visconvex Class Reference

Draws random points in convex hull. More...

#include <visconvex.h>

Inheritance diagram for visconvex:

Collaboration diagram for visconvex:

List of all members.

Public Member Functions
	visconvex ()
	Default settings.
void	handlecommand (bool &matches, viscmd &c)
	Possibly run the command.
stringc	id () const
	Command name.
Public Attributes
pt3	color
	Default line color.
bool	colorrandom
	Each time convex is called color the area/volume randomly.
uint	N
	Number of random points.

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Detailed Description

Draws random points in convex hull.

Definition at line 10 of file visconvex.h.

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Constructor & Destructor Documentation

visconvex::visconvex

(

)

Default settings.

Definition at line 10 of file visconvex.cpp.

References color, colorrandom, and N.

{
  N=200;
  colorrandom=true;
  color = pt3(0.0,0.0,1.0);
}

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Member Function Documentation

void visconvex::handlecommand	(	bool &	matches,
		viscmd &	c
	)			[virtual]

Possibly run the command.

Implements visoperator.

Definition at line 17 of file visconvex.cpp.

References viscmd::arg, color, colorrandom, viscmd::command, gobjpush, commandline::mapvar(), N, visenv::pi, r, vectorstring::serializeInverse(), viscmd::valid, and visoperator::ve.

{
  assert(ve!=0);
  matches=false;
  if (c.command != this->id())
    return;
  matches=true;

  commandline cmd(c.arg);
//cout << SHOW(c.arg) << endl;

//cout << "*" << this->id() << "*" << endl;

  string points;
  cmd.mapvar(points,"points");
  cmd.mapvar(N,"N");
//cout << SHOW(points) << endl;

//cout << SHOW(N) << endl;

  vector<uint> vk;
  vectorstring::serializeInverse(vk,points);
assert(vk.size()!=0);

  uint sz = vk.size();
  vector< pt3 > & pi(ve->pi);

//for (uint i=0; i<vk.size(); ++i)
//  cout << SHOW(vk[i]) << endl;

  // Check array bounds.
  for (uint k=0; k<sz; ++k)
  {
    if (vk[k]>=pi.size())
      return;
  }

  // Create the vector of random convex points.
  random11<> r;
  vector<pt3> v2;
  for (uint i=0; i<N; ++i)
  {
    pt3 p;
    double r1=0.0;
    double rs=0.0;
    for (uint k=0; k<sz; ++k)
    {
      r1=r();
//cout << SHOW(r1) << endl;
      rs += r1;
      p += (pi[ vk[k] ]*r1);
//cout << SHOW(p) << endl;
    }
    assert(rs!=0.0);
    p /= rs;
    v2.push_back(p);
  }

//cout << SHOW(v2.size()) << endl;
//for (uint i=0; i<v2.size(); ++i)
//cout << SHOW(v2[i]) << endl;

  gobjpush( new gobjglPushAttrib(GL_LIGHTING) ); 
  gobjpush( new gobjglPushAttrib(GL_CURRENT_BIT) );
//cout << SHOW(colorrandom) << endl;
// Compiler on Eee PC Ubuto doing strange things here.
//   Possibly because I used inline functions in one-line 
//   if then statements.
  if (colorrandom)
  {
    pt3 col(r(),r(),r());
//    cout << SHOW(col) << endl;
    gobjpush( new gobjglColor3d(col)); 
  }
  else
  {
    gobjpush( new gobjglColor3d(color) );
  }
  gobjpush( new gobjglDisable( GL_LIGHTING));

  gobjpush(new gobjglBegin(GL_POINTS));
  for (uint i=0; i<v2.size(); ++i)
    { gobjpush(new gobjglVertex3d(v2[i])); }
  gobjpush(new gobjglEnd());

  gobjpush( new gobjglPopAttrib() );
  gobjpush( new gobjglPopAttrib() );
 
  c.valid=true; 
}

stringc visconvex::id

(

)

const [inline, virtual]

Command name.

Implements visoperator.

Definition at line 31 of file visconvex.h.

    { return string("convex"); }

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Member Data Documentation

pt3 visconvex::color

Default line color.

Definition at line 15 of file visconvex.h.

Referenced by handlecommand(), and visconvex().

bool visconvex::colorrandom

Each time convex is called color the area/volume randomly.

Definition at line 19 of file visconvex.h.

Referenced by handlecommand(), and visconvex().

uint visconvex::N

Number of random points.

Definition at line 22 of file visconvex.h.

Referenced by handlecommand(), and visconvex().

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

• vistool/visconvex.h
• vistool/visconvex.cpp