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Change output of inverse function to pass by reference

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Whitespaces inside inverse function
This commit is contained in:
Michael Kirsch 2019-02-24 15:00:45 +01:00 committed by Joseph Lenox
parent a2e8aca4c4
commit 9158eb0a33
2 changed files with 15 additions and 25 deletions
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38
xs/src/libslic3r/TransformationMatrix.cpp
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@ -1,10 +1,3 @@
//#define Testumgebung
//#include <iostream>
//enum Axis { X = 0, Y, Z };
//
//void CONFESS(std::string content) {};
//
//
#include "TransformationMatrix.hpp"
#include <cmath>
#include <math.h>
@ -84,34 +77,31 @@ double TransformationMatrix::determinante() const
return m11*(m22*m33 - m23*m32) - m12*(m21*m33 - m23*m31) + m13*(m21*m32 - m31*m22);
}
bool TransformationMatrix::inverse(TransformationMatrix* inverse) const
bool TransformationMatrix::inverse(TransformationMatrix &inverse) const
{
// from http://mathworld.wolfram.com/MatrixInverse.html
// and https://math.stackexchange.com/questions/152462/inverse-of-transformation-matrix
TransformationMatrix mat;
double det = this->determinante();
if (abs(det) < 1e-9)
{
inverse = &mat;
return false;
}
double fac = 1.0 / det;
mat.m11 = fac*(this->m22*this->m33 - this->m23*this->m32);
mat.m12 = fac*(this->m13*this->m32 - this->m12*this->m33);
mat.m13 = fac*(this->m12*this->m23 - this->m13*this->m22);
mat.m21 = fac*(this->m23*this->m31 - this->m21*this->m33);
mat.m22 = fac*(this->m11*this->m33 - this->m13*this->m31);
mat.m23 = fac*(this->m13*this->m21 - this->m11*this->m23);
mat.m31 = fac*(this->m21*this->m32 - this->m22*this->m31);
mat.m32 = fac*(this->m12*this->m31 - this->m11*this->m32);
mat.m33 = fac*(this->m11*this->m22 - this->m12*this->m21);
inverse.m11 = fac * (this->m22 * this->m33 - this->m23 * this->m32);
inverse.m12 = fac * (this->m13 * this->m32 - this->m12 * this->m33);
inverse.m13 = fac * (this->m12 * this->m23 - this->m13 * this->m22);
inverse.m21 = fac * (this->m23 * this->m31 - this->m21 * this->m33);
inverse.m22 = fac * (this->m11 * this->m33 - this->m13 * this->m31);
inverse.m23 = fac * (this->m13 * this->m21 - this->m11 * this->m23);
inverse.m31 = fac * (this->m21 * this->m32 - this->m22 * this->m31);
inverse.m32 = fac * (this->m12 * this->m31 - this->m11 * this->m32);
inverse.m33 = fac * (this->m11 * this->m22 - this->m12 * this->m21);
mat.m14 = -(mat.m11*this->m14 + mat.m12*this->m24 + mat.m13*this->m34);
mat.m24 = -(mat.m21*this->m14 + mat.m22*this->m24 + mat.m23*this->m34);
mat.m34 = -(mat.m31*this->m14 + mat.m32*this->m24 + mat.m33*this->m34);
inverse.m14 = -(inverse.m11 * this->m14 + inverse.m12 * this->m24 + inverse.m13 * this->m34);
inverse.m24 = -(inverse.m21 * this->m14 + inverse.m22 * this->m24 + inverse.m23 * this->m34);
inverse.m34 = -(inverse.m31 * this->m14 + inverse.m32 * this->m24 + inverse.m33 * this->m34);
inverse = &mat;
return true;
}
@ -367,7 +357,7 @@ TransformationMatrix TransformationMatrix::mat_mirror(const Axis &axis)
TransformationMatrix TransformationMatrix::mat_mirror(const Pointf3 &normal)
{
// Kovács, E. Rotation about arbitrary axis and reflection through an arbitrary plane, Annales Mathematicae
// Kov<EFBFBD>cs, E. Rotation about arbitrary axis and reflection through an arbitrary plane, Annales Mathematicae
// et Informaticae, Vol 40 (2012) pp 175-186
// http://ami.ektf.hu/uploads/papers/finalpdf/AMI_40_from175to186.pdf
double factor, c1, c2, c3;

2
xs/src/libslic3r/TransformationMatrix.hpp
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@ -33,7 +33,7 @@ public:
double determinante() const;
/// Returns the inverse of the matrix
bool inverse(TransformationMatrix * inverse) const;
bool inverse(TransformationMatrix &inverse) const;
/// Perform Translation
void translate(double x, double y, double z);