javascript - 粒子.subSelf()未定义不是一个函数

Question

我试图为具有三的粒子提供速度和原点，但我无法添加原点

 function getOrigin() {
    return new THREE.Vector3(Weapon.vehicle.position.x, Weapon.vehicle.position.y, Weapon.vehicle.position.z);
}
function start() {
    time = Weapon.time;
    done = false;

    var origin = getOrigin();
    particles = new THREE.Geometry();
    var pMaterial = new THREE.ParticleBasicMaterial({
        color: Weapon.explosion.color,
        size: Weapon.explosion.size,
        map: THREE.ImageUtils.loadTexture("img/particula.png"),
        blending: THREE.AdditiveBlending,
        transparent: true
    });
    for(var p = 0; p < particleCount; p++) {
        // create a particle with random
        // position values, -250 -> 250
        var pX = (Math.random() * Weapon.vehicle.size.x) - (Weapon.vehicle.size.x / 2),
            pY = (Math.random() * Weapon.vehicle.size.y) - (Weapon.vehicle.size.y / 2),
            pZ = (Math.random() * Weapon.vehicle.size.z) - (Weapon.vehicle.size.z / 2),
            particle = new THREE.Vector3(pX, pY, pZ);

        // create a velocity vector
        particle.velocity = particle.clone();
        particle.addSelf(origin);

        // add it to the geometry
        particles.vertices.push(particle);
    }

    // create the particle system
    particleSystem = new THREE.ParticleSystem(particles, pMaterial);
    particleSystem.sortParticles = true;
    scene.add(particleSystem);
}

粒子.addSelf(origin);这条线给了我一个未定义的函数，它可以在旧版本的三元组中正常工作，但我想从 r52 升级到 r67，并且我发现了很多问题，如果您有任何想法，我们将不胜感激。

Answer 1

您可以在此处找到迁移说明:https://github.com/mrdoob/three.js/wiki/Migration以及此处的发行说明:https://github.com/mrdoob/three.js/releases