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-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-/**
- * Contains code for 3x3 matrices.
- * \file IceMatrix3x3.h
- * \author Pierre Terdiman
- * \date April, 4, 2000
- */
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-
-///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
-// Include Guard
-#ifndef __ICEMATRIX3X3_H__
-#define __ICEMATRIX3X3_H__
-
- // Forward declarations
- class Quat;
-
- #define MATRIX3X3_EPSILON (1.0e-7f)
-
- class ICEMATHS_API Matrix3x3
- {
- public:
- //! Empty constructor
- inline_ Matrix3x3() {}
- //! Constructor from 9 values
- inline_ Matrix3x3(float m00, float m01, float m02, float m10, float m11, float m12, float m20, float m21, float m22)
- {
- m[0][0] = m00; m[0][1] = m01; m[0][2] = m02;
- m[1][0] = m10; m[1][1] = m11; m[1][2] = m12;
- m[2][0] = m20; m[2][1] = m21; m[2][2] = m22;
- }
- //! Copy constructor
- inline_ Matrix3x3(const Matrix3x3& mat) { CopyMemory(m, &mat.m, 9*sizeof(float)); }
- //! Destructor
- inline_ ~Matrix3x3() {}
-
- //! Assign values
- inline_ void Set(float m00, float m01, float m02, float m10, float m11, float m12, float m20, float m21, float m22)
- {
- m[0][0] = m00; m[0][1] = m01; m[0][2] = m02;
- m[1][0] = m10; m[1][1] = m11; m[1][2] = m12;
- m[2][0] = m20; m[2][1] = m21; m[2][2] = m22;
- }
-
- //! Sets the scale from a Point. The point is put on the diagonal.
- inline_ void SetScale(const IcePoint& p) { m[0][0] = p.x; m[1][1] = p.y; m[2][2] = p.z; }
-
- //! Sets the scale from floats. Values are put on the diagonal.
- inline_ void SetScale(float sx, float sy, float sz) { m[0][0] = sx; m[1][1] = sy; m[2][2] = sz; }
-
- //! Scales from a Point. Each row is multiplied by a component.
- inline_ void Scale(const IcePoint& p)
- {
- m[0][0] *= p.x; m[0][1] *= p.x; m[0][2] *= p.x;
- m[1][0] *= p.y; m[1][1] *= p.y; m[1][2] *= p.y;
- m[2][0] *= p.z; m[2][1] *= p.z; m[2][2] *= p.z;
- }
-
- //! Scales from floats. Each row is multiplied by a value.
- inline_ void Scale(float sx, float sy, float sz)
- {
- m[0][0] *= sx; m[0][1] *= sx; m[0][2] *= sx;
- m[1][0] *= sy; m[1][1] *= sy; m[1][2] *= sy;
- m[2][0] *= sz; m[2][1] *= sz; m[2][2] *= sz;
- }
-
- //! Copy from a Matrix3x3
- inline_ void Copy(const Matrix3x3& source) { CopyMemory(m, source.m, 9*sizeof(float)); }
-
- // Row-column access
- //! Returns a row.
- inline_ void GetRow(const udword r, IcePoint& p) const { p.x = m[r][0]; p.y = m[r][1]; p.z = m[r][2]; }
- //! Returns a row.
- inline_ const IcePoint& GetRow(const udword r) const { return *(const IcePoint*)&m[r][0]; }
- //! Returns a row.
- inline_ IcePoint& GetRow(const udword r) { return *(IcePoint*)&m[r][0]; }
- //! Sets a row.
- inline_ void SetRow(const udword r, const IcePoint& p) { m[r][0] = p.x; m[r][1] = p.y; m[r][2] = p.z; }
- //! Returns a column.
- inline_ void GetCol(const udword c, IcePoint& p) const { p.x = m[0][c]; p.y = m[1][c]; p.z = m[2][c]; }
- //! Sets a column.
- inline_ void SetCol(const udword c, const IcePoint& p) { m[0][c] = p.x; m[1][c] = p.y; m[2][c] = p.z; }
-
- //! Computes the trace. The trace is the sum of the 3 diagonal components.
- inline_ float Trace() const { return m[0][0] + m[1][1] + m[2][2]; }
- //! Clears the matrix.
