1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
|
/*
* 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 "system-gl.h"
#include "OpenCSGRenderer.h"
#include "polyset.h"
#include "csgterm.h"
#include "stl-utils.h"
#ifdef ENABLE_OPENCSG
# include <opencsg.h>
#endif
class OpenCSGPrim : public OpenCSG::Primitive
{
public:
OpenCSGPrim(OpenCSG::Operation operation, unsigned int convexity) :
OpenCSG::Primitive(operation, convexity) { }
shared_ptr<PolySet> ps;
Transform3d m;
PolySet::csgmode_e csgmode;
virtual void render() {
glPushMatrix();
glMultMatrixd(m.data());
ps->render_surface(csgmode, m);
glPopMatrix();
}
};
OpenCSGRenderer::OpenCSGRenderer(CSGChain *root_chain, CSGChain *highlights_chain,
CSGChain *background_chain, GLint *shaderinfo)
: root_chain(root_chain), highlights_chain(highlights_chain),
background_chain(background_chain), shaderinfo(shaderinfo)
{
}
void OpenCSGRenderer::draw(bool /*showfaces*/, bool showedges) const
{
if (this->root_chain) {
GLint *shaderinfo = this->shaderinfo;
if (!shaderinfo[0]) shaderinfo = NULL;
renderCSGChain(this->root_chain, showedges ? shaderinfo : NULL, false, false);
if (this->background_chain) {
renderCSGChain(this->background_chain, showedges ? shaderinfo : NULL, false, true);
}
if (this->highlights_chain) {
renderCSGChain(this->highlights_chain, showedges ? shaderinfo : NULL, true, false);
}
}
}
void OpenCSGRenderer::renderCSGChain(CSGChain *chain, GLint *shaderinfo,
bool highlight, bool background) const
{
std::vector<OpenCSG::Primitive*> primitives;
size_t j = 0;
for (size_t i = 0;; i++) {
bool last = i == chain->objects.size();
const CSGChainObject &i_obj = last ? chain->objects[i-1] : chain->objects[i];
if (last || i_obj.type == CSGTerm::TYPE_UNION) {
if (j+1 != i) {
OpenCSG::render(primitives);
glDepthFunc(GL_EQUAL);
}
if (shaderinfo) glUseProgram(shaderinfo[0]);
for (; j < i; j++) {
const CSGChainObject &j_obj = chain->objects[j];
const Color4f &c = j_obj.color;
glPushMatrix();
glMultMatrixd(j_obj.matrix.data());
PolySet::csgmode_e csgmode = j_obj.type == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
ColorMode colormode = COLORMODE_NONE;
if (background) {
if (j_obj.flag & CSGTerm::FLAG_HIGHLIGHT) {
colormode = COLORMODE_HIGHLIGHT;
}
else {
colormode = COLORMODE_BACKGROUND;
}
csgmode = PolySet::csgmode_e(csgmode + 10);
} else if (j_obj.type == CSGTerm::TYPE_DIFFERENCE) {
if (j_obj.flag & CSGTerm::FLAG_HIGHLIGHT) {
colormode = COLORMODE_HIGHLIGHT;
csgmode = PolySet::csgmode_e(csgmode + 20);
}
else {
colormode = COLORMODE_CUTOUT;
}
} else {
if (j_obj.flag & CSGTerm::FLAG_HIGHLIGHT) {
colormode = COLORMODE_HIGHLIGHT;
csgmode = PolySet::csgmode_e(csgmode + 20);
}
else {
colormode = COLORMODE_MATERIAL;
}
}
setColor(colormode, c.data(), shaderinfo);
j_obj.polyset->render_surface(csgmode, j_obj.matrix, shaderinfo);
glPopMatrix();
}
if (shaderinfo) glUseProgram(0);
for (unsigned int k = 0; k < primitives.size(); k++) {
delete primitives[k];
}
glDepthFunc(GL_LEQUAL);
primitives.clear();
}
if (last) break;
OpenCSGPrim *prim = new OpenCSGPrim(i_obj.type == CSGTerm::TYPE_DIFFERENCE ?
OpenCSG::Subtraction : OpenCSG::Intersection, i_obj.polyset->convexity);
prim->ps = i_obj.polyset;
prim->m = i_obj.matrix;
prim->csgmode = i_obj.type == CSGTerm::TYPE_DIFFERENCE ? PolySet::CSGMODE_DIFFERENCE : PolySet::CSGMODE_NORMAL;
if (highlight) prim->csgmode = PolySet::csgmode_e(prim->csgmode + 20);
else if (background) prim->csgmode = PolySet::csgmode_e(prim->csgmode + 10);
primitives.push_back(prim);
}
std::for_each(primitives.begin(), primitives.end(), del_fun<OpenCSG::Primitive>());
}
|
