crossproduct Class Reference

In 3D given two vectors that make a plane find a third vector at right angles to this plane. More...

#include <mathlib.h>

List of all members.

Static Public Member Functions
template<class T >
static void	eval (T &w, T const &a, T const &b)
	On the right hand a is the thumb, b is the first finger, w points outwards of palm.
template<class T >
static void	evalxyz (T &w, T const &a, T const &b)
	On the right hand a is the thumb, b is the first finger, w points outwards of palm.

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Detailed Description

In 3D given two vectors that make a plane find a third vector at right angles to this plane.

Definition at line 76 of file mathlib.h.

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Member Function Documentation

template<class T >

static void crossproduct::eval	(	T &	w,
		T const &	a,
		T const &	b
	)			[inline, static]

On the right hand a is the thumb, b is the first finger, w points outwards of palm.

Definition at line 83 of file mathlib.h.

Referenced by surfaceplane< T >::operator()(), test03(), tetrahedronvolume(), tetrahedron< PT, PD >::triangleverticiespoint(), and tetrahedron< PT, PD >::verticiespoint().

  {
    w[0] = a[1]*b[2]-b[1]*a[2];
    w[1] = a[2]*b[0]-a[0]*b[2];
    w[2] = a[0]*b[1]-a[1]*b[0];
  }

template<class T >

static void crossproduct::evalxyz	(	T &	w,
		T const &	a,
		T const &	b
	)			[inline, static]

On the right hand a is the thumb, b is the first finger, w points outwards of palm.

Definition at line 93 of file mathlib.h.

Referenced by myRotate::draw(), gobjMyCircleDraw::draw(), triangle3D< PT, PD >::equilaterali(), plane::intersects(), disk::intersects(), triangle3D< typename TET::PTtype, typename TET::PDtype >::normal(), triangle3D< PT, PD >::normali(), triangle3D< PT, PD >::orthocenteri(), plane::plane(), and tetrahedron< PT, PD >::valid().

  {
    w.x = a.y*b.z-b.y*a.z;
    w.y = a.z*b.x-a.x*b.z;
    w.z = a.x*b.y-a.y*b.x;
  }

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

• mathlib/mathlib.h