Class: SDL::PixelFormat

Inherits:
Object
  • Object
show all
Defined in:
ext/sdl/sdl.c

Instance Method Summary collapse

Instance Method Details

#get_rgba(pixel) ⇒ Object

// TODO: phase these out… move to renderer or top of SDL



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# File 'ext/sdl/sdl.c', line 391

static VALUE PixelFormat_get_rgba(VALUE self, VALUE pixel) {
  DEFINE_SELF(PixelFormat, format, self);
  Uint8 r, g, b, a;

  SDL_GetRGBA(NUM2UINT(pixel), format, &r, &g, &b, &a);

  return rb_ary_new3(4, UINT2NUM(r), UINT2NUM(g), UINT2NUM(b), UINT2NUM(a));
}

#map_rgba(r, g, b, a) ⇒ Object 



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# File 'ext/sdl/sdl.c', line 383

static VALUE PixelFormat_map_rgba(VALUE self, VALUE r, VALUE g, VALUE b, VALUE a) {
  DEFINE_SELF(PixelFormat, format, self);

  return UINT2NUM(SDL_MapRGBA(format,
                              NUM2UINT8(r), NUM2UINT8(g),
                              NUM2UINT8(b), NUM2UINT8(a)));
}