Create Cube.js

_empty-project-three-p5/js/Cube.js

@@ -0,0 +1,76 @@
+class Cube {
+  constructor() {
+    this.pos = createVector();
+    this.vel = createVector();
+    this.acc = createVector();
+    this.scl = createVector(1, 1, 1);
+    this.mass = 1;
+    //this.setMass(); // feel free to use this method; it arbitrarily defines the mass based on the scale.
+    this.rot = createVector();
+    this.rotVel = createVector();
+    this.rotAcc = createVector();
+    this.mesh = getBox();
+    scene.add(this.mesh); // don't forget to add to scene
+  }
+  setPosition(x, y, z) {
+    this.pos = createVector(x, y, z);
+    return this;
+  }
+  setTranslation(x, y, z) {
+    this.mesh.geometry.translate(x, y, z);
+    return this;
+  }
+  setVelocity(x, y, z) {
+    this.vel = createVector(x, y, z);
+    return this;
+  }
+  setRotationAngle(x, y, z) {
+    this.rot = createVector(x, y, z);
+    return this;
+  }
+  setRotationVelocity(x, y, z) {
+    this.rotVel = createVector(x, y, z);
+    return this;
+  }
+  setScale(w, h = w, d = w) {
+    // or
+    //h = (h === undefined) ? w : h;
+    //d = (d === undefined) ? w : d;
+    const minScale = 0.01;
+    if (w < minScale) w = minScale;
+    if (h < minScale) h = minScale;
+    if (d < minScale) d = minScale;
+    this.scl = createVector(w, h, d);
+    return this;
+  }
+  setMass(mass) {
+    if (mass) {
+      this.mass = mass;
+    } else {
+      this.mass = 1 + (this.scl.x * this.scl.y * this.scl.z) * 0.000001; // arbitrary
+    }
+    return this;
+  }
+  move() {
+    this.vel.add(this.acc);
+    this.pos.add(this.vel);
+    this.acc.mult(0);
+  }
+  rotate() {
+    this.rotVel.add(this.rotAcc);
+    this.rot.add(this.rotVel);
+    this.rotAcc.mult(0);
+  }
+  applyForce(f) {
+    let force = f.copy();
+    if (this.mass > 0) {
+      force.div(this.mass);
+    }
+    this.acc.add(force);
+  }
+  update() {
+    this.mesh.position.set(this.pos.x, this.pos.y, this.pos.z);
+    this.mesh.rotation.set(this.rot.x, this.rot.y, this.rot.z);
+    this.mesh.scale.set(this.scl.x, this.scl.y, this.scl.z);
+  }
+}