- inline_ void Zero() { ZeroMemory(&m, sizeof(m)); }
- //! Sets the identity matrix.
- inline_ void Identity() { Zero(); m[0][0] = m[1][1] = m[2][2] = 1.0f; }
- //! Checks for identity
- inline_ bool IsIdentity() const
- {
- if(IR(m[0][0])!=IEEE_1_0) return false;
- if(IR(m[0][1])!=0) return false;
- if(IR(m[0][2])!=0) return false;
-
- if(IR(m[1][0])!=0) return false;
- if(IR(m[1][1])!=IEEE_1_0) return false;
- if(IR(m[1][2])!=0) return false;
-
- if(IR(m[2][0])!=0) return false;
- if(IR(m[2][1])!=0) return false;
- if(IR(m[2][2])!=IEEE_1_0) return false;
-
- return true;
- }
-
- //! Checks matrix validity
- inline_ BOOL IsValid() const
- {
- for(udword j=0;j<3;j++)
- {
- for(udword i=0;i<3;i++)
- {
- if(!IsValidFloat(m[j][i])) return FALSE;
- }
- }
- return TRUE;
- }
-
- //! Makes a skew-symmetric matrix (a.k.a. Star(*) Matrix)
- //! [ 0.0 -a.z a.y ]
- //! [ a.z 0.0 -a.x ]
- //! [ -a.y a.x 0.0 ]
- //! This is also called a "cross matrix" since for any vectors A and B,
- //! A^B = Skew(A) * B = - B * Skew(A);
- inline_ void SkewSymmetric(const IcePoint& a)
- {
- m[0][0] = 0.0f;
- m[0][1] = -a.z;
- m[0][2] = a.y;
-
- m[1][0] = a.z;
- m[1][1] = 0.0f;
- m[1][2] = -a.x;
-
- m[2][0] = -a.y;
- m[2][1] = a.x;
- m[2][2] = 0.0f;
- }
-
- //! Negates the matrix
- inline_ void Neg()
- {
- m[0][0] = -m[0][0]; m[0][1] = -m[0][1]; m[0][2] = -m[0][2];
- m[1][0] = -m[1][0]; m[1][1] = -m[1][1]; m[1][2] = -m[1][2];
- m[2][0] = -m[2][0]; m[2][1] = -m[2][1]; m[2][2] = -m[2][2];
- }
-
- //! Neg from another matrix
- inline_ void Neg(const Matrix3x3& mat)
- {
- m[0][0] = -mat.m[0][0]; m[0][1] = -mat.m[0][1]; m[0][2] = -mat.m[0][2];
- m[1][0] = -mat.m[1][0]; m[1][1] = -mat.m[1][1]; m[1][2] = -mat.m[1][2];
- m[2][0] = -mat.m[2][0]; m[2][1] = -mat.m[2][1]; m[2][2] = -mat.m[2][2];
- }
-
- //! Add another matrix
- inline_ void Add(const Matrix3x3& mat)
- {
- m[0][0] += mat.m[0][0]; m[0][1] += mat.m[0][1]; m[0][2] += mat.m[0][2];
- m[1][0] += mat.m[1][0]; m[1][1] += mat.m[1][1]; m[1][2] += mat.m[1][2];
- m[2][0] += mat.m[2][0]; m[2][1] += mat.m[2][1]; m[2][2] += mat.m[2][2];
- }
-
- //! Sub another matrix
- inline_ void Sub(const Matrix3x3& mat)
- {
- m[0][0] -= mat.m[0][0]; m[0][1] -= mat.m[0][1]; m[0][2] -= mat.m[0][2];
- m[1][0] -= mat.m[1][0]; m[1][1] -= mat.m[1][1]; m[1][2] -= mat.m[1][2];
- m[2][0] -= mat.m[2][0]; m[2][1] -= mat.m[2][1]; m[2][2] -= mat.m[2][2];
- }
- //! Mac
- inline_ void Mac(const Matrix3x3& a, const Matrix3x3& b, float s)
- {
