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TrackerModel.cpp

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#include <blort/Tracker/TrackerModel.h>
#include <blort/Tracker/Resources.h>

using namespace std;
using namespace Tracking;
using namespace TomGine;

// *** PUBLIC ***

// Constructors
TrackerModel::TrackerModel(){
        m_tex_original = 0;
        m_texture = 0;
        m_textured = false;
        m_bfc = false;
        m_boundingSphereRadius = 0.0;
        m_shadeTexturingID = 0;
        m_dlTexturedFaces = 0;
        m_dlUntexturedFaces = 0;
        m_dlPass = 0;
        m_dlFaces = 0;
        m_dlEdges = 0;
        m_dlNormals = 0;
        
        if((m_shadeTexturingID = g_Resources->AddShader("texturing", "texturing.vert", "texturing.frag")) == -1)
                exit(1);
        m_shadeTexturing = g_Resources->GetShader(m_shadeTexturingID);
}

TrackerModel::~TrackerModel(){  
        releasePassList();
        g_Resources->ReleaseShader(m_shadeTexturingID);
        
        if(m_texture) delete(m_texture);
        if(m_tex_original) delete(m_tex_original);
        
        if(glIsList(m_dlTexturedFaces))         glDeleteLists(m_dlTexturedFaces, 1);
        if(glIsList(m_dlUntexturedFaces))       glDeleteLists(m_dlUntexturedFaces, 1);
        if(glIsList(m_dlPass))                          glDeleteLists(m_dlPass, 1);
        if(glIsList(m_dlFaces))                         glDeleteLists(m_dlFaces, 1);
        if(glIsList(m_dlEdges))                         glDeleteLists(m_dlEdges, 1);
        if(glIsList(m_dlNormals))                       glDeleteLists(m_dlNormals, 1);

}

TrackerModel& TrackerModel::operator=(const TrackerModel& m){
        m_vertices = m.m_vertices;
        m_faces = m.m_faces;
        m_lines = m.m_lines;
        m_facepixellist = m.m_facepixellist;
        
        for(unsigned i=0; i<m.m_passlist.size(); i++){
                Pass* p = new(Pass);
                p->f = m.m_passlist[i]->f;
                p->modelviewprojection = m.m_passlist[i]->modelviewprojection;
                p->x = m.m_passlist[i]->x;
                p->y = m.m_passlist[i]->y;
                p->w = m.m_passlist[i]->w;
                p->h = m.m_passlist[i]->h;
                
                // Copy Texture
                if(m.m_passlist[i]->texture){
                        int w = m.m_passlist[i]->texture->getWidth();
                        int h = m.m_passlist[i]->texture->getHeight();
                        int ipw = g_Resources->GetImageProcessor()->getWidth() >> 1;
                        int iph = g_Resources->GetImageProcessor()->getHeight() >> 1;
                        g_Resources->GetImageProcessor()->render(m.m_passlist[i]->texture, -int(w>>1),-int(h>>1),w,h);
                        p->texture->copyTexImage2D(ipw-int(w>>1),iph-int(h>>1),w,h);
                }
                m_passlist.push_back(p);
        }
        
        Update();
        return (*this);
}

TrackerModel::TrackerModel(const TomGine::tgModel& m)
: TomGine::tgModel(m)
{
        m_tex_original = 0;
        m_texture = 0;
        m_textured = false;
        m_bfc = false;
        m_boundingSphereRadius = 0.0;
        m_shadeTexturingID = 0;
        m_dlTexturedFaces = 0;
        m_dlUntexturedFaces = 0;
        m_dlPass = 0;
        m_dlFaces = 0;
        m_dlEdges = 0;
        m_dlNormals = 0;
        
        if((m_shadeTexturingID = g_Resources->AddShader("texturing", "texturing.vert", "texturing.frag")) == -1)
                exit(1);
        m_shadeTexturing = g_Resources->GetShader(m_shadeTexturingID);

        m_lines.clear();
        m_passlist.clear();     
        m_facepixellist.assign(m_faces.size(), 0);
        
        computeEdges();
        Update();
}

void TrackerModel::releasePassList(){
        for(unsigned i=0; i<m_passlist.size(); i++){
                delete(m_passlist[i]);
        }
        m_passlist.clear();
        m_facepixellist.assign(m_faces.size(), 0);
        m_textured = false;
//      UpdateDisplayLists();
}

// computes, updates
void TrackerModel::computeEdges(){
    int i,j;
    
