simplexD2linked Class Reference

#include <simplexD2linked.h>

Collaboration diagram for simplexD2linked:

List of all members.

Public Member Functions
uintc	nifrom (uintc gpt) const
	Use global points as references to get the opposite neighbor.
uintc	piInverse (uintc gpt) const
	Get the local point index.
boolc	piInverseHas (uintc gpt) const
	Given the point does it belong to this simplex?
uintc	piInverse (bool &res, uintc gpt) const
	Both find the point inverse and query if it exists.
uintc	niInverse (uintc neib) const
	Get the local neighbour index.
boolc	niInverseHas (uintc neib) const
	Has the simplex got a pointer to neib?
uintc	niInverse (bool &res, uintc neib) const
	Both find the inverse and query if it exists.
	simplexD2linked ()
	Default Constructor: all fields set to 0.
	simplexD2linked (uintc a, uintc b, uintc c, uintc na=0, uintc nb=0, uintc nc=0)
	Construct a triangle.
void	construct (uintc a, uintc b, uintc c, uintc na, uintc nb, uintc nc)
	Construct this triangle.
void	getanticlockwiseface (uint &a, uint &b, uintc face) const
	Returns anticlockwise point indexes a,b are indexes from <0,1,2> eg face 1 identifies the face opposite the point 1 which is line form 2 to 0.
void	getclockwiseface (uint &a, uint &b, uintc face) const
	Returns clockwise point indexes a,b are indexes from <0,1,2>.
boolc	isonboundary () const
	Is the triangle part of the surface?
void	setnull ()
	Set all fields to 0.
boolc	isnull () const
	Is this a triangle? Are all the fields set to zero?
void	changelink (uintc from, uintc to)
	Change the link to point to another simplex.
boolc	operator== (simplexD2linked const &w) const
	Do two triangles have the same points? Assumes simplex has unique points, so (1,1,2) is not compared with (2,2,1).
	operator string () const
	Write the object out.
void	serializeInverse (stringc &s)
	Read the object in.
ostream &	print (ostream &os) const
	Write the object out.
istream &	serializeInverse (istream &is)
	Read the object in.
Public Attributes
uint	pi [3]
	Indexes to points or verticies.
uint	ni [3]
	Indexes to neighboring simplexes.

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Detailed Description

Definition at line 29 of file simplexD2linked.h.

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Constructor & Destructor Documentation

simplexD2linked::simplexD2linked

(

)

Default Constructor: all fields set to 0.

Definition at line 34 of file simplexD2linked.cpp.

References ni, and pi.

{
  for (uint i=0; i<3; ++i)
  {
    pi[i] = 0;
    ni[i] = 0;
  }
}

simplexD2linked::simplexD2linked	(	uintc	a,
		uintc	b,
		uintc	c,
		uintc	na = 0,
		uintc	nb = 0,
		uintc	nc = 0
	)

Construct a triangle.

Definition at line 44 of file simplexD2linked.cpp.

{ 
  construct(a,b,c,na,nb,nc); 
}

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Member Function Documentation

void simplexD2linked::changelink	(	uintc	from,
		uintc	to
	)			[inline]

Change the link to point to another simplex.

Definition at line 153 of file simplexD2linked.h.

References ni, and niInverse().

Referenced by d3tess::simplexswap().

    { ni[ niInverse(from) ] = to; }

void simplexD2linked::construct	(	uintc	a,
		uintc	b,
		uintc	c,
		uintc	na,
		uintc	nb,
		uintc	nc
	)

Construct this triangle.

Definition at line 158 of file simplexD2linked.cpp.

{
  pi[0] = a;
  pi[1] = b;
  pi[2] = c;
  ni[0] = na;
  ni[1] = nb;
  ni[2] = nc;
};

void simplexD2linked::getanticlockwiseface	(	uint &	a,
		uint &	b,
		uintc	face
	)			const

Returns anticlockwise point indexes a,b are indexes from <0,1,2> eg face 1 identifies the face opposite the point 1 which is line form 2 to 0.

Definition at line 177 of file simplexD2linked.cpp.

{
  switch (face)
  {
    case 0:
      a=1; b=2; 
      break;

    case 1:
      a=2; b=0;
      break;

    case 2:
      a=0; b=1;
      break;

    default:
      assert(false);
  }
}

void simplexD2linked::getclockwiseface	(	uint &	a,
		uint &	b,
		uintc	face
	)			const

Returns clockwise point indexes a,b are indexes from <0,1,2>.

