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/*
* OpenSCAD (www.openscad.org)
* Copyright (C) 2009-2011 Clifford Wolf <clifford@clifford.at> and
* Marius Kintel <marius@kintel.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* As a special exception, you have permission to link this program
* with the CGAL library and distribute executables, as long as you
* follow the requirements of the GNU GPL in regard to all of the
* software in the executable aside from CGAL.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "cgalrenderer.h"
#include "polyset.h"
#include "CGAL_renderer.h"
#include "dxfdata.h"
#include "dxftess.h"
#include "Preferences.h"
CGALRenderer::CGALRenderer(const CGAL_Nef_polyhedron &root) : root(root)
{
if (root.dim == 2) {
DxfData dd(root);
this->polyset = new PolySet();
this->polyset->is2d = true;
dxf_tesselate(this->polyset, &dd, 0, true, false, 0);
}
else if (root.dim == 3) {
this->polyhedron = new Polyhedron();
// FIXME: Make independent of Preferences
this->polyhedron->setColor(Polyhedron::CGAL_NEF3_MARKED_FACET_COLOR,
Preferences::inst()->color(Preferences::CGAL_FACE_BACK_COLOR).red(),
Preferences::inst()->color(Preferences::CGAL_FACE_BACK_COLOR).green(),
Preferences::inst()->color(Preferences::CGAL_FACE_BACK_COLOR).blue());
this->polyhedron->setColor(Polyhedron::CGAL_NEF3_UNMARKED_FACET_COLOR,
Preferences::inst()->color(Preferences::CGAL_FACE_FRONT_COLOR).red(),
Preferences::inst()->color(Preferences::CGAL_FACE_FRONT_COLOR).green(),
Preferences::inst()->color(Preferences::CGAL_FACE_FRONT_COLOR).blue());
CGAL::OGL::Nef3_Converter<CGAL_Nef_polyhedron3>::convert_to_OGLPolyhedron(this->root.p3, this->polyhedron);
this->polyhedron->init();
}
}
CGALRenderer::~CGALRenderer()
{
if (this->polyset) this->polyset->unlink();
}
void CGALRenderer::draw(bool showfaces, bool showedges) const
{
if (this->root.dim == 2) {
// Draw 2D polygons
glDisable(GL_LIGHTING);
const QColor &col = Preferences::inst()->color(Preferences::CGAL_FACE_2D_COLOR);
glColor3f(col.redF(), col.greenF(), col.blueF());
for (int i=0; i < this->polyset->polygons.size(); i++) {
glBegin(GL_POLYGON);
for (int j=0; j < this->polyset->polygons[i].size(); j++) {
PolySet::Point p = this->polyset->polygons[i][j];
glVertex3d(p.x, p.y, -0.1);
}
glEnd();
}
typedef CGAL_Nef_polyhedron2::Explorer Explorer;
typedef Explorer::Face_const_iterator fci_t;
typedef Explorer::Halfedge_around_face_const_circulator heafcc_t;
typedef Explorer::Point Point;
Explorer E = this->root.p2.explorer();
// Draw 2D edges
glDisable(GL_DEPTH_TEST);
glDisable(GL_LIGHTING);
glLineWidth(2);
const QColor &col2 = Preferences::inst()->color(Preferences::CGAL_EDGE_2D_COLOR);
glColor3f(col2.redF(), col2.greenF(), col2.blueF());
// Extract the boundary, including inner boundaries of the polygons
for (fci_t fit = E.faces_begin(), facesend = E.faces_end(); fit != facesend; ++fit) {
bool fset = false;
double fx = 0.0, fy = 0.0;
heafcc_t fcirc(E.halfedge(fit)), fend(fcirc);
CGAL_For_all(fcirc, fend) {
if(E.is_standard(E.target(fcirc))) {
Point p = E.point(E.target(fcirc));
double x = to_double(p.x()), y = to_double(p.y());
if (!fset) {
glBegin(GL_LINE_STRIP);
fx = x, fy = y;
fset = true;
}
glVertex3d(x, y, -0.1);
}
}
if (fset) {
glVertex3d(fx, fy, -0.1);
glEnd();
}
}
glEnable(GL_DEPTH_TEST);
}
else if (this->root.dim == 3) {
if (showfaces) this->polyhedron->set_style(SNC_BOUNDARY);
else this->polyhedron->set_style(SNC_SKELETON);
this->polyhedron->draw(showfaces && showedges);
}
}
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