///////////////////////////////////////////////////////////
// Render the torus and sphere
void DrawObjects(void)
{
// Save the matrix state and do the rotations
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
// Translate the whole scene out and into view
glTranslatef(-0.75f, 0.0f, -2.5f);
// Initialize the names stack
glInitNames();
glPushName(0);
// Set material color, Yellow
// torus
glColor3f(1.0f, 1.0f, 0.0f);
glLoadName(TORUS);
glPassThrough((GLfloat)TORUS);
DrawTorus(40, 20);
// Draw Sphere
glColor3f(0.5f, 0.0f, 0.0f);
glTranslatef(1.5f, 0.0f, 0.0f);
glLoadName(SPHERE);
glPassThrough((GLfloat)SPHERE);
DrawSphere(0.5f);
// Restore the matrix state
glPopMatrix(); // Modelview matrix
}
///////////////////////////////////////////////////////////
// Render the torus and sphere
void DrawObjects(void)
{
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glTranslatef(-0.75f, 0.0f, -2.5f);
//初始化名称栈
glInitNames();
glPushName(0);
//圆环
glColor3f(1.0f, 1.0f, 0.0f);
//圆环的名称
glLoadName(TORUS);
//设置一个自定义的过渡标记，与圆环的名称相同，以便后面的解析判断
glPassThrough((GLfloat)TORUS);
DrawTorus(40, 20);
//球体
glColor3f(0.5f, 0.0f, 0.0f);
glTranslatef(1.5f, 0.0f, 0.0f);
//球体的名称
glLoadName(SPHERE);
//球体的过渡标记
glPassThrough((GLfloat)SPHERE);
DrawSphere(0.5f);
glPopMatrix();
}
// Render the cube and sphere
void DrawObjects(void)
{
// Save the matrix state and do the rotations
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
// Translate the whole scene out and into view
glTranslatef(-80.0f, 0.0f, -300.0f);
// Initialize the names stack
glInitNames();
glPushName(0);
// Set material color, Yellow
// Cube
glRGB(255, 255, 0);
glLoadName(CUBE);
glPassThrough((GLfloat)CUBE);
glutSolidCube(75.0f);
// Draw Sphere
glRGB(128,0,0);
glTranslatef(130.0f, 0.0f, 0.0f);
glLoadName(SPHERE);
glPassThrough((GLfloat)SPHERE);
glutSolidSphere(50.0f, 15, 15);
// Restore the matrix state
glPopMatrix(); // Modelview matrix
}
void CPhysEnv::GetNearestPoint(int x, int y)
{
/// Local Variables ///////////////////////////////////////////////////////////
float *feedBuffer;
int hitCount;
tParticle *tempParticle;
int loop;
///////////////////////////////////////////////////////////////////////////////
// INITIALIZE A PLACE TO PUT ALL THE FEEDBACK INFO (3 DATA, 1 TAG, 2 TOKENS)
feedBuffer = (float *)malloc(sizeof(GLfloat) * m_ParticleCnt * 6);
// TELL OPENGL ABOUT THE BUFFER
glFeedbackBuffer(m_ParticleCnt * 6,GL_3D,feedBuffer);
(void)glRenderMode(GL_FEEDBACK); // SET IT IN FEEDBACK MODE
tempParticle = m_CurrentSys;
for (loop = 0; loop < m_ParticleCnt; loop++)
{
// PASS THROUGH A MARKET LETTING ME KNOW WHAT VERTEX IT WAS
glPassThrough((float)loop);
// SEND THE VERTEX
glBegin(GL_POINTS);
glVertex3fv((float *)&tempParticle->pos);
glEnd();
tempParticle++;
}
hitCount = glRenderMode(GL_RENDER); // HOW MANY HITS DID I GET
//fout<<"hit count "<<hitCount<,endl;
CompareBuffer(hitCount,feedBuffer,(float)x,(float)y); // CHECK THE HIT
free(feedBuffer); // GET RID OF THE MEMORY
}
/* Draw a few lines and two points, one of which will
* be clipped. If in feedback mode, a passthrough token
* is issued between the each primitive.
