first working version
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/****************************************************************************
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* VCGLib o o *
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* Visual and Computer Graphics Library o o *
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* _ O _ *
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* Copyright(C) 2004 \/)\/ *
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* Visual Computing Lab /\/| *
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* ISTI - Italian National Research Council | *
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* \ *
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* All rights reserved. *
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
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* for more details. *
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* *
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****************************************************************************/
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/****************************************************************************
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Histoy
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****************************************************************************/
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#include <glut.h>
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#include <wrap/gl/math.h>
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#include <wrap/gl/space.h>
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#include <vcg/space/point3.h>
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#include <map>
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namespace vcg
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{
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/** Class Add_Ons.
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This is class draw 3d icons on the screen
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*/
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class Add_Ons
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{
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public:
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enum DrawMode {DMUser,DMWire,DMSolid} ;
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private:
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///used to find right trasformation in caso of rotation
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static void XAxis( Point3d zero, Point3d uno, Matrix44d & tr){
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tr.SetZero();
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*((Point3d*)&tr[0][0]) = uno-zero;
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GetUV(*((Point3d*)tr[0]),*((Point3d*)tr[1]),*((Point3d*)tr[2]));
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tr[3][3] = 1.0;
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*((Point3d*)&tr[3][0]) = zero;
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}
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//set drawingmode parameters
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static void SetGLParameters(DrawMode DM)
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{
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switch(DM)
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{
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case DMUser :
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break;
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case DMWire :
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glDisable(GL_LIGHTING);
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glDisable(GL_NORMALIZE);
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glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
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break;
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case DMSolid :
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glPolygonMode(GL_FRONT,GL_FILL);
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break;
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default :
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break;
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}
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}
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///draw a cylinder
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static void Cylinder(int slices,double lenght,double width)
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{
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static std::map<int,GLint> Disp_listMap;
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GLint cyl_List=-1;
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std::map<int,GLint>::const_iterator it=Disp_listMap.find(slices);
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///if the diplay list is createdtake the Glint that identify it
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bool to_insert=false;
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if (it!=Disp_listMap.end())///the list exist
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{cyl_List=it->second;}
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else to_insert=true;
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glScaled(lenght,width,width);
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if (!glIsList(cyl_List))
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{
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cyl_List = glGenLists(1);
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glNewList(cyl_List, GL_COMPILE);
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int b;
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vcg::Point3d p0;
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vcg::Point3d p1;
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double step=6.28/(double)slices;
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double angle=0;
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glBegin(GL_TRIANGLE_STRIP);
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for(b = 0; b <= slices; ++b){
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//double angle = 6.28*b/(double)lenght;
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//double angle = 6.28*(double)b;
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angle+=step;
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//p0 = Point3d( 0, width * sin(angle),width * cos(angle));
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p0 = Point3d( 0, sin(angle),cos(angle));
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//p1 = p0; p1[0] = lenght;
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p1 = p0; p1[0] = 1.f;
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glNormal3f(p0[0],p0[1],p0[2]);
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glVertex3d(p0[0],p0[1],p0[2]);
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glVertex3d(p1[0],p1[1],p1[2]);
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}
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glEnd();
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glEndList();
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}
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glCallList(cyl_List);
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///I insert key and value in the map if I need
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if (to_insert)
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Disp_listMap.insert(std::pair<int,GLint>(slices,cyl_List));
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}
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static void Diamond (double radius)
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{
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static GLint diam_List=-1;
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glScaled(radius,radius,radius);
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if (!glIsList(diam_List))
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{
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diam_List = glGenLists(1);
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glNewList(diam_List, GL_COMPILE);
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glBegin(GL_TRIANGLE_FAN);
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glNormal3f( 0.0, 1, 0.0);
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glVertex3f(0.0,1,0.0);
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glNormal3f( 1, 0.0, 0.0);
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glVertex3f( 1, 0.0, 0.0);
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glNormal3f( 0.0, 0.0, -1);
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glVertex3f( 0.0, 0.0,-1);
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glNormal3f(-1, 0.0 , 0.0);
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glVertex3f(-1, 0.0, 0.0);
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glNormal3f( 0.0, 0.0, 1);
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glVertex3f( 0.0, 0.0, 1);
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glNormal3f( 1, 0.0, 0.0);
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glVertex3f( 1, 0.0, 0.0);
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glEnd();
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glBegin(GL_TRIANGLE_FAN);
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glNormal3f( 0.0, 1, 0.0);
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glVertex3f( 0.0,-1, 0.0);
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glNormal3f( 1, 0.0, 0.0);
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glVertex3f( 1, 0.0, 0.0);
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glNormal3f( 0.0, 0.0, 1);
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glVertex3f( 0.0, 0.0, 1);
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glNormal3f(-1,0.0 , 0.0);
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glVertex3f(-1, 0.0, 0.0);
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glNormal3f( 0.0,0.0, -1);
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glVertex3f( 0.0, 0.0,-1);
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glNormal3f( 1, 0.0, 0.0);
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glVertex3f( 1, 0.0, 0.0);
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glEnd();
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glEndList();
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}
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glCallList(diam_List);
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}
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///draw a cone
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static void Cone(int slices,double lenght,double width)
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{
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static std::map<int,GLint> Disp_listMap;
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GLint cone_List=-1;
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std::map<int,GLint>::const_iterator it=Disp_listMap.find(slices);
