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.examples.io.threed.obj;
18
19 import java.nio.charset.Charset;
20 import java.nio.charset.StandardCharsets;
21
22 /** Class containing constants for use with OBJ files.
23 */
24 final class OBJConstants {
25 /** Default OBJ charset. */
26 static final Charset DEFAULT_CHARSET = StandardCharsets.UTF_8;
27
28 /** Character used to indicate the start of a comment line. */
29 static final char COMMENT_START_CHAR = '#';
30
31 /** Keyword used to indicate a vertex definition line. */
32 static final String VERTEX_KEYWORD = "v";
33
34 /** Keyword used to indicate a face definition line. */
35 static final String FACE_KEYWORD = "f";
36
37 /** Keyword used to indicate a geometry group. */
38 static final String GROUP_KEYWORD = "g";
39
40 /** Keyword used to associate a name with the following geometry. */
41 static final String OBJECT_KEYWORD = "o";
42
43 /** Character used to separate face vertex indices from texture and normal indices. */
44 static final char FACE_VALUE_SEP_CHAR = '/';
45
46 /** Utility class; no instantiation. */
47 private OBJConstants() {}
48 }