Babylonjs实现模型围栏效果

用 CreateLines 生成几条线，对生成的线添加动画，HighlightLayer 添加模糊效果。

// 创建模型护栏特效
 class CreateRail {
    constructor( scene) {
        this.scene = scene;
        this.linesArr = [];
        this.LineColor = new BABYLON.Color3(1, 1, 0)
    };
    create() {
        const points = [];
        this.linesArr.length = 0;
        points.push(new BABYLON.Vector3(2, 0, 2));
        points.push(new BABYLON.Vector3(2, 0, -2));
        points.push(new BABYLON.Vector3(-2, 0, -2));
        points.push(new BABYLON.Vector3(-2, 0, 2));
        points.push(points[0]); //close the triangle;
        var hl = new BABYLON.HighlightLayer("hl1", this.scene, true);
        hl.blurVerticalSize = 5; //模糊
        hl.blurHorizontalSize = 5;
    
        for (let i = 0; i < 5; i++) {
            let LineMesh = BABYLON.MeshBuilder.CreateLines("triangle" + i, { points: points }, this.scene);
            this.linesArr.push(LineMesh);
            hl.addMesh(LineMesh, this.LineColor);
        }

    };
    startAnimation() {
        const frameRate = 10;
        const xSlide = new BABYLON.Animation("xSlide", "position.y", frameRate, BABYLON.Animation.ANIMATIONTYPE_FLOAT, BABYLON.Animation.ANIMATIONLOOPMODE_CYCLE);
        const keyFrames = [];
        keyFrames.push({
            frame: 0,
            value: 0
        });
        keyFrames.push({
            frame: 1 * frameRate,
            value: 1
        });
        keyFrames.push({
            frame: 2 * frameRate,
            value: 2        });
        xSlide.setKeys(keyFrames);
        this.linesArr.forEach((item, index) => {
            console.log(index)
            item.animations.push(xSlide);
            this.scene.beginAnimation(item, 0, (index + 0.5) * 3, true);
        })

    };

}
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