Matrix4Symmetry Class Reference

#include <Matrix4Symmetry.h>

Public Member Functions
	Matrix4Symmetry ()
	Matrix4Symmetry (const BigReal *)
	Matrix4Symmetry (BigReal [])
void	multpoint (BigReal point[3]) const
void	identity ()
void	transpose ()
void	multmatrix (const Matrix4Symmetry &)
	premultiply the matrix by the given matrix, this->other * this More...
void	translate (BigReal x, BigReal y, BigReal z)
void	translate (BigReal d[3])

Public Attributes
BigReal	mat [16]

Detailed Description

Definition at line 5 of file Matrix4Symmetry.h.

Constructor & Destructor Documentation

Matrix4Symmetry() [1/3]

Matrix4Symmetry::Matrix4Symmetry

(

)

Definition at line 3 of file Matrix4Symmetry.C.

References identity().

{ identity(); }

Matrix4Symmetry() [2/3]

Matrix4Symmetry::Matrix4Symmetry

(

const BigReal *

m

)

Definition at line 4 of file Matrix4Symmetry.C.

References mat.

{ memcpy(mat, m, 16*sizeof(BigReal)); }

Matrix4Symmetry() [3/3]

Matrix4Symmetry::Matrix4Symmetry

(

BigReal

arr[]

)

Definition at line 5 of file Matrix4Symmetry.C.

References mat.

                                              {
    for(int i = 0; i < 16; i++){mat[i] = arr[i];}
  }

Member Function Documentation

identity()

void Matrix4Symmetry::identity

(

void

)

Definition at line 20 of file Matrix4Symmetry.C.

References mat.

Referenced by Matrix4Symmetry().

                               {
    memset(mat, 0, 16*sizeof(BigReal));
    mat[0]=1.0f;
    mat[5]=1.0f;
    mat[10]=1.0f;
    mat[15]=1.0f;
  }

multmatrix()

void Matrix4Symmetry::multmatrix

(

const Matrix4Symmetry &

m

)

premultiply the matrix by the given matrix, this->other * this

Definition at line 38 of file Matrix4Symmetry.C.

References mat.

Referenced by translate().

                                                         {
    BigReal tmp[4];
    for (int j=0; j<4; j++) {
      tmp[0] = mat[j];
      tmp[1] = mat[4+j];
      tmp[2] = mat[8+j]; 
      tmp[3] = mat[12+j];
      for (int i=0; i<4; i++) {
        mat[4*i+j] = m.mat[4*i]*tmp[0] + m.mat[4*i+1]*tmp[1] +
          m.mat[4*i+2]*tmp[2] + m.mat[4*i+3]*tmp[3]; 
      }
    } 
  }

multpoint()

void Matrix4Symmetry::multpoint

(

BigReal

point[3]

)

const

Definition at line 8 of file Matrix4Symmetry.C.

References mat.

                                                      {
    BigReal tmp[3];
    BigReal itmp3 = 1.0f / (point[0]*mat[3] + point[1]*mat[7] +
                            point[2]*mat[11] + mat[15]);
    tmp[0] = itmp3*point[0];
    tmp[1] = itmp3*point[1];
    tmp[2] = itmp3*point[2];
    point[0]=tmp[0]*mat[0] + tmp[1]*mat[4] + tmp[2]*mat[ 8] + itmp3*mat[12];
    point[1]=tmp[0]*mat[1] + tmp[1]*mat[5] + tmp[2]*mat[ 9] + itmp3*mat[13];
    point[2]=tmp[0]*mat[2] + tmp[1]*mat[6] + tmp[2]*mat[10] + itmp3*mat[14];
  }

translate() [1/2]

void Matrix4Symmetry::translate	(	BigReal	x,
		BigReal	y,
		BigReal	z
	)

Definition at line 51 of file Matrix4Symmetry.C.

References mat, and multmatrix().

Referenced by translate().

                                                               {
    Matrix4Symmetry m;          
    m.mat[12] = x;
    m.mat[13] = y;
    m.mat[14] = z;
    multmatrix(m);
  }

translate() [2/2]

void Matrix4Symmetry::translate

(

BigReal

d[3]

)

Definition at line 58 of file Matrix4Symmetry.C.

References translate().

{ translate(d[0], d[1], d[2]); }

transpose()

void Matrix4Symmetry::transpose

(

void

)

Definition at line 27 of file Matrix4Symmetry.C.

References mat.

                                {
    BigReal tmp[16];
    int i,j;
    for(i=0;i<4;i++) {
      for(j=0;j<4;j++) {
        tmp[4*i+j] = mat[i+4*j];
      }
    }
    for(i=0;i<16;i++) mat[i] = tmp[i];
  }

Member Data Documentation

mat

BigReal Matrix4Symmetry::mat[16]

Definition at line 7 of file Matrix4Symmetry.h.

Referenced by identity(), Matrix4Symmetry(), multmatrix(), multpoint(), translate(), and transpose().

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The documentation for this class was generated from the following files:

• Matrix4Symmetry.h
• Matrix4Symmetry.C