Window.c File Reference

#include <assert.h>
#include <math.h>
#include "Window.h"

Go to the source code of this file.

Functions
SDL_Rect	MVC_TransformToWindow (SDL_Window *window, const SDL_Rect *rect)
	Transforms the specified rectangle to normalized device coordinates in window.

Function Documentation

MVC_TransformToWindow()

SDL_Rect MVC_TransformToWindow	(	SDL_Window *	window,
		const SDL_Rect *	rect
	)

Transforms the specified rectangle to normalized device coordinates in window.

Parameters

window	The window.
rect	A rectangle defined in object space.

Returns

The transformed rectangle.

Definition at line 29 of file Window.c.

                                                                         {
 
  assert(rect);
 
  const float pixelDensity = SDL_GetWindowPixelDensity(window);
 
  // SDL_gpu uses top-left origin (same as SDL), so no Y-flip is required.
  const float x = SDL_roundf(rect->x * pixelDensity);
  const float y = SDL_roundf(rect->y * pixelDensity);
  const float w = SDL_roundf(rect->w * pixelDensity);
  const float h = SDL_roundf(rect->h * pixelDensity);
 
  return (SDL_Rect) {
    .x = (int) x,
    .y = (int) y,
    .w = (int) w,
    .h = (int) h,
  };
}