- m[0][0] = a.m[0][0] + b.m[0][0] * s;
- m[0][1] = a.m[0][1] + b.m[0][1] * s;
- m[0][2] = a.m[0][2] + b.m[0][2] * s;
-
- m[1][0] = a.m[1][0] + b.m[1][0] * s;
- m[1][1] = a.m[1][1] + b.m[1][1] * s;
- m[1][2] = a.m[1][2] + b.m[1][2] * s;
-
- m[2][0] = a.m[2][0] + b.m[2][0] * s;
- m[2][1] = a.m[2][1] + b.m[2][1] * s;
- m[2][2] = a.m[2][2] + b.m[2][2] * s;
- }
- //! Mac
- inline_ void Mac(const Matrix3x3& a, float s)
- {
- m[0][0] += a.m[0][0] * s; m[0][1] += a.m[0][1] * s; m[0][2] += a.m[0][2] * s;
- m[1][0] += a.m[1][0] * s; m[1][1] += a.m[1][1] * s; m[1][2] += a.m[1][2] * s;
- m[2][0] += a.m[2][0] * s; m[2][1] += a.m[2][1] * s; m[2][2] += a.m[2][2] * s;
- }
-
- //! this = A * s
- inline_ void Mult(const Matrix3x3& a, float s)
- {
- m[0][0] = a.m[0][0] * s; m[0][1] = a.m[0][1] * s; m[0][2] = a.m[0][2] * s;
- m[1][0] = a.m[1][0] * s; m[1][1] = a.m[1][1] * s; m[1][2] = a.m[1][2] * s;
- m[2][0] = a.m[2][0] * s; m[2][1] = a.m[2][1] * s; m[2][2] = a.m[2][2] * s;
- }
-
- inline_ void Add(const Matrix3x3& a, const Matrix3x3& b)
- {
- m[0][0] = a.m[0][0] + b.m[0][0]; m[0][1] = a.m[0][1] + b.m[0][1]; m[0][2] = a.m[0][2] + b.m[0][2];
- m[1][0] = a.m[1][0] + b.m[1][0]; m[1][1] = a.m[1][1] + b.m[1][1]; m[1][2] = a.m[1][2] + b.m[1][2];
- m[2][0] = a.m[2][0] + b.m[2][0]; m[2][1] = a.m[2][1] + b.m[2][1]; m[2][2] = a.m[2][2] + b.m[2][2];
- }
-
- inline_ void Sub(const Matrix3x3& a, const Matrix3x3& b)
- {
- m[0][0] = a.m[0][0] - b.m[0][0]; m[0][1] = a.m[0][1] - b.m[0][1]; m[0][2] = a.m[0][2] - b.m[0][2];
- m[1][0] = a.m[1][0] - b.m[1][0]; m[1][1] = a.m[1][1] - b.m[1][1]; m[1][2] = a.m[1][2] - b.m[1][2];
- m[2][0] = a.m[2][0] - b.m[2][0]; m[2][1] = a.m[2][1] - b.m[2][1]; m[2][2] = a.m[2][2] - b.m[2][2];
- }
-
- //! this = a * b
- inline_ void Mult(const Matrix3x3& a, const Matrix3x3& b)
- {
- m[0][0] = a.m[0][0] * b.m[0][0] + a.m[0][1] * b.m[1][0] + a.m[0][2] * b.m[2][0];
- m[0][1] = a.m[0][0] * b.m[0][1] + a.m[0][1] * b.m[1][1] + a.m[0][2] * b.m[2][1];
- m[0][2] = a.m[0][0] * b.m[0][2] + a.m[0][1] * b.m[1][2] + a.m[0][2] * b.m[2][2];
- m[1][0] = a.m[1][0] * b.m[0][0] + a.m[1][1] * b.m[1][0] + a.m[1][2] * b.m[2][0];
- m[1][1] = a.m[1][0] * b.m[0][1] + a.m[1][1] * b.m[1][1] + a.m[1][2] * b.m[2][1];
- m[1][2] = a.m[1][0] * b.m[0][2] + a.m[1][1] * b.m[1][2] + a.m[1][2] * b.m[2][2];
- m[2][0] = a.m[2][0] * b.m[0][0] + a.m[2][1] * b.m[1][0] + a.m[2][2] * b.m[2][0];
- m[2][1] = a.m[2][0] * b.m[0][1] + a.m[2][1] * b.m[1][1] + a.m[2][2] * b.m[2][1];
