Exemplo n.º 1
0
  public Winding translate(Vector3f offset) {
    if (verts.isEmpty()) {
      return this;
    }

    ArrayList<Vector3f> vertsNew = new ArrayList<>();

    for (Vector3f vert : verts) {
      vertsNew.add(vert.add(offset));
    }

    return new Winding(vertsNew);
  }
Exemplo n.º 2
0
  /**
   * Rotates all vertices in this winding by the given euler angles.
   *
   * @param angles rotation angles
   */
  public Winding rotate(Vector3f angles) {
    if (verts.isEmpty()) {
      return this;
    }

    ArrayList<Vector3f> vertsNew = new ArrayList<>();

    for (Vector3f vert : verts) {
      vertsNew.add(vert.rotate(angles));
    }

    return new Winding(vertsNew);
  }
Exemplo n.º 3
0
  public Winding addBackface() {
    if (verts.isEmpty()) {
      return this;
    }

    List<Vector3f> vertsNew = new ArrayList<>();

    final int size = verts.size();

    for (int i = 0; i < size; i++) {
      if (i != 0) {
        vertsNew.add(verts.get(i));
      }
      if (i != size) {
        vertsNew.add(verts.get(i));
      }
    }

    return new Winding(vertsNew);
  }
Exemplo n.º 4
0
  /**
   * Removes degenerated vertices from this winding. A vertex is degenerated when its distance to
   * the previous vertex is smaller than {@link EPS_DEGEN}.
   *
   * @return number of removed vertices
   */
  public Winding removeDegenerated() {
    if (verts.isEmpty()) {
      return this;
    }

    ArrayList<Vector3f> vertsNew = new ArrayList<>();

    final int size = verts.size();

    for (int i = 0; i < size; i++) {
      int j = (i + 1) % size;
      Vector3f v1 = verts.get(i);
      Vector3f v2 = verts.get(j);

      if (v1.sub(v2).length() > EPS_DEGEN) {
        vertsNew.add(v1);
      }
    }

    return new Winding(vertsNew);
  }
Exemplo n.º 5
0
  /**
   * Removes collinear vertices from this winding.
   *
   * @return number of removed vertices
   */
  public Winding removeCollinear() {
    if (verts.isEmpty()) {
      return this;
    }

    ArrayList<Vector3f> vertsNew = new ArrayList<>();

    final int size = verts.size();

    for (int i = 0; i < size; i++) {
      int j = (i + 1) % size;
      int k = (i + size - 1) % size;
      Vector3f v1 = verts.get(j).sub(verts.get(i)).normalize();
      Vector3f v2 = verts.get(i).sub(verts.get(k)).normalize();

      if (v1.dot(v2) < 0.999) {
        vertsNew.add(verts.get(i));
      }
    }

    return new Winding(vertsNew);
  }
Exemplo n.º 6
0
 @Override
 public boolean isEmpty() {
   return verts.isEmpty();
 }