Draw image on graphic context.
void CL_Image::draw( CL_GraphicContext & gc, float x, float y); void CL_Image::draw( CL_GraphicContext & gc, int x, int y); void CL_Image::draw( CL_GraphicContext & gc, const CL_Rectf & src, const CL_Rectf & dest); void CL_Image::draw( CL_GraphicContext & gc, const CL_Rectf & dest);