- m[2][2] = a.m[2][0] * b.m[0][2] + a.m[2][1] * b.m[1][2] + a.m[2][2] * b.m[2][2];
- }
-
- //! this = transpose(a) * b
- inline_ void MultAtB(const Matrix3x3& a, const Matrix3x3& b)
- {
- m[0][0] = a.m[0][0] * b.m[0][0] + a.m[1][0] * b.m[1][0] + a.m[2][0] * b.m[2][0];
- m[0][1] = a.m[0][0] * b.m[0][1] + a.m[1][0] * b.m[1][1] + a.m[2][0] * b.m[2][1];
- m[0][2] = a.m[0][0] * b.m[0][2] + a.m[1][0] * b.m[1][2] + a.m[2][0] * b.m[2][2];
- m[1][0] = a.m[0][1] * b.m[0][0] + a.m[1][1] * b.m[1][0] + a.m[2][1] * b.m[2][0];
- m[1][1] = a.m[0][1] * b.m[0][1] + a.m[1][1] * b.m[1][1] + a.m[2][1] * b.m[2][1];
- m[1][2] = a.m[0][1] * b.m[0][2] + a.m[1][1] * b.m[1][2] + a.m[2][1] * b.m[2][2];
- m[2][0] = a.m[0][2] * b.m[0][0] + a.m[1][2] * b.m[1][0] + a.m[2][2] * b.m[2][0];
- m[2][1] = a.m[0][2] * b.m[0][1] + a.m[1][2] * b.m[1][1] + a.m[2][2] * b.m[2][1];
- m[2][2] = a.m[0][2] * b.m[0][2] + a.m[1][2] * b.m[1][2] + a.m[2][2] * b.m[2][2];
- }
-
- //! this = a * transpose(b)
- inline_ void MultABt(const Matrix3x3& a, const Matrix3x3& b)
- {
- m[0][0] = a.m[0][0] * b.m[0][0] + a.m[0][1] * b.m[0][1] + a.m[0][2] * b.m[0][2];
- m[0][1] = a.m[0][0] * b.m[1][0] + a.m[0][1] * b.m[1][1] + a.m[0][2] * b.m[1][2];
- m[0][2] = a.m[0][0] * b.m[2][0] + a.m[0][1] * b.m[2][1] + a.m[0][2] * b.m[2][2];
- m[1][0] = a.m[1][0] * b.m[0][0] + a.m[1][1] * b.m[0][1] + a.m[1][2] * b.m[0][2];
- m[1][1] = a.m[1][0] * b.m[1][0] + a.m[1][1] * b.m[1][1] + a.m[1][2] * b.m[1][2];
- m[1][2] = a.m[1][0] * b.m[2][0] + a.m[1][1] * b.m[2][1] + a.m[1][2] * b.m[2][2];
- m[2][0] = a.m[2][0] * b.m[0][0] + a.m[2][1] * b.m[0][1] + a.m[2][2] * b.m[0][2];
- m[2][1] = a.m[2][0] * b.m[1][0] + a.m[2][1] * b.m[1][1] + a.m[2][2] * b.m[1][2];
- m[2][2] = a.m[2][0] * b.m[2][0] + a.m[2][1] * b.m[2][1] + a.m[2][2] * b.m[2][2];
- }
-
- //! Makes a rotation matrix mapping vector "from" to vector "to".
- Matrix3x3& FromTo(const IcePoint& from, const IcePoint& to);
-
- //! Set a rotation matrix around the X axis.
- //! 1 0 0
- //! RX = 0 cx sx
- //! 0 -sx cx
- void RotX(float angle);
- //! Set a rotation matrix around the Y axis.
- //! cy 0 -sy
- //! RY = 0 1 0
- //! sy 0 cy
- void RotY(float angle);
- //! Set a rotation matrix around the Z axis.
- //! cz sz 0
- //! RZ = -sz cz 0
- //! 0 0 1
- void RotZ(float angle);
- //! cy sx.sy -sy.cx
- //! RY.RX 0 cx sx
- //! sy -sx.cy cx.cy
- void RotYX(float y, float x);
-
- //! Make a rotation matrix about an arbitrary axis
- Matrix3x3& Rot(float angle, const IcePoint& axis);
-
- //! Transpose the matrix.
