sdlGetRectAndLineIntersection function

bool sdlGetRectAndLineIntersection(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 true if there is an intersection, false otherwise.

\since This function is available since SDL 3.1.3.

extern SDL_DECLSPEC bool SDLCALL SDL_GetRectAndLineIntersection(const SDL_Rect *rect, int *X1, int *Y1, int *X2, int *Y2)

Implementation

bool sdlGetRectAndLineIntersection(Pointer<SdlRect> rect, Pointer<Int32> x1,
    Pointer<Int32> y1, Pointer<Int32> x2, Pointer<Int32> y2) {
  final sdlGetRectAndLineIntersectionLookupFunction = libSdl3.lookupFunction<
      Uint8 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_GetRectAndLineIntersection');
  return sdlGetRectAndLineIntersectionLookupFunction(rect, x1, y1, x2, y2) == 1;
}