tetrahedronpartition< T, D > Class Template Reference

Test if a point is within a tetrahedron. More...

#include <tetrahedronpartition.h>

Inheritance diagram for tetrahedronpartition< T, D >:

Collaboration diagram for tetrahedronpartition< T, D >:

List of all members.

Public Member Functions
	tetrahedronpartition (T const &p0_, T const &p1_, T const &p2_, T const &p3_)
	The first three points form a anticlockwise triangle facing inwards.
	tetrahedronpartition ()
	Unconstructed partition.
void	construct (T const &p0_, T const &p1_, T const &p2_, T const &p3_)
	The first three points form a anticlockwise triangle facing inwards.
boolc	isInside (T const &x) const
	Is the point inside the tetrahedron?
Public Attributes
T	pi [4]
	The four points of the tetrahedron.
halfspaceD3< T, D >	hi [4]
	The halfspaces are opposite the vertex with the same index, and point inwards.

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Detailed Description

template<typename T, typename D>
class tetrahedronpartition< T, D >

Test if a point is within a tetrahedron.

Definition at line 12 of file tetrahedronpartition.h.

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Constructor & Destructor Documentation

template<typename T , typename D >

tetrahedronpartition< T, D >::tetrahedronpartition	(	T const &	p0_,
		T const &	p1_,
		T const &	p2_,
		T const &	p3_
	)			[inline]

The first three points form a anticlockwise triangle facing inwards.

ie its half space sees the fourth point.

Definition at line 56 of file tetrahedronpartition.h.

{
  construct(p0_,p1_,p2_,p3_);
}

template<typename T, typename D>

tetrahedronpartition< T, D >::tetrahedronpartition

(

)

[inline]

Unconstructed partition.

Definition at line 33 of file tetrahedronpartition.h.

{}

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Member Function Documentation

template<typename T , typename D >

void tetrahedronpartition< T, D >::construct	(	T const &	p0_,
		T const &	p1_,
		T const &	p2_,
		T const &	p3_
	)			[inline]

The first three points form a anticlockwise triangle facing inwards.

ie its half space sees the fourth point.

Definition at line 69 of file tetrahedronpartition.h.

{
  pi[0] = p0_;
  pi[1] = p1_;
  pi[2] = p2_;
  pi[3] = p3_;

  hi[3] = halfspaceD3<T,D>(p0_,p1_,p2_);
  assert( hi[3].isInside(pi[3])==true );
  hi[1] = halfspaceD3<T,D>(p0_,p2_,p3_);
  assert( hi[1].isInside(pi[1])==true );
  hi[2] = halfspaceD3<T,D>(p3_,p1_,p0_);
  assert( hi[2].isInside(pi[2])==true );
  hi[0] = halfspaceD3<T,D>(p2_,p1_,p3_);
  assert( hi[0].isInside(pi[0])==true );
}

template<typename T , typename D >

boolc tetrahedronpartition< T, D >::isInside

(

T const &

x

)

const [inline, virtual]

Is the point inside the tetrahedron?

Implements partitionspace< T >.

Definition at line 92 of file tetrahedronpartition.h.

References tetrahedronpartition< T, D >::hi.

Referenced by d4tess::move_terminated(), and partitionstest::test06().

{
  for (uint i=0; i<4; ++i)
    if (!hi[i].isInside(x))
      return false;

  return true;
}

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Member Data Documentation

template<typename T, typename D>

halfspaceD3<T,D> tetrahedronpartition< T, D >::hi[4]

The halfspaces are opposite the vertex with the same index, and point inwards.

Definition at line 21 of file tetrahedronpartition.h.

Referenced by d4tess::isconvex(), tetrahedronpartition< T, D >::isInside(), and d4tess::move_terminated().

template<typename T, typename D>

T tetrahedronpartition< T, D >::pi[4]

The four points of the tetrahedron.

Definition at line 17 of file tetrahedronpartition.h.

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

• tri/tetrahedronpartition.h