Function makeSphereVertices

examples/renderer-test/main.ts:147–167

(radius: number, segs: number, rings: number)

// ---- Mesh generation ----

function makeSphereVertices(radius: number, segs: number, rings: number): number[] {
  const v: number[] = [];
  for (let r = 0; r <= rings; r = r + 1) {
    const phi = PI * r / rings;
    const sp = Math.sin(phi);
    const cp = Math.cos(phi);
    for (let s = 0; s <= segs; s = s + 1) {
      const theta = TWO_PI * s / segs;
      const st = Math.sin(theta);
      const ct = Math.cos(theta);
      const x = sp * ct;
      const y = cp;
      const z = sp * st;
      v.push(x * radius, y * radius, z * radius); // position
      v.push(x, y, z);                             // normal
      v.push(1, 1, 1, 1);                          // color (white)
      v.push(s / segs, r / rings);                  // uv
    }
  }
  return v;
}

function makeSphereIndices(segs: number, rings: number): number[] {
  const idx: number[] = [];