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vcglib/apps/shadevis/shadevis.cpp

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#include <stdlib.h>
#include <stdio.h>
#include <time.h>
#include <GL/glew.h>
#include <GL/glut.h>
#include <wrap/gl/space.h>
#include <wrap/callback.h>
#include <wrap/gui/trackball.h>
#include <vcg/simplex/vertex/with/vcvn.h>
#include <vcg/simplex/vertex/with/vcvn.h>
#include <vcg/simplex/face/with/fcfn.h>
#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>
#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 > {};
class AFace : public FaceFCFN< AVertex,MyEdge,AFace > {};
class AMesh : public tri::TriMesh< vector<AVertex>, vector<AFace> > {};
///////// Global ////////
int SampleNum=32;
int WindowRes=800;
bool SwapFlag=false;
float lopass=0,hipass=1,gamma=1;
bool LightFlag=true;
bool ColorFlag=true;
Trackball Q;
int ScreenH,ScreenW;
float ViewAngle=45;
class TimeOracle
{
public:
time_t start;
time_t cur;
char buf[128];
char const *TimeToEndStr(double perc)
{
time(&cur);
double diff=difftime(cur,start);
diff= diff/perc - diff;
int hh=diff/3600;
int mm=(diff-hh*3600)/60;
int ss=diff-hh*3600-mm*60;
sprintf(buf,"%02i:%02i:%02i",hh,mm,ss);
return buf;
}
void Start(){time(&start);};
};
bool cb(const char *buf)
{
printf(buf);
return true;
}
// prototypes
void SaveTexturedGround();
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()); glColor((*fi).V(0)->C()); glVertex((*fi).V(0)->P());
glNormal((*fi).V(1)->N()); glColor((*fi).V(1)->C()); glVertex((*fi).V(1)->P());
glNormal((*fi).V(2)->N()); glColor((*fi).V(2)->C()); glVertex((*fi).V(2)->P());
}
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;
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gluPerspective(ViewAngle,(float)w/(float)h,.1,10000);
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
}
void ViewDisplay (void)
{
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
gluPerspective(ViewAngle,1,.1,10);
glMatrixMode (GL_MODELVIEW);
glLoadIdentity ();
glTranslatef(0,0,-4);
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
Q.GetView();
Q.Apply();
Q.Draw();
float d = 2.0/m.bbox.Diag();
glScalef(d, d, d);
glTranslate(-m.bbox.Center());
if(LightFlag) glEnable(GL_LIGHTING);
else glDisable(GL_LIGHTING);
if(ColorFlag) glEnable(GL_COLOR_MATERIAL);
else glDisable(GL_COLOR_MATERIAL);
Draw(m);
glutSwapBuffers();
}
void ViewSpecialKey(int , int , int )
{
glutPostRedisplay();
}
void Toggle(bool &flag) {flag = !flag;}
/*********************************************************************/
/*********************************************************************/
/*********************************************************************/
void ViewKey(unsigned char key, int , int )
{
Point3f dir;
switch (key) {
case 27: exit(0); break;
case 'l' :
lopass=lopass+.05; printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma);
Vis.MapVisibility(gamma,lopass,hipass);
break;
case 'L' :
lopass=lopass-.05; printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma);
Vis.MapVisibility(gamma,lopass,hipass);
break;
case 'h' :
hipass=hipass-.05; printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma);
Vis.MapVisibility(gamma,lopass,hipass);
break;
case 'H' :
hipass=hipass+.05; printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma);
Vis.MapVisibility(gamma,lopass,hipass);
break;
case 'g' :
gamma=gamma-.05; printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma);
Vis.MapVisibility(gamma,lopass,hipass);
break;
case 'G' :
gamma=gamma+.05; printf("Lo %f, Hi %f Gamma %f\n",lopass,hipass,gamma);
Vis.MapVisibility(gamma,lopass,hipass);
break;
case 'c' :
Vis.ComputeUniform(SampleNum,cb);
Vis.MapVisibility(gamma,lopass,hipass);
break;
case ' ' : {
Point3f dir = Q.camera.ViewPoint();
printf("ViewPoint %f %f %f\n",dir[0],dir[1],dir[2]);
dir.Normalize();
dir=Inverse(Q.track.Matrix())*dir;
printf("ViewPoint %f %f %f\n",dir[0],dir[1],dir[2]);
dir.Normalize();
Vis.ComputeSingle(dir,cb);
Vis.MapVisibility(gamma,lopass,hipass); }
break;
case 's' :
Vis.SmoothVisibility();
Vis.MapVisibility(gamma,lopass,hipass);
break;
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 'a' : LightFlag = !LightFlag; printf("Toggled Light\n"); break;
case 'A' : ColorFlag = !ColorFlag; printf("Toggled Color\n"); break;
}
glutPostRedisplay(); ;
}
void ViewMenu(int val)
{
ViewKey(val, 0, 0);
}
/*********************************************************************/
// TrackBall Functions
/*********************************************************************/
int PressedButton; // What is the button actually pressed?
