transformUv method

dynamic transformUv(dynamic uv)

Implementation

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

  uv.applyMatrix3(matrix);

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

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

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

        break;
    }
  }

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

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

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

        break;
    }
  }

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

  return uv;
}