comparison: src/basics.h
src/basics.h
- changeset 3
- 55a55a9ec2c2
- child 6
- 73e448b2943d
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| 1 /* | |
| 2 * LDForge: LDraw parts authoring CAD | |
| 3 * Copyright (C) 2019 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 #pragma once | |
| 20 #include <cstdio> | |
| 21 #include <cstdlib> | |
| 22 #include <cmath> | |
| 23 #include <QMatrix4x4> | |
| 24 #include <QObject> | |
| 25 #include <QPointF> | |
| 26 #include <QSet> | |
| 27 #include <QString> | |
| 28 #include <QStringList> | |
| 29 #include <QVariant> | |
| 30 #include <QVector> | |
| 31 #include <QVector3D> | |
| 32 | |
| 33 using GLRotationMatrix = QMatrix4x4; | |
| 34 | |
| 35 enum Axis | |
| 36 { | |
| 37 X, | |
| 38 Y, | |
| 39 Z | |
| 40 }; | |
| 41 | |
| 42 enum Winding | |
| 43 { | |
| 44 NoWinding, | |
| 45 CounterClockwise, | |
| 46 Clockwise, | |
| 47 }; | |
| 48 | |
| 49 /* | |
| 50 * Special operator definition that implements the XOR operator for windings. | |
| 51 * However, if either winding is NoWinding, then this function returns NoWinding. | |
| 52 */ | |
| 53 inline Winding operator^(Winding one, Winding other) | |
| 54 { | |
| 55 if (one == NoWinding or other == NoWinding) | |
| 56 return NoWinding; | |
| 57 else | |
| 58 return static_cast<Winding>(static_cast<int>(one) ^ static_cast<int>(other)); | |
| 59 } | |
| 60 | |
| 61 inline Winding& operator^=(Winding& one, Winding other) | |
| 62 { | |
| 63 one = one ^ other; | |
| 64 return one; | |
| 65 } | |
| 66 | |
| 67 template<typename T, std::size_t N> | |
| 68 constexpr std::size_t countof(T(&)[N]) | |
| 69 { | |
| 70 return N; | |
| 71 } | |
| 72 | |
| 73 static constexpr long double pi = M_PIl; | |
| 74 | |
| 75 // http://stackoverflow.com/a/18204188/3629665 | |
| 76 template<typename T> | |
| 77 inline auto rotl10(T x) | |
| 78 -> std::enable_if_t<std::is_arithmetic_v<T>, T> | |
| 79 { | |
| 80 return (x << 10) | ((x >> 22) & 0x000000ff); | |
| 81 } | |
| 82 | |
| 83 template<typename T> | |
| 84 inline auto rotl20(T x) | |
| 85 -> std::enable_if_t<std::is_arithmetic_v<T>, T> | |
| 86 { | |
| 87 return (x << 20) | ((x >> 12) & 0x000000ff); | |
| 88 } |
