mirror of https://github.com/vitalif/openscad
116 lines
3.6 KiB
C++
116 lines
3.6 KiB
C++
/*
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* OpenSCAD (www.openscad.org)
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* Copyright (C) 2009-2011 Clifford Wolf <clifford@clifford.at> and
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* Marius Kintel <marius@kintel.net>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* As a special exception, you have permission to link this program
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* with the CGAL library and distribute executables, as long as you
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* follow the requirements of the GNU GPL in regard to all of the
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* software in the executable aside from CGAL.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "offsetnode.h"
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#include "module.h"
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#include "evalcontext.h"
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#include "printutils.h"
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#include "fileutils.h"
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#include "builtin.h"
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#include "calc.h"
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#include "polyset.h"
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#include "mathc99.h"
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#include <sstream>
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#include <boost/assign/std/vector.hpp>
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using namespace boost::assign; // bring 'operator+=()' into scope
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#include <boost/filesystem.hpp>
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namespace fs = boost::filesystem;
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class OffsetModule : public AbstractModule
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{
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public:
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OffsetModule() { }
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virtual AbstractNode *instantiate(const Context *ctx, const ModuleInstantiation *inst, EvalContext *evalctx) const;
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};
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AbstractNode *OffsetModule::instantiate(const Context *ctx, const ModuleInstantiation *inst, EvalContext *evalctx) const
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{
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OffsetNode *node = new OffsetNode(inst);
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AssignmentList args;
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args += Assignment("r");
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Context c(ctx);
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c.setVariables(args, evalctx);
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inst->scope.apply(*evalctx);
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node->fn = c.lookup_variable("$fn")->toDouble();
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node->fs = c.lookup_variable("$fs")->toDouble();
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node->fa = c.lookup_variable("$fa")->toDouble();
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// default with no argument at all is (r = 1, chamfer = false)
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// radius takes precedence if both r and delta are given.
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node->delta = 1;
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node->chamfer = false;
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node->join_type = ClipperLib::jtRound;
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const ValuePtr r = c.lookup_variable("r", true);
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const ValuePtr delta = c.lookup_variable("delta", true);
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const ValuePtr chamfer = c.lookup_variable("chamfer", true);
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if (r->isDefinedAs(Value::NUMBER)) {
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r->getDouble(node->delta);
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} else if (delta->isDefinedAs(Value::NUMBER)) {
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delta->getDouble(node->delta);
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node->join_type = ClipperLib::jtMiter;
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if (chamfer->isDefinedAs(Value::BOOL) && chamfer->toBool()) {
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node->chamfer = true;
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node->join_type = ClipperLib::jtSquare;
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}
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}
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std::vector<AbstractNode *> instantiatednodes = inst->instantiateChildren(evalctx);
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node->children.insert(node->children.end(), instantiatednodes.begin(), instantiatednodes.end());
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return node;
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}
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std::string OffsetNode::toString() const
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{
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std::stringstream stream;
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bool isRadius = this->join_type == ClipperLib::jtRound;
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const char *var = isRadius ? "(r = " : "(delta = ";
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stream << this->name() << var << std::dec << this->delta;
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if (!isRadius) {
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stream << ", chamfer = " << (this->chamfer ? "true" : "false");
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}
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stream << ", $fn = " << this->fn
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<< ", $fa = " << this->fa
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<< ", $fs = " << this->fs << ")";
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return stream.str();
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}
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void register_builtin_offset()
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{
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Builtins::init("offset", new OffsetModule());
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}
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