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121 lines
3.3 KiB
C++
121 lines
3.3 KiB
C++
/*
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OpenMW - The completely unofficial reimplementation of Morrowind
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Copyright (C) 2008-2010 Nicolay Korslund
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Email: < korslund@gmail.com >
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WWW: https://openmw.org/
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This file (nif_types.h) is part of the OpenMW package.
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OpenMW is distributed as free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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version 3, as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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version 3 along with this program. If not, see
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https://www.gnu.org/licenses/ .
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*/
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#ifndef OPENMW_COMPONENTS_NIF_NIFTYPES_HPP
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#define OPENMW_COMPONENTS_NIF_NIFTYPES_HPP
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#include <osg/Matrixf>
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#include <osg/Quat>
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#include <osg/Vec3f>
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// Common types used in NIF files
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namespace Nif
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{
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struct Matrix3
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{
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float mValues[3][3];
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Matrix3()
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{
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for (int i = 0; i < 3; ++i)
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for (int j = 0; j < 3; ++j)
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mValues[i][j] = (i == j) ? 1.f : 0.f;
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}
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bool isIdentity() const
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{
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for (int i = 0; i < 3; ++i)
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for (int j = 0; j < 3; ++j)
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if ((i == j) != (mValues[i][j] == 1))
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return false;
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return true;
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}
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osg::Matrixf toOsgMatrix() const
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{
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osg::Matrixf osgMat;
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for (int i = 0; i < 3; ++i)
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for (int j = 0; j < 3; ++j)
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osgMat(i, j) = mValues[j][i]; // NB: column/row major difference
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return osgMat;
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}
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};
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struct NiTransform
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{
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Matrix3 mRotation; // this can contain scale components too, including negative and nonuniform scales
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osg::Vec3f mTranslation;
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float mScale;
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osg::Matrixf toMatrix() const
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{
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osg::Matrixf transform;
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transform.setTrans(mTranslation);
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for (int i = 0; i < 3; ++i)
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for (int j = 0; j < 3; ++j)
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transform(j, i) = mRotation.mValues[i][j] * mScale; // NB column/row major difference
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return transform;
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}
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bool isIdentity() const { return mRotation.isIdentity() && mTranslation == osg::Vec3f() && mScale == 1.f; }
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static const NiTransform& getIdentity()
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{
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static const NiTransform identity = { Matrix3(), osg::Vec3f(), 1.0f };
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return identity;
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}
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};
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struct NiQuatTransform
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{
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osg::Vec3f mTranslation;
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osg::Quat mRotation;
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float mScale;
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osg::Matrixf toMatrix() const
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{
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osg::Matrixf transform(mRotation);
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transform.setTrans(mTranslation);
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for (int i = 0; i < 3; i++)
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transform(i, i) *= mScale;
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return transform;
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}
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bool isIdentity() const { return mTranslation == osg::Vec3f() && mRotation == osg::Quat() && mScale == 1.f; }
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static const NiQuatTransform& getIdentity()
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{
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static const NiQuatTransform identity = { osg::Vec3f(), osg::Quat(), 1.f };
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return identity;
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}
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};
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} // Namespace
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#endif
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