geometry3d

---

layout: default title: Geometry 3D

3D Geometry

Overview

3D geometric primitives including spheres, axis-aligned bounding boxes, capsules, edges, planes, and triangles, with raycasting support.

Why Use This?

These primitives are used for 3D physics, collision detection, spatial partitioning, picking, and level geometry.

Shapes

Sphere

A sphere defined by center point and radius. See lm2_sphere.h.

Types: lm2_sphere_f64, lm2_sphere_f32

AABB3

3D axis-aligned bounding box. See lm2_aabb3.h.

Capsule3

A 3D capsule defined by two endpoints and a radius. See lm2_capsule3.h.

Edge3

A 3D line segment defined by two endpoints. See lm2_edge3.h.

Plane3

A 3D plane defined by normal and distance. See lm2_plane3.h.

Triangle3

A 3D triangle with construction and property functions. See lm2_triangle3.h.

Additional triangle geometry functions in lm2_triangle3_geometry.h.

Shape3

A generic 3D shape container. See lm2_shape3.h.

Raycasting

lm2_raycast3.h provides ray-shape intersection queries for 3D shapes.

Example

#include <lm2/geometry3d/lm2_sphere.h>

lm2_sphere_f32 s = { .center = lm2_v3_zero_f32(), .radius = 10.0f };