fiore@3: #include "GraphicManager.h"
fiore@3: 
fiore@3: void GraphicManager::init(void){
fiore@3: 
fiore@3:     // Enable depth buffering for hidden surface removal.
fiore@3:     glDepthFunc(GL_LEQUAL);
fiore@3:     glEnable(GL_DEPTH_TEST);
fiore@3:     
fiore@3:     // Cull back faces.
fiore@3:     glCullFace(GL_BACK);
fiore@3:     glEnable(GL_CULL_FACE);
fiore@3:     
fiore@3:     // Setup other misc features.
fiore@3:     glEnable(GL_LIGHTING);
fiore@3:     glEnable(GL_NORMALIZE);
fiore@3:     glShadeModel(GL_SMOOTH);
fiore@3:     
fiore@3:     // Setup lighting model.
fiore@3:     glLightModeli(GL_LIGHT_MODEL_LOCAL_VIEWER, GL_FALSE);
fiore@3:     glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_FALSE);    
fiore@3:     glLightModelfv(GL_LIGHT_MODEL_AMBIENT, light_model_ambient);
fiore@3:     glLightfv(GL_LIGHT0, GL_DIFFUSE, light0_diffuse);
fiore@3:     glLightfv(GL_LIGHT0, GL_POSITION, light0_direction);
fiore@3:     glEnable(GL_LIGHT0);  
fiore@3: 
fiore@3: 	
fiore@3: }
fiore@3: 
fiore@3: void GraphicManager::draw(void){
fiore@3: 	 glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);   
fiore@3:     // Draw 3D cursor at haptic device position.
fiore@3:     drawCursor();
fiore@3: 
fiore@3: 	glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT);
fiore@3: 	glEnable(GL_COLOR_MATERIAL);
fiore@3: 	   
fiore@3: 	// Draw each of the nodes as lit sphere.
fiore@3: 	int numNodes = collectionsManager->getNodesNum();
fiore@3:     GLdouble dPointSize;
fiore@3: 	
fiore@3: 	for ( int i = 0; i < numNodes; i++){
fiore@3: 		dPointSize = nodeSize;
fiore@3:         glColor3dv(nodeColor);
fiore@3: 			
fiore@3: 		glPushMatrix();
fiore@3: 		CollectionsManager::NodeData & nd = collectionsManager->getNodeData(i); 
fiore@3: 		glTranslated(nd.x,nd.y, 0);
fiore@3: 		double dPointScale = dPointSize * gWorldScale;
fiore@3: 		glScaled(dPointScale, dPointScale, dPointScale);        
fiore@3: 		/* draw shpere */
fiore@3: 		glutSolidSphere(0.5, 10, 10);
fiore@3:         glPopMatrix();
fiore@3:     }
fiore@3: 
fiore@3: 	//draw edges
fiore@3: 	glColor3f(1.0, 0.0, 0.0);
fiore@3:     glLineWidth(2.0);
fiore@3: 	glPushAttrib(GL_ENABLE_BIT);
fiore@3: 	glDisable(GL_LIGHTING);  
fiore@3: 	glEnable(GL_COLOR_MATERIAL);
fiore@3: 	
fiore@3: 	int numEdges = collectionsManager->getEdgesNum();
fiore@3: 	for(int i = 0; i < numEdges; i++){
fiore@3: 		CollectionsManager::EdgeData & ed = collectionsManager->getEdgeData(i);
fiore@3: 		glPushAttrib(GL_ENABLE_BIT);
fiore@3: 		glLineStipple(1, ed.stipplePattern);
fiore@3: 		glEnable(GL_LINE_STIPPLE);
fiore@3: 		glBegin(GL_LINES);
fiore@3: 		for(unsigned int j = 0; j < ed.getSize(); j++){
fiore@3: 			for(unsigned int k = j; k < ed.getSize(); k++){
