vcglib/apps/shadevis/shadevis.cpp

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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2004 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
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/****************************************************************************
History
$Log: not supported by cvs2svn $
2005-01-03 14:59:54 +01:00
Revision 1.8 2004/09/30 00:57:42 ponchio
Reference to temporary fixed and indented.
Revision 1.7 2004/09/28 09:46:51 cignoni
Added MapFalseColor
2004-09-28 11:46:51 +02:00
Revision 1.6 2004/09/16 14:08:35 ponchio
gamma is a math function.
2004-09-16 16:08:35 +02:00
Revision 1.5 2004/09/10 14:02:20 cignoni
Added Cone directions
2004-09-10 16:02:20 +02:00
Revision 1.4 2004/09/09 22:34:38 cignoni
Integrated lost modifications...
2004-09-10 00:37:48 +02:00
Revision 1.3 2004/09/09 14:35:54 ponchio
Various changes for gcc compatibility
2004-09-09 16:35:54 +02:00
Revision 1.2 2004/07/11 22:13:30 cignoni
Added GPL comments
2004-07-12 00:13:30 +02:00
****************************************************************************/
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#include <stdlib.h>
#include <stdio.h>
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#include <stdarg.h>
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#include <time.h>
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// this define is mandatory to avoid the conflicts due to the silly definition of
// min and max macros in windows.h (included by glut...)
#define NOMINMAX
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#include <GL/glew.h>
#include <GL/glut.h>
#include <wrap/gl/space.h>
#include <wrap/callback.h>
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#include <vcg/math/base.h>
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#include <wrap/gui/trackball.h>
#include <vcg/simplex/vertex/with/vcvn.h>
#include <vcg/simplex/vertex/with/vcvn.h>
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#include <vcg/simplex/face/with/fn.h>
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#include <vcg/space/index/grid_static_ptr.h>
#include <vcg/complex/trimesh/base.h>
#include<wrap/io_trimesh/export_ply.h>
#include<wrap/io_trimesh/import_ply.h>
#include<vcg/complex/trimesh/update/normal.h>
#include<vcg/complex/trimesh/update/bounding.h>
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#include<vcg/complex/trimesh/update/color.h>
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#include "visshader.h"
using namespace vcg;
using namespace std;
// Vertex, Face, Mesh and Grid definitions.
class MyEdge;
class AFace;
class AVertex : public VertexVCVN< float ,MyEdge,AFace > {};
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class AFace : public FaceFN< AVertex,MyEdge,AFace > {};
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class AMesh : public tri::TriMesh< vector<AVertex>, vector<AFace> > {};
///////// Global ////////
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int SampleNum=64;
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int WindowRes=800;
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unsigned int TexInd=0;
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bool SwapFlag=false;
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bool CullFlag=false;
bool ClosedFlag=false;
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Point3f ConeDir(0,1,0);
float ConeAngleRad = math::ToRad(180.0f);
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float lopass=0,hipass=1,gamma_correction=1;
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float diff=.8;
float ambi=.2;
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bool LightFlag=true;
bool ColorFlag=true;
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bool FalseColorFlag=false;
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bool ShowDirFlag=false;
int imgcnt=0;
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Color4b BaseColor=Color4b::White;
Trackball QV;
Trackball QL;
Trackball *Q=&QV;
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int ScreenH,ScreenW;