    // Extract edges from faces
    for(i=0; i<(int)m_faces.size(); i++){
        for(j=0; j<(int)m_faces[i].v.size(); j++){
                tgLine e;
            e.start = m_vertices[m_faces[i].v[j]].pos;
            e.end = m_vertices[m_faces[i].v[(j+1)%m_faces[i].v.size()]].pos;
            if(!isRedundant(&e)){
                //ROS_DEBUG("Edge: %d %d\n", m_edgelist[k].start, m_edgelist[k].end);
                m_lines.push_back(e);
            }
        }
    }
}

void TrackerModel::computeBoundingSphere(){
        m_boundingSphereRadius = 0.0;
        
        float r = 0.0;
        vec3 v;
        
        for(unsigned i=0; i<m_vertices.size(); i++){
                v = m_vertices[i].pos;
                r = sqrt( pow(v.x,2) + pow(v.y,2) + pow(v.z,2) );
                if(r>m_boundingSphereRadius)
                        m_boundingSphereRadius = r;
        }
}

void TrackerModel::Update(){
        unsigned i,j;
        if(m_facepixellist.size() != m_faces.size())
                m_facepixellist.assign(m_faces.size(), 0);
                                
        for(i=0; i<m_passlist.size(); i++){
                for(j=0; j<m_passlist[i]->f.size(); j++){
                        m_facepixellist[m_passlist[i]->f[j]] = 1;
                }
        }
        
        computeBoundingSphere();
        
//      UpdateDisplayLists();
}

// draws, prints
void TrackerModel::Print() const{
        tgModel::Print();
        for(unsigned i=0; i<m_lines.size(); i++){
                ROS_DEBUG("Edge %i: %f %f %f,  %f %f %f\n", i,
                                m_lines[i].start.x, m_lines[i].start.y, m_lines[i].start.z,
                                m_lines[i].end.x, m_lines[i].end.y, m_lines[i].end.z);
        }
}

void TrackerModel::drawNormals(){
        genListNormals(0.01f);
//      glCallList(m_dlNormals);
}

void TrackerModel::drawTexturedFaces(){
        if(!m_passlist.empty()){
                genListTexturedFaces();
//              glCallList(m_dlTexturedFaces);
        }               
}

void TrackerModel::drawUntexturedFaces(){
        genListUntexturedFaces();
//      glCallList(m_dlUntexturedFaces);
}

void TrackerModel::drawPass(bool colorful){
        genListPass(colorful);
//      glCallList(m_dlPass);
}

void TrackerModel::drawFaces(bool colorful){
        if(m_texture)   m_texture->bind();
        
        genListFaces(colorful);
//      glCallList(m_dlFaces);

        if(m_texture) glDisable(GL_TEXTURE_2D); 
}

void TrackerModel::drawEdges(){
        genListEdges();
//      glCallList(m_dlEdges);
}

void TrackerModel::drawFace(int i){
        int j;
        tgFace* f;
        
        if(m_texture){
                glActiveTexture(GL_TEXTURE0);
                glEnable(GL_TEXTURE_2D);
                m_texture->bind();
        }

        f = &m_faces[i];
        if((int)f->v.size() == 3)
                glBegin(GL_TRIANGLES);
        else if(f->v.size() == 4)
                glBegin(GL_QUADS);
        else
                ROS_DEBUG("[TrackerModel::drawFaces] Warning unsupported face structure");
        
        for(j=0; j<(int)f->v.size(); j++){
                glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                glNormal3f(m_vertices[f->v[j]].normal.x, m_vertices[f->v[j]].normal.y, m_vertices[f->v[j]].normal.z);
                glVertex3f(m_vertices[f->v[j]].pos.x, m_vertices[f->v[j]].pos.y, m_vertices[f->v[j]].pos.z);
        }
                
        glEnd();
        
        if(m_texture){
                glDisable(GL_TEXTURE_2D);
        }
}

void TrackerModel::drawCoordinates(){
        glDisable(GL_DEPTH_TEST);
        glDisable(GL_CULL_FACE);
        
        float l1 = 0.06f;
        float l2 = 0.02f;
        float b1 = 0.001f;
        float b2 = 0.003f;
        
        // X - Axis
        glPushMatrix();
                glColor3f(1.0,0.0,0.0);
                glBegin(GL_TRIANGLE_FAN);
                        glVertex3f(l1,          0.0,     b1);
                        glVertex3f(0.0,         0.0,     b1);
                        glVertex3f(0.0,         0.0,    -b1);
                        glVertex3f(l1,          0.0,    -b1);
                        glVertex3f(l1,          0.0,    -b1-b2);
                        glVertex3f(l1+l2,       0.0,    0.0);
                        glVertex3f(l1,          0.0,     b1+b2);
                glEnd();
        glPopMatrix();
                
