一、WinSize、VisibleOrigin、VisibleSize、winSizePixels 与DesignResolutionSize
看以下代码：
- //returns the size of the OpenGL view in points.以点的形式返回OpenGL视图大小
- Vec2 _winSize = Director:: getInstance ()->getWinSize ();
- //returns visible origin of the OpenGL view in points.以点的形式返回OpenGL视图的可视开始原点
- Vec2 visibleOriginSize = Director ::getInstance ()-> getVisibleOrigin ();
- //returns visible size of the OpenGL view in points.以点的形式返回OpenGL视图可视大小
- //the value is equal to getWinSize if don't invoke
- Vec2 visitSize = Director ::getInstance ()-> getVisibleSize ();
- //returns the size of the OpenGL view in pixels.以像素形式返回OpenGL视图的大小
- Vec2 winSizePixels = Director :: getInstance()-> getWinSizeInPixels ();
- CCLOG ("winSize width:%f",_winSize. width );
- CCLOG ("winSize height:%f",_winSize. height );
- CCLOG ("visibleOriginSize width:%f",visibleOriginSize . x);
- CCLOG ("visibleOriginSize height:%f",visibleOriginSize . y);
- CCLOG ("visitSize width:%f",visitSize . x);
- CCLOG ("visitSize height:%f",visitSize. y);
- CCLOG ("winSizePixels width:%f",winSizePixels . x);
- CCLOG ("winSizePixels height:%f",winSizePixels . y);
- //结果
- winSize width:960.000000
- winSize height:640.000000
- visibleOriginSize width:0.000000
- visibleOriginSize height:0.000000
- visitSize width:960.000000
- visitSize height:640.000000
- winSizePixels width:960.000000
- winSizePixels height:640.000000
- //修改DesignResolutionSize
- glview->setFrameSize(640,640); //修改cocos2dx的模拟器大小
- glview -> setDesignResolutionSize (854,468,ResolutionPolicy :: EXACT_FIT);
- //结果：模拟器变小了但是winSizePixels、winsize与visibleSize的值与DesignResolutionSize一致，所以
- //winSize并不是指屏幕的大小。
- winSize width:854.000000
- winSize height:468.000000
- visibleOriginSize width:0.000000
- visibleOriginSize height:0.000000
- visitSize width:854.000000
- visitSize height:468.000000
- winSizePixels width:854.000000
- winSizePixels height:468.000000
总结：
1、winSizePixels、winSize、visitSize的值与DesignResolutionSize一致。
2、visibleOriginSize 获取OpenGl视图开始点，为Vec2(0,0)。
二、contentSize
返回值为Size类型
getContentSize()：获取图像的逻辑大小，并不是像素大小
三、textureRect
获取纹理大小，返回一个Rect类型，这个Rect由Vec2和Size类型组成，其实Rect就是表示一个矩形，Vec2表示纹理开始位置，默认Vec2(0,0)，Size表示边长。
getTextureRect()：获取Rect对象
五、scale
缩放操作：
- Size wins = Director :: getInstance()-> getWinSize ();
- Sprite * sprite = Sprite :: create( fileName );
- float winw = wins .width ; //获取宽度
- float winh = wins .height ; //获取高度
- float spx = sprite ->getTextureRect (). getMaxX();
- float spy = sprite ->getTextureRect (). getMaxY();
- sprite ->setScaleX ( winw / spx ); //设置精灵宽度缩放比例
- sprite ->setScaleY ( winh / spy );
- sprite ->setAnchorPoint ( Vec2( 0,0 ));
