/** * $Id: MT_Matrix4x4.h 26841 2010-02-12 13:34:04Z campbellbarton $ * ***** BEGIN GPL LICENSE BLOCK ***** * * 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 2 * 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, write to the Free Software Foundation, * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. * All rights reserved. * * The Original Code is: all of this file. * * Contributor(s): none yet. * * ***** END GPL LICENSE BLOCK ***** */ /** * $Id: MT_Matrix4x4.h 26841 2010-02-12 13:34:04Z campbellbarton $ * Copyright (C) 2001 NaN Technologies B.V. * A 4x4 matrix compatible with other stuff. */ #ifndef MT_MATRIX4X4_H #define MT_MATRIX4X4_H #include #include "MT_Vector4.h" #include "MT_Transform.h" // Row-major 4x4 matrix class MT_Matrix4x4 { public: /** * Empty contructor. */ MT_Matrix4x4() {} /** * Initialize all fields with the values pointed at by m. A * contigous block of 16 values is read. */ MT_Matrix4x4(const float *m) { setValue(m); } /** * Initialize all fields with the values pointed at by m. A * contigous block of 16 values is read. */ MT_Matrix4x4(const double *m) { setValue(m); } /** * Initialise with these 16 explicit values. */ MT_Matrix4x4(MT_Scalar xx, MT_Scalar xy, MT_Scalar xz, MT_Scalar xw, MT_Scalar yx, MT_Scalar yy, MT_Scalar yz, MT_Scalar yw, MT_Scalar zx, MT_Scalar zy, MT_Scalar zz, MT_Scalar zw, MT_Scalar wx, MT_Scalar wy, MT_Scalar wz, MT_Scalar ww) { setValue(xx, xy, xz, xw, yx, yy, yz, yw, zx, zy, zz, zw, wx, wy, wz, ww); } /** * Initialize from an MT_Transform. */ MT_Matrix4x4(const MT_Transform &t) { const MT_Matrix3x3 &basis = t.getBasis(); const MT_Vector3 &origin = t.getOrigin(); setValue( basis[0][0],basis[0][1],basis[0][2],origin[0], basis[1][0],basis[1][1],basis[1][2],origin[1], basis[2][0],basis[2][1],basis[2][2],origin[2], MT_Scalar(0),MT_Scalar(0),MT_Scalar(0),MT_Scalar(1) ); } /** * Get the i-th row. */ MT_Vector4& operator[](int i) { return m_el[i]; } /** * Get the i-th row. */ const MT_Vector4& operator[](int i) const { return m_el[i]; } /** * Set the matrix to the values pointer at by m. A contiguous * block of 16 values is copied. */ void setValue(const float *m) { m_el[0][0] = *m++; m_el[1][0] = *m++; m_el[2][0] = *m++; m_el[3][0] = *m++; m_el[0][1] = *m++; m_el[1][1] = *m++; m_el[2][1] = *m++; m_el[3][1] = *m++; m_el[0][2] = *m++; m_el[1][2] = *m++; m_el[2][2] = *m++; m_el[3][2] = *m++; m_el[0][3] = *m++; m_el[1][3] = *m++; m_el[2][3] = *m++; m_el[3][3] = *m; } /** * Set the matrix to the values pointer at by m. A contiguous * block of 16 values is copied. */ void setValue(const double *m) { m_el[0][0] = *m++; m_el[1][0] = *m++; m_el[2][0] = *m++; m_el[3][0] = *m++; m_el[0][1] = *m++; m_el[1][1] = *m++; m_el[2][1] = *m++; m_el[3][1] = *m++; m_el[0][2] = *m++; m_el[1][2] = *m++; m_el[2][2] = *m++; m_el[3][2] = *m++; m_el[0][3] = *m++; m_el[1][3] = *m++; m_el[2][3] = *m++; m_el[3][3] = *m; } /** * Set the matrix to these 16 explicit values. */ void setValue(MT_Scalar xx, MT_Scalar xy, MT_Scalar xz, MT_Scalar xw, MT_Scalar yx, MT_Scalar yy, MT_Scalar yz, MT_Scalar yw, MT_Scalar zx, MT_Scalar zy, MT_Scalar zz, MT_Scalar zw, MT_Scalar wx, MT_Scalar wy, MT_Scalar wz, MT_Scalar ww) { m_el[0][0] = xx; m_el[0][1] = xy; m_el[0][2] = xz; m_el[0][3] = xw; m_el[1][0] = yx; m_el[1][1] = yy; m_el[1][2] = yz; m_el[1][3] = yw; m_el[2][0] = zx; m_el[2][1] = zy; m_el[2][2] = zz; m_el[2][3] = zw; m_el[3][0] = wx; m_el[3][1] = wy; m_el[3][2] = wz; m_el[3][3] = ww; } /** * Scale