- void Transpose()
- {
- IR(m[1][0]) ^= IR(m[0][1]); IR(m[0][1]) ^= IR(m[1][0]); IR(m[1][0]) ^= IR(m[0][1]);
- IR(m[2][0]) ^= IR(m[0][2]); IR(m[0][2]) ^= IR(m[2][0]); IR(m[2][0]) ^= IR(m[0][2]);
- IR(m[2][1]) ^= IR(m[1][2]); IR(m[1][2]) ^= IR(m[2][1]); IR(m[2][1]) ^= IR(m[1][2]);
- }
-
- //! this = Transpose(a)
- void Transpose(const Matrix3x3& a)
- {
- m[0][0] = a.m[0][0]; m[0][1] = a.m[1][0]; m[0][2] = a.m[2][0];
- m[1][0] = a.m[0][1]; m[1][1] = a.m[1][1]; m[1][2] = a.m[2][1];
- m[2][0] = a.m[0][2]; m[2][1] = a.m[1][2]; m[2][2] = a.m[2][2];
- }
-
- //! Compute the determinant of the matrix. We use the rule of Sarrus.
- float Determinant() const
- {
- return (m[0][0]*m[1][1]*m[2][2] + m[0][1]*m[1][2]*m[2][0] + m[0][2]*m[1][0]*m[2][1])
- - (m[2][0]*m[1][1]*m[0][2] + m[2][1]*m[1][2]*m[0][0] + m[2][2]*m[1][0]*m[0][1]);
- }
-/*
- //! Compute a cofactor. Used for matrix inversion.
- float CoFactor(ubyte row, ubyte column) const
- {
- static sdword gIndex[3+2] = { 0, 1, 2, 0, 1 };
- return (m[gIndex[row+1]][gIndex[column+1]]*m[gIndex[row+2]][gIndex[column+2]] - m[gIndex[row+2]][gIndex[column+1]]*m[gIndex[row+1]][gIndex[column+2]]);
- }
-*/
- //! Invert the matrix. Determinant must be different from zero, else matrix can't be inverted.
- Matrix3x3& Invert()
- {
- float Det = Determinant(); // Must be !=0
- float OneOverDet = 1.0f / Det;
-
- Matrix3x3 Temp;
- Temp.m[0][0] = +(m[1][1] * m[2][2] - m[2][1] * m[1][2]) * OneOverDet;
- Temp.m[1][0] = -(m[1][0] * m[2][2] - m[2][0] * m[1][2]) * OneOverDet;
- Temp.m[2][0] = +(m[1][0] * m[2][1] - m[2][0] * m[1][1]) * OneOverDet;
- Temp.m[0][1] = -(m[0][1] * m[2][2] - m[2][1] * m[0][2]) * OneOverDet;
- Temp.m[1][1] = +(m[0][0] * m[2][2] - m[2][0] * m[0][2]) * OneOverDet;
- Temp.m[2][1] = -(m[0][0] * m[2][1] - m[2][0] * m[0][1]) * OneOverDet;
- Temp.m[0][2] = +(m[0][1] * m[1][2] - m[1][1] * m[0][2]) * OneOverDet;
- Temp.m[1][2] = -(m[0][0] * m[1][2] - m[1][0] * m[0][2]) * OneOverDet;
- Temp.m[2][2] = +(m[0][0] * m[1][1] - m[1][0] * m[0][1]) * OneOverDet;
-
- *this = Temp;
-
- return *this;
- }
-
- Matrix3x3& Normalize();
-
- //! this = exp(a)
- Matrix3x3& Exp(const Matrix3x3& a);
-
-void FromQuat(const Quat &q);
-void FromQuatL2(const Quat &q, float l2);
-
- // Arithmetic operators
- //! Operator for Matrix3x3 Plus = Matrix3x3 + Matrix3x3;
- inline_ Matrix3x3 operator+(const Matrix3x3& mat) const
- {
- return Matrix3x3(
- m[0][0] + mat.m[0][0], m[0][1] + mat.m[0][1], m[0][2] + mat.m[0][2],
- m[1][0] + mat.m[1][0], m[1][1] + mat.m[1][1], m[1][2] + mat.m[1][2],