        // Y - Axis
        glPushMatrix();
                glColor3f(0.0,1.0,0.0);
                glRotatef(90, 0.0, 0.0, 1.0);
                glBegin(GL_TRIANGLE_FAN);
                        glVertex3f(l1,          0.0,     b1);
                        glVertex3f(0.0,         0.0,     b1);
                        glVertex3f(0.0,         0.0,    -b1);
                        glVertex3f(l1,          0.0,    -b1);
                        glVertex3f(l1,          0.0,    -b1-b2);
                        glVertex3f(l1+l2,       0.0,    0.0);
                        glVertex3f(l1,          0.0,     b1+b2);
                glEnd();
        glPopMatrix();
        
        // Z - Axis
        glPushMatrix();
                glColor3f(0.0,0.0,1.0);
                glRotatef(-90, 0.0, 1.0, 0.0);
                glBegin(GL_TRIANGLE_FAN);
                        glVertex3f(l1,          0.0,     b1);
                        glVertex3f(0.0,         0.0,     b1);
                        glVertex3f(0.0,         0.0,    -b1);
                        glVertex3f(l1,          0.0,    -b1);
                        glVertex3f(l1,          0.0,    -b1-b2);
                        glVertex3f(l1+l2,       0.0,    0.0);
                        glVertex3f(l1,          0.0,     b1+b2);
                glEnd();
        glPopMatrix();
}

// counts pixels of each face
// if pixels of face are > than in any previouse view
//   set update flag = true
vector<unsigned> TrackerModel::getFaceUpdateList(tgPose& p_max, vec3 view, float minTexGrabAngle, bool use_num_pixels){
        int i, n;
        vector<unsigned> faceUpdateList;
        float alpha;
        vec3 vT;
        mat3 mR;
        p_max.GetPose(mR, vT);
        view.normalize();
        
        p_max.Activate();
        
        // count pixels for each face and choose if its texture has to be updated

        unsigned int* queryPixels;              // Occlussion query for counting pixels
        queryPixels = (unsigned int*)malloc( sizeof(unsigned int) * m_faces.size() );
        glGenQueriesARB(m_faces.size(), queryPixels);
        for(i=0; i<(int)m_faces.size(); i++){
                glBeginQueryARB(GL_SAMPLES_PASSED_ARB, queryPixels[i]);

                drawFace(i);

                glEndQueryARB(GL_SAMPLES_PASSED_ARB);                   
        }

        for(i=0; i<(int)m_faces.size(); i++){

                glGetQueryObjectivARB(queryPixels[i], GL_QUERY_RESULT_ARB, &n);
        
                vec3 vn = mR * m_faces[i].normal;
                alpha = acos(vn*view);
                
                if(alpha>minTexGrabAngle){
                        if(use_num_pixels){
                                if(m_facepixellist[i]==0){
                                        faceUpdateList.push_back(i);
                                        m_facepixellist[i] = n;
                                }
                        }else{
                                faceUpdateList.push_back(i);
                                m_facepixellist[i] = n;
                        }
                }

        }
        p_max.Deactivate();
        
        glDeleteQueriesARB(m_faces.size(), queryPixels);
        free(queryPixels);

        return faceUpdateList;
}

void TrackerModel::getBoundingBox2D( int width, int height, TomGine::tgPose& p_max, TomGine::tgCamera* m_cam,
                                                                         int &minX, int &maxX, int &minY, int &maxY)
{
        // Extract transformation matrix (from object to image space)
        mat4 modelview, projection, modelviewprojection;
        mat3 rot;
        vec3 pos;
        p_max.GetPose(rot,pos);
        mat4 matModel = mat4(rot);
        matModel[12]=pos.x; matModel[13]=pos.y; matModel[14]=pos.z;
        mat4 matView = m_cam->GetExtrinsic();
        projection = m_cam->GetIntrinsic();
        modelview = matView * matModel;
        modelviewprojection = projection * modelview;
        
        // calculate bounding rectangle
        vec4 texCoords;
        vec3 p;
        float x_min=(float)width;
        float y_min=(float)height;
        float x_max=0.0;
        float y_max=0.0;
        float x,y;
        for(unsigned j=0; j<m_vertices.size(); j++){
                p = m_vertices[j].pos;
                texCoords = modelviewprojection * vec4(p.x, p.y, p.z, 1.0);
                x = (texCoords.x / texCoords.w + 1.0f) * 0.5f;
                y = (texCoords.y / texCoords.w + 1.0f) * 0.5f;
                if(x<x_min)     x_min = x;
                if(y<y_min)     y_min = y;
                if(x>x_max) x_max = x;
                if(y>y_max)     y_max = y;
        }
        