Definition at line 203 of file simplexD2linked.cpp.

{
  switch (face)
  {
    case 0:
      a=2; b=1; 
      break;

    case 1:
      a=0; b=2; 
      break;

    case 2:
      a=1; b=0; 
      break;

    default:
      assert(false);
  }
}

boolc simplexD2linked::isnull

(

)

const

Is this a triangle? Are all the fields set to zero?

Definition at line 228 of file simplexD2linked.cpp.

References ni, and pi.

Referenced by writemulticolorobj::draw(), writegridobj::draw(), writewindingobj::draw(), writesurfaceobj::draw(), d3meshiterrecursive< B >::eval(), and d3tess::simplexdelete().

{
  for (uint i=0; i<3; ++i)
  {
    if (pi[i]!=0)
      return false;

    if (ni[i]!=0)
      return false;
  }

  return true;
}

boolc simplexD2linked::isonboundary

(

)

const

Is the triangle part of the surface?

Definition at line 78 of file simplexD2linked.cpp.

References ni.

{
  if (ni[0]==0) return true;
  if (ni[1]==0) return true;
  if (ni[2]==0) return true;
  
  return false;
}

uintc simplexD2linked::nifrom

(

uintc

gpt

)

const [inline]

Use global points as references to get the opposite neighbor.

Definition at line 41 of file simplexD2linked.h.

References ni, and piInverse().

    { return ni[piInverse(gpt)]; }

uintc simplexD2linked::niInverse	(	bool &	res,
		uintc	neib
	)			const [inline]

Both find the inverse and query if it exists.

Definition at line 98 of file simplexD2linked.h.

References ni.

  {
    res=true;
    if (ni[0]==neib) return 0;
    if (ni[1]==neib) return 1;
    if (ni[2]==neib) return 2;

    res=false;
    return 3; // Return crap.
  }  

uintc simplexD2linked::niInverse

(

uintc

neib

)

const [inline]

Get the local neighbour index.

Definition at line 79 of file simplexD2linked.h.

References ni.

Referenced by changelink(), d3mincircle::eval(), d3mincentroid2::eval(), d3mincentroid::eval(), d3minboundary::eval(), d3tess::flip(), d3tess::isconvex(), d3tess::movedown(), d3tess::simplexswap(), and d3tess::split1D().

  {  
    if (ni[0]==neib) return 0;
    if (ni[1]==neib) return 1;
    if (ni[2]==neib) return 2;

    assert(false);
    return 3; // Return crap.
  }  

boolc simplexD2linked::niInverseHas

(

uintc

neib

)

const [inline]

Has the simplex got a pointer to neib?

Definition at line 89 of file simplexD2linked.h.

References ni.

Referenced by d3tess::simplexswap().

  {  
    if (ni[0]==neib) return true;
    if (ni[1]==neib) return true;
    if (ni[2]==neib) return true;

    return false; 
  }  

simplexD2linked::operator string

(

)

const

Write the object out.

Definition at line 14 of file simplexD2linked.cpp.

References ni, and pi.

{
  string s;
  for (uint i=0; i<3; ++i)
  {
    { stringstream ss; ss << pi[i]; s+=ss.str(); }
    s += " ";
  }

  s += "  ";

  for (uint i=0; i<3; ++i)
  {
    { stringstream ss; ss << ni[i]; s+=ss.str(); }
    s += " ";
  }

  return s;
}

boolc simplexD2linked::operator==

(

simplexD2linked const &

w

)

const

Do two triangles have the same points? Assumes simplex has unique points, so (1,1,2) is not compared with (2,2,1).

Definition at line 251 of file simplexD2linked.cpp.

References pi.

{
  if (pi[0]+pi[1]+pi[2] != w.pi[0]+w.pi[1]+w.pi[2])
    return false;

  for (uint i=0; i<3; ++i)
  {
    bool res(false);
    for (uint k=0; k<3; ++k)
    {
      if (w.pi[k]==pi[i])
      {
        res=true;
        k=3;
      }
    }
    if (res==false)
      return false;
  }

  return true;
}

uintc simplexD2linked::piInverse	(	bool &	res,
		uintc	gpt
	)			const [inline]

Both find the point inverse and query if it exists.

