arcdraw Class Reference

Arc drawer. More...

#include <arcdraw.h>

Inheritance diagram for arcdraw:

Collaboration diagram for arcdraw:

List of all members.

Public Member Functions
	arcdraw (arc const &ac_)
	The arc's display is enabled by default.
void	init (arc const &ac_)
	Associate this arc with this arc drawer.
void	draw ()
	Draw the arc.
void	update ()
	If the arcs parameters changed update() needs to be called before the arc is redrawn else the changes will not be displayed.
Public Attributes
bool	enableCenter
	Toggle the center display of the circle.
bool	enableEndPoints
	Toggle the endpoints.
bool	enableArc
	Toggle the arc.

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Detailed Description

Arc drawer.

This class uses an existing arc as a reference and displays it. If this arc is destroyed it is the clients responsibility to no longer use the associated arcdrawer (dangling pointer problem).

Definition at line 17 of file arcdraw.h.

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Constructor & Destructor Documentation

arcdraw::arcdraw

(

arc const &

ac_

)

The arc's display is enabled by default.

Definition at line 7 of file arcdraw.cpp.

References init().

{
  init(ac_);
}

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Member Function Documentation

void arcdraw::draw

(

)

[virtual]

Draw the arc.

Implements gobj.

Definition at line 118 of file arcdraw.cpp.

References gobjContainer::draw().

{
  graphicsdeffered.draw();
}

void arcdraw::init

(

arc const &

ac_

)

Associate this arc with this arc drawer.

Definition at line 12 of file arcdraw.cpp.

References enableArc, enableCenter, enableEndPoints, and update().

Referenced by arcdraw().

{
  ac = & ac_;
  enableCenter=true;
  enableEndPoints=true;
  enableArc=true;

  update();
}

void arcdraw::update

(

)

If the arcs parameters changed update() needs to be called before the arc is redrawn else the changes will not be displayed.

Definition at line 22 of file arcdraw.cpp.

References arc::center, enableArc, enableCenter, enableEndPoints, arc::isAntiClockwise(), arc::isStraightLine(), gobjContainer::nuke(), arc::p0, arc::p1, arc::phi0, arc::phi1, gobjContainer::push(), arc::radius, and gobjQuadric::radius.

Referenced by init().

{
  assert(ac!=0);

  gobjContainer & g(graphicsdeffered);
  g.nuke();

  if (ac->isStraightLine())
  {
    g.push( new gobjglColor3f(1.0,0.0,0.0) );
    g.push( new gobjglBegin(GL_LINE) );

    g.push( new gobjglVertex3f(ac->p0) );
    g.push( new gobjglVertex3f(ac->p1) );

    g.push( new gobjglEnd() );
    return;
  }

  gobjQuadric * q = new gobjQuadric();
  q->radius=.02;
  g.push(q);

  if (enableCenter)
  {
    g.push( new gobjglColor3f(0.0,1.0,0.0) );
    g.push( new gobjMySphereDraw(ac->center,q) );

    // Two lines from the center to the end points.
    static bool togglecolor=false;

    if (togglecolor)
      g.push( new gobjglColor3ub(34,139,34) );
    else
      g.push( new gobjglColor3ub(139,0,139) );
    togglecolor = !togglecolor;
      
    g.push( new gobjglEnable(GL_LINE_STIPPLE) );
    g.push( new gobjglLineStipple(1,0x0101) );
    g.push( new gobjglBegin(GL_LINE) );

    g.push( new gobjglVertex3f(ac->center) );
    g.push( new gobjglVertex3f(ac->p0) );
    g.push( new gobjglVertex3f(ac->center) );
    g.push( new gobjglVertex3f(ac->p1) );

    g.push( new gobjglEnd() );
    g.push( new gobjglDisable(GL_LINE_STIPPLE) );

  }

  if (enableArc)
  {
//    g.push( new gobjglPushAttrib(GL_CURRENT_BIT) );
//    g.push( new gobjglPushAttrib(GL_LIGHTING_BIT) );
    g.push( new gobjglDisable(GL_LIGHTING) );
    g.push( new gobjglColor3f(1.0,0.0,0.0) );

//cout << SHOW(ac) << endl;
//cout << SHOW(ac->center) << endl;
//cout << SHOW (ac->phi0()*180.0/PI) << endl;
//cout << SHOW (ac->phi1()*180.0/PI) << endl;
    double theta0 = ac->phi0;
    double theta1 = ac->phi1;
/*
    if (theta0>theta1)
    {
      double temp = theta0;
      theta0 = theta1;
      theta1 = temp;
    }
*/
//cout << SHOW (theta0*180.0/PI) << endl;
//cout << SHOW (theta1*180.0/PI) << endl;

    gobjMyCircle * c2;
    if (ac->isAntiClockwise())
      c2=new gobjMyCircle(theta0,theta1,abs(ac->radius));
    else
      c2=new gobjMyCircle(theta1,theta0,abs(ac->radius));

    g.push( new gobjMyCircleDraw(ac->center,*c2) );

//    g.push( new gobjglPopAttrib() );
//    g.push( new gobjglPopAttrib() );
  }

  if (enableEndPoints)
  {
//    g.push( new gobjglEnable(GL_LIGHTING) );
    g.push( new gobjglColor3f(0.0,0.0,1.0) );
    g.push( new gobjMySphereDraw(ac->p0,q) );
    g.push( new gobjMySphereDraw(ac->p1,q) );
  }
}

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Member Data Documentation

bool arcdraw::enableArc

Toggle the arc.

Definition at line 31 of file arcdraw.h.

Referenced by init(), and update().

bool arcdraw::enableCenter

Toggle the center display of the circle.

Definition at line 27 of file arcdraw.h.

Referenced by init(), and update().

bool arcdraw::enableEndPoints

Toggle the endpoints.

Definition at line 29 of file arcdraw.h.

Referenced by init(), and update().

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

• arcs/arcdraw.h
• arcs/arcdraw.cpp