bool FrustumCuller::isCullable(const Chunk& chunk, const RenderData& data) {
// Calculate the MVP matrix
dmat4 modelTransform = chunk.owner()->modelTransform();
dmat4 viewTransform = dmat4(data.camera.combinedViewMatrix());
dmat4 modelViewProjectionTransform = dmat4(data.camera.projectionMatrix())
* viewTransform * modelTransform;
const std::vector<glm::dvec4>& corners = chunk.getBoundingPolyhedronCorners();
// Create a bounding box that fits the patch corners
AABB3 bounds; // in screen space
std::vector<vec4> clippingSpaceCorners(8);
for (size_t i = 0; i < 8; i++) {
dvec4 cornerClippingSpace = modelViewProjectionTransform * corners[i];
clippingSpaceCorners[i] = cornerClippingSpace;
dvec3 cornerScreenSpace = (1.0f / glm::abs(cornerClippingSpace.w)) * cornerClippingSpace;
bounds.expand(cornerScreenSpace);
}
return !_viewFrustum.intersects(bounds);
}
Transform::Transform()
{
m = dmat4();
}
void NewXZRotExperimentHCI::update(const std::vector<MinVR::EventRef> &events){
//later to be pass into closestTouchPair function
glm::dvec3 pos1;
glm::dvec3 pos2;
double minDistance = DBL_MAX;
MinVR::TimeStamp timestamp;
//boolean flags
bool xzTrans = false;
glm::dmat4 xzTransMat = dmat4(0.0);
bool yTrans = false;
glm::dmat4 yTransMat = dmat4(0.0);
bool yRotScale = false;
numTouchForHand1 = 0;
numTouchForHand2 = 0;
//only update the map and other variables first
for(int p = 0; p < events.size(); p++) {
timestamp = events[p]->getTimestamp();
std::string name = events[p]->getName();
int id = events[p]->getId();
if (boost::algorithm::starts_with(name, "TUIO_Cursor_up")) {
//delete the cursor down associated with this up event
std::map<int, TouchDataRef>::iterator it = registeredTouchData.find(id);
if (it != registeredTouchData.end()) { // if id is found
registeredTouchData.erase(it); //erase value associate with that it
//std::cout << "UP" <<std::endl;
} else {
std::cout<<"ERROR: Received touch up for a cursor not in the registered touch data!"<<std::endl;
std::cout << events[p]->toString() << std::endl;
for (auto iter = registeredTouchData.begin(); iter != registeredTouchData.end(); iter++) {
std::cout << "\t" << iter->second->toString() << std::endl;
}
}
} else if (boost::algorithm::starts_with(name, "TUIO_Cursor_down")) {
// always add a new one on DOWN
glm::dvec3 roomCoord = convertScreenToRoomCoordinates(events[p]->get2DData());
TouchDataRef datum(new TouchData(events[p], roomCoord));
registeredTouchData.insert(std::pair<int, TouchDataRef>(id, datum));
//std::cout << "DOWN " << glm::to_string(events[p]->get2DData()) <<std::endl;
} else if (boost::algorithm::starts_with(name, "TUIO_CursorMove")) {
//update the map with the move event
// if the corresponding id was down, make it a move event
std::map<int, TouchDataRef>::iterator it = registeredTouchData.find(id);
//std::cout << "Move " << events[p]->getId() <<std::endl;
if (it != registeredTouchData.end()) { // if id is found
glm::dvec2 screenCoord (events[p]->get4DData());
glm::dvec3 roomCoord = convertScreenToRoomCoordinates(glm::dvec2(events[p]->get4DData()));
// update map
it->second->setCurrentEvent(events[p]);
it->second->setCurrRoomPos(roomCoord);
}
}
// end of TUIO events
// Update hand positions
if (name == "Hand_Tracker1") {
//std::cout << "Inside hand tracking 1 event (xz) " << std::endl;
//only enter one time to init prevHandPos1
if (prevHandPos1.y == -1.0) {
glm::dvec3 currHandPos1 (events[p]->getCoordinateFrameData()[3]);
prevHandPos1 = currHandPos1;
initRoomPos = true;
} else {
//std::cout << "updating hand 1 curr and prev position " << std::endl;
prevHandPos1 = currHandPos1;
currHandPos1 = glm::dvec3(events[p]->getCoordinateFrameData()[3]);
}
}
//std::cout<<"currHandPos1: "<<glm::to_string(currHandPos1)<<std::endl;
//std::cout<<"prevHandPos1: "<<glm::to_string(prevHandPos1)<<std::endl;
