动画一个THREE.Points对象

Question

我尝试从Blender加载模型，将PointsMaterial应用于它并为其设置动画。到目前为止，只要我使用THREE.PointsMaterial以外的材料创建网格，我就能够加载模型并成功制作动画。

当我创建THREE.Points对象时，动画无法播放。我注意到，当我将PointsMaterial的morphTargets属性设置为true时，会发出一条警告，指出PointsMaterial没有此类属性。 Threejs是否不支持使用变形目标的Points对象动画？

monster指的是动画时有效的网格。它使用加载的几何和材质。 ParticleSystem是THREE.Points对象。

代码：

function loadObject(path){
        var loader = new THREE.JSONLoader();
    loader.load(
        path,

        function(geometry, materials){  
            var material = materials[ 0 ];
            material.morphTargets = true;
            material.color.setHex( 0xffaaaa );
            monster = new THREE.Mesh( geometry, materials );
            monster.position.set( 0, 0, 0 );
            var s = .003;
            monster.scale.set( s, s, s );

            var particleMaterial = new THREE.PointsMaterial({
                color: 0xffffff,
                size: .005,
                morphTargets: true
            });

            particleSystem = new THREE.Points(geometry, particleMaterial);
            particleSystem.morphTargetInfluences = monster.morphTargetInfluences;
            particleSystem.morphTargetDictionary = monster.morphTargetDictionary;
            particleSystem.position.set(0, 0, 0);
            particleSystem.scale.set(s, s, s);

            particleSystem.matrixAutoUpdate = false;
            particleSystem.updateMatrix();
            particleSystem.geometry.verticesNeedUpdate = true;
            scene.add(particleSystem);
            mixer.clipAction( geometry.animations[ 0 ], particleSystem )
                    .setDuration( 5 )           // one second
                    .startAt( - Math.random() ) // random phase (already running)
                    .play();                    // let's go
        }
    )
}