3 * Copyright (C) 2008 Stuart Buchanan
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation; either version 2 of the
8 * License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
22 #include <osgDB/Registry>
23 #include <osgDB/Input>
24 #include <osgDB/ParameterOutput>
26 #include "ShaderGeometry.hxx"
29 using namespace osgDB;
33 void ShaderGeometry::drawImplementation(RenderInfo& renderInfo) const
35 osg::State& state = *renderInfo.getState();
36 const Extensions* extensions = getExtensions(state.getContextID(),true);
38 for(TreeBin::TreeList::const_iterator t = _trees.begin(); t != _trees.end(); ++t)
40 extensions->glVertexAttrib1f(1, (float) t->texture_index/varieties);
41 glColor4f(t->position.x(), t->position.y(), t->position.z(), t->scale);
42 _geometry->draw(renderInfo);
46 BoundingBox ShaderGeometry::computeBound() const
48 BoundingBox geom_box = _geometry->getBound();
50 for(TreeBin::TreeList::const_iterator itr = _trees.begin();
53 bb.expandBy(geom_box.corner(0)*itr->scale +
54 osg::Vec3( itr->position.x(), itr->position.y(), itr->position.z() ));
55 bb.expandBy(geom_box.corner(7)*itr->scale +
56 osg::Vec3( itr->position.x(), itr->position.y(), itr->position.z() ));
61 bool ShaderGeometry_readLocalData(Object& obj, Input& fr)
63 bool iteratorAdvanced = false;
65 ShaderGeometry& geom = static_cast<ShaderGeometry&>(obj);
67 if ((fr[0].matchWord("geometry"))) {
69 iteratorAdvanced = true;
70 osg::Drawable* drawable = fr.readDrawable();
72 geom._geometry = drawable;
75 if ((fr.matchSequence("instances %i"))) {
76 int entry = fr[0].getNoNestedBrackets();
78 fr[1].getInt(capacity);
79 geom._trees.reserve(capacity);
81 iteratorAdvanced = true;
83 while (!fr.eof() && fr[0].getNoNestedBrackets() > entry) {
87 if (fr[0].getFloat(v.x()) && fr[1].getFloat(v.y())
88 && fr[2].getFloat(v.z()) && fr[3].getInt(t) && fr[4].getFloat(s)) {
90 //SGVec3f* v = new SGVec3f(v.x(), v.y(), v.z());
91 //TreeBin::Tree tree = new TreeBin::Tree(v, t, s);
92 geom._trees.push_back(TreeBin::Tree(v, t, s));
98 return iteratorAdvanced;
101 bool ShaderGeometry_writeLocalData(const Object& obj, Output& fw)
103 const ShaderGeometry& geom = static_cast<const ShaderGeometry&>(obj);
105 fw.indent() << "geometry" << std::endl;
106 fw.writeObject(*geom._geometry);
107 fw.indent() << "instances " << geom._trees.size() << std::endl;
108 fw.indent() << "{" << std::endl;
110 for (TreeBin::TreeList::const_iterator iter
111 = geom._trees.begin();
112 iter != geom._trees.end();
114 fw.indent() << iter->position.x() << " " << iter->position.y() << " " << iter->position.z() << " "
115 << iter->texture_index << " " << iter->scale << std::endl;
118 fw.indent() << "}" << std::endl;
122 osgDB::RegisterDotOsgWrapperProxy shaderGeometryProxy
126 "Object Drawable ShaderGeometry",
127 &ShaderGeometry_readLocalData,
128 &ShaderGeometry_writeLocalData