transformUv method

Vector2 transformUv(Vector2 uv)

Implementation

Vector2 transformUv(Vector2 uv) {
  if (mapping != UVMapping) return uv;

  uv.applyMatrix3(matrix);

  if (uv.x < 0 || uv.x > 1) {
    switch (wrapS) {
      case RepeatWrapping:
        uv.x = uv.x - uv.x.floor();
        break;

      case ClampToEdgeWrapping:
        uv.x = uv.x < 0 ? 0 : 1;
        break;

      case MirroredRepeatWrapping:
        if((uv.x.floor().abs() % 2) == 1) {
          uv.x = uv.x.ceil() - uv.x;
        } else {
          uv.x = uv.x - uv.x.floor();
        }

        break;
    }
  }

  if (uv.y < 0 || uv.y > 1) {
    switch (wrapT) {
      case RepeatWrapping:
        uv.y = uv.y - uv.y.floor();
        break;

      case ClampToEdgeWrapping:
        uv.y = uv.y < 0 ? 0 : 1;
        break;

      case MirroredRepeatWrapping:
        if((uv.y.floor().abs() % 2) == 1) {
          uv.y = uv.y.ceil() - uv.y;
        } else {
          uv.y = uv.y - uv.y.floor();
        }

        break;
    }
  }

  if (flipY) {
    uv.y = 1 - uv.y;
  }

  return uv;
}