        // Calculate bounding rectangle in pixels
        minX = (int)round(x_min * width);
        maxX = (int)round(x_max * width);
        minY = (int)round(y_min * height);
        maxY = (int)round(y_max * height);
}

void TrackerModel::textureFromImage(Texture* image,
                                                                        int width, int height,
                                                                        tgPose& p_max,
                                                                        vec3 view,
                                                                        float minTexGrabAngle,
                                                                        std::vector<unsigned> faceUpdateList,
                                                                        std::vector<tgVertex> &vertices,
                                                                        TomGine::tgCamera* m_cam)
{
        unsigned i,j;
        int k;
        vec4 texcoords_model;
        vec4 vertex;
        //double mv[16];
        //double pj[16];
        mat4 modelview, projection, modelviewprojection;

        // add new rendering pass
        Pass* newpass = new Pass;
        
        // query modelview and projection matrix
//      p_max.activate();
//      glGetDoublev(GL_MODELVIEW_MATRIX, mv);          // TODO to inaccurate, replace with modelview of p_max and projection of camera
//      glGetDoublev(GL_PROJECTION_MATRIX, pj);
//      p_max.deactivate();
//      for(i=0; i<16; i++){
//              modelview.mat[i] = (float)mv[i];
//              projection.mat[i] = (float)pj[i];
//      }
//      newpass->modelviewprojection = projection * modelview;
        mat3 rot;
        vec3 pos;
        p_max.GetPose(rot,pos);
        mat4 matModel = mat4(rot);
        matModel[12]=pos.x; matModel[13]=pos.y; matModel[14]=pos.z;
        mat4 matView = m_cam->GetExtrinsic();
        projection = m_cam->GetIntrinsic();
        modelview = matView * matModel;
        modelviewprojection = projection * modelview;
        newpass->modelviewprojection = modelviewprojection;
        
        
        // calculate bounding rectangle
        vec4 texCoords;
        vec3 p;
        tgVertex v;
        float x_min=(float)width;
        float y_min=(float)height;
        float x_max=0.0;
        float y_max=0.0;
        float x,y;
        float w2 = float(width>>1);
        float h2 = float(height>>1);
        for(i=0; i<faceUpdateList.size(); i++){
                k = faceUpdateList[i];
                for(j=0; j<m_faces[k].v.size(); j++){
                        p = m_vertices[m_faces[k].v[j]].pos;
                        texCoords = modelviewprojection * vec4(p.x, p.y, p.z, 1.0);
                        x = (texCoords.x / texCoords.w + 1.0f) * 0.5f;
                        y = (texCoords.y / texCoords.w + 1.0f) * 0.5f;
                        m_vertices[m_faces[k].v[j]].texCoord.x = x;
                        m_vertices[m_faces[k].v[j]].texCoord.y = y;
                        if(x<x_min)     x_min = x;
                        if(y<y_min)     y_min = y;
                        if(x>x_max) x_max = x;
                        if(y>y_max)     y_max = y;
                }
        }
        
        // Store bounding box
        newpass->x      = x_min;
        newpass->w      = x_max-x_min;
        newpass->y      = y_min;
        newpass->h      = y_max-y_min;
        
        // Calculate bounding rectangle in pixels
        x_min = (x_min * width);
        x_max = (x_max * width);
        y_min = (y_min * height);
        y_max = (y_max * height);

        v.pos.x = x_min - w2;
        v.pos.y = y_min - h2;
        vertices.push_back(v);
        v.pos.x = x_max - w2;
        v.pos.y = y_min - h2;
        vertices.push_back(v);
        v.pos.x = x_max - w2;
        v.pos.y = y_max - h2;
        vertices.push_back(v);
        v.pos.x = x_min - w2;
        v.pos.y = y_max - h2;
        vertices.push_back(v);
        
        // store texture
        newpass->texture->copyFromTexture(image, (int)x_min, (int)y_min, unsigned(x_max-x_min), unsigned(y_max-y_min));
        
        // add faces to pass
        newpass->f = faceUpdateList;
        
        m_passlist.push_back(newpass);
                        