int KeyMod;
int GW,GH; // Grandezza della finestra
int B[3]={0,0,0}; // Variabile globale che tiene lo stato dei tre bottoni;
void ViewMouse(int button, int state, int x, int y)
{
static int glut_buttons=0;
int m_mask = 0;
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;
if(state == GLUT_DOWN) {
glut_buttons |= (1<<button);
Q.MouseDown(x, ScreenH-y, glut_buttons | m_mask);
} else {
//glut_buttons &= ~(1<<button);
glut_buttons = 0;
m_mask = 0;
Q.MouseUp(x, ScreenH-y, glut_buttons);
}
}
void ViewMouseMotion(int x, int y)
{
Q.MouseMove(x,ScreenH-y);
glutPostRedisplay();
}
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_AMBIENT, light_ambient0);
glLightfv(GL_LIGHT0, GL_DIFFUSE, light_diffuse0);
glLightfv(GL_LIGHT0, GL_POSITION, light_position0);
glEnable(GL_LIGHT0);
}
void ViewInit (void) {
SetLight();
Q.Reset();
Q.radius= 1;
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);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glEnable(GL_COLOR_MATERIAL);
glColorMaterial(GL_FRONT,GL_DIFFUSE);
//glColorMaterial(GL_FRONT,GL_AMBIENT_AND_DIFFUSE);
//glColorMaterial(GL_FRONT,GL_AMBIENT);
glMateriali(GL_FRONT,GL_SHININESS,0);
float spec[4]={0,0,0,1};
glMaterialfv(GL_FRONT,GL_SPECULAR,spec);
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
}
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 32)\n"
" -z# z offset (default 1e-4)\n"
" -da # Cone Direction Angle in degree (default 45)\n"
" -dv # # # Cone Direction vector (default 0 0 1)\n"
" -c Set IsClosed Flag\n"
" -f Flip normal of the model\n"
);
return 1;
}
int i=1;
while(i<argc && (argv[i][0]=='-'))
{
switch(argv[i][1])
{
case 'n' : SampleNum = atoi(argv[i]+2); break;
case 'f' : SwapFlag=false; 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;
}
string basename = argv[i];
if(!(basename.substr(basename.length()-4)==".ply")) {
printf("Error: Unknown file extension %s\n",basename.c_str());
return 1;
}
// loading original mesh
int ret=tri::io::ImporterPLY<AMesh>::Open(m,argv[i]);
if(ret) {printf("Error unable to open mesh %s\n",argv[i]);exit(-1);}
tri::UpdateNormals<AMesh>::PerVertexNormalized(m);
tri::UpdateBounding<AMesh>::Box(m);
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]);
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);
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();
glewInit();
glutMainLoop();
return(0);
}
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