trianglevisualize.h

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#ifndef TRIANGLEVISUALIZE_H
#define TRIANGLEVISUALIZE_H

#include <gobj.h>
#include <mathlib.h>
#include <triangle.h>

template< typename T >
class trianglevisualize
{
  gobjContainer & gX;
  triangle<T> const & tr;
public:

  bool mesh_on;
  bool midpoints_on;
  bool midpoint_center_on;
  bool altitude_to_point_on;
  bool altitude_on;
  bool innercircle_on;

  trianglevisualize
  (
    gobjContainer & _gX,
    triangle<T> const & _tr
  );

  void eval() const;

};


// -------------------------------------------------------- 
// Implementation


template< typename T >
trianglevisualize<T>::trianglevisualize
(
  gobjContainer & _gX,
  triangle<T> const & _tr
)
  : gX(_gX), tr(_tr), mesh_on(true), midpoints_on(false),
    midpoint_center_on(false), altitude_to_point_on(false),
    altitude_on(false), innercircle_on(false)
{
}


template< typename T >
void trianglevisualize<T>::eval() const 
{
  gX.push_back( new gobjglDisable(GL_LIGHTING) );

  if (mesh_on)
  {

  gX.push_back( new gobjglColor3ub(0,0,255) );

  gX.push_back( new gobjglBegin(GL_LINES) );

  gX.push_back( new gobjglVertex3f(tr.pi[0]) );
  gX.push_back( new gobjglVertex3f(tr.pi[1]) );
  gX.push_back( new gobjglVertex3f(tr.pi[0]) );
  gX.push_back( new gobjglVertex3f(tr.pi[2]) );
  gX.push_back( new gobjglVertex3f(tr.pi[1]) );
  gX.push_back( new gobjglVertex3f(tr.pi[2]) );

  gX.push_back( new gobjglEnd() );

  }

  gX.push_back( new gobjglColor3ub(255,0,255) );

  T m0 = tr.midpoint(0);
  T m1 = tr.midpoint(1);
  T m2 = tr.midpoint(2);

  gobjQuadric * gd = new gobjQuadric();
  gd->radius=.02;
  gX.push_back( gd );

  if (midpoints_on)
  {
  gX.push_back( new gobjglColor3ub(255,0,255) );
  gX.push_back( new gobjMySphereDraw(m0,gd) );
  gX.push_back( new gobjMySphereDraw(m1,gd) );
  gX.push_back( new gobjMySphereDraw(m2,gd) );
  }
  
  if (midpoint_center_on)
  {
  gX.push_back( new gobjglColor3ub(0,255,0) );
  gX.push_back( new gobjglBegin(GL_LINES) );
  gX.push_back( new gobjglVertex3f(tr.pi[0]) );
  gX.push_back( new gobjglVertex3f(m0) );
  gX.push_back( new gobjglVertex3f(tr.pi[1]) );
  gX.push_back( new gobjglVertex3f(m1) );
  gX.push_back( new gobjglVertex3f(tr.pi[2]) );
  gX.push_back( new gobjglVertex3f(m2) );
  gX.push_back( new gobjglEnd() );

  T mc = tr.centroid();
  gX.push_back( new gobjMySphereDraw(mc,gd) );
  }

  T vc = tr.orthocenter();

  if (altitude_to_point_on)
  {
  gX.push_back( new gobjglColor3ub(184,134,11) );
  T v0 = tr.orthocenteri(0);
  gX.push_back( new gobjMySphereDraw(v0,gd) );
  T v1 = tr.orthocenteri(1);
  gX.push_back( new gobjMySphereDraw(v1,gd) );
  T v2 = tr.orthocenteri(2);
  gX.push_back( new gobjMySphereDraw(v2,gd) );


  gX.push_back( new gobjglColor3ub(255,215,0) );
  gX.push_back( new gobjglBegin(GL_LINES) );
  gX.push_back( new gobjglVertex3f(tr.pi[0]) );
  gX.push_back( new gobjglVertex3f(v0) );
  gX.push_back( new gobjglVertex3f(tr.pi[1]) );
  gX.push_back( new gobjglVertex3f(v1) );
  gX.push_back( new gobjglVertex3f(tr.pi[2]) );
  gX.push_back( new gobjglVertex3f(v2) );
  gX.push_back( new gobjglEnd() );

  gX.push_back( new gobjMySphereDraw(vc,gd) );
  }
  
  T cc = tr.circumcenter();

  gobjMyCircle * gc = new gobjMyCircle();

  if(altitude_on)
  {
  gX.push_back( new gobjglColor3ub(255,0,0) );
  gX.push_back( new gobjMySphereDraw(cc,gd) );
  
  gX.push_back( new gobjglBegin(GL_LINES) );
  gX.push_back( new gobjglVertex3f(cc) );
  gX.push_back( new gobjglVertex3f(m0) );
  gX.push_back( new gobjglVertex3f(cc) );
  gX.push_back( new gobjglVertex3f(m1) );
  gX.push_back( new gobjglVertex3f(cc) );
  gX.push_back( new gobjglVertex3f(m2) );
  gX.push_back( new gobjglEnd() );

  
  gX.push_back( gc );
  point3<double> cc2(cc);
  point3<double> radius(cc2);
  radius.x -= tr.pi[0].x;
  radius.y -= tr.pi[0].y;
  gX.push_back( new gobjMyCircleDraw(sqrt(radius.dot()),cc2,*gc) );

  }

  gX.push_back( new gobjglBegin(GL_LINES) );
  gX.push_back( new gobjglVertex3f(cc) );
  gX.push_back( new gobjglColor3ub(255,215,0) );
  gX.push_back( new gobjglVertex3f(vc) );
  gX.push_back( new gobjglEnd() );

  if (innercircle_on)
  {
  T b0(tr.bisectangle(0));
  T b1 = tr.bisectangle(1);
  T b2 = tr.bisectangle(2);
  gX.push_back( new gobjglColor3ub(127,255,212) );
  gX.push_back( new gobjMySphereDraw(b0,gd) );
  gX.push_back( new gobjMySphereDraw(b1,gd) );
  gX.push_back( new gobjMySphereDraw(b2,gd) );


  T x;
  double r;
  tr.innercircle(x,r);
  gX.push_back( new gobjMySphereDraw(x,gd) );
  gX.push_back( new gobjMyCircleDraw(r,point3<double>(x),*gc) );

  gX.push_back( new gobjglBegin(GL_LINES) );
  gX.push_back( new gobjglVertex3f(tr.pi[0]) );
  gX.push_back( new gobjglVertex3f(b0) );
  gX.push_back( new gobjglVertex3f(tr.pi[1]) );
  gX.push_back( new gobjglVertex3f(b1) );
  gX.push_back( new gobjglVertex3f(tr.pi[2]) );
  gX.push_back( new gobjglVertex3f(b2) );
  gX.push_back( new gobjglEnd() );
  }

}


#endif