        // clean up passes
        std::vector<unsigned int> texturedfaces;
        int m=0;
        for(m=(m_passlist.size()-1); m>=0; m--){                // parse through passlist topdown
                Pass* p = m_passlist[m];                                        // current pass
                bool destroy = true;
                
                for(j=0; j<p->f.size(); j++){                           // for each face of pass
                        bool face_allready_in_use = false;
                        for(k=0; k<(int)texturedfaces.size(); k++){
                                if(p->f[j] == texturedfaces[k])                 // compare with each face in usedfaces
                                        face_allready_in_use = true;
                        }
                        if(!face_allready_in_use){
                                texturedfaces.push_back(p->f[j]);
                                destroy=false;
                        }
                }
                
                if(destroy){
                        delete(p);
                        m_passlist.erase(m_passlist.begin()+m);
                }
        }
        
        if(!m_passlist.empty())
                m_textured = true;
        
//      UpdateDisplayLists();
}

void TrackerModel::useTexCoords(bool useTC){

        m_shadeTexturing->bind();
        m_shadeTexturing->setUniform("useTexCoords",useTC);
        m_shadeTexturing->unbind();

}

void TrackerModel::unwarpTexturesBox_hacky(const char* name){

        char charbuffer[8];
        Texture tex;
        glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);

        for(unsigned p=0; p<m_passlist.size(); p++){

                if(m_passlist[p]->f.size() != 1){
                        ROS_DEBUG("[TrackerModel::unwarpTexturesBox_hacky] Warning no more than one face per pass allowed\n");
                        return;
                }

                tgFace* f = &m_faces[m_passlist[p]->f[0]];
                if(f->v.size()!=4){
                        ROS_DEBUG("[TrackerModel::unwarpTexturesBox_hacky] Warning only quad faces allowed\n");
                        return;
                }

                ImageProcessor *ip = g_Resources->GetImageProcessor();
                ip->setCamOrtho();
                glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

                float x = m_passlist[p]->h * ip->getHeight() * 0.75;
                float y = m_passlist[p]->w * ip->getWidth() * 0.75;
                float z = 0.0;
                float nz = 1.0;

                glEnable(GL_TEXTURE_2D);

                m_passlist[p]->texture->bind();

                glBegin(GL_QUADS);
                        unsigned j=0;
                        glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                        glNormal3f(0.0, 0.0, nz);
                        glVertex3f(-x, -y, z);

                        j=1;
                        glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                        glNormal3f(0.0, 0.0, nz);
                        glVertex3f( x, -y, z);

                        j=2;
                        glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                        glNormal3f(0.0, 0.0, nz);
                        glVertex3f( x, y, z);

                        j=3;
                        glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                        glNormal3f(0.0, 0.0, nz);
                        glVertex3f(-x, y, z);
                glEnd();

                int ix = (ip->getWidth() >> 1) - (int)x;
                int iy = (ip->getHeight() >> 1) - (int)y;

                tex.copyTexImage2D(ix, iy, int(x)<<1, int(y)<<1);

                std::string texname = std::string(name);
                texname.append("-unwrap-");
                sprintf(charbuffer, "%.5d", p);
                texname.append(charbuffer);
                texname.append(".jpg");
                tex.save(texname.c_str());

        }

}

// *** PROTECTED ***

// Tests redundancy of edge
bool TrackerModel::isRedundant(TomGine::tgLine* e1){
        tgLine* e2;
        vec3 vs, ve;
        
        for(int i=0; i<(int)m_lines.size(); i++){
                e2 = &m_lines[i];
                
                // Get Vector between start-start and end-end points of edges
                vs = e1->start - e2->start;
                ve = e1->end - e2->end;
//              vs = vec3(      m_vertices[e1->start].x - m_vertices[e2->start].pos.x,
//                                      m_vertices[e1->start].pos.y - m_vertices[e2->start].pos.y,
//                                      m_vertices[e1->start].pos.z - m_vertices[e2->start].pos.z);
//              ve = vec3(      m_vertices[e1->end].pos.x - m_vertices[e2->end].pos.x,
//                                      m_vertices[e1->end].pos.y - m_vertices[e2->end].pos.y,
//                                      m_vertices[e1->end].pos.z - m_vertices[e2->end].pos.z);
                // if sum of length between vertices is insignificant then redundancy is detected
                if(vs.length() + ve.length() < 0.01){
                        //ROS_DEBUG("Redundant edge detected: %d %d\n", e1->start, e1->end);
                        return true;
                }
                