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float ViewAngle=33;
vector<Point3f> ViewVector;
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bool cb(const char *buf)
{
printf(buf);
return true;
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}
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void BuildOnePixelTexture(Color4b c, unsigned int &TexInd)
{
if(TexInd==0) glGenTextures(1,&TexInd);
glBindTexture(GL_TEXTURE_1D,TexInd);
glTexImage1D(GL_TEXTURE_1D,0,GL_RGBA,1,0,GL_RGBA,GL_UNSIGNED_BYTE,&c);
glEnable(GL_TEXTURE_1D);
glTexEnvi(GL_TEXTURE_ENV,GL_TEXTURE_ENV_MODE,GL_MODULATE);
}
void glutPrintf(int x, int y, const char * f, ... )
{
glMatrixMode (GL_PROJECTION);
glPushMatrix();
glLoadIdentity ();
glOrtho(0,ScreenW,0,ScreenH,-1,1);
glMatrixMode (GL_MODELVIEW);
glPushMatrix();
glLoadIdentity ();
int len, i;
char buf[4096];
va_list marker;
va_start( marker, f );
int n = vsprintf(buf,f,marker);
va_end( marker );
glColor3f(0,0,0);
glRasterPos2f(x, y);
len = (int) strlen(buf);
for (i = 0; i < len; i++) {
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_12, buf[i]);
}
glMatrixMode (GL_PROJECTION);
glPopMatrix();
glMatrixMode (GL_MODELVIEW);
glPopMatrix();
}
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// prototypes
void SaveTexturedGround();
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void DrawViewVector()
{
glDisable(GL_LIGHTING);
glColor3f(0,0,1);
glBegin(GL_LINES);
for(unsigned int i=0;i<ViewVector.size();++i)
{
glVertex3f(0,0,0);glVertex(ViewVector[i]);
}
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glEnd();
}
void DrawLightVector()
{
const int sz=5;
glPushMatrix();
QL.Apply();
glDisable(GL_LIGHTING);
glBegin(GL_LINES);
glColor3f(1,1,0);
for(unsigned int i=0;i<=sz;++i)
for(unsigned int j=0;j<=sz;++j)
{
glColor3f(1,1,0);
glVertex3f(-1.0f+i*2.0/sz,-1.0f+j*2.0/sz,-1);
glVertex3f(-1.0f+i*2.0/sz,-1.0f+j*2.0/sz, 1);
}
glEnd();
glPopMatrix();
}
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void Draw(AMesh &mm)
{
AMesh::FaceIterator fi;
glBegin(GL_TRIANGLES);
for(fi=mm.face.begin();fi!=mm.face.end();++fi)
{
glNormal((*fi).V(0)->N()); if(ColorFlag) glColor((*fi).V(0)->C()); glVertex((*fi).V(0)->P());
glNormal((*fi).V(1)->N()); if(ColorFlag) glColor((*fi).V(1)->C()); glVertex((*fi).V(1)->P());
glNormal((*fi).V(2)->N()); if(ColorFlag) glColor((*fi).V(2)->C()); glVertex((*fi).V(2)->P());
}
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glEnd();
}
AMesh m;
VertexVisShader<AMesh> Vis(m);
string OutNameMsh;
/* Called when the window is first opened and whenever
* the window is reconfigured (moved or resized).
*/
void ViewReshape(GLsizei w, GLsizei h)
{
ScreenW=w; ScreenH=h;
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glViewport(0,0,w,h);
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}
void ViewDisplay (void)
{
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glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
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gluPerspective(ViewAngle,(float)ScreenW/ScreenH,1,7);
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glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
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glPushMatrix();
QL.Apply();
glutPrintf(5,5,"Diffuse %04.2f Ambient %04.2f "
" LowPass %04.2f HiPass %04.2f Gamma %04.2f ",
diff,ambi,lopass,hipass,gamma_correction);
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GLfloat light_position0[] = {0.0, 10.0, 300.0, 0.0};
glLightfv(GL_LIGHT0, GL_POSITION, light_position0);
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glPopMatrix();
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glTranslatef(0,0,-4);
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if(Q==&QL) DrawLightVector();
QL.GetView();
QV.GetView();
QV.Apply();
if(ShowDirFlag) DrawViewVector();
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float d = 2.0/m.bbox.Diag();
glScalef(d, d, d);
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glColor3f(diff,diff,diff);
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glTranslate(-m.bbox.Center());
if(LightFlag) glEnable(GL_LIGHTING);
else glDisable(GL_LIGHTING);
