forked from bartvdbraak/blender
208 lines
3.7 KiB
C++
208 lines
3.7 KiB
C++
/**
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* $Id$
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* ***** BEGIN GPL/BL DUAL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version. The Blender
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* Foundation also sells licenses for use in proprietary software under
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* the Blender License. See http://www.blender.org/BL/ for information
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* about this.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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* The Original Code is Copyright (C) 2001-2002 by NaN Holding BV.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): none yet.
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*
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* ***** END GPL/BL DUAL LICENSE BLOCK *****
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*/
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#include "GEN_Matrix4x4.h"
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GEN_Matrix4x4::GEN_Matrix4x4()
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{
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Identity();
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}
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GEN_Matrix4x4::GEN_Matrix4x4(const float value[4][4])
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{
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for (int i=0;i<4;i++)
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{
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for (int j=0;j<4;j++)
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m_V[i][j] = value[i][j];
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}
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}
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GEN_Matrix4x4::GEN_Matrix4x4(const double value[16])
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{
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for (int i=0;i<16;i++)
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m_Vflat[i] = value[i];
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}
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GEN_Matrix4x4::GEN_Matrix4x4(const GEN_Matrix4x4& other)
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{
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SetMatrix(other);
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}
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GEN_Matrix4x4::GEN_Matrix4x4(const MT_Point3& orig,
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const MT_Vector3& dir,
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const MT_Vector3 up)
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{
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MT_Vector3 z = -(dir.normalized());
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MT_Vector3 x = (up.cross(z)).normalized();
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MT_Vector3 y = (z.cross(x));
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m_V[0][0] = x.x();
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m_V[0][1] = y.x();
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m_V[0][2] = z.x();
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m_V[0][3] = 0.0f;
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m_V[1][0] = x.y();
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m_V[1][1] = y.y();
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m_V[1][2] = z.y();
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m_V[1][3] = 0.0f;
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m_V[2][0] = x.z();
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m_V[2][1] = y.z();
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m_V[2][2] = z.z();
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m_V[2][3] = 0.0f;
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m_V[3][0] = orig.x();//0.0f;
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m_V[3][1] = orig.y();//0.0f;
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m_V[3][2] = orig.z();//0.0f;
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m_V[3][3] = 1.0f;
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//Translate(-orig);
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}
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MT_Vector3 GEN_Matrix4x4::GetRight() const
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{
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return MT_Vector3(m_V[0][0], m_V[0][1], m_V[0][2]);
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}
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MT_Vector3 GEN_Matrix4x4::GetUp() const
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{
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return MT_Vector3(m_V[1][0], m_V[1][1], m_V[1][2]);
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}
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MT_Vector3 GEN_Matrix4x4::GetDir() const
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{
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return MT_Vector3(m_V[2][0], m_V[2][1], m_V[2][2]);
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}
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MT_Point3 GEN_Matrix4x4::GetPos() const
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{
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return MT_Point3(m_V[3][0], m_V[3][1], m_V[3][2]);
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}
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void GEN_Matrix4x4::Identity()
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{
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for (int i=0; i<4; i++)
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{
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for (int j=0; j<4; j++)
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m_V[i][j] = (i==j?1.0f:0.0f);
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}
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}
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void GEN_Matrix4x4::SetMatrix(const GEN_Matrix4x4& other)
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{
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for (int i=0; i<16; i++)
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m_Vflat[i] = other.m_Vflat[i];
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}
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double* GEN_Matrix4x4::getPointer()
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{
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return &m_V[0][0];
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}
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const double* GEN_Matrix4x4::getPointer() const
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{
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return &m_V[0][0];
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}
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void GEN_Matrix4x4::setElem(int pos,double newvalue)
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{
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m_Vflat[pos] = newvalue;
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}
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GEN_Matrix4x4 GEN_Matrix4x4::Perspective(MT_Scalar inLeft,
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MT_Scalar inRight,
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MT_Scalar inBottom,
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MT_Scalar inTop,
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MT_Scalar inNear,
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MT_Scalar inFar)
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{
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GEN_Matrix4x4 mat;
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// Column 0
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mat(0, 0) = -(2.0*inNear) / (inRight-inLeft);
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mat(1, 0) = 0;
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mat(2, 0) = 0;
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mat(3, 0) = 0;
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// Column 1
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mat(0, 1) = 0;
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mat(1, 1) = (2.0*inNear) / (inTop-inBottom);
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mat(2, 1) = 0;
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mat(3, 1) = 0;
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// Column 2
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mat(0, 2) = (inRight+inLeft) / (inRight-inLeft);
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mat(1, 2) = (inTop+inBottom) / (inTop-inBottom);
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mat(2, 2) = -(inFar+inNear) / (inFar-inNear);
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mat(3, 2) = -1;
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// Column 3
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mat(0, 3) = 0;
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mat(1, 3) = 0;
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mat(2, 3) = -(2.0*inFar*inNear) / (inFar-inNear);
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mat(3, 3) = 0;
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return mat;
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}
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