fiore@3: 				if(ed.adjMatrix[j][k]){
fiore@3: 					glVertex3d(ed.x[j],ed.y[j],0);
fiore@3: 					glVertex3d(ed.x[k],ed.y[k],0);
fiore@3: 				}
fiore@3: 			}
fiore@3: 		}
fiore@3: 		glEnd();		
fiore@3: 		glPopAttrib();
fiore@3: 	}
fiore@3:     glPopAttrib();
fiore@3: 	glPopMatrix();
fiore@3: 
fiore@3: }
fiore@3: 
fiore@3: void GraphicManager::drawCursor(){
fiore@3:     HLdouble proxyxform[16];
fiore@3: 
fiore@3:     GLUquadricObj *qobj = 0;
fiore@3: 
fiore@3:     glPushAttrib(GL_CURRENT_BIT | GL_ENABLE_BIT | GL_LIGHTING_BIT);
fiore@3:     glPushMatrix();
fiore@3:     if (!gCursorDisplayList){
fiore@3:         gCursorDisplayList = glGenLists(1);
fiore@3:         glNewList(gCursorDisplayList, GL_COMPILE);
fiore@3:         qobj = gluNewQuadric();
fiore@3:                
fiore@3:         gluCylinder(qobj, 0.0, kCursorRadius, kCursorHeight,
fiore@3:                     kCursorTess, kCursorTess);
fiore@3:         glTranslated(0.0, 0.0, kCursorHeight);
fiore@3:         gluCylinder(qobj, kCursorRadius, 0.0, kCursorHeight / 5.0,
fiore@3:                     kCursorTess, kCursorTess);
fiore@3:     
fiore@3:         gluDeleteQuadric(qobj);
fiore@3:         glEndList();
fiore@3:     }
fiore@3:     
fiore@3:     // Get the proxy transform in world coordinates.
fiore@3:     hlGetDoublev(HL_PROXY_TRANSFORM, proxyxform);
fiore@3:     glMultMatrixd(proxyxform);
fiore@3: 
fiore@3:     // Apply the local cursor scale factor.
fiore@3:     glScaled(gCursorScale, gCursorScale, gCursorScale);
fiore@3: 	
fiore@3:     glEnable(GL_COLOR_MATERIAL);
fiore@3: 
fiore@3: 	if(hapticManager->isDraggingNode()){
fiore@3: 		glColor3dv(nodeColor);
fiore@3: 		glutSolidSphere(0.25, 10, 10);
fiore@3: 	}else if(hapticManager->isDraggingEdge()){
fiore@3: 		glColor3dv(edgeColor);
fiore@3: 		glutSolidSphere(0.12,10,10);
fiore@3: 	}
fiore@3: 	glColor3f(0.0, 0.5, 1.0);
fiore@3:     glCallList(gCursorDisplayList);
fiore@3: 
fiore@3:     glPopMatrix(); 
fiore@3:     glPopAttrib();
fiore@3: }
fiore@3: 
fiore@3: const double GraphicManager::kCursorRadius = 0.5;
fiore@3: const double GraphicManager::kCursorHeight = 1.5;
fiore@3: const int GraphicManager::kCursorTess = 15;
fiore@3: 
fiore@3: const GLfloat GraphicManager::light_model_ambient[] = {0.3f, 0.3f, 0.3f, 1.0f};
fiore@3: const GLfloat GraphicManager::light0_diffuse[] = {0.9f, 0.9f, 0.9f, 0.9f};   
fiore@3: const GLfloat GraphicManager::light0_direction[] = {0.0f, -0.4f, 1.0f, 0.0f}; 
fiore@3: 
fiore@3: 
fiore@3: const double GraphicManager::nodeSize = 10;
fiore@3: 
fiore@3: const hduVector3Dd GraphicManager::nodeColor(1.0, 1.0, 1.0);
fiore@3: const hduVector3Dd GraphicManager::edgeColor(1.0,0.0,0.0);
fiore@3: