Sprite constructor

Sprite([ Material? material ])

Implementation

Sprite([Material? material]) : super() {
  type = 'Sprite';

  if (_geometry == null) {
    _geometry = BufferGeometry();

    var float32List = Float32Array.from([
      -0.5,
      -0.5,
      0,
      0,
      0,
      0.5,
      -0.5,
      0,
      1,
      0,
      0.5,
      0.5,
      0,
      1,
      1,
      -0.5,
      0.5,
      0,
      0,
      1
    ]);

    var interleavedBuffer = InterleavedBuffer(float32List, 5);

    _geometry!.setIndex([0, 1, 2, 0, 2, 3]);
    _geometry!.setAttribute('position',
        InterleavedBufferAttribute(interleavedBuffer, 3, 0, false));
    _geometry!.setAttribute(
        'uv', InterleavedBufferAttribute(interleavedBuffer, 2, 3, false));
  }

  geometry = _geometry;
  this.material = (material != null) ? material : SpriteMaterial(null);
}