src/linetypes/triangle.cpp

changeset 1148
96cb15a7611f
child 1261
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equal deleted inserted replaced
1147:a26568aa3cce 1148:96cb15a7611f
1 /*
2 * LDForge: LDraw parts authoring CAD
3 * Copyright (C) 2013 - 2017 Teemu Piippo
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 #include "triangle.h"
20
21 LDTriangle::LDTriangle(Model *model) :
22 LDObject {model} {}
23
24 LDTriangle::LDTriangle(const Vertex& v1, const Vertex& v2, const Vertex& v3, Model* model) :
25 LDObject {model}
26 {
27 setVertex(0, v1);
28 setVertex(1, v2);
29 setVertex(2, v3);
30 }
31
32 int LDTriangle::triangleCount() const
33 {
34 return 1;
35 }
36
37 QString LDTriangle::asText() const
38 {
39 QString result = format("3 %1", color());
40
41 for (int i = 0; i < 3; ++i)
42 result += format(" %1", vertex (i));
43
44 return result;
45 }
46
47 void LDTriangle::invert()
48 {
49 // Triangle goes 0 -> 1 -> 2, reversed: 0 -> 2 -> 1.
50 // Thus, we swap 1 and 2.
51 Vertex temp = vertex(1);
52 setVertex(1, vertex(2));
53 setVertex(2, temp);
54 }

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