bool GeometryRenderer::render()
{
if (!m_GeometryArray) {
return false;
}
bool ret1;
glEnable(GL_LIGHTING);
// determine the max dimension
double aspectX,aspectY,aspectZ;
double centerX,centerY,centerZ;
aspectX = m_Extent->getXMax() - m_Extent->getXMin();
aspectY = m_Extent->getYMax() - m_Extent->getYMin();
aspectZ = m_Extent->getZMax() - m_Extent->getZMin();
double max = (aspectX>aspectY?aspectX:aspectY);
max = (max>aspectZ?max:aspectZ);
// compute the center of the space
centerX = (m_Extent->getXMax() + m_Extent->getXMin()) / 2.0;
centerY = (m_Extent->getYMax() + m_Extent->getYMin()) / 2.0;
centerZ = (m_Extent->getZMax() + m_Extent->getZMin()) / 2.0;
aspectX/=max;
aspectY/=max;
aspectZ/=max;
setClipPlanes(aspectX, aspectY, aspectZ);
Matrix matrix;
// center
matrix.preMultiplication(Matrix::translation(
(float)(-centerX),
(float)(-centerY),
(float)(-centerZ)
));
// scale to aspect ratio
matrix.preMultiplication(Matrix::scale(
(float)(1.0/max),
(float)(1.0/max),
(float)(1.0/max)
));
glMatrixMode(GL_MODELVIEW);
glPushMatrix();
glMultMatrixf(matrix.getMatrix());
ret1 = m_GeometryArray->render();
glPopMatrix();
disableClipPlanes();
return ret1;
}
void Terrain::resetInteractionStates()
{
state = 0;
//Reset height-selecting states
setHeight = false;
enableHeightVis = false;
//Reset clippling-Plane information
enableFirstClip = false;
enableSecondClip = false;
disableClipPlanes();
firstClipY = 0.0f;
secondClipY = 0.0f;
setFirstClip = false;
setSecondClip = false;
enableSecondClipVis = false;
enableFirstClipVis = false;
clipPlaneFirstVisOffset = -0.0001f; //Ensures rendering of clipPlane visualizations at start
clipPlaneSecondVisOffset = 0.0001f;
//Reset endpoint-drawing states
settingStartPath = false;
settingEndPath = false;
//Reset direct freehand drawing states
drawingPath = false;
//Reset ROI drawing states
settingRoi = false;
settingRoiRadius = false;
//Reset POI drawing states
settingPoi = false;
}
void Terrain::handleHeightFiltering(int &state)
{
const int RESET = 0;
const int PLACING_FIRST = 1;
const int PLACING_SECOND = 2;
const int FINISH = 3;
switch(state){
case RESET: //Resets start and end positions of path
enableFirstClip = false;
enableSecondClip = false;
disableClipPlanes();
firstClipY = 0.0f;
secondClipY = 0.0f;
if(pinch && currDelay == 0)
{
state = PLACING_FIRST;
currDelay = 40;
}
break;
case PLACING_FIRST: //Placing the bottom clip plane
//enableBotClip = true;
enableFirstClipVis = true;
setFirstClip = true;
//clipPlaneFirstVisOffset = 0.0001f;
if(pinch && currDelay == 0){
state = PLACING_SECOND;
currDelay = 40;
}
break;
case PLACING_SECOND: //Placing the top clip plane
//enableTopClip = true;
enableSecondClipVis = true;
setFirstClip = false;
setSecondClip = true;
if(firstClipY > secondClipY){
clipPlaneFirstVisOffset = -0.0001f;
clipPlaneSecondVisOffset = 0.0001f;
}
else{
clipPlaneFirstVisOffset = 0.0001f;
clipPlaneSecondVisOffset = -0.0001f;
}
if((pinch && currDelay == 0) && !((firstClipY > maxDisplayY && secondClipY > maxDisplayY) || (firstClipY < minDisplayY && secondClipY < minDisplayY))){
//((firstClipY < maxDisplayY && firstClipY > minDisplayY) || (secondClipY < maxDisplayY && secondClipY > minDisplayY)) && ){
state = FINISH;
currDelay = 40;
}
break;
case FINISH: //Start and End have both been placed, pinch to go back to starting state
setSecondClip = false;
enableFirstClip = true;
enableSecondClip = true;
enableSecondClipVis = false;
enableFirstClipVis = false;
if(pinch && currDelay == 0)
{
state = RESET;
clipPlaneFirstVisOffset = -0.0001f; //Ensures rendering of clipPlane visualizations
clipPlaneSecondVisOffset = 0.0001f;
currDelay = 40;
}
break;
}
}