the columns of this matrix with x, y, z, w respectively. */ void scale(MT_Scalar x, MT_Scalar y, MT_Scalar z, MT_Scalar w) { m_el[0][0] *= x; m_el[0][1] *= y; m_el[0][2] *= z; m_el[0][3] *= w; m_el[1][0] *= x; m_el[1][1] *= y; m_el[1][2] *= z; m_el[1][3] *= w; m_el[2][0] *= x; m_el[2][1] *= y; m_el[2][2] *= z; m_el[2][3] *= w; m_el[3][0] *= x; m_el[3][1] *= y; m_el[3][2] *= z; m_el[3][3] *= w; } /** * Return a column-scaled version of this matrix. */ MT_Matrix4x4 scaled(MT_Scalar x, MT_Scalar y, MT_Scalar z, MT_Scalar w) const { return MT_Matrix4x4(m_el[0][0] * x, m_el[0][1] * y, m_el[0][2] * z, m_el[0][3] * w, m_el[1][0] * x, m_el[1][1] * y, m_el[1][2] * z, m_el[1][3] * w, m_el[2][0] * x, m_el[2][1] * y, m_el[2][2] * z, m_el[2][3] * w, m_el[3][0] * x, m_el[3][1] * y, m_el[3][2] * z, m_el[3][3] * w); } /** * Set this matrix to I. */ void setIdentity() { setValue(MT_Scalar(1.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(1.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(1.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(0.0), MT_Scalar(1.0)); } /** * Read the element from row i, column j. */ float getElement(int i, int j) { return (float) m_el[i][j]; } /** * Copy the contents to a contiguous block of 16 floats. */ void getValue(float *m) const { *m++ = (float) m_el[0][0]; *m++ = (float) m_el[1][0]; *m++ = (float) m_el[2][0]; *m++ = (float) m_el[3][0]; *m++ = (float) m_el[0][1]; *m++ = (float) m_el[1][1]; *m++ = (float) m_el[2][1]; *m++ = (float) m_el[3][1]; *m++ = (float) m_el[0][2]; *m++ = (float) m_el[1][2]; *m++ = (float) m_el[2][2]; *m++ = (float) m_el[3][2]; *m++ = (float) m_el[0][3]; *m++ = (float) m_el[1][3]; *m++ = (float) m_el[2][3]; *m = (float) m_el[3][3]; } /** * Copy the contents to a contiguous block of 16 doubles. */ void getValue(double *m) const { *m++ = m_el[0][0]; *m++ = m_el[1][0]; *m++ = m_el[2][0]; *m++ = m_el[3][0]; *m++ = m_el[0][1]; *m++ = m_el[1][1]; *m++ = m_el[2][1]; *m++ = m_el[3][1]; *m++ = m_el[0][2]; *m++ = m_el[1][2]; *m++ = m_el[2][2]; *m++ = m_el[3][2]; *m++ = m_el[0][3]; *m++ = m_el[1][3]; *m++ = m_el[2][3]; *m = m_el[3][3]; } /** * Left-multiply this matrix with the argument. */ MT_Matrix4x4& operator*=(const MT_Matrix4x4& m); /** * Left-multiply column c with row vector c. */ MT_Scalar tdot(int c, const MT_Vector4& v) const { return m_el[0][c] * v[0] + m_el[1][c] * v[1] + m_el[2][c] * v[2] + m_el[3][c] * v[3]; } /* I'll postpone this for now... - nzc*/ /* MT_Scalar determinant() const; */ /* MT_Matrix4x4 adjoint() const; */ /* MT_Matrix4x4 inverse() const; */ MT_Matrix4x4 absolute() const; MT_Matrix4x4 transposed() const; void transpose(); MT_Matrix4x4 inverse() const; void invert(); protected: /** * Access with [row index][column index] */ MT_Vector4 m_el[4]; }; /* These multiplicators do exactly what you ask from them: they * multiply in the indicated order. */ MT_Vector4 operator*(const MT_Matrix4x4& m, const MT_Vector4& v); MT_Vector4 operator*(const MT_Vector4& v, const MT_Matrix4x4& m); MT_Matrix4x4 operator*(const MT_Matrix4x4& m1, const MT_Matrix4x4& m2); /* MT_Matrix4x4 MT_multTransposeLeft(const MT_Matrix4x4& m1, const MT_Matrix4x4& m2); */ /* MT_Matrix4x4 MT_multTransposeRight(const MT_Matrix4x4& m1, const MT_Matrix4x4& m2); */ inline MT_OStream& operator<<(MT_OStream& os, const MT_Matrix4x4& m) { return os << m[0] << GEN_endl << m[1] << GEN_endl << m[2] << GEN_endl << m[3] << GEN_endl; } #ifdef GEN_INLINED #include "MT_Matrix4x4.inl" #endif #endif