void UnitDragger::glRenderAction(GLContextData& contextData) const
{
/* Get a pointer to the context data item: */
DataItem* dataItem=contextData.retrieveDataItem<DataItem>(this);
if(draggingMode==INFLUENCE_SPHERE)
{
/* Translate coordinate system to dragger's position and orientation: */
glPushMatrix();
glMultMatrix(influenceSphereTransform);
glScaled(influenceSphereRadius,influenceSphereRadius,influenceSphereRadius);
glCallList(dataItem->displayListId);
glPopMatrix();
}
}
void ViewpointFileNavigationTool::display(GLContextData& contextData) const
{
if(!viewpoints.empty()&&showKeyframes)
{
/* Display the next keyframe viewpoint in navigational coordinates: */
glPushAttrib(GL_ENABLE_BIT|GL_LINE_BIT);
glDisable(GL_LIGHTING);
glLineWidth(3.0f);
glPushMatrix();
glMultMatrix(getNavigationTransformation());
glBegin(GL_LINES);
glColor3f(1.0f,0.0f,0.0f);
glVertex(viewpoints[nextViewpointIndex].center);
glVertex(viewpoints[nextViewpointIndex].center+viewpoints[nextViewpointIndex].forward*Math::exp(viewpoints[nextViewpointIndex].size)*Scalar(0.25));
glColor3f(0.0f,1.0f,0.0f);
glVertex(viewpoints[nextViewpointIndex].center);
glVertex(viewpoints[nextViewpointIndex].center+viewpoints[nextViewpointIndex].up*Math::exp(viewpoints[nextViewpointIndex].size)*Scalar(0.25));
glEnd();
glPopMatrix();
glPopAttrib();
}
}
void VruiDemo::display(GLContextData& contextData) const
{
Vrui::Point displayCenter=Vrui::getDisplayCenter();
Vrui::Scalar inchScale=Vrui::getInchFactor();
/* Set up OpenGL state: */
GLboolean lightingEnabled=glIsEnabled(GL_LIGHTING);
if(lightingEnabled)
glDisable(GL_LIGHTING);
GLfloat lineWidth;
glGetFloatv(GL_LINE_WIDTH,&lineWidth);
glLineWidth(1.0f);
/* Draw a 10" wireframe cube in the middle of the environment: */
glPushMatrix();
glTranslate(displayCenter-Vrui::Point::origin);
glScale(inchScale,inchScale,inchScale);
glColor(modelColor);
glBegin(GL_LINES);
glVertex(-5.0f,-5.0f,-5.0f);
glVertex( 5.0f,-5.0f,-5.0f);
glVertex(-5.0f, 5.0f,-5.0f);
glVertex( 5.0f, 5.0f,-5.0f);
glVertex(-5.0f, 5.0f, 5.0f);
glVertex( 5.0f, 5.0f, 5.0f);
glVertex(-5.0f,-5.0f, 5.0f);
glVertex( 5.0f,-5.0f, 5.0f);
glVertex(-5.0f,-5.0f,-5.0f);
glVertex(-5.0f, 5.0f,-5.0f);
glVertex( 5.0f,-5.0f,-5.0f);
glVertex( 5.0f, 5.0f,-5.0f);
glVertex( 5.0f,-5.0f, 5.0f);
glVertex( 5.0f, 5.0f, 5.0f);
glVertex(-5.0f,-5.0f, 5.0f);
glVertex(-5.0f, 5.0f, 5.0f);
glVertex(-5.0f,-5.0f,-5.0f);
glVertex(-5.0f,-5.0f, 5.0f);
glVertex( 5.0f,-5.0f,-5.0f);
glVertex( 5.0f,-5.0f, 5.0f);
glVertex( 5.0f, 5.0f,-5.0f);
glVertex( 5.0f, 5.0f, 5.0f);
glVertex(-5.0f, 5.0f,-5.0f);
glVertex(-5.0f, 5.0f, 5.0f);
glEnd();
glPopMatrix();
/* Draw coordinate axes for each input device: */
int numDevices=Vrui::getNumInputDevices();
for(int i=0;i<numDevices;++i)
{
Vrui::InputDevice* id=Vrui::getInputDevice(i);
if(id->is6DOFDevice())
{
glPushMatrix();
glMultMatrix(id->getTransformation());
glScale(inchScale,inchScale,inchScale);
glBegin(GL_LINES);
glColor3f(1.0f,0.0f,0.0f);
glVertex3f(-5.0f,0.0f,0.0f);
glVertex3f( 5.0f,0.0f,0.0f);
glColor3f(0.0f,1.0f,0.0f);
glVertex3f(0.0f,-5.0f,0.0f);
glVertex3f(0.0f, 5.0f,0.0f);
glColor3f(0.0f,0.0f,1.0f);
glVertex3f(0.0f,0.0f,-5.0f);
glVertex3f(0.0f,0.0f, 5.0f);
glEnd();
glPopMatrix();
}
}
/* This only works in the CAVE - draw a grid on the "front wall" to calibrate external cameras: */
glBegin(GL_LINES);
glColor3f(1.0f,1.0f,0.0f);
for(int y=0;y<=8;++y)
{
glVertex(-60.0f,-36.0f,float(y)*12.0f);
glVertex(60.0f,-36.0f,float(y)*12.0f);
}
for(int x=0;x<=10;++x)
{
glVertex(float(x)*12.0f-60.0f,-36.0f,0.0f);
glVertex(float(x)*12.0f-60.0f,-36.0f,96.0f);
}
glEnd();
/* Restore OpenGL state: */
glLineWidth(lineWidth);
if(lightingEnabled)
glEnable(GL_LIGHTING);
}