- m[2][0] + mat.m[2][0], m[2][1] + mat.m[2][1], m[2][2] + mat.m[2][2]);
- }
-
- //! Operator for Matrix3x3 Minus = Matrix3x3 - Matrix3x3;
- inline_ Matrix3x3 operator-(const Matrix3x3& mat) const
- {
- return Matrix3x3(
- m[0][0] - mat.m[0][0], m[0][1] - mat.m[0][1], m[0][2] - mat.m[0][2],
- m[1][0] - mat.m[1][0], m[1][1] - mat.m[1][1], m[1][2] - mat.m[1][2],
- m[2][0] - mat.m[2][0], m[2][1] - mat.m[2][1], m[2][2] - mat.m[2][2]);
- }
-
- //! Operator for Matrix3x3 Mul = Matrix3x3 * Matrix3x3;
- inline_ Matrix3x3 operator*(const Matrix3x3& mat) const
- {
- return Matrix3x3(
- m[0][0]*mat.m[0][0] + m[0][1]*mat.m[1][0] + m[0][2]*mat.m[2][0],
- m[0][0]*mat.m[0][1] + m[0][1]*mat.m[1][1] + m[0][2]*mat.m[2][1],
- m[0][0]*mat.m[0][2] + m[0][1]*mat.m[1][2] + m[0][2]*mat.m[2][2],
-
- m[1][0]*mat.m[0][0] + m[1][1]*mat.m[1][0] + m[1][2]*mat.m[2][0],
- m[1][0]*mat.m[0][1] + m[1][1]*mat.m[1][1] + m[1][2]*mat.m[2][1],
- m[1][0]*mat.m[0][2] + m[1][1]*mat.m[1][2] + m[1][2]*mat.m[2][2],
-
- m[2][0]*mat.m[0][0] + m[2][1]*mat.m[1][0] + m[2][2]*mat.m[2][0],
- m[2][0]*mat.m[0][1] + m[2][1]*mat.m[1][1] + m[2][2]*mat.m[2][1],
- m[2][0]*mat.m[0][2] + m[2][1]*mat.m[1][2] + m[2][2]*mat.m[2][2]);
- }
-
- //! Operator for Point Mul = Matrix3x3 * Point;
- inline_ IcePoint operator*(const IcePoint& v) const { return IcePoint(GetRow(0)|v, GetRow(1)|v, GetRow(2)|v); }
-
- //! Operator for Matrix3x3 Mul = Matrix3x3 * float;
- inline_ Matrix3x3 operator*(float s) const
- {
- return Matrix3x3(
- m[0][0]*s, m[0][1]*s, m[0][2]*s,
- m[1][0]*s, m[1][1]*s, m[1][2]*s,
- m[2][0]*s, m[2][1]*s, m[2][2]*s);
- }
-
- //! Operator for Matrix3x3 Mul = float * Matrix3x3;
- inline_ friend Matrix3x3 operator*(float s, const Matrix3x3& mat)
- {
- return Matrix3x3(
- s*mat.m[0][0], s*mat.m[0][1], s*mat.m[0][2],
- s*mat.m[1][0], s*mat.m[1][1], s*mat.m[1][2],
- s*mat.m[2][0], s*mat.m[2][1], s*mat.m[2][2]);
- }
-
- //! Operator for Matrix3x3 Div = Matrix3x3 / float;
- inline_ Matrix3x3 operator/(float s) const
- {
- if (s) s = 1.0f / s;
- return Matrix3x3(
- m[0][0]*s, m[0][1]*s, m[0][2]*s,
- m[1][0]*s, m[1][1]*s, m[1][2]*s,
- m[2][0]*s, m[2][1]*s, m[2][2]*s);
- }
-
- //! Operator for Matrix3x3 Div = float / Matrix3x3;
- inline_ friend Matrix3x3 operator/(float s, const Matrix3x3& mat)
- {
- return Matrix3x3(
- s/mat.m[0][0], s/mat.m[0][1], s/mat.m[0][2],
- s/mat.m[1][0], s/mat.m[1][1], s/mat.m[1][2],
- s/mat.m[2][0], s/mat.m[2][1], s/mat.m[2][2]);
- }
-
- //! Operator for Matrix3x3 += Matrix3x3
