diff options
Diffstat (limited to 'csg.cc')
| -rw-r--r-- | csg.cc | 96 |
1 files changed, 96 insertions, 0 deletions
@@ -0,0 +1,96 @@ +/* + * OpenSCAD (www.openscad.at) + * Copyright (C) 2009 Clifford Wolf <clifford@clifford.at> + * + * 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. + * + * 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 + * + */ + +#define INCLUDE_ABSTRACT_NODE_DETAILS + +#include "openscad.h" + +enum csg_type_e { + UNION, + DIFFERENCE, + INTERSECT +}; + +class CsgModule : public AbstractModule +{ +public: + csg_type_e type; + CsgModule(csg_type_e type) : type(type) { } + virtual AbstractNode *evaluate(const Context *ctx, const QVector<QString> &call_argnames, const QVector<Value> &call_argvalues, const QVector<AbstractNode*> child_nodes) const; +}; + +class CsgNode : public AbstractNode +{ +public: + csg_type_e type; + CsgNode(csg_type_e type) : type(type) { } + virtual CGAL_Nef_polyhedron render_cgal_nef_polyhedron() const; + virtual QString dump(QString indent) const; +}; + +AbstractNode *CsgModule::evaluate(const Context*, const QVector<QString>&, const QVector<Value>&, const QVector<AbstractNode*> child_nodes) const +{ + CsgNode *node = new CsgNode(type); + foreach (AbstractNode *v, child_nodes) + node->children.append(v); + return node; +} + +CGAL_Nef_polyhedron CsgNode::render_cgal_nef_polyhedron() const +{ + bool first; + CGAL_Nef_polyhedron N; + foreach (AbstractNode *v, children) { + if (first) { + N = v->render_cgal_nef_polyhedron(); + first = false; + } else if (type == UNION) { + N += v->render_cgal_nef_polyhedron(); + } else if (type == DIFFERENCE) { + N -= v->render_cgal_nef_polyhedron(); + } else if (type == INTERSECT) { + N *= v->render_cgal_nef_polyhedron(); + } + } + progress_report(); + return N; +} + +QString CsgNode::dump(QString indent) const +{ + QString text = indent; + if (type == UNION) + text += "union() {\n"; + if (type == DIFFERENCE) + text += "difference() {\n"; + if (type == INTERSECT) + text += "intersect() {\n"; + foreach (AbstractNode *v, children) + text += v->dump(indent + QString("\t")); + return text + indent + "}\n"; +} + +void register_builtin_csg() +{ + builtin_modules["union"] = new CsgModule(UNION); + builtin_modules["difference"] = new CsgModule(DIFFERENCE); + builtin_modules["intersect"] = new CsgModule(INTERSECT); +} + |