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if(ColorFlag) glEnable(GL_COLOR_MATERIAL);
else glDisable(GL_COLOR_MATERIAL);
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if(FalseColorFlag) glColorMaterial(GL_FRONT,GL_DIFFUSE);
else glColorMaterial(GL_FRONT,GL_AMBIENT);
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glMateriali(GL_FRONT,GL_SHININESS,0);
float spec[4]={0,0,0,1};
float ambientV[4]={ambi,ambi,ambi,1};
float diffuseV[4]={diff,diff,diff,1};
glMaterialfv(GL_FRONT,GL_SPECULAR,spec);
glMaterialfv(GL_FRONT,GL_AMBIENT, ambientV);
glMaterialfv(GL_FRONT,GL_DIFFUSE, diffuseV);
glCullFace(GL_BACK);
if(CullFlag) glEnable(GL_CULL_FACE);
else glDisable(GL_CULL_FACE);
BuildOnePixelTexture(BaseColor,TexInd);
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Draw(m);
glutSwapBuffers();
}
void ViewSpecialKey(int , int , int )
{
glutPostRedisplay();
}
void Toggle(bool &flag) {flag = !flag;}
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void UpdateVis()
{
if( LightFlag && !FalseColorFlag)
Vis.MapVisibility(gamma_correction,lopass,hipass,ambi);
if(!LightFlag && !FalseColorFlag)
Vis.MapVisibility(gamma_correction,lopass,hipass,1.0);
if(FalseColorFlag)
Vis.MapFalseColor();
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}
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/*********************************************************************/
/*********************************************************************/
/*********************************************************************/
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void ViewKey(unsigned char key, int , int )
{
Point3f dir;
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switch (key) {
case 27: exit(0); break;
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case 9: if(Q==&QV) Q=&QL;else Q=&QV; break;
case 'l' :
lopass=lopass+.05;
printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma_correction);
UpdateVis(); break;
case 'L' :
lopass=lopass-.05;
printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma_correction);
UpdateVis(); break;
case 'h' :
hipass=hipass-.05;
printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma_correction);
UpdateVis(); break;
case 'H' :
hipass=hipass+.05;
printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma_correction);
UpdateVis(); break;
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case 'd' : diff+=.05; printf("Ambient %f Diffuse %f, \n",ambi,diff); UpdateVis(); break;
case 'D' : diff-=.05; printf("Ambient %f Diffuse %f, \n",ambi,diff); UpdateVis(); break;
case 'a' : ambi+=.05; printf("Ambient %f Diffuse %f, \n",ambi,diff); UpdateVis(); break;
case 'A' : ambi-=.05; printf("Ambient %f Diffuse %f, \n",ambi,diff); UpdateVis(); break;
case 'e' : ambi+=.05; diff-=.05;
printf("Ambient %f Diffuse %f, \n",ambi,diff);
UpdateVis(); break;
case 'E' : ambi-=.05; diff+=.05;
printf("Ambient %f Diffuse %f, \n",ambi,diff);
UpdateVis(); break;
case 'p' :
gamma_correction=gamma_correction-.05;
printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma_correction);
UpdateVis(); break;
case 'P' :
gamma_correction=gamma_correction+.05;
printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma_correction);
UpdateVis(); break;
case 13 :
//Vis.ComputeUniform(SampleNum,ViewVector,cb);
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Vis.ComputeUniformCone(SampleNum,ViewVector, ConeAngleRad,ConeDir,cb);
UpdateVis(); break;
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case ' ' : {
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Point3f dir = Q->camera.ViewPoint();
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printf("ViewPoint %f %f %f\n",dir[0],dir[1],dir[2]);
dir.Normalize();
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dir=Inverse(Q->track.Matrix())*dir;
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printf("ViewPoint %f %f %f\n",dir[0],dir[1],dir[2]);
dir.Normalize();
Vis.ComputeSingle(dir,ViewVector,cb);
UpdateVis();
} break;
case 'r' : BaseColor[0]=min(255,BaseColor[0]+2);
printf("BaseColor %3i %3i %3i \n",BaseColor[0],BaseColor[1],BaseColor[2]);
break;
