sdlRenderCoordinatesFromWindow function

bool sdlRenderCoordinatesFromWindow(
  1. Pointer<SdlRenderer> renderer,
  2. double windowX,
  3. double windowY,
  4. Pointer<Float> x,
  5. Pointer<Float> y,
)

Get a point in render coordinates when given a point in window coordinates.

This takes into account several states:

  • The window dimensions.
  • The logical presentation settings (SDL_SetRenderLogicalPresentation)
  • The scale (SDL_SetRenderScale)
  • The viewport (SDL_SetRenderViewport)

\param renderer the rendering context. \param window_x the x coordinate in window coordinates. \param window_y the y coordinate in window coordinates. \param x a pointer filled with the x coordinate in render coordinates. \param y a pointer filled with the y coordinate in render coordinates. \returns true on success or false on failure; call SDL_GetError() for more information.

\threadsafety This function should only be called on the main thread.

\since This function is available since SDL 3.1.3.

\sa SDL_SetRenderLogicalPresentation \sa SDL_SetRenderScale

extern SDL_DECLSPEC bool SDLCALL SDL_RenderCoordinatesFromWindow(SDL_Renderer *renderer, float window_x, float window_y, float *x, float *y)

Implementation

bool sdlRenderCoordinatesFromWindow(Pointer<SdlRenderer> renderer,
    double windowX, double windowY, Pointer<Float> x, Pointer<Float> y) {
  final sdlRenderCoordinatesFromWindowLookupFunction = libSdl3.lookupFunction<
      Uint8 Function(Pointer<SdlRenderer> renderer, Float windowX,
          Float windowY, Pointer<Float> x, Pointer<Float> y),
      int Function(
          Pointer<SdlRenderer> renderer,
          double windowX,
          double windowY,
          Pointer<Float> x,
          Pointer<Float> y)>('SDL_RenderCoordinatesFromWindow');
  return sdlRenderCoordinatesFromWindowLookupFunction(
          renderer, windowX, windowY, x, y) ==
      1;
}