mirror of https://github.com/vitalif/openscad
200 lines
5.7 KiB
C++
200 lines
5.7 KiB
C++
/*
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* OpenSCAD (www.openscad.at)
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* Copyright (C) 2009 Clifford Wolf <clifford@clifford.at>
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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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* 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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#define INCLUDE_ABSTRACT_NODE_DETAILS
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#include "openscad.h"
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#include <QFile>
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class SurfaceModule : public AbstractModule
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{
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public:
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SurfaceModule() { }
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virtual AbstractNode *evaluate(const Context *ctx, const ModuleInstanciation *inst) const;
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};
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class SurfaceNode : public AbstractPolyNode
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{
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public:
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QString filename;
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bool center;
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int convexity;
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SurfaceNode(const ModuleInstanciation *mi) : AbstractPolyNode(mi) { }
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virtual PolySet *render_polyset(render_mode_e mode) const;
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virtual QString dump(QString indent) const;
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};
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AbstractNode *SurfaceModule::evaluate(const Context *ctx, const ModuleInstanciation *inst) const
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{
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SurfaceNode *node = new SurfaceNode(inst);
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node->center = false;
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node->convexity = 1;
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QVector<QString> argnames = QVector<QString>() << "file" << "center" << "convexity";
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QVector<Expression*> argexpr;
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Context c(ctx);
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c.args(argnames, argexpr, inst->argnames, inst->argvalues);
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node->filename = c.lookup_variable("file").text;
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Value center = c.lookup_variable("center", true);
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if (center.type == Value::BOOL) {
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node->center = center.b;
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}
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Value convexity = c.lookup_variable("convexity", true);
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if (convexity.type == Value::NUMBER) {
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node->convexity = (int)convexity.num;
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}
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return node;
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}
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void register_builtin_surface()
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{
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builtin_modules["surface"] = new SurfaceModule();
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}
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PolySet *SurfaceNode::render_polyset(render_mode_e) const
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{
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QFile f(filename);
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if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
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PRINTF("WARNING: Can't open DXF file `%s'.", filename.toAscii().data());
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return NULL;
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}
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int lines = 0, columns = 0;
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QHash<QPair<int,int>,double> data;
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double min_val = 0;
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while (!f.atEnd())
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{
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QString line = QString(f.readLine()).remove("\n").remove("\r");
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line.replace(QRegExp("^[ \t]+"), "");
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line.replace(QRegExp("[ \t]+$"), "");
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if (line.startsWith("#"))
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continue;
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QStringList fields = line.split(QRegExp("[ \t]+"));
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for (int i = 0; i < fields.count(); i++) {
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if (i >= columns)
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columns = i + 1;
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double v = fields[i].toDouble();
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data[QPair<int,int>(lines, i)] = v;
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min_val = fmin(v-1, min_val);
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}
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lines++;
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}
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PolySet *p = new PolySet();
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p->convexity = convexity;
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double ox = center ? -columns/2.0 : 0;
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double oy = center ? -lines/2.0 : 0;
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for (int i = 1; i < lines; i++)
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for (int j = 1; j < columns; j++)
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{
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double v1 = data[QPair<int,int>(i-1, j-1)];
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double v2 = data[QPair<int,int>(i-1, j)];
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double v3 = data[QPair<int,int>(i, j-1)];
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double v4 = data[QPair<int,int>(i, j)];
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double vx = (v1 + v2 + v3 + v4) / 4;
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p->append_poly();
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p->append_vertex(ox + j-1, oy + i-1, v1);
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p->append_vertex(ox + j, oy + i-1, v2);
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p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
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p->append_poly();
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p->append_vertex(ox + j, oy + i-1, v2);
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p->append_vertex(ox + j, oy + i, v4);
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p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
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p->append_poly();
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p->append_vertex(ox + j, oy + i, v4);
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p->append_vertex(ox + j-1, oy + i, v3);
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p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
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p->append_poly();
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p->append_vertex(ox + j-1, oy + i, v3);
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p->append_vertex(ox + j-1, oy + i-1, v1);
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p->append_vertex(ox + j-0.5, oy + i-0.5, vx);
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}
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for (int i = 1; i < lines; i++)
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{
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p->append_poly();
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p->append_vertex(ox + 0, oy + i-1, min_val);
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p->append_vertex(ox + 0, oy + i-1, data[QPair<int,int>(i-1, 0)]);
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p->append_vertex(ox + 0, oy + i, data[QPair<int,int>(i, 0)]);
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p->append_vertex(ox + 0, oy + i, min_val);
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p->append_poly();
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p->insert_vertex(ox + columns-1, oy + i-1, min_val);
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p