quick cocos2d-x 区域裁剪 显示

 1 --绘制裁剪区域
 2 local draw_node = CCDrawNode:create()
 3 local verts  = {
 4     {100), 50},  
 5     {390), 50},  
 6     {390), 260}, 
 7     {100), 260}
 8 }
 9 draw_node:drawPolygon(verts, ccc4f(255, 255, 255, 255), 1, ccc4f(255, 255, 255, 255))
10 
11 local clip_node = CCClippingNode:create()
12 clip_node:setStencil(draw_node);
13 clip_node:setPosition(ccp(0, 0));
14 self:addChild(clip_node);
15 --把要显示的区域加入到裁剪区域
16 clip_node:addChild(self.layer);