if(name == "Hand_Tracker2") {
//std::cout << "Inside hand tracking 2 event (xz) " << std::endl;
if (prevHandPos2.y == -1.0) {
glm::dvec3 currHandPos2 (events[p]->getCoordinateFrameData()[3]);
prevHandPos2 = currHandPos2;
} else {
//std::cout << "updating hand 2 curr and prev position " << std::endl;
prevHandPos2 = currHandPos2;
currHandPos2 = glm::dvec3(events[p]->getCoordinateFrameData()[3]);
}
}
} // end of data-updating for loop
// give feedback object the touch data so
//it can draw touch positions
feedback->registeredTouchData = registeredTouchData;
// At this point, the touch data should be updated, and hand positions
std::map<int, TouchDataRef>::iterator iter;
for (iter = registeredTouchData.begin(); iter != registeredTouchData.end(); iter++) {
glm::dvec3 currRoomPos (iter->second->getCurrRoomPos());
bool belongsToHand1 = (glm::length(currHandPos1 - currRoomPos) < glm::length(currHandPos2 - currRoomPos));
if (belongsToHand1) {
numTouchForHand1++;
if(iter->second->getBelongTo() == -1){
iter->second->setBelongTo(1);
}
}
else { // belongs to hand 2
numTouchForHand2++;
if(iter->second->getBelongTo() == -1){
iter->second->setBelongTo(2);
}
}
} // end touch enumeration
//from TUIO move
//std::cout << "Touch size: " << registeredTouchData.size() << std::endl;
//find closest pair of TouchPoints
if (registeredTouchData.size() > 1) {
closestTouchPair(registeredTouchData , pos1, pos2, minDistance);
//std::cout << "Min distance: " << minDistance << std::endl;
}
if (minDistance < 0.06 && currHandPos1 != prevHandPos1) {
xzRotFlag = true;
//std::cout << "Inside XZRot Mode" << std::endl;
}
if (xzRotFlag && liftedFingers) { // might have to be xzRotFlag and not any other flag
feedback->displayText = "rotating";
if(initRoomPos){
// pos1 and pos2 are where you put your fingers down. We're finding the centroid
//to calculate the box boundary for xzRotMode
initRoomTouchCentre = 0.5*(pos1 + pos2);
initRoomPos = false;
}
// try to change around center of origin
glm::dvec3 centOfRot (glm::dvec3((glm::column(cFrameMgr->getVirtualToRoomSpaceFrame(), 3))));
//calculate the current handToTouch vector
if(registeredTouchData.size() > 1 && !centerRotMode) {
roomTouchCentre = 0.5*(pos1 + pos2);
}
//std::cout << "Touch Center: " << glm::to_string(roomTouchCentre) << std::endl;
//Should not be equal in XZRotMode but just in case.
//for choosing the hand that rotates
/*std::cout<<"currHandPos1: "<<glm::to_string(currHandPos1)<<std::endl;*/
if (numTouchForHand1 >= numTouchForHand2) {
//std::cout << "Using right hand: " << std::endl;
if (roomTouchCentre - currHandPos1 != glm::dvec3(0.0)) {//zero guard
currHandToTouch = roomTouchCentre - currHandPos1;
}
if (roomTouchCentre - prevHandPos1 != glm::dvec3(0.0)) {//zero guard
prevHandToTouch = roomTouchCentre - prevHandPos1;
}
} else {
//std::cout << "Using Left hand: " << std::endl;
if (roomTouchCentre - currHandPos2 != glm::dvec3(0.0)) { //zero guard
currHandToTouch = roomTouchCentre - currHandPos2;
}
if (roomTouchCentre - prevHandPos2 != glm::dvec3(0.0)) { //zero guard
prevHandToTouch = roomTouchCentre - prevHandPos2;
}
}
//set up the 2 vertices for a square boundry for the gesture
glm::dvec3 upRight = glm::dvec3(initRoomTouchCentre.x+0.2, 0.0, initRoomTouchCentre.z+0.2);
glm::dvec3 lowLeft = glm::dvec3(initRoomTouchCentre.x-0.2, 0.0, initRoomTouchCentre.z-0.2);
//this if-else block for setting xzRotFlag,
//also for grabbing xzCentOfRot
if(registeredTouchData.size() == 0) { //if no touch on screen then automatically exit the xzrot mode
xzRotFlag = false;
initRoomPos = true;
liftedFingers = true;
feedback->displayText = "";
feedback->centOfRot.x = DBL_MAX;
//std::cout<<"no touchyyy so I quit"<<std::endl;
}
else { //if there are touch(s) then check if the touch is in bound of the rectangle
bool setxzRotFlag = true;
std::map<int, TouchDataRef>::iterator iter;
int countFingers = 0;
for (iter = registeredTouchData.begin(); iter != registeredTouchData.end(); iter++) {
// not exactly sure why roomPos. > upRight.z , I think it should be <. but that doesn't work
if(!(iter->second->getCurrRoomPos().x > upRight.x || iter->second->getCurrRoomPos().z > upRight.z ||iter->second->getCurrRoomPos().x < lowLeft.x ||iter->second->getCurrRoomPos().z < lowLeft.z)){ //you are in the box
//std::cout << "fingers in bound so STILL IN XZRot Mode" << std::endl;
setxzRotFlag = false;
countFingers += 1;
} //else{ // touch point not in box, assume as center of rotation
// centOfRot = iter->second->getCurrRoomPos();
// centerRotMode = true;
// //std::cout << "Cent of Rot set" << std::endl;
// feedback->centOfRot = centOfRot;
//}
// only tries to change the xzRotFlag at the end of the data in the map
if(iter == std::prev(registeredTouchData.end(),1) && setxzRotFlag) {
xzRotFlag = false;
initRoomPos = true;
feedback->displayText = "";
feedback->centOfRot.x = DBL_MAX;
//std::cout << "all fingers went out of bound so Out of XZRot Mode" << std::endl;
// found bug where person just drags their fingers across the table, and it reinitiates xzRotMode
liftedFingers = false;
}
} // end for loop over registeredTouchData
if(countFingers == registeredTouchData.size()){//all fingers in bound
centerRotMode = false;
feedback->centOfRot.x = DBL_MAX;
}
} // end if/else block
//std::cout<<"currHandToTouch: "<<glm::to_string(currHandToTouch)<<std::endl;
//std::cout<<"prevHandToTouch: "<<glm::to_string(prevHandToTouch)<<std::endl;
//std::cout<<"dot product of them: "<< glm::to_string(glm::dot(glm::normalize(currHandToTouch), glm::normalize(prevHandToTouch))) << std::endl;
//std::cout<<"what we clamping: "<<glm::clamp(glm::dot(currHandToTouch, prevHandToTouch),-1.0,1.0)<<std::endl;
double alpha = glm::acos(glm::clamp(glm::dot(glm::normalize(currHandToTouch), glm::normalize(prevHandToTouch)),-1.0,1.0)); // from 0 to pi
//std::cout<<"alpha: " << alpha << std::endl;
// get cross prod
glm::dvec3 cross = glm::normalize(glm::cross(currHandToTouch, prevHandToTouch));
//std::cout<<"cross: "<<glm::to_string(cross)<<std::endl;
glm::dvec3 projCross = glm::normalize(glm::dvec3(cross.x, 0.0, cross.z)); // projection
//std::cout<<"projcross: "<<glm::to_string(projCross)<<std::endl;
// project cross prod onto the screen, get a length
double lengthOfProjection = glm::dot(cross, projCross);
//std::cout<<"lengthOfProjection: "<<glm::to_string(lengthOfProjection)<<std::endl;
// projected cross prod
//glm::dvec3 projectedCrossProd = lengthOfProjection * normProjCross;
//std::cout<<"lengthOfProjection: "<<lengthOfProjection<<std::endl;
//std::cout<<"alpha in degree before times lengthofprojection: "<<glm::degrees(alpha)<<std::endl;
alpha = alpha * lengthOfProjection;
//std::cout<<"alpha in degree after: "<<glm::degrees(alpha)<<std::endl;
//std::cout<<"normProjCross: "<<glm::to_string(normProjCross)<<std::endl;
glm::dmat4 XZRotMat = glm::rotate(glm::dmat4(1.0), glm::degrees(alpha) /* * 2.0 */, glm::normalize(projCross));
// have translations when we have a touch point not in the bounding box
// translate to origin
glm::dmat4 transMat(glm::translate(glm::dmat4(1.0), -1.0*centOfRot));
//translate back
glm::dmat4 transBack(glm::translate(glm::dmat4(1.0), centOfRot));
//put it into the matrix stack
//std::cout<<"XZRotMat: "<<glm::to_string(XZRotMat) <<std::endl;
cFrameMgr->setRoomToVirtualSpaceFrame(cFrameMgr->getRoomToVirtualSpaceFrame() * transBack * XZRotMat * transMat);
} // end xzRot Gesture
if(registeredTouchData.size() == 0) {
feedback->displayText = "";
liftedFingers = true;
}
//this is bret's commented out line
//updateHandPos(events);
}
