eulerjs

Rigid body physics for three.js: bodies made straight from your meshes with exact mass properties, joints, and collisions between spheres, boxes, planes and convex hulls.

npm install @eulerjs/core three

import { PlaneCollider, World } from '@eulerjs/core';

const world = new World();
world.addBody(floor, { type: 'static', collider: new PlaneCollider() });
world.addBody(crate, { density: 500, collider: 'box' }); // mass and starting pose from the mesh, a box round it

renderer.setAnimationLoop(() => {
  world.update(clock.getDelta()); // fixed steps, then the meshes follow their bodies
  renderer.render(scene, camera);
});

The mass comes from the mesh; what a body collides as is always your choice. collider has no default, on purpose: without it the body collides with nothing, since the mesh drawn is seldom the shape to collide as.

Needs three 0.166 or later. See the documentation for the full guide, the API reference and live examples, and @eulerjs/marine for water, buoyancy and sails.

MIT licensed.