines and rects: Sam Lantinga <slouken@libsdl.org> parents: 3046 diff changeset	221 SDL_bool
2920 cdb01906cb7e indent Sam Lantinga <slouken@libsdl.org> parents: 2909 diff changeset	222 SDL_IntersectRectAndLine(const SDL_Rect * rect, int X1, int Y1, int *X2,
cdb01906cb7e indent Sam Lantinga <slouken@libsdl.org> parents: 2909 diff changeset	223 int *Y2)
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	224 {
3541 0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	225 int x, y;
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	226 int x1, y1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	227 int x2, y2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	228 int rectx1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	229 int recty1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	230 int rectx2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	231 int recty2;
3541 0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	232 int outcode1, outcode2;
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	233
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	234 if (!rect \|\| !X1 \|\| !Y1 \|\| !X2 \|\| !Y2) {
3046 47965eacde88 Fix recommended by Eddy L O Jansson Sam Lantinga <slouken@libsdl.org> parents: 3004 diff changeset	235 return SDL_FALSE;
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	236 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	237
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	238 x1 = *X1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	239 y1 = *Y1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	240 x2 = *X2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	241 y2 = *Y2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	242 rectx1 = rect->x;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	243 recty1 = rect->y;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	244 rectx2 = rect->x + rect->w - 1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	245 recty2 = rect->y + rect->h - 1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	246
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	247 /* Check to see if entire line is inside rect */
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	248 if (x1 >= rectx1 && x1 <= rectx2 && x2 >= rectx1 && x2 <= rectx2 &&
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	249 y1 >= recty1 && y1 <= recty2 && y2 >= recty1 && y2 <= recty2) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	250 return SDL_TRUE;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	251 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	252
2994 7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500 Sam Lantinga <slouken@libsdl.org> parents: 2920 diff changeset	253 /* Check to see if entire line is to one side of rect */
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	254 if ((x1 < rectx1 && x2 < rectx1) \|\| (x1 > rectx2 && x2 > rectx2) \|\|
3004 f3d7226a8dfd Fixed lines intersecting the top corners of a rectangle Sam Lantinga <slouken@libsdl.org> parents: 2997 diff changeset	255 (y1 < recty1 && y2 < recty1) \|\| (y1 > recty2 && y2 > recty2)) {
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	256 return SDL_FALSE;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	257 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	258
2994 7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500 Sam Lantinga <slouken@libsdl.org> parents: 2920 diff changeset	259 if (y1 == y2) {
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	260 /* Horizontal line, easy to clip */
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	261 if (x1 < rectx1) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	262 *X1 = rectx1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	263 } else if (x1 > rectx2) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	264 *X1 = rectx2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	265 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	266 if (x2 < rectx1) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	267 *X2 = rectx1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	268 } else if (x2 > rectx2) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	269 *X2 = rectx2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	270 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	271 return SDL_TRUE;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	272 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	273
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	274 if (x1 == x2) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	275 /* Vertical line, easy to clip */
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	276 if (y1 < recty1) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	277 *Y1 = recty1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	278 } else if (y1 > recty2) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	279 *Y1 = recty2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	280 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	281 if (y2 < recty1) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	282 *Y2 = recty1;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	283 } else if (y2 > recty2) {
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	284 *Y2 = recty2;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	285 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	286 return SDL_TRUE;
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	287 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	288
3541 0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	289 /* More complicated Cohen-Sutherland algorithm */
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	290 outcode1 = ComputeOutCode(rect, x1, y1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	291 outcode2 = ComputeOutCode(rect, x2, y2);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	292 while (outcode1 \|\| outcode2) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	293 if (outcode1 & outcode2) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	294 return SDL_FALSE;
2994 7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500 Sam Lantinga <slouken@libsdl.org> parents: 2920 diff changeset	295 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500 Sam Lantinga <slouken@libsdl.org> parents: 2920 diff changeset	296
3541 0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	297 if (outcode1) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	298 if (outcode1 & CODE_TOP) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	299 y = recty1;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	300 x = x1 + ((x2 - x1) * (y - y1)) / (y2 - y1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	301 } else if (outcode1 & CODE_BOTTOM) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	302 y = recty2;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	303 x = x1 + ((x2 - x1) * (y - y1)) / (y2 - y1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	304 } else if (outcode1 & CODE_LEFT) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	305 x = rectx1;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	306 y = y1 + ((y2 - y1) * (x - x1)) / (x2 - x1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	307 } else if (outcode1 & CODE_RIGHT) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	308 x = rectx2;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	309 y = y1 + ((y2 - y1) * (x - x1)) / (x2 - x1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	310 }