*/
void drawGeometryFeedback(GLenum mode) {
glBegin(GL_LINE_STRIP);
glNormal3f(0.0, 0.0, 1.0);
glVertex3f(30.0, 30.0, 0.0);
glVertex3f(50.0, 60.0, 0.0);
glVertex3f(70.0, 40.0, 0.0);
glEnd();
if (mode == GL_FEEDBACK)
glPassThrough(1.0);
glBegin(GL_POINTS);
glVertex3f(-100.0, -100.0, -100.0); /* will be clipped */
glEnd();
if (mode == GL_FEEDBACK)
glPassThrough(2.0);
glBegin(GL_POINTS);
glNormal3f(0.0, 0.0, 1.0);
glVertex3f(50.0, 50.0, 0.0);
glEnd();
}
void DrawObjects(void)
{
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
if (gridFlag == 1){drawGrid();}
glTranslatef(0.0f, 0.0f, -120.5f);
glInitNames();
glPushName(0);
if (scene.size() != 0)
{
for (int i = 0; i < scene.size(); ++i)
{
glColor3f((GLfloat)(rand() % 1000) * 0.001,(GLfloat)(rand() % 1000) * 0.001,(GLfloat)(rand() % 1000) * 0.001);
printf("%f\n", (GLfloat)(rand() % 1000) * 0.001);
glLoadName(i + 1);
glPassThrough((GLfloat)i + 1);
glPushMatrix();
scene[i]->paintMyself();
glPopMatrix();
}
}
glMatrixMode(GL_MODELVIEW);
glPopMatrix();
}
void GlNode::draw(float lod,GlGraphInputData* data,Camera*) {
const Color& colorSelect2=data->parameters->getSelectionColor();
glEnable(GL_CULL_FACE);
node n=node(id);
if (data->getElementSelected()->getNodeValue(n)) {
glDisable(GL_DEPTH_TEST);
if(data->getGraph()->isMetaNode(n)) {
glStencilFunc(GL_LEQUAL,data->parameters->getSelectedMetaNodesStencil(),0xFFFF);
}
else {
glStencilFunc(GL_LEQUAL,data->parameters->getSelectedNodesStencil(),0xFFFF);
}
}
else {
glEnable(GL_DEPTH_TEST);
if(data->getGraph()->isMetaNode(n)) {
glStencilFunc(GL_LEQUAL,data->parameters->getMetaNodesStencil(),0xFFFF);
}
else {
glStencilFunc(GL_LEQUAL,data->parameters->getNodesStencil(),0xFFFF);
}
}
const Coord &nodeCoord = data->getElementLayout()->getNodeValue(n);
const Size &nodeSize = data->getElementSize()->getNodeValue(n);
const Color& fillColor = data->getElementColor()->getNodeValue(n);
const Color& strokeColor = data->getElementBorderColor()->getNodeValue(n);
const Color& textColor = data->getElementLabelColor()->getNodeValue(n);
GlTextureManager::getInst().setAnimationFrame(data->getElementAnimationFrame()->getNodeValue(n));
if(data->parameters->getFeedbackRender()) {
glPassThrough(TLP_FB_COLOR_INFO);
glPassThrough(fillColor[0]);
glPassThrough(fillColor[1]);
glPassThrough(fillColor[2]);
glPassThrough(fillColor[3]);
glPassThrough(strokeColor[0]);
glPassThrough(strokeColor[1]);
glPassThrough(strokeColor[2]);
glPassThrough(strokeColor[3]);
glPassThrough(textColor[0]);
glPassThrough(textColor[1]);
glPassThrough(textColor[2]);
glPassThrough(textColor[3]);
glPassThrough(TLP_FB_BEGIN_NODE);
glPassThrough(static_cast<float>(id)); //id of the node for the feed back mode
}
bool selected = data->getElementSelected()->getNodeValue(n);
if (lod < data->parameters->getPointModeLOD()) { //less than four pixel on screen, we use points instead of glyphs
if (lod < 1) lod = 1;
int size= static_cast<int>(sqrt(lod));
if(data->getGlVertexArrayManager()->renderingIsBegin()) {
if(size<2)
data->getGlVertexArrayManager()->activatePointNodeDisplay(this,true,selected);
else
data->getGlVertexArrayManager()->activatePointNodeDisplay(this,false,selected);
}
else {
if(size>2)
size=2;
const Color& color = selected ? colorSelect2 : fillColor;
OpenGlConfigManager::getInst().activateLineAndPointAntiAliasing();
glDisable(GL_LIGHTING);
setColor(color);
glPointSize(static_cast<float>(size));
glBegin(GL_POINTS);
glVertex3f(nodeCoord[0], nodeCoord[1], nodeCoord[2]+nodeSize[2]/2.f);
glEnd();
glEnable(GL_LIGHTING);
OpenGlConfigManager::getInst().desactivateLineAndPointAntiAliasing();