                // Get Vector between start-end and end-start points of edges
                vs = e1->start - e2->end;
                ve = e1->end - e2->start;
//              vs = vec3(      m_vertices[e1->start].pos.x - m_vertices[e2->end].pos.x,
//                                      m_vertices[e1->start].pos.y - m_vertices[e2->end].pos.y,
//                                      m_vertices[e1->start].pos.z - m_vertices[e2->end].pos.z);
//              ve = vec3(      m_vertices[e1->end].pos.x - m_vertices[e2->start].pos.x,
//                                      m_vertices[e1->end].pos.y - m_vertices[e2->start].pos.y,
//                                      m_vertices[e1->end].pos.z - m_vertices[e2->start].pos.z);
                // if sum of length between vertices is insignificant then redundancy is detected
                if(vs.length() + ve.length() < 0.01){
                        //ROS_DEBUG("Redundant edge detected: %d %d\n", e1->start, e1->end);
                        return true;
                }
                                                
        }
        return false;
}

// Generate all display lists
void TrackerModel::UpdateDisplayLists(){

        if(glIsList(m_dlTexturedFaces))         glDeleteLists(m_dlTexturedFaces, 1);
        if(glIsList(m_dlUntexturedFaces)) glDeleteLists(m_dlUntexturedFaces, 1);
        if(glIsList(m_dlPass))                                          glDeleteLists(m_dlPass, 1);
        if(glIsList(m_dlFaces))                                         glDeleteLists(m_dlFaces, 1);
        if(glIsList(m_dlEdges))                                         glDeleteLists(m_dlEdges, 1);
        if(glIsList(m_dlNormals))                               glDeleteLists(m_dlNormals, 1);

        m_dlTexturedFaces = glGenLists(1);
        m_dlUntexturedFaces = glGenLists(1);
        m_dlPass = glGenLists(1);
        m_dlFaces = glGenLists(1);
        m_dlEdges = glGenLists(1);
        m_dlNormals = glGenLists(1);

        if(!m_passlist.empty()){
                glNewList(m_dlTexturedFaces, GL_COMPILE);
                        genListTexturedFaces();
                glEndList();
                
                glNewList(m_dlPass, GL_COMPILE);
                        genListPass();
                glEndList();
        }else{
                glNewList(m_dlPass, GL_COMPILE);
                        genListFaces();
                glEndList();
        }
        
        glNewList(m_dlUntexturedFaces, GL_COMPILE);
                genListUntexturedFaces();
        glEndList();
        
        glNewList(m_dlFaces, GL_COMPILE);
                genListFaces();
        glEndList();
        
        glNewList(m_dlEdges, GL_COMPILE);
                genListEdges();
        glEndList();
        
        glNewList(m_dlNormals, GL_COMPILE);
                genListNormals(0.01f);
        glEndList();    
}

// Display List generators
void TrackerModel::genListTexturedFaces(){              // draw only textured faces
                
        int p,i,j;
        tgFace* f;
        
        if(m_bfc) glEnable(GL_CULL_FACE);
        else glDisable(GL_CULL_FACE);
        
        for(p=0; p<(int)m_passlist.size(); p++){
                // parse through faces of pass
                for(i=0; i<(int)m_passlist[p]->f.size(); i++){
                        f = &m_faces[m_passlist[p]->f[i]];
                        
                        if(f->v.size() == 3)
                                glBegin(GL_TRIANGLES);
                        else if(f->v.size() == 4)
                                glBegin(GL_QUADS);
                        else
                                ROS_DEBUG("[TrackerModel::drawFaces] Warning unsupported face structure");
                                
                        for(j=0; j<(int)f->v.size(); j++){
                                glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                                glNormal3f(m_vertices[f->v[j]].normal.x, m_vertices[f->v[j]].normal.y, m_vertices[f->v[j]].normal.z);
                                glVertex3f(m_vertices[f->v[j]].pos.x, m_vertices[f->v[j]].pos.y, m_vertices[f->v[j]].pos.z);
                        }
                        glEnd();                        
                }//for i
        }//for p
}

void TrackerModel::genListUntexturedFaces(){            // draw only untextured faces
        int i,j;
        tgFace* f;
        
        if(m_bfc) glEnable(GL_CULL_FACE);
        else glDisable(GL_CULL_FACE);
        
        for(i=0; i<(int)m_faces.size(); i++){
                
                f = &m_faces[i];
                if(m_facepixellist[i] == 0){
                
                        if(f->v.size() == 3)
                                glBegin(GL_TRIANGLES);
                        else if(f->v.size() == 4)
                                glBegin(GL_QUADS);
                        else
                                ROS_DEBUG("[TrackerModel::drawFaces] Warning unsupported face structure");
                                
                        for(j=0; j<(int)f->v.size(); j++){
                                glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                                glNormal3f(m_vertices[f->v[j]].normal.x, m_vertices[f->v[j]].normal.y, m_vertices[f->v[j]].normal.z);
                                glVertex3f(m_vertices[f->v[j]].pos.x, m_vertices[f->v[j]].pos.y, m_vertices[f->v[j]].pos.z);
                        }
                        