Definition at line 67 of file simplexD2linked.h.

References pi.

  {
    res=true;
    if (pi[0]==gpt) return 0;
    if (pi[1]==gpt) return 1;
    if (pi[2]==gpt) return 2;

    res=false;
    return 3; // Return crap.
  }

uintc simplexD2linked::piInverse

(

uintc

gpt

)

const [inline]

Get the local point index.

Definition at line 45 of file simplexD2linked.h.

References pi.

Referenced by d3tess::flip(), and nifrom().

  {
    assert(gpt!=0);

    if (pi[0]==gpt) return 0;
    if (pi[1]==gpt) return 1;
    if (pi[2]==gpt) return 2;

    assert(false);
    return 3; // Return crap.
  }

boolc simplexD2linked::piInverseHas

(

uintc

gpt

)

const [inline]

Given the point does it belong to this simplex?

Definition at line 57 of file simplexD2linked.h.

References pi.

Referenced by d3tess::splitwithline().

  {
    if (pi[0]==gpt) return true;
    if (pi[1]==gpt) return true;
    if (pi[2]==gpt) return true;

    return false;
  }

ostream & simplexD2linked::print

(

ostream &

os

)

const

Write the object out.

Definition at line 143 of file simplexD2linked.cpp.

References ni, and pi.

Referenced by operator<<().

{
  for (uint i=0; i<3; ++i)
    os << pi[i] << " ";

  os << "  ";

  for (uint i=0; i<3; ++i)
    os << ni[i] << " ";

  return os;
}

istream & simplexD2linked::serializeInverse

(

istream &

is

)

Read the object in.

Definition at line 130 of file simplexD2linked.cpp.

References ni, and pi.

{
  for (uint i=0; i<3; ++i)
    is >> pi[i];

  for (uint i=0; i<3; ++i)
    is >> ni[i];
  
  return is;
}

void simplexD2linked::serializeInverse

(

stringc &

s

)

Read the object in.

Definition at line 120 of file simplexD2linked.cpp.

References ni, and pi.

Referenced by operator>>().

{  
  stringstream ss(s); 
  for (uint i=0; i<3; ++i)
    ss >> pi[i];

  for (uint i=0; i<3; ++i)
    ss >> ni[i];
}

void simplexD2linked::setnull

(

)

Set all fields to 0.

Definition at line 242 of file simplexD2linked.cpp.

References ni, and pi.

Referenced by d3tess::simplexdelete().

{
  for (uint i=0; i<3; ++i)
  {
    pi[i]=0;
    ni[i]=0;
  }
}

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Member Data Documentation

uint simplexD2linked::ni[3]

Indexes to neighboring simplexes.

If ni[k] is 0 this is a boundary/surface edge.

Definition at line 37 of file simplexD2linked.h.

Referenced by d3tess::boundaryorient(), changelink(), d3meshiterrecursive< B >::eval(), d3tess::flip(), isnull(), isonboundary(), d3tess::move_terminated(), d3tess::movedown(), nifrom(), niInverse(), niInverseHas(), operator string(), print(), serializeInverse(), setnull(), simplexD2linked(), d3tess::simplexdelete(), d3tess::simplexswap(), d3tess::split1D(), and d3tess::split2D().

uint simplexD2linked::pi[3]

Indexes to points or verticies.

Definition at line 34 of file simplexD2linked.h.

Referenced by d3tess::cpbasemeasure(), writemulticolorobj::draw(), writecpobj::draw(), writesimplicesobj::draw(), writegridobj::draw(), writewindingobj::draw(), writesurfaceobj::draw(), maxEdgeLength::eval(), d3mincircle::eval(), d3mincentroid2::eval(), d3mincentroid::eval(), d3minboundary::eval(), d3tess::flip(), d3tess::isconvex(), isnull(), d3tess::move_terminated(), operator string(), operator==(), piInverse(), piInverseHas(), print(), serializeInverse(), setnull(), simplexD2linked(), d3tess::simplexswap(), d3tess::split1D(), d3tess::split2D(), and d3tess::surfaceviewable().

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

• compgeomlib/simplexD2linked.h
• compgeomlib/simplexD2linked.cpp