case 'R' : BaseColor[0]=max( 0,BaseColor[0]-2);
printf("BaseColor %3i %3i %3i \n",BaseColor[0],BaseColor[1],BaseColor[2]);
break;
case 'g' : BaseColor[1]=min(255,BaseColor[1]+2);
printf("BaseColor %3i %3i %3i \n",BaseColor[0],BaseColor[1],BaseColor[2]);
break;
case 'G' : BaseColor[1]=max( 0,BaseColor[1]-2);
printf("BaseColor %3i %3i %3i \n",BaseColor[0],BaseColor[1],BaseColor[2]);
break;
case 'b' : BaseColor[2]=min(255,BaseColor[2]+2);
printf("BaseColor %3i %3i %3i \n",BaseColor[0],BaseColor[1],BaseColor[2]);
break;
case 'B' : BaseColor[2]=max( 0,BaseColor[2]-2);
printf("BaseColor %3i %3i %3i \n",BaseColor[0],BaseColor[1],BaseColor[2]);
break;
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case 'v' : Toggle(ShowDirFlag); break;
case 'V' :
{
SimplePic<Color4b> snapC;
snapC.OpenGLSnap();
char buf[128];
sprintf(buf,"Snap%03i.ppm",imgcnt++);
snapC.SavePPM(buf);
}
case 's' :
Vis.SmoothVisibility();
UpdateVis(); break;
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case 'S' :
{
vcg::tri::io::PlyInfo p;
p.mask|=vcg::ply::PLYMask::PM_VERTCOLOR /* | vcg::ply::PLYMask::PM_VERTQUALITY*/ ;
tri::io::ExporterPLY<AMesh>::Save(m,OutNameMsh.c_str(),false,p);
}
break;
case 'C' : LightFlag = !LightFlag;
printf("Toggled Light %s\n",LightFlag?"on":"off");
UpdateVis(); break;
case 'c' : ColorFlag = !ColorFlag;
printf("Toggled Color %s\n",ColorFlag?"on":"off"); break;
case 'f' : FalseColorFlag = !FalseColorFlag;
printf("Toggled FalseColor %s\n",ColorFlag?"on":"off");
UpdateVis(); break;
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case '1' : diff=0.80f; ambi=0.10f; gamma_correction=1.0; lopass=0.00f; hipass=1.00f; ColorFlag=false; UpdateVis(); break;
case '2' : diff=0.65f; ambi=0.30f; gamma_correction=1.0; lopass=0.15f; hipass=0.80f; ColorFlag=true; UpdateVis(); break;
case '3' : diff=0.45f; ambi=0.50f; gamma_correction=1.0; lopass=0.20f; hipass=0.75f; ColorFlag=true; UpdateVis(); break;
case '4' : diff=0.35f; ambi=0.60f; gamma_correction=1.0; lopass=0.25f; hipass=0.70f; ColorFlag=true; UpdateVis(); break;
}
glutPostRedisplay(); ;
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}
void ViewMenu(int val)
{
ViewKey(val, 0, 0);
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}
/*********************************************************************/
// TrackBall Functions
/*********************************************************************/
int GW,GH; // Grandezza della finestra
void ViewMouse(int button, int state, int x, int y)
{
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static int KeyMod=0;
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static int glut_buttons=0;
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//printf("ViewMouse %i %i %i %i\n",x,y,button,state);
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int m_mask = 0;
if(state == GLUT_DOWN) {
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KeyMod=glutGetModifiers();
if(GLUT_ACTIVE_SHIFT & KeyMod) m_mask |= Trackball::KEY_SHIFT;
if(GLUT_ACTIVE_ALT & KeyMod) m_mask |= Trackball::KEY_ALT;
if(GLUT_ACTIVE_CTRL & KeyMod) m_mask |= Trackball::KEY_CTRL;
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glut_buttons |= (1<<button);
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Q->MouseDown(x, ScreenH-y, glut_buttons | m_mask);
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} else {
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if(GLUT_ACTIVE_SHIFT & KeyMod) m_mask |= Trackball::KEY_SHIFT;
if(GLUT_ACTIVE_ALT & KeyMod) m_mask |= Trackball::KEY_ALT;
if(GLUT_ACTIVE_CTRL & KeyMod) m_mask |= Trackball::KEY_CTRL;
glut_buttons |= (1<<button);
Q->MouseUp(x, ScreenH-y, glut_buttons | m_mask);
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}
}
void ViewMouseMotion(int x, int y)
{
Q->MouseMove(x,ScreenH-y);
glutPostRedisplay();
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}
void SetLight()
{
GLfloat light_ambient0[] = {0.0, 0.0, 0.0, 1.0};
GLfloat light_diffuse0[] = {1.0, 1.0, 1.0, 1.0};
GLfloat light_position0[] = {0.0, 10.0, 300.0, 0.0};
glLightfv(GL_LIGHT0, GL_POSITION, light_position0);
glLightfv(GL_LIGHT0, GL_AMBIENT, light_diffuse0);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse0);
