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/*
* Viewer.cpp
*
* Created on: Aug 26, 2014
* Author: dsalinas
*/
#include "Viewer.h"
#include "utils/UI_utils.h"
Viewer::Viewer(QWidget* parent): QGLViewer(QGLFormat(QGL::SampleBuffers),parent),instructor(0),theta(0),phi(0){
}
void
Viewer::set_instructor(Viewer_instructor* instructor_){
instructor = instructor_;
}
void
Viewer::show_entire_scene(){
this->showEntireScene();
}
void
Viewer::draw(){
instructor->give_instructions();
}
void
Viewer::set_bounding_box(const Point_3 & lower_left,const Point_3 & upper_right){
this->camera()->setSceneBoundingBox(
qglviewer::Vec(lower_left[0], lower_left[1], lower_left[2]),
qglviewer::Vec(upper_right[0], upper_right[1], upper_right[2])
);
}
void
Viewer::update_GL(){
this->updateGL();
}
void
Viewer::init_scene(){
this->setBackgroundColor(Qt::white);
::glEnable(GL_LINE_SMOOTH);
init_light();
}
void
Viewer::init_light(){
::glLightModeli(GL_LIGHT_MODEL_TWO_SIDE, GL_TRUE);
}
void
Viewer::set_light(){
if(theta>=0 && phi >=0){
const GLfloat pos[4] = {(float)(sin(phi)*cos(theta)),(float)(sin(phi)*sin(theta)),(float)(cos(phi)),0.};
glLightfv(GL_LIGHT0, GL_POSITION, pos);
}
}
void
Viewer::set_light_direction(double theta_,double phi_){
theta = theta_;
phi = phi_;
}
/**
* set the light in the direction of the observer
*/
void
Viewer::set_light_direction(){
theta = -1;
phi = -1;
}
void
Viewer::postSelection(const QPoint& point){
bool found;
auto vec = this->camera()->pointUnderPixel(point,found);
if(found){
Point_3 position(vec[0],vec[1],vec[2]);
emit(click(position));
}
}
////////////////////////
// draw
////////////////////////
void
Viewer::set_size_point(double size_points){
::glPointSize(size_points);
}
void
Viewer::draw_point(const Point_3& p,const Color& color,double size_points){
::glColor3f(color.r,color.g,color.b);
::glDisable(GL_LIGHTING);
::glEnable(GL_POINT_SMOOTH);
::glPointSize(size_points);
::glBegin(GL_POINTS);
::glVertex3d(p.x(), p.y(), p.z());
::glEnd();
::glDisable(GL_POINT_SMOOTH);
}
void
Viewer::begin_draw_points(double size,bool light){
light?glEnable(GL_LIGHTING):glDisable(GL_LIGHTING);
::glEnable(GL_POINT_SMOOTH);
::glPointSize(size);
::glBegin(GL_POINTS);
}
void
Viewer::set_color(const Color& color){
::glColor3f(color.r,color.g,color.b);
}
void
Viewer::draw_points(const Point_3 & point){
::glVertex3d(point.x(),point.y(),point.z());
}
void
Viewer::end_draw_points(){
::glEnd();
::glDisable(GL_POINT_SMOOTH);
}
void
Viewer::draw_edge(const Point_3 &a,const Point_3 &b,const Color& color,double size){
::glColor3f(color.r,color.g,color.b);
::glPointSize(3.0);
::glLineWidth(size);
::glBegin(GL_LINES);
::glVertex3f(a.x(),a.y(),a.z());
::glVertex3f(b.x(),b.y(),b.z());
::glEnd();
}
void
Viewer::begin_draw_edges(double size,bool light){
::glLineWidth(size);
::glPolygonMode(GL_FRONT_AND_BACK,GL_LINE);
::glEnable(GL_POLYGON_OFFSET_LINE);
::glPolygonOffset(3.0f,-3.0f);
light?glEnable(GL_LIGHTING):glDisable(GL_LIGHTING);
::glBegin(GL_LINES);
}
void
Viewer::draw_edges(const Point_3 &a,const Point_3 &b){
::glVertex3f(a.x(),a.y(),a.z());
::glVertex3f(b.x(),b.y(),b.z());
}
void
Viewer::end_draw_edges(){
::glEnd();
}
void
Viewer::begin_draw_triangles(double size,bool light,bool transparent){
if(transparent){
::glEnable (GL_BLEND);
::glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
}
::glPolygonMode(GL_FRONT_AND_BACK,GL_FILL);
::glEnable(GL_POLYGON_OFFSET_FILL);
::glPolygonOffset(3.0f,-3.0f);
light?glEnable(GL_LIGHTING):glDisable(GL_LIGHTING);
::glBegin(GL_TRIANGLES);
}
void
Viewer::draw_triangles(const Point_3& p1,const Point_3& p2,const Point_3& p3){
if(!CGAL::collinear(p1,p2,p3)){
auto triangle_normal = CGAL::unit_normal(p1,p2,p3);
::glNormal3d(triangle_normal.x(),triangle_normal.y(),triangle_normal.z());
::glVertex3d(p1.x(),p1.y(),p1.z());
::glVertex3d(p2.x(),p2.y(),p2.z());
::glVertex3d(p3.x(),p3.y(),p3.z());
}
}
void
Viewer::end_draw_triangles(){
::glEnd();
}
#include "Viewer.moc"
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