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/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
* See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
* Author(s): David Salinas
*
* Copyright (C) 2014 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#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] = {static_cast<float> (sin(phi) * cos(theta)),
static_cast<float> (sin(phi) * sin(theta)),
static_cast<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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