Enhance CDN packages and playground

Amp-Thread-ID: https://ampcode.com/threads/T-01a02485-5574-707c-bff4-5668d83bee8a Co-authored-by: Heaust Azure <heaust.azure@gmail.com>
2026-08-22 06:21:39 +00:00
parent 7070799862
commit d95e099fa4
17 changed files with 1870 additions and 247 deletions
@@ -0,0 +1,31 @@
+import { Mesh, type MeshOptions } from "../Mesh";
+import type { Scene } from "../Scene";
+
+export type PlaneOptions = Omit<MeshOptions, "geometryId" | "vertexData"> & {
+  size?: number;
+  width?: number;
+  depth?: number;
+};
+
+function dimension(value: number, name: string) {
+  if (!Number.isFinite(value) || value <= 0) throw new RangeError(name);
+  return value / 2;
+}
+
+/** A horizontal, upward-facing plane centered on its transform. */
+export class Plane extends Mesh {
+  constructor(scene: Scene, options: PlaneOptions = {}) {
+    const { size = 1, width = size, depth = size, ...meshOptions } = options;
+    const x = dimension(width, "width");
+    const z = dimension(depth, "depth");
+    super(scene, {
+      ...meshOptions,
+      vertexData: {
+        positions: [-x, 0, -z, x, 0, -z, x, 0, z, -x, 0, z],
+        normals: [0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0],
+        uvs: [0, 0, 1, 0, 1, 1, 0, 1],
+        indices: [0, 2, 1, 0, 3, 2],
+      },
+    });
+  }
+}