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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 "ThrownTogetherRenderer.h"
#include "polyset.h"
#include "csgterm.h"
#include <GL/glew.h> // this must be included before the GL headers
#include <qgl.h>
ThrownTogetherRenderer::ThrownTogetherRenderer(CSGChain *root_chain,
CSGChain *highlights_chain,
CSGChain *background_chain)
: root_chain(root_chain), highlights_chain(highlights_chain),
background_chain(background_chain)
{
}
void ThrownTogetherRenderer::draw(bool showfaces, bool showedges) const
{
if (this->root_chain) {
glEnable(GL_CULL_FACE);
glCullFace(GL_BACK);
renderCSGChain(this->root_chain, false, false, showedges, false);
glCullFace(GL_FRONT);
glColor3ub(255, 0, 255);
renderCSGChain(this->root_chain, false, false, showedges, true);
glDisable(GL_CULL_FACE);
}
if (this->background_chain)
renderCSGChain(this->background_chain, false, true, showedges, false);
if (this->highlights_chain)
renderCSGChain(this->highlights_chain, true, false, showedges, false);
}
void ThrownTogetherRenderer::renderCSGChain(CSGChain *chain, bool highlight,
bool background, bool showedges,
bool fberror) const
{
glDepthFunc(GL_LEQUAL);
QHash<QPair<PolySet*,double*>,int> polySetVisitMark;
for (int i = 0; i < chain->polysets.size(); i++) {
if (polySetVisitMark[QPair<PolySet*,double*>(chain->polysets[i], chain->matrices[i])]++ > 0)
continue;
double *m = chain->matrices[i];
glPushMatrix();
glMultMatrixd(m);
int csgmode = chain->types[i] == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
if (highlight) {
chain->polysets[i]->render_surface(PolySet::COLORMODE_HIGHLIGHT, PolySet::csgmode_e(csgmode + 20), m);
if (showedges) {
glDisable(GL_LIGHTING);
chain->polysets[i]->render_edges(PolySet::COLORMODE_HIGHLIGHT, PolySet::csgmode_e(csgmode + 20));
glEnable(GL_LIGHTING);
}
} else if (background) {
chain->polysets[i]->render_surface(PolySet::COLORMODE_BACKGROUND, PolySet::csgmode_e(csgmode + 10), m);
if (showedges) {
glDisable(GL_LIGHTING);
chain->polysets[i]->render_edges(PolySet::COLORMODE_BACKGROUND, PolySet::csgmode_e(csgmode + 10));
glEnable(GL_LIGHTING);
}
} else if (fberror) {
if (highlight) {
chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode + 20), m);
} else if (background) {
chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode + 10), m);
} else {
chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m);
}
} else if (m[16] >= 0 || m[17] >= 0 || m[18] >= 0 || m[19] >= 0) {
glColor4d(m[16], m[17], m[18], m[19]);
chain->polysets[i]->render_surface(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode), m);
if (showedges) {
glDisable(GL_LIGHTING);
glColor4d((m[16]+1)/2, (m[17]+1)/2, (m[18]+1)/2, 1.0);
chain->polysets[i]->render_edges(PolySet::COLORMODE_NONE, PolySet::csgmode_e(csgmode));
glEnable(GL_LIGHTING);
}
} else if (chain->types[i] == CSGTerm::TYPE_DIFFERENCE) {
chain->polysets[i]->render_surface(PolySet::COLORMODE_CUTOUT, PolySet::csgmode_e(csgmode), m);
if (showedges) {
glDisable(GL_LIGHTING);
chain->polysets[i]->render_edges(PolySet::COLORMODE_CUTOUT, PolySet::csgmode_e(csgmode));
glEnable(GL_LIGHTING);
}
} else {
chain->polysets[i]->render_surface(PolySet::COLORMODE_MATERIAL, PolySet::csgmode_e(csgmode), m);
if (showedges) {
glDisable(GL_LIGHTING);
chain->polysets[i]->render_edges(PolySet::COLORMODE_MATERIAL, PolySet::csgmode_e(csgmode));
glEnable(GL_LIGHTING);
}
}
glPopMatrix();
}
}
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