Function rect_testHasIntersectionPoint

deps/SDL2/test/testautomation_rect.c:832–870

! * \brief Tests SDL_HasIntersection() with 1x1 pixel sized rectangles * * \sa * http://wiki.libsdl.org/moin.cgi/SDL_HasIntersection */

 * http://wiki.libsdl.org/moin.cgi/SDL_HasIntersection
 */
int rect_testHasIntersectionPoint (void *arg)
{
    SDL_Rect refRectA = { 0, 0, 1, 1 };
    SDL_Rect refRectB = { 0, 0, 1, 1 };
    SDL_Rect rectA;
    SDL_Rect rectB;
    SDL_bool intersection;
    int offsetX, offsetY;

    /* intersecting pixels */
    refRectA.x = SDLTest_RandomIntegerInRange(1, 100);
    refRectA.y = SDLTest_RandomIntegerInRange(1, 100);
    refRectB.x = refRectA.x;
    refRectB.y = refRectA.y;
    rectA = refRectA;
    rectB = refRectB;
    intersection = SDL_HasIntersection(&rectA, &rectB);
    _validateHasIntersectionResults(intersection, SDL_TRUE, &rectA, &rectB, &refRectA, &refRectB);

    /* non-intersecting pixels cases */
    for (offsetX = -1; offsetX <= 1; offsetX++) {
        for (offsetY = -1; offsetY <= 1; offsetY++) {
            if (offsetX != 0 || offsetY != 0) {
                refRectA.x = SDLTest_RandomIntegerInRange(1, 100);
                refRectA.y = SDLTest_RandomIntegerInRange(1, 100);
                refRectB.x = refRectA.x;
                refRectB.y = refRectA.y;
                refRectB.x += offsetX;
                refRectB.y += offsetY;
                rectA = refRectA;
                rectB = refRectB;
                intersection = SDL_HasIntersection(&rectA, &rectB);
                _validateHasIntersectionResults(intersection, SDL_FALSE, &rectA, &rectB, &refRectA, &refRectB);
            }
        }
    }

    return TEST_COMPLETED;
}

/* !
 * \brief Tests SDL_HasIntersection() with empty rectangles