sdlIntersectFRectAndLine function

bool sdlIntersectFRectAndLine(
  1. Pointer<SdlFRect> rect,
  2. Pointer<Float> x1,
  3. Pointer<Float> y1,
  4. Pointer<Float> x2,
  5. Pointer<Float> y2,
)

Calculate the intersection of a rectangle and line segment with float precision.

This function is used to clip a line segment to a rectangle. A line segment contained entirely within the rectangle or that does not intersect will remain unchanged. A line segment that crosses the rectangle at either or both ends will be clipped to the boundary of the rectangle and the new coordinates saved in X1, Y1, X2, and/or Y2 as necessary.

\param rect an SDL_FRect structure representing the rectangle to intersect \param X1 a pointer to the starting X-coordinate of the line \param Y1 a pointer to the starting Y-coordinate of the line \param X2 a pointer to the ending X-coordinate of the line \param Y2 a pointer to the ending Y-coordinate of the line \returns SDL_TRUE if there is an intersection, SDL_FALSE otherwise.

\since This function is available since SDL 2.0.22.

extern DECLSPEC SDL_bool SDLCALL SDL_IntersectFRectAndLine(const SDL_FRect * rect, float *X1, float *Y1, float *X2, float *Y2)

Implementation

bool sdlIntersectFRectAndLine(Pointer<SdlFRect> rect, Pointer<Float> x1,
    Pointer<Float> y1, Pointer<Float> x2, Pointer<Float> y2) {
  final sdlIntersectFRectAndLineLookupFunction = libSdl2.lookupFunction<
      Int32 Function(Pointer<SdlFRect> rect, Pointer<Float> x1,
          Pointer<Float> y1, Pointer<Float> x2, Pointer<Float> y2),
      int Function(Pointer<SdlFRect> rect, Pointer<Float> x1, Pointer<Float> y1,
          Pointer<Float> x2, Pointer<Float> y2)>('SDL_IntersectFRectAndLine');
  return sdlIntersectFRectAndLineLookupFunction(rect, x1, y1, x2, y2) == 1;
}