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///if the diplay list is createdtake the Glint that identify it
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bool to_insert=false;
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if (it!=Disp_listMap.end())///the list exist
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{cone_List=it->second;}
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else to_insert=true;
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glScaled(lenght,width,width);
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if (!glIsList(cone_List))
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{
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int h;
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vcg::Point3d p0;
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glScaled(lenght,width,width);
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cone_List = glGenLists(1);
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glNewList(cone_List, GL_COMPILE);
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for(h=0; h < 2; ++h){
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glBegin(GL_TRIANGLE_FAN);
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p0 = Point3d(0,0,0);
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if(h==0)
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//p0[0]+=lenght;
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p0[0]+=1.f;
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glNormal3f(1,0.0,0.0);
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glVertex3d(p0[0],p0[1],p0[2]);
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int b;
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for(b = 0; b <= slices; ++b){
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double angle = -6.28*b/(double)slices;
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//double ratio= lenght/width;
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//Point3d N0( ratio,ratio*sin(angle),ratio* cos(angle) );
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Point3d N0( 1.f,sin(angle),cos(angle) );
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glNormal3f(N0[0],N0[1],N0[2]);
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//p0 = Point3d( 0, width * sin(angle),width * cos(angle));
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p0 = Point3d( 0,sin(angle),cos(angle));
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glVertex3d(p0[0],p0[1],p0[2]);
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}
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glEnd();
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glEndList();
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}
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}
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glCallList(cone_List);
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///I insert key and value in the map if I need
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if (to_insert)
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Disp_listMap.insert(std::pair<int,GLint>(slices,cone_List));
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}
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public:
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/// draw an arrow from tail to head
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/// body_width = width of the body of arrow
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/// head_lenght = lenght of the head of arrow
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/// head_width = width of the head of arrow
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/// body_slice = number of slices on the body
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/// head_slice = number of slices on the head
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template <DrawMode dm>
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static void glArrow(Point3d tail, Point3d head,double body_width,double head_lenght,
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double head_width,int body_slice=10,int head_slice=10)
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{
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Matrix44d tr;
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XAxis(tail,head,tr);
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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SetGLParameters(dm);
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glPushMatrix();
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glMultMatrixd(&tr[0][0]);
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//Arrow( (head-tail).Norm(),body_width,head_lenght,head_width,body_size,head_size);
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vcg::Point3d Direct=(head-tail);
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double l_body=Direct.Norm()-head_lenght;
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glPushMatrix();
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glTranslate(vcg::Point3d(tail.Norm(),0,0));
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Cylinder(body_slice,l_body,body_width);
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glPopMatrix();
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glTranslate(vcg::Point3d(l_body,0,0));
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Cone(head_slice,head_lenght,head_width);
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glPopMatrix();
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glPopAttrib();
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}
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/// draw a cone from tail to head
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/// width = width of the base of the cone
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/// slice = number of slices on the cone
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template <DrawMode dm>
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static void glCone(Point3d tail, Point3d head,double width,int slice=10)
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{
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Matrix44d tr;
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XAxis(tail,head,tr);
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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SetGLParameters(dm);
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glPushMatrix();
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vcg::Point3d Direct=(head-tail);
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double l_body=Direct.Norm();
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glTranslate(vcg::Point3d(tail.Norm(),0,0));
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Cone(slice,l_body,width);
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glPopMatrix();
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glPopAttrib();
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}
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/// draw a cylinder from tail to head
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/// width = width of the base of the cylinder
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/// slice = number of slices on the cylinder
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template <DrawMode dm>
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static void glCylinder(Point3d tail, Point3d head,double width,int slice=10)
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{
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Matrix44d tr;
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XAxis(tail,head,tr);
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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SetGLParameters(dm);
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glPushMatrix();
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vcg::Point3d Direct=(head-tail);
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double l_body=Direct.Norm();
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glTranslate(vcg::Point3d(tail.Norm(),0,0));
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Cylinder(slice,l_body,width);
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glPopAttrib();
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glPopMatrix();
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}
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/// draw a point in Center
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/// size = Radius of the point
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/// slices = The number of subdivisions around the Z axis (similar to lines of longitude).
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/// stacks = The number of subdivisions along the Z axis (similar to lines of latitude).
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template <DrawMode dm>
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static void glPoint(vcg::Point3f Center,float size,int slices =16,int stacks =16)
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{
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glPushMatrix();
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glTranslate(Center);
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if (dm==DMWire)
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glutWireSphere(size,slices,stacks);
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else
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if (dm==DMSolid)
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glutSolidSphere(size,slices,stacks);
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else
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glutSolidSphere(size,slices,stacks);
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glPopMatrix();
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}
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/// draw a point in Center
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/// size = Radius of the point
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/// slices = The number of subdivisions around the Z axis (similar to lines of longitude).
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/// stacks = The number of subdivisions along the Z axis (similar to lines of latitude).
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template <DrawMode dm>
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static void glDiamond (Point3f Center, double size)
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{
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glPushAttrib(GL_ALL_ATTRIB_BITS);
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SetGLParameters(dm);
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glPushMatrix();
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glTranslated(Center[0],Center[1],Center[2]);
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Diamond(size);
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glPopMatrix();
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glPopAttrib();
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}
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};
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}
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