- inline_ Matrix3x3& operator+=(const Matrix3x3& mat)
- {
- m[0][0] += mat.m[0][0]; m[0][1] += mat.m[0][1]; m[0][2] += mat.m[0][2];
- m[1][0] += mat.m[1][0]; m[1][1] += mat.m[1][1]; m[1][2] += mat.m[1][2];
- m[2][0] += mat.m[2][0]; m[2][1] += mat.m[2][1]; m[2][2] += mat.m[2][2];
- return *this;
- }
-
- //! Operator for Matrix3x3 -= Matrix3x3
- inline_ Matrix3x3& operator-=(const Matrix3x3& mat)
- {
- m[0][0] -= mat.m[0][0]; m[0][1] -= mat.m[0][1]; m[0][2] -= mat.m[0][2];
- m[1][0] -= mat.m[1][0]; m[1][1] -= mat.m[1][1]; m[1][2] -= mat.m[1][2];
- m[2][0] -= mat.m[2][0]; m[2][1] -= mat.m[2][1]; m[2][2] -= mat.m[2][2];
- return *this;
- }
-
- //! Operator for Matrix3x3 *= Matrix3x3
- inline_ Matrix3x3& operator*=(const Matrix3x3& mat)
- {
- IcePoint TempRow;
-
- GetRow(0, TempRow);
- m[0][0] = TempRow.x*mat.m[0][0] + TempRow.y*mat.m[1][0] + TempRow.z*mat.m[2][0];
- m[0][1] = TempRow.x*mat.m[0][1] + TempRow.y*mat.m[1][1] + TempRow.z*mat.m[2][1];
- m[0][2] = TempRow.x*mat.m[0][2] + TempRow.y*mat.m[1][2] + TempRow.z*mat.m[2][2];
-
- GetRow(1, TempRow);
- m[1][0] = TempRow.x*mat.m[0][0] + TempRow.y*mat.m[1][0] + TempRow.z*mat.m[2][0];
- m[1][1] = TempRow.x*mat.m[0][1] + TempRow.y*mat.m[1][1] + TempRow.z*mat.m[2][1];
- m[1][2] = TempRow.x*mat.m[0][2] + TempRow.y*mat.m[1][2] + TempRow.z*mat.m[2][2];
-
- GetRow(2, TempRow);
- m[2][0] = TempRow.x*mat.m[0][0] + TempRow.y*mat.m[1][0] + TempRow.z*mat.m[2][0];
- m[2][1] = TempRow.x*mat.m[0][1] + TempRow.y*mat.m[1][1] + TempRow.z*mat.m[2][1];
- m[2][2] = TempRow.x*mat.m[0][2] + TempRow.y*mat.m[1][2] + TempRow.z*mat.m[2][2];
- return *this;
- }
-
- //! Operator for Matrix3x3 *= float
- inline_ Matrix3x3& operator*=(float s)
- {
- m[0][0] *= s; m[0][1] *= s; m[0][2] *= s;
- m[1][0] *= s; m[1][1] *= s; m[1][2] *= s;
- m[2][0] *= s; m[2][1] *= s; m[2][2] *= s;
- return *this;
- }
-
- //! Operator for Matrix3x3 /= float
- inline_ Matrix3x3& operator/=(float s)
- {
- if (s) s = 1.0f / s;
- m[0][0] *= s; m[0][1] *= s; m[0][2] *= s;
- m[1][0] *= s; m[1][1] *= s; m[1][2] *= s;
- m[2][0] *= s; m[2][1] *= s; m[2][2] *= s;
- return *this;
- }
-
- // Cast operators
- //! Cast a Matrix3x3 to a Matrix4x4.
- operator Matrix4x4() const;
- //! Cast a Matrix3x3 to a Quat.
- operator Quat() const;
-
- inline_ const IcePoint& operator[](int row) const { return *(const IcePoint*)&m[row][0]; }
- inline_ IcePoint& operator[](int row) { return *(IcePoint*)&m[row][0]; }
-
- public:
-
- float m[3][3];
- };
-
-#endif // __ICEMATRIX3X3_H__
-
generated by cgit v1.1 at 2024-05-18 18:45:16 +0000