                        glEnd();                        
                }//if
        }       //for
}

void TrackerModel::genListPass(bool colorful){          // draw faces using passlist and shader for texturing (modelviewmatrix)
        int p,i,j;
        tgFace* f;
        vec2 texCoords;
        
        if(m_bfc) glEnable(GL_CULL_FACE);
        else glDisable(GL_CULL_FACE);
        
        glActiveTexture(GL_TEXTURE0);
        glEnable(GL_TEXTURE_2D);
        glColor3f(1.0,1.0,1.0);

        m_shadeTexturing->bind();
        
        // Draw render passes (textured)
        for(p=0; p<(int)m_passlist.size(); p++){
                
                // bind texture of pass
                m_passlist[p]->texture->bind();
                // set modelview matrix for texture
//              ROS_DEBUG("x,y,w,h: %f %f %f %f\n", m_passlist[p]->x, m_passlist[p]->y, m_passlist[p]->w, m_passlist[p]->h);
//              ROS_DEBUG("face %d: %d %d %d %d\n", m_passlist[p]->f[0],
//                              m_faces[m_passlist[p]->f[0]].v[0], 
//                              m_faces[m_passlist[p]->f[0]].v[1],
//                              m_faces[m_passlist[p]->f[0]].v[2], 
//                              m_faces[m_passlist[p]->f[0]].v[3]);
//              ROS_DEBUG("modelview: %f %f %f %f\n", m_passlist[p]->modelviewprojection.mat[0], m_passlist[p]->modelviewprojection.mat[1], m_passlist[p]->modelviewprojection.mat[2], m_passlist[p]->modelviewprojection.mat[3]);

                m_shadeTexturing->setUniform("modelviewprojection", m_passlist[p]->modelviewprojection, GL_FALSE);
                m_shadeTexturing->setUniform("x", m_passlist[p]->x);
                m_shadeTexturing->setUniform("y", m_passlist[p]->y);
                m_shadeTexturing->setUniform("w", m_passlist[p]->w);
                m_shadeTexturing->setUniform("h", m_passlist[p]->h);
                
                // parse through faces of pass
                for(i=0; i<(int)m_passlist[p]->f.size(); i++){
                        f = &m_faces[m_passlist[p]->f[i]];
                        
                        if(f->v.size() == 3)
                                glBegin(GL_TRIANGLES);
                        else if(f->v.size() == 4)
                                glBegin(GL_QUADS);
                        else
                                ROS_DEBUG("[TrackerModel::drawFaces] Warning unsupported face structure");
                                
                                for(j=0; j<(int)f->v.size(); j++){
                                        
//                                      vec4 v = vec4(m_vertices[f->v[j]].pos.x, m_vertices[f->v[j]].pos.y, m_vertices[f->v[j]].pos.z, 1.0);
//                                      v = m_passlist[p]->modelviewprojection * v;
//                                      texCoords.x = (v.x/v.w + 1.0) * 0.5;
//                                      texCoords.y = (v.y/v.w + 1.0) * 0.5;
//                                      glTexCoord2f(texCoords.x, texCoords.y);

                                        glTexCoord2fv(m_vertices[f->v[j]].texCoord);
                                        glNormal3fv(m_vertices[f->v[j]].normal);
                                        glVertex3fv(m_vertices[f->v[j]].pos);
                                }
                                
                        glEnd();
                }//for i
        }//for p
                
        glDisable(GL_TEXTURE_2D);
        m_shadeTexturing->unbind();
        
        if(colorful) glDisable(GL_LIGHTING);
        vec3 color;
        
        // Draw remaining faces for contours
        for(i=0; i<(int)m_faces.size(); i++){
                
                if(m_facepixellist[i] == 0){
                                
                        if(m_faces[i].v.size() == 3)
                                glBegin(GL_TRIANGLES);
                        else if(m_faces[i].v.size() == 4)
                                glBegin(GL_QUADS);
                        else
                                ROS_DEBUG("[TrackerModel::drawFaces] Warning unsupported face structure");
                        
                        color.random();
                        for(j=0; j<(int)m_faces[i].v.size(); j++){                              
                                glNormal3fv(m_vertices[m_faces[i].v[j]].normal);
                                if(colorful) glColor3fv(color);
                                glVertex3fv(m_vertices[m_faces[i].v[j]].pos);
//                              ROS_DEBUG("%f %f %f\n", m_vertices[m_faces[i].v[j]].normal.x, m_vertices[m_faces[i].v[j]].normal.y, m_vertices[m_faces[i].v[j]].normal.z);
                        }
                        
