Method fetchSplat

src/ExtSplats.ts:270–296

({
    index,
    viewOrigin,
  }: { index: DynoVal<"int">; viewOrigin?: DynoVal<"vec3"> })

  }

  fetchSplat({
    index,
    viewOrigin,
  }: { index: DynoVal<"int">; viewOrigin?: DynoVal<"vec3"> }): DynoVal<
    typeof Gsplat
  > {
    let gsplat = readExtSplat(this.dyno, index);

    if (this.hasRgbDir() && viewOrigin) {
      const splatCenter = splitGsplat(gsplat).outputs.center;
      const viewDir = normalize(sub(splatCenter, viewOrigin));
      const { sh1Texture, sh2Texture, sh3TextureA, sh3TextureB } =
        this.ensureShTextures();
      let { rgb } = evaluateExtSH({
        coord: splatTexCoord(index),
        viewDir,
        numSh: this.dynoNumSh,
        sh1Texture,
        sh2Texture,
        sh3TextureA,
        sh3TextureB,
      });
      rgb = add(rgb, splitGsplat(gsplat).outputs.rgb);
      gsplat = combineGsplat({ gsplat, rgb });
    }
    return gsplat;
  }

  private ensureShTextures(): {
    sh1Texture?: DynoUsampler2DArray<"sh1", THREE.DataArrayTexture>;