sdlIntersectRectAndLine function

bool sdlIntersectRectAndLine(Pointer<SdlRect> rect, Pointer<Int32> x1, Pointer<Int32> y1, Pointer<Int32> x2, Pointer<Int32> y2,)

Calculate the intersection of a rectangle and line segment.

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_Rect 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 2.0.0.

extern DECLSPEC SDL_bool SDLCALL SDL_IntersectRectAndLine(const SDL_Rect * rect, int *X1, int *Y1, int *X2, int *Y2)

Implementation

bool sdlIntersectRectAndLine(Pointer<SdlRect> rect, Pointer<Int32> x1,
    Pointer<Int32> y1, Pointer<Int32> x2, Pointer<Int32> y2) {
  final sdlIntersectRectAndLineLookupFunction = libSdl2.lookupFunction<
      Int32 Function(Pointer<SdlRect> rect, Pointer<Int32> x1,
          Pointer<Int32> y1, Pointer<Int32> x2, Pointer<Int32> y2),
      int Function(Pointer<SdlRect> rect, Pointer<Int32> x1, Pointer<Int32> y1,
          Pointer<Int32> x2, Pointer<Int32> y2)>('SDL_IntersectRectAndLine');
  return sdlIntersectRectAndLineLookupFunction(rect, x1, y1, x2, y2) == 1;
}