mirror of
https://github.com/scummvm/scummvm.git
synced 2024-06-11 00:27:09 -04:00
fcb8eda978
Currently we can't quite make Matrix3's default constructor constexpr, as the setToIdentity-call requires C++14.
81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
*/
|
|
|
|
#ifndef MATH_MATRIX3_H
|
|
#define MATH_MATRIX3_H
|
|
|
|
#include "math/rotation3d.h"
|
|
#include "math/squarematrix.h"
|
|
#include "math/vector3d.h"
|
|
|
|
namespace Math {
|
|
|
|
template<>
|
|
class Matrix<3, 3> : public MatrixType<3, 3>, public Rotation3D<Matrix<3, 3> > {
|
|
public:
|
|
Matrix() : MatrixType<3, 3>(), Rotation3D<Matrix<3, 3> >() {}
|
|
Matrix(const MatrixBase<3, 3> &m) :
|
|
MatrixType<3, 3>(m), Rotation3D<Matrix<3, 3> >() {
|
|
}
|
|
|
|
void transpose();
|
|
|
|
|
|
/**
|
|
* Builds a matrix that maps the given local space forward direction vector to point towards the given
|
|
* target direction, and the given local up direction towards the given target world up direction.
|
|
*
|
|
* @param modelForward The forward direction in the local space of the object.
|
|
* @param targetDirection The desired world space direction the object should look at.
|
|
* @param modelUp The up direction in the local space of the object. This vector must be
|
|
* perpendicular to the vector localForward.
|
|
* @param worldUp The global up direction of the scene in world space. The worldUp and targetDirection
|
|
* vectors cannot be collinear, but they do not need to be perpendicular either.
|
|
* All the parameters MUST be normalized.
|
|
*/
|
|
void buildFromTargetDir(const Math::Vector3d &modelForward, const Math::Vector3d &targetDirection,
|
|
const Math::Vector3d &modelUp, const Math::Vector3d &worldUp);
|
|
|
|
inline Matrix<3, 3> operator*(const Matrix<3, 3> &m2) const {
|
|
Matrix<3, 3> result;
|
|
const float *d1 = getData();
|
|
const float *d2 = m2.getData();
|
|
float *r = result.getData();
|
|
|
|
for (int i = 0; i < 9; i += 3) {
|
|
for (int j = 0; j < 3; ++j) {
|
|
r[i + j] = (d1[i + 0] * d2[j + 0])
|
|
+ (d1[i + 1] * d2[j + 3])
|
|
+ (d1[i + 2] * d2[j + 6]);
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
};
|
|
|
|
typedef Matrix<3, 3> Matrix3;
|
|
|
|
} // end of namespace Math
|
|
|
|
#endif
|
|
|