feat: 1995

engine/scene/Mesh.ts

@@ -0,0 +1,11 @@
+import type { Vec2 } from "../math/Vec2"
+import type { Vec3 } from "../math/Vec3"
+
+/** One mesh vertex: a world-space position and its texture coordinate. uv is in
+ *  tile units, not 0..1, so values >1 repeat the texture (see Texture.sample). */
+export type Vertex = { pos: Vec3; uv: Vec2 }
+
+/** Indexed triangle mesh in world space. `indices` holds three entries per
+ *  triangle, each indexing into `vertices`; sharing vertices between triangles
+ *  keeps seams welded and shrinks the data. */
+export type Mesh = { vertices: Vertex[]; indices: number[] }