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SDL_Rect: Added floating point versions of all the rectangle APIs.

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Fixes #5110.
This commit is contained in:
Ryan C. Gordon
2022-03-19 10:27:31 -04:00
parent 4d9bef604a
commit d81fee7623
6 changed files with 608 additions and 470 deletions
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54
src/render/SDL_render.c
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@@ -3382,60 +3382,6 @@ SDL_RenderFillRectsF(SDL_Renderer * renderer,
return retval < 0 ? retval : FlushRenderCommandsIfNotBatching(renderer);
}
/* !!! FIXME: move this to a public API if we want to do float versions of all of these later */
SDL_FORCE_INLINE SDL_bool SDL_FRectEmpty(const SDL_FRect *r)
{
return ((!r) || (r->w <= 0.0f) || (r->h <= 0.0f)) ? SDL_TRUE : SDL_FALSE;
}
/* !!! FIXME: move this to a public API if we want to do float versions of all of these later */
static SDL_bool
SDL_HasIntersectionF(const SDL_FRect * A, const SDL_FRect * B)
{
float Amin, Amax, Bmin, Bmax;
if (!A) {
SDL_InvalidParamError("A");
return SDL_FALSE;
}
if (!B) {
SDL_InvalidParamError("B");
return SDL_FALSE;
}
/* Special cases for empty rects */
if (SDL_FRectEmpty(A) || SDL_FRectEmpty(B)) {
return SDL_FALSE;
}
/* Horizontal intersection */
Amin = A->x;
Amax = Amin + A->w;
Bmin = B->x;
Bmax = Bmin + B->w;
if (Bmin > Amin)
Amin = Bmin;
if (Bmax < Amax)
Amax = Bmax;
if (Amax <= Amin)
return SDL_FALSE;
/* Vertical intersection */
Amin = A->y;
Amax = Amin + A->h;
Bmin = B->y;
Bmax = Bmin + B->h;
if (Bmin > Amin)
Amin = Bmin;
if (Bmax < Amax)
Amax = Bmax;
if (Amax <= Amin)
return SDL_FALSE;
return SDL_TRUE;
}
int
SDL_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
const SDL_Rect * srcrect, const SDL_Rect * dstrect)