                        glEnd();
                }//if
        }//for i
}

void TrackerModel::genListFaces(bool colorful){         // draw all faces of model
        int i,j;
        tgFace* f;
        
        if(m_bfc) glEnable(GL_CULL_FACE);
        else glDisable(GL_CULL_FACE);

        for(i=0; i<(int)m_faces.size(); i++){
                f = &m_faces[i];
                
                if((int)f->v.size() == 3)
                        glBegin(GL_TRIANGLES);
                else if((int)f->v.size() == 4)
                        glBegin(GL_QUADS);
                else
                        ROS_DEBUG("[TrackerModel::drawFaces] Warning unsupported face structure");
                        
                        for(j=0; j<(int)f->v.size(); j++){
                                glTexCoord2f(m_vertices[f->v[j]].texCoord.x, m_vertices[f->v[j]].texCoord.y);
                                glNormal3f(m_vertices[f->v[j]].normal.x, m_vertices[f->v[j]].normal.y, m_vertices[f->v[j]].normal.z);
                                glVertex3f(m_vertices[f->v[j]].pos.x, m_vertices[f->v[j]].pos.y, m_vertices[f->v[j]].pos.z);
                        }
                        
                glEnd();
        }
}

void TrackerModel::genListEdges(){              // draw all edges of model
        mat4 mv;
        mat3 rot;
        vec3 v_cam_object;
        float s = -0.001f;      // = 1mm
        
        glGetFloatv(GL_MODELVIEW_MATRIX, mv);
        
        //ROS_DEBUG("%f %f %f %f\n", mv[0], mv[4], mv[8], mv[12]);
        //ROS_DEBUG("%f %f %f %f\n", mv[1], mv[5], mv[9], mv[13]);
        //ROS_DEBUG("%f %f %f %f\n", mv[2], mv[6], mv[10], mv[14]);
        //ROS_DEBUG("%f %f %f %f\n\n", mv[3], mv[7], mv[11], mv[15]);
        
        rot[0] = mv[0]; rot[1] = mv[4]; rot[2] = mv[8];
        rot[3] = mv[1]; rot[4] = mv[5]; rot[5] = mv[9];
        rot[6] = mv[2]; rot[7] = mv[6]; rot[8] = mv[10];
        
        v_cam_object[0] = mv[12];
        v_cam_object[1] = mv[13];
        v_cam_object[2] = mv[14];
        
        v_cam_object = rot * v_cam_object * s;
        
        glPushMatrix();
                // draw edges slightly closer to camera to avoid edge-flickering
                glTranslatef(v_cam_object[0], v_cam_object[1], v_cam_object[2]);

                glBegin(GL_LINES);
                        for(int i=0; i<(int)m_lines.size(); i++){
                                glNormal3f( m_lines[i].end.x - m_lines[i].start.x,
                                                        m_lines[i].end.y - m_lines[i].start.y,
                                                        m_lines[i].end.z - m_lines[i].start.z );
                                glVertex3f(m_lines[i].start.x, m_lines[i].start.y, m_lines[i].start.z);
                                glVertex3f(m_lines[i].end.x, m_lines[i].end.y, m_lines[i].end.z);
                        }
                glEnd();

    glPopMatrix();
}

void TrackerModel::genListNormals(float normal_length){ // draw normals
        unsigned i,j;
        tgFace* f;
        
        glDisable(GL_TEXTURE_2D);
        glColor3f(0.0, 0.0, 1.0);
        
        glBegin(GL_LINES);
        for(i=0; i<m_faces.size(); i++){
                f = &m_faces[i];
                for(j=0; j<f->v.size(); j++){
                        glVertex3f( m_vertices[f->v[j]].pos.x,
                                                                        m_vertices[f->v[j]].pos.y,
                                                                        m_vertices[f->v[j]].pos.z );
                        glVertex3f( m_vertices[f->v[j]].pos.x + m_vertices[f->v[j]].normal.x * normal_length,
                                                                        m_vertices[f->v[j]].pos.y + m_vertices[f->v[j]].normal.y * normal_length,
                                                                        m_vertices[f->v[j]].pos.z + m_vertices[f->v[j]].normal.z * normal_length );
                }
        }
        glEnd();
        
        glColor3f(1.0, 1.0, 1.0);
}

---

blort
Author(s): Michael Zillich, Thomas Mörwald, Johann Prankl, Andreas Richtsfeld, Bence Magyar (ROS version)
autogenerated on Fri Mar 1 16:57:15 2013