mirror of https://github.com/vitalif/openscad
112 lines
3.8 KiB
C++
112 lines
3.8 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 "calc.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 "builtin.h"
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#include "textnode.h"
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#include "FreetypeRenderer.h"
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#include "Polygon2d.h"
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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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class TextModule : public AbstractModule
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{
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public:
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TextModule() : AbstractModule() { }
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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 *TextModule::instantiate(const Context *ctx, const ModuleInstantiation *inst, EvalContext *evalctx) const
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{
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TextNode *node = new TextNode(inst);
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AssignmentList args;
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args += Assignment("text"), Assignment("size"), Assignment("font");
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Context c(ctx);
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c.setVariables(args, evalctx);
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double fn = c.lookup_variable("$fn")->toDouble();
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double fa = c.lookup_variable("$fa")->toDouble();
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double fs = c.lookup_variable("$fs")->toDouble();
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node->params.set_fn(fn);
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node->params.set_fa(fa);
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node->params.set_fs(fs);
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double size = lookup_double_variable_with_default(c, "size", 10.0);
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int segments = Calc::get_fragments_from_r(size, fn, fs, fa);
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// The curved segments of most fonts are relatively short, so
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// by using a fraction of the number of full circle segments
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// the resolution will be better matching the detail level of
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// other objects.
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int text_segments = std::max(((int)floor(segments / 8)) + 1, 2);
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node->params.set_size(size);
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node->params.set_segments(text_segments);
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node->params.set_text(lookup_string_variable_with_default(c, "text", ""));
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node->params.set_spacing(lookup_double_variable_with_default(c, "spacing", 1.0));
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node->params.set_font(lookup_string_variable_with_default(c, "font", ""));
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node->params.set_direction(lookup_string_variable_with_default(c, "direction", ""));
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node->params.set_language(lookup_string_variable_with_default(c, "language", "en"));
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node->params.set_script(lookup_string_variable_with_default(c, "script", ""));
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node->params.set_halign(lookup_string_variable_with_default(c, "halign", "left"));
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node->params.set_valign(lookup_string_variable_with_default(c, "valign", "baseline"));
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FreetypeRenderer renderer;
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renderer.detect_properties(node->params);
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return node;
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}
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std::vector<const Geometry *> TextNode::createGeometryList() const
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{
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FreetypeRenderer renderer;
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return renderer.render(this->get_params());
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}
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FreetypeRenderer::Params TextNode::get_params() const
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{
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return params;
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}
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std::string TextNode::toString() const
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{
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std::stringstream stream;
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stream << name() << "(" << this->params << ")";
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return stream.str();
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}
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void register_builtin_text()
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{
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Builtins::init("text", new TextModule());
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}
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