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comparison test/testgesture.c @ 4921:40a43c6d9220

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Fixed crash if the gesture coordinates go negative - FIXME: Should this protection be at a lower level?
author Sam Lantinga <slouken@libsdl.org>
date Tue, 30 Nov 2010 18:08:01 -0800
parents f5f70fed2c4c
children e8916fe9cfc8
comparison
equal deleted inserted replaced
4920:a4032241deb5 4921:40a43c6d9220
79 Uint8 r,g,b; 79 Uint8 r,g,b;
80 int x = (int)_x; 80 int x = (int)_x;
81 int y = (int)_y; 81 int y = (int)_y;
82 float a; 82 float a;
83 83
84 if(x > screen->w) return; 84 if(x < 0 || x > screen->w) return;
85 if(y > screen->h) return; 85 if(y < 0 || y > screen->h) return;
86 86
87 pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x; 87 pixmem32 = (Uint32*) screen->pixels + y*screen->pitch/BPP + x;
88 88
89 SDL_memcpy(&colour,pixmem32,screen->format->BytesPerPixel); 89 SDL_memcpy(&colour,pixmem32,screen->format->BytesPerPixel);
90 90