1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.geometry.euclidean.threed;
18
19 import java.util.Collections;
20 import java.util.List;
21
22 import org.apache.commons.geometry.core.Transform;
23
24 /** Interface representing a triangle in Euclidean 3D space.
25 */
26 public interface Triangle3D extends ConvexPolygon3D {
27
28 /** The first point in the triangle.
29 * @return the first point in the triangle
30 */
31 Vector3D getPoint1();
32
33 /** The second point in the triangle.
34 * @return the second point in the triangle
35 */
36 Vector3D getPoint2();
37
38 /** The third point in the triangle.
39 * @return the third point in the triangle
40 */
41 Vector3D getPoint3();
42
43 /** {@inheritDoc} */
44 @Override
45 Triangle3D reverse();
46
47 /** {@inheritDoc} */
48 @Override
49 Triangle3D transform(Transform<Vector3D> transform);
50
51 /** {@inheritDoc}
52 *
53 * <p>This method simply returns a singleton list containing this object.</p>
54 */
55 @Override
56 default List<Triangle3D> toTriangles() {
57 return Collections.singletonList(this);
58 }
59 }