Method resize

src/Engine/Surface.cpp:860–886

* Recreates the surface with a new size. * Old contents will not be altered, and may be * cropped to fit the new size. * @param width Width in pixels. * @param height Height in pixels. */

 * @param height Height in pixels.
 */
void Surface::resize(int width, int height)
{
	// Set up new surface
	Uint8 bpp = _surface->format->BitsPerPixel;
	int pitch = GetPitch(bpp, width);
	void *alignedBuffer = NewAligned(bpp, width, height);
	SDL_Surface *surface = SDL_CreateRGBSurfaceFrom(alignedBuffer, width, height, bpp, pitch, 0, 0, 0, 0);
	
	if (surface == 0)
	{
		throw Exception(SDL_GetError());
	}

	// Copy old contents
	SDL_SetColorKey(surface, SDL_SRCCOLORKEY, 0);
	SDL_SetColors(surface, getPalette(), 0, 255);
	SDL_BlitSurface(_surface, 0, surface, 0);

	// Delete old surface
	DeleteAligned(_alignedBuffer);
	SDL_FreeSurface(_surface);
	_alignedBuffer = alignedBuffer;
	_surface = surface;

	_clear.w = getWidth();
	_clear.h = getHeight();
}

/**
 * Changes the width of the surface.