Matter.jsRigid bodies Compound bodies Composite bodies Concave and convex hulls Physical properties (mass, area, density etc.) Restitution (elastic and inelastic collisions) Collisions (broad-phase, mid-phase and narrow-phase) Stable stacking and resting Conservation of momentum Friction and resistance Events Constraints Gravity Sleeping and static bodies See all features
GitHub - mourner/rbush: RBush — a high-performance JavaScript R-tree-based 2D spatial index for points and rectangles