glEnable(GL_LIGHT0);
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glLightModelfv(GL_LIGHT_MODEL_AMBIENT,light_ambient0);
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}
void ViewInit (void) {
SetLight();
Q->Reset();
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Q->radius= 1;
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glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
glClearColor (0.8, 0.8, 0.8, 0.0);
glEnable(GL_NORMALIZE);
glEnable(GL_LIGHTING);
// glEnable(GL_BLEND);
glShadeModel(GL_SMOOTH);
// glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);
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glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
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}
int main(int argc, char** argv)
{
if(argc<2) {
printf(
"shadevis 1.0 \n"__DATE__"\n"
"Copyright 2003-2004 Visual Computing Lab I.S.T.I. C.N.R.\n"
"Paolo Cignoni (cignoni@isti.cnr.it)\n\n"
"Usage: shadevis file.ply [options]\n"
"Options:\n"
" -w# WindowResolution (default 600)\n"
" -n# Sample Directions (default 64)\n"
" -z# z offset (default 1e-3)\n"
" -c assume that the mesh is closed (slightly faster, default false)\n"
" -f Flip normal of the model\n"
" -da # Cone Direction Angle in degree (default 180)\n"
" -dv # # # Cone Direction vector (default 0 0 1)\n"
);
return 1;
}
srand(time(0));
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int i=1;
while(i<argc && (argv[i][0]=='-'))
{
switch(argv[i][1])
{
case 'd' :
if(argv[i][2] == 'a') {
ConeAngleRad = math::ToRad(atof(argv[i+1])); ++i; break;
}
if(argv[i][2] == 'v') {
Point3f p(atof(argv[i+1]),atof(argv[i+2]),atof(argv[i+3]));
ConeDir = Normalize(p);
i+=3; break;
}
printf("Error unable to parse option '%s'\n",argv[i]);
exit(0);
break;
case 'n' : SampleNum = atoi(argv[i]+2); break;
case 'f' : SwapFlag=false; break;
case 'c' : ClosedFlag=true; break;
case 'w' : WindowRes= atoi(argv[i]+2);
printf("Set WindowRes to %i\n",WindowRes ); break;
case 's' : Vis.SplitNum= atoi(argv[i]+2);
printf("Set SplitNum to %i\n",Vis.SplitNum ); break;
case 'z' : Vis.ZTWIST = atof(argv[i]+2);
printf("Set ZTWIST to %f\n",Vis.ZTWIST ); break;
default: {
printf("Error unable to parse option '%s'\n",argv[i]);
exit(0);
}
}
++i;
}
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string basename = argv[i];
if(!(basename.substr(basename.length()-4)==".ply")) {
printf("Error: Unknown file extension %s\n",basename.c_str());
return 1;
}
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// loading original mesh
int ret=tri::io::ImporterPLY<AMesh>::Open(m,argv[i]);
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if(ret) {printf("Error unable to open mesh %s : '%s' \n",argv[i],tri::io::ImporterPLY<AMesh>::ErrorMsg(ret));exit(-1);}
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tri::UpdateNormals<AMesh>::PerVertexNormalized(m);
tri::UpdateBounding<AMesh>::Box(m);
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tri::UpdateColor<AMesh>::VertexConstant(m,Color4b::White);
Vis.IsClosedFlag=ClosedFlag;
Vis.Init();
UpdateVis();
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printf("Mesh bbox (%f %f %f)-(%f %f %f)\n\n",
m.bbox.min[0],m.bbox.min[1],m.bbox.min[2],
m.bbox.max[0],m.bbox.max[1],m.bbox.max[2]);
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OutNameMsh=(string(argv[i]).substr(0,strlen(argv[i])-4));
OutNameMsh+="_vis.ply";
printf("Mesh Output filename %s\n",OutNameMsh.c_str());
printf("Mesh %iv %if bbox Diag %g\n",m.vn,m.fn,m.bbox.Diag());
glutInit(&argc, argv);
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glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH);
glutInitWindowSize(WindowRes, WindowRes);
glutInitWindowPosition (10,10);
glutCreateWindow ("shadevis - Visual Computing Lab - vcg.isti.cnr.it ");
glutDisplayFunc(ViewDisplay);
glutReshapeFunc(ViewReshape);
glutKeyboardFunc(ViewKey);
glutSpecialFunc(ViewSpecialKey);
glutMouseFunc(ViewMouse);
glutMotionFunc(ViewMouseMotion);
ViewInit();
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glewInit();
glutMainLoop();
return(0);
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}