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slice.cpp
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slice.cpp
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#include "slice.h"
Slice::Slice(QObject *parent) :
QObject(parent)
{
}
void Slice::fillTriLayer(QHash<QString, Face*> faces){
QHash<QString, Face*>::iterator i;
double zMax=0;
for(i = faces.begin(); i != faces.end(); ++i){
if(zMax<i.value()->getMaxZ()->z())
zMax=i.value()->getMaxZ()->z();
}
int layersNum=(int)ceil(zMax/layerHeight);
qDebug() << "Max z: "<< zMax << "Number of layers: "<<layersNum;
//create list
for(int j=0; j<layersNum+1; j++){
this->triLayer.append(new QList<Face*>);
this->edgeLayer.append(new QList< QList<HalfEdge*> *>);
this->pointLayer.append(new QList< QList<QVector3D> *>);
}
double tempZ;
for(i = faces.begin(); i != faces.end(); ++i){
tempZ=(int)((i.value()->getMinZ()->z()/layerHeight)+1)*layerHeight;
while(tempZ<i.value()->getMaxZ()->z()){
this->triLayer.at((int)ceil(tempZ/layerHeight))->append(i.value());
tempZ+=this->layerHeight;
}
}
fillEdgeLayer();
fillPointLayer();
//fillPolygonLayer();
}
//fill list of edges crossing plane on some z height
void Slice::fillEdgeLayer(){
QList<Face*> currentLayer;
Face* currentFace;
HalfEdge* currentEdge;
for(int i=0; i<this->triLayer.size(); i++){
currentLayer=*this->triLayer.at(i);
//take first face from list
if(currentLayer.size()>0){
currentFace=currentLayer.takeFirst();
currentEdge=currentFace->getEdgesCrossingPlane(this->layerHeight*i).at(0);
//create list for firts edge loop
this->edgeLayer.at(i)->append(new QList<HalfEdge*>);
this->pointLayer.at(i)->append(new QList<QVector3D>);
this->edgeLayer.at(i)->last()->append(currentEdge);
//while all faces are processed
while(currentLayer.size()>0){
// //take his twin
currentEdge=currentEdge->getTwin();
if(currentEdge->getFaces().size()>0){
currentFace=currentEdge->getFaces().at(0);
currentEdge=currentFace->getEdgesCrossingPlane(this->layerHeight*i,currentEdge).first();
this->edgeLayer.at(i)->last()->append(currentEdge);
}
if(currentLayer.contains(currentFace)){
currentLayer.removeAt(currentLayer.indexOf(currentFace));
}
else{
if(!currentLayer.isEmpty()){
currentFace=currentLayer.takeFirst();
currentEdge=currentFace->getEdgesCrossingPlane(this->layerHeight*i).at(0);
this->edgeLayer.at(i)->append(new QList<HalfEdge*>);
this->pointLayer.at(i)->append(new QList<QVector3D>);
}
}
}
}
}
}
//find point of polygon
void Slice::fillPointLayer(){
//for each layer
for(int i=0; i<this->edgeLayer.size(); i++){
//and each loop
for(int j=0; j<this->edgeLayer.at(i)->size(); j++){
for(int k=0; k<this->edgeLayer.at(i)->at(j)->size(); k++){
this->pointLayer.at(i)->at(j)->append(linePLaneIntersection(*this->edgeLayer.at(i)->at(j)->at(k),QVector3D(0,0,this->layerHeight*i), QVector3D(0,0,1)));
}
}
}
}
void Slice::fillPolygonLayer(){
// ClipperLib::Polygon p;
// qDebug() << "loop size"<< this->pointLayer.at(1)->at(0)->size();
// for(int i=0; i<this->pointLayer.at(10)->at(0)->size(); i++){
// p.push_back(ClipperLib::IntPoint((int)(this->pointLayer.at(10)->at(0)->at(i).x()*1000),(int)(this->pointLayer.at(10)->at(0)->at(i).y()*1000)));
// GLdouble * newVertex;
// newVertex = (GLdouble *)malloc(3*sizeof*newVertex);
// newVertex[0] = this->pointLayer.at(10)->at(0)->at(i).x();
// newVertex[1] = this->pointLayer.at(10)->at(0)->at(i).y();
// newVertex[2] = this->pointLayer.at(10)->at(0)->at(i).z();
// this->vectors.append(newVertex);
// }
// Polygons layer;
