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CocosCreator 截屏(全屏,指定node区域)

作者:互联网

参考:

cocos官方文档-摄像机截图

cocos版本:2.4.4

 

使用camera.targetTexture进行截图。

 

一  截图指定node

如下图,对heroNode进行截图。

 

 

MainScene.ts代码如下:

const { ccclass, property } = cc._decorator;


@ccclass
export default class MainScene extends cc.Component {

    @property(cc.Node)  //截图目标节点
    heroNode: cc.Node = null;

    start() {

        let node = this.screenShot(this.heroNode);
        node.x = 0;
        node.y = 0;
        node.parent = this.node;
    }

    /**
     * 截图
     * @param targetNode  截图目标节点,如果为null则表示截全屏
     * @returns 返回截屏图片的node
     */
    screenShot(targetNode: cc.Node = null) {
        //获取当前场景Camera
        let camera = cc.director.getScene().getComponentInChildren(cc.Camera);
        //创建新的texture
        let texture = new cc.RenderTexture();
        texture.initWithSize(cc.winSize.width, cc.winSize.height, (cc.game as any)._renderContext.STENCIL_INDEX8);
        //创建新的spriteFrame
        let spriteFrame = new cc.SpriteFrame();
        if (targetNode == null) {
            spriteFrame.setTexture(texture);
        } else {
            let nodeX = cc.winSize.width / 2 + targetNode.x - targetNode.width / 2;
            let nodeY = cc.winSize.height / 2 + targetNode.y - targetNode.height / 2;
            let nodeWidth = targetNode.width;
            let nodeHeight = targetNode.height;
            //只显示node部分的图片
            spriteFrame.setTexture(texture, new cc.Rect(nodeX, nodeY, nodeWidth, nodeHeight));
        }
        //创建新的node
        let node = new cc.Node();
        let sprite = node.addComponent(cc.Sprite);
        sprite.spriteFrame = spriteFrame;
        //截图是反的,这里将截图scaleY取反,这样就是正的了
        sprite.node.scaleY = - Math.abs(sprite.node.scaleY);
        //手动渲染camera
        camera.cullingMask = 0xffffffff;
        camera.targetTexture = texture;
        camera.render();
        camera.targetTexture = null;

        return node;
    }

}

 

截图效果,可见人物只截取了node范围内的部分。

 

 

二 截图全屏

直接调用上面代码的screenShot(),不传入参数,就是截图全屏。

    start() {
        let node = this.screenShot();
        node.x = 0;
        node.y = 0;
        node.parent = this.node;
    }

 

截图了全屏  

 

 

 

 

标签:node,截图,targetNode,cc,camera,CocosCreator,截屏,let
来源: https://www.cnblogs.com/gamedaybyday/p/15836011.html