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	311 x1 = x;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	312 y1 = y;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	313 outcode1 = ComputeOutCode(rect, x, y);
3542 97eae5a705f9 Make sure we fully clip the first point before starting to adjust the second point. Sam Lantinga <slouken@libsdl.org> parents: 3541 diff changeset	314 } else {
3541 0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	315 if (outcode2 & CODE_TOP) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	316 y = recty1;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	317 x = x1 + ((x2 - x1) * (y - y1)) / (y2 - y1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	318 } else if (outcode2 & CODE_BOTTOM) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	319 y = recty2;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	320 x = x1 + ((x2 - x1) * (y - y1)) / (y2 - y1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	321 } else if (outcode2 & CODE_LEFT) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	322 x = rectx1;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	323 y = y1 + ((y2 - y1) * (x - x1)) / (x2 - x1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	324 } else if (outcode2 & CODE_RIGHT) {
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	325 x = rectx2;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	326 y = y1 + ((y2 - y1) * (x - x1)) / (x2 - x1);
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	327 }
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	328 x2 = x;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	329 y2 = y;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	330 outcode2 = ComputeOutCode(rect, x, y);
2994 7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500 Sam Lantinga <slouken@libsdl.org> parents: 2920 diff changeset	331 }
7563b99e9a49 Date: Sat, 3 Jan 2009 22:11:18 -0500 Sam Lantinga <slouken@libsdl.org> parents: 2920 diff changeset	332 }
3541 0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	333 *X1 = x1;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	334 *Y1 = y1;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	335 *X2 = x2;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	336 *Y2 = y2;
0c429a5fda8a Added an automated test for rectangle routines, currently only testing line clipping. Sam Lantinga <slouken@libsdl.org> parents: 3536 diff changeset	337 return SDL_TRUE;
2909 3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	338 }
3da0bb421d83 Added line clipping Sam Lantinga <slouken@libsdl.org> parents: 2859 diff changeset	339
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	340 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	341 SDL_AddDirtyRect(SDL_DirtyRectList * list, const SDL_Rect * rect)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	342 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	343 SDL_DirtyRect *dirty;
2223 175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	344
175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	345 /* FIXME: At what point is this optimization too expensive? */
175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	346 for (dirty = list->list; dirty; dirty = dirty->next) {
175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	347 if (SDL_HasIntersection(&dirty->rect, rect)) {
175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	348 SDL_UnionRect(&dirty->rect, rect, &dirty->rect);
175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	349 return;
175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	350 }
175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	351 }
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	352
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	353 if (list->free) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	354 dirty = list->free;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	355 list->free = dirty->next;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	356 } else {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	357 dirty = (SDL_DirtyRect ) SDL_malloc(sizeof(dirty));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	358 if (!dirty) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	359 return;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	360 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	361 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	362 dirty->rect = *rect;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	363 dirty->next = list->list;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	364 list->list = dirty;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	365 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	366
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	367 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	368 SDL_ClearDirtyRects(SDL_DirtyRectList * list)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	369 {
2224 29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	370 SDL_DirtyRect prev, curr;
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	371
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	372 /* Skip to the end of the free list */
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	373 prev = NULL;
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	374 for (curr = list->free; curr; curr = curr->next) {
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	375 prev = curr;
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	376 }
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	377
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	378 /* Add the list entries to the end */
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	379 if (prev) {
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	380 prev->next = list->list;
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	381 } else {
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	382 list->free = list->list;
29cc9e9c76bd Whoops, it's not quite that easy - fixed bug in SDL_ClearDirtyRects() Sam Lantinga <slouken@libsdl.org> parents: 2223 diff changeset	383 }
2223 175754591a13 Optimized dirty rect code Sam Lantinga <slouken@libsdl.org> parents: 1895 diff changeset	384 list->list = NULL;
1895 c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	385 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	386
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	387 void
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	388 SDL_FreeDirtyRects(SDL_DirtyRectList * list)
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	389 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	390 while (list->list) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	391 SDL_DirtyRect *elem = list->list;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	392 list->list = elem->next;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	393 SDL_free(elem);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	394 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	395 while (list->free) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	396 SDL_DirtyRect *elem = list->free;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	397 list->free = elem->next;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	398 SDL_free(elem);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	399 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	400 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	401
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head. Sam Lantinga <slouken@libsdl.org> parents: diff changeset	402 /* vi: set ts=4 sw=4 expandtab: */

Mercurial > sdl-ios-xcode

annotate src/video/SDL_rect.c @ 3593:b931bcfd94a0