void RayScreenMenuTool::display(GLContextData&) const
{
if(insideWidget||widgetActive||isActive())
{
/* Draw the menu selection ray: */
glPushAttrib(GL_ENABLE_BIT|GL_LINE_BIT);
glDisable(GL_LIGHTING);
glColor3f(1.0f,0.0f,0.0f);
glLineWidth(3.0f);
glBegin(GL_LINES);
glVertex(selectionRay.getOrigin());
glVertex(selectionRay(getDisplaySize()*Scalar(5)));
glEnd();
glPopAttrib();
}
}
void RayScreenMenuTool::frame(void)
{
/* Update the selection ray: */
selectionRay=calcSelectionRay();
if(factory->interactWithWidgets)
insideWidget=getWidgetManager()->findPrimaryWidget(selectionRay)!=0;
if(widgetActive)
{
/* Deliver the event: */
GLMotif::Event event(true);
event.setWorldLocation(selectionRay);
getWidgetManager()->pointerMotion(event);
if(dragging)
{
/* Find the closest intersection with any screen: */
std::pair<VRScreen*,Scalar> si=findScreen(selectionRay);
if(si.first!=0)
{
/* Update the dragged widget's transformation: */
NavTrackerState current=NavTrackerState::translateFromOriginTo(selectionRay(si.second));
current*=preScale;
getWidgetManager()->setPrimaryWidgetTransformation(draggedWidget,GLMotif::WidgetManager::Transformation(current));
}
}
}
else if(isActive())
{
/* Update the selection ray: */
selectionRay=calcSelectionRay();
/* Deliver the event: */
GLMotif::Event event(true);
event.setWorldLocation(selectionRay);
getWidgetManager()->pointerMotion(event);
}
}
void DaisyWheelTool::display(GLContextData&) const
{
if(active)
{
/* Save OpenGL state: */
glPushAttrib(GL_ENABLE_BIT|GL_LINE_BIT);
/* Draw the daisy wheel: */
glPushMatrix();
glMultMatrix(wheelTransform);
/* Set up OpenGL state: */
glDisable(GL_LIGHTING);
glBegin(GL_QUADS);
Scalar angle0=Scalar(0);
Scalar angleDiff=zoomAngle-angle0;
if(angleDiff<-Math::Constants<Scalar>::pi)
angleDiff+=Scalar(2)*Math::Constants<Scalar>::pi;
else if(angleDiff>Math::Constants<Scalar>::pi)
angleDiff-=Scalar(2)*Math::Constants<Scalar>::pi;
Scalar weight=Math::abs(angleDiff)/Math::Constants<Scalar>::pi;
angleDiff*=Math::pow(weight,Scalar(1)-zoomStrength)/weight;
Scalar wAngle0=zoomAngle-angleDiff;
Scalar c0=Math::cos(wAngle0);
Scalar s0=Math::sin(wAngle0);
for(int i=0;i<numCharacters;++i)
{
Scalar angle1=angle0+dynamicWeights[i]*Scalar(2)*Math::Constants<Scalar>::pi/dynamicWeightSum;
angleDiff=zoomAngle-angle1;
if(angleDiff<-Math::Constants<Scalar>::pi)
angleDiff+=Scalar(2)*Math::Constants<Scalar>::pi;
else if(angleDiff>Math::Constants<Scalar>::pi)
angleDiff-=Scalar(2)*Math::Constants<Scalar>::pi;
weight=Math::abs(angleDiff)/Math::Constants<Scalar>::pi;
angleDiff*=Math::pow(weight,Scalar(1)-zoomStrength)/weight;
Scalar wAngle1=zoomAngle-angleDiff;
Scalar c1=Math::cos(wAngle1);
Scalar s1=Math::sin(wAngle1);
if(i%2==0)
glColor3f(1.0f,0.5f,0.5f);
else
glColor3f(0.0f,0.5f,1.0f);
glVertex3f(s0*factory->innerRadius,0.0f,c0*factory->innerRadius);
glVertex3f(s1*factory->innerRadius,0.0f,c1*factory->innerRadius);
glVertex3f(s1*factory->outerRadius,0.0f,c1*factory->outerRadius);
glVertex3f(s0*factory->outerRadius,0.0f,c0*factory->outerRadius);
angle0=angle1;
wAngle0=wAngle1;
c0=c1;
s0=s1;
}
glEnd();
glPopMatrix();
/* Draw the menu selection ray: */
glLineWidth(3.0f);
glColor3f(1.0f,0.0f,0.0f);
glBegin(GL_LINES);
glVertex(selectionRay.getOrigin());
glVertex(selectionRay(getDisplaySize()*Scalar(5)));
glEnd();
/* Restore OpenGL state: */
glPopAttrib();
}
}
