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comparison src/video/SDL_shape.c @ 4836:7eb8ca721a5b

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Fixed the off-by-one bug in SDL_RecursivelyCalculateShapeTree().
author egottlieb
date Fri, 06 Aug 2010 13:52:38 -0400
parents fd5bb97ec05d
children 2e446923c9fb
comparison
equal deleted inserted replaced
4835:40b5293d0598 4836:7eb8ca721a5b
166 next.h = dimensions.h / 2; 166 next.h = dimensions.h / 2;
167 //These will change from recursion to recursion. 167 //These will change from recursion to recursion.
168 next.x = dimensions.x; 168 next.x = dimensions.x;
169 next.y = dimensions.y; 169 next.y = dimensions.y;
170 result->data.children.upleft = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next); 170 result->data.children.upleft = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next);
171 next.x = dimensions.w / 2 + 1; 171 next.x = dimensions.w / 2;
172 //Unneeded: next.y = dimensions.y; 172 //Unneeded: next.y = dimensions.y;
173 result->data.children.upright = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next); 173 result->data.children.upright = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next);
174 next.x = dimensions.x; 174 next.x = dimensions.x;
175 next.y = dimensions.h / 2 + 1; 175 next.y = dimensions.h / 2;
176 result->data.children.downleft = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next); 176 result->data.children.downleft = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next);
177 next.x = dimensions.w / 2 + 1; 177 next.x = dimensions.w / 2;
178 //Unneeded: next.y = dimensions.h / 2 + 1; 178 //Unneeded: next.y = dimensions.h / 2 + 1;
179 result->data.children.downright = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next); 179 result->data.children.downright = (struct SDL_ShapeTree *)RecursivelyCalculateShapeTree(mode,mask,invert,next);
180 return result; 180 return result;
181 } 181 }
182 } 182 }