}
return;
}
//draw a glyph or make recursive call for meta nodes
glPushMatrix();
glTranslatef(nodeCoord[0], nodeCoord[1], nodeCoord[2]);
glRotatef(static_cast<float>(data->getElementRotation()->getNodeValue(n)), 0.f, 0.f, 1.f);
// If node size in z is equal to 0 we have to scale with FLT_EPSILON to preserve normal
// (because if we do a scale of (x,y,0) and if we have a normal like (0,0,1) the new normal after scale will be (0,0,0) and we will have light problem)
if(nodeSize[2]==0)
glScalef(nodeSize[0], nodeSize[1],FLT_EPSILON);
else
glScalef(nodeSize[0], nodeSize[1],nodeSize[2]);
data->glyphs.get(data->getElementShape()->getNodeValue(n))->draw(n,lod);
if (selected) {
OpenGlConfigManager::getInst().activateLineAndPointAntiAliasing();
selectionBox->setStencil(data->parameters->getSelectedNodesStencil()-1);
selectionBox->setOutlineColor(colorSelect2);
selectionBox->draw(10,NULL);
OpenGlConfigManager::getInst().desactivateLineAndPointAntiAliasing();
}
glPopMatrix();
if (selected) {
glStencilFunc(GL_LEQUAL,data->parameters->getNodesStencil(),0xFFFF);
}
GlTextureManager::getInst().setAnimationFrame(0);
if(data->parameters->getFeedbackRender()) {
glPassThrough(TLP_FB_END_NODE);
}
}
M(void, glPassThrough, jfloat token) {
glPassThrough(token);
}
/////////////////////////////////////////////////////////
// Render
//
void GEMglPassThrough :: render(GemState *state) {
glPassThrough (token);
}
void __glXDisp_PassThrough(GLbyte *pc)
{
glPassThrough(
*(GLfloat *)(pc + 0)
);
}
/* draw a model in feedback mode and return the list of visible vertices */
void
DrawModelFeedbackMode( Model *model, int width, int height,
Viewer3dParam *par, vector<int> &vertexIndices )
{
glEnable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glRenderMode (GL_RENDER);
GlClearWindow(1);
Setup3d( par );
DrawModel( model, 0);
GLfloat *pixels = (GLfloat*)malloc(3*width*height*sizeof(GLfloat));
glReadPixels(0,0,width, height, GL_DEPTH_COMPONENT,GL_FLOAT,(void*)pixels);
// no texture
int ii;
// init feedback mode
int BUFSIZE_FEEDBACK = 6 * ( model->NVertices() + 1 );
GLfloat *feedbackBuffer = (GLfloat *)malloc(BUFSIZE_FEEDBACK*sizeof(GLfloat));
if ( feedbackBuffer == NULL ) {
dbg(DBG_INFO, "Failed to init feedback data!\n");
}
glFeedbackBuffer(BUFSIZE_FEEDBACK,GL_3D,feedbackBuffer);
// set mode to feedback
glRenderMode(GL_FEEDBACK);
Setup3d( par );
for (ii=0;ii<model->NVertices();ii++) {
Vec3f vx = model->GetVertex(ii).v();
// pass index in feedback mode
glPassThrough(ii);
glBegin(GL_POINTS);
glVertex3f( vx[0], vx[1], vx[2] );
glEnd();
}
// retrieve feedback
GLuint hits = glRenderMode( GL_RENDER );
// parse hits
if ( (int)hits != -1 ) {
GLfloat *ptr = (GLfloat*)feedbackBuffer;
GLfloat x,y,z;
GLint code,id;
int counter =0;
for (ii=0;ii<(int)hits;ii++) {
code = (int)*ptr;
if ( code == GL_PASS_THROUGH_TOKEN ) {
id = (int)*(ptr+1);
ptr+=2;
ii+=1;
continue;
}
if ( code == GL_POINT_TOKEN ) {
x = *(ptr+1);
y = *(ptr+2);
z = *(ptr+3);
int xx = x - floor(x) > 0.5 ? int(floor(x))+1 : int(floor(x));
int yy = y - floor(y) > 0.5 ? int(floor(y))+1 : int(floor(y));
if ( xx < width - 1 && xx > 1 && \
yy < height - 1 && yy > 1 ) {
float thresh = MAX( MAX( MAX( pixels[yy*width+xx],
pixels[(yy-1)*width+xx]),
pixels[yy*width+xx-1] ),
pixels[(yy-1)*width+xx-1] );
if ( z <= thresh + 1E-5 ) {
vertexIndices.push_back( id );
counter++;
}
}
ptr += 4;
ii += 3;
continue;
}
}
dbg(DBG_INFO,"%d visible points (%d model points)\n", counter, model->NVertices());
}
// free memory
delete ( feedbackBuffer );
delete ( pixels );
}