// layer.push_back(p);
// this->polygonLayer.append(layer);
}
QVector3D Slice::linePLaneIntersection(HalfEdge edge, QVector3D planeOrigin, QVector3D planeNormal){
QVector3D u=edge.getStart()->toVector3D()-edge.getStop()->toVector3D();
QVector3D w=edge.getStop()->toVector3D()-planeOrigin;
QVector3D normal=planeNormal;
float d=QVector3D::dotProduct(normal,u);
float n=-QVector3D::dotProduct(normal,w);
//line is parallel to plane
if(fabs(d)<0.00000001){
if(n==0){
qDebug() << "line is on plane";
return QVector3D();
}
else{
qDebug() << "no intersection";
return QVector3D();
}
}
//line croses plane
float sI = n/d;
if(sI<0 || sI>1){
qDebug() << "no intersection";
return QVector3D();
}
return edge.getStop()->toVector3D() + u*sI;
}
void Slice::draw(int layer){
GLfloat green[4]={0.0,1.0,0.0,1.0};
GLfloat blue[4]={0.0,0.0,1.0,1.0};
GLfloat fCurrentColor[4];
// Get the current color
glGetFloatv(GL_CURRENT_COLOR, fCurrentColor);
if(layer<this->triLayer.size()){
// //draw faces
// for(int i=0; i<this->triLayer.at(layer)->size(); i++){
// glBegin(GL_TRIANGLES);
// glNormal3f(this->triLayer.at(layer)->at(i)->getNormal()->x(),this->triLayer.at(layer)->at(i)->getNormal()->y(),this->triLayer.at(layer)->at(i)->getNormal()->z());
// glVertex3f(this->triLayer.at(layer)->at(i)->getEdge1()->getStart()->x(), this->triLayer.at(layer)->at(i)->getEdge1()->getStart()->y(), this->triLayer.at(layer)->at(i)->getEdge1()->getStart()->z());
// glVertex3f(this->triLayer.at(layer)->at(i)->getEdge2()->getStart()->x(), this->triLayer.at(layer)->at(i)->getEdge2()->getStart()->y(), this->triLayer.at(layer)->at(i)->getEdge2()->getStart()->z());
// glVertex3f(this->triLayer.at(layer)->at(i)->getEdge3()->getStart()->x(), this->triLayer.at(layer)->at(i)->getEdge3()->getStart()->y(), this->triLayer.at(layer)->at(i)->getEdge3()->getStart()->z());
// glEnd( );
// }
// //draw edges
glDisable(GL_LIGHTING);
// glColor4fv(green);
// glLineWidth(1.0);
glDepthMask(false);
// glBegin(GL_LINES);
// for(int i=0; i<this->edgeLayer.at(layer)->size(); i++){
// for(int j=0; j<this->edgeLayer.at(layer)->at(i)->size(); j++){
// glVertex3f(this->edgeLayer.at(layer)->at(i)->at(j)->getStart()->x(), this->edgeLayer.at(layer)->at(i)->at(j)->getStart()->y(), this->edgeLayer.at(layer)->at(i)->at(j)->getStart()->z());
// glVertex3f(this->edgeLayer.at(layer)->at(i)->at(j)->getStop()->x(), this->edgeLayer.at(layer)->at(i)->at(j)->getStop()->y(), this->edgeLayer.at(layer)->at(i)->at(j)->getStop()->z());
// }
// }
// glEnd( );
//draw intersection points
//glColor4fv(blue);
glPointSize(5.0f);
glBegin(GL_POINTS);
for(int i=0; i<this->pointLayer.at(layer)->size(); i++){
for(int j=0; j<this->pointLayer.at(layer)->at(i)->size(); j++){
qDebug() << (float)j/(float)this->pointLayer.at(layer)->at(i)->size();
glColor4f(0.0,(float)j/(float)this->pointLayer.at(layer)->at(i)->size(),0.0,1.0);
glVertex3f(this->pointLayer.at(layer)->at(i)->at(j).x(), this->pointLayer.at(layer)->at(i)->at(j).y(), this->pointLayer.at(layer)->at(i)->at(j).z() );
}
}
glEnd();
glDepthMask(true);
glEnable(GL_LIGHTING);
// drawPolygon(layer);
}
glColor4fv(fCurrentColor);
}
void Slice::drawPolygon(int layer){
for(int i=0; i<this->pointLayer.at(layer)->size(); i++){
glBegin(GL_POLYGON);
for(int j=0; j<this->pointLayer.at(layer)->at(i)->size(); j++){
glVertex3f(this->pointLayer.at(layer)->at(i)->at(j).x(), this->pointLayer.at(layer)->at(i)->at(j).y(), this->pointLayer.at(layer)->at(i)->at(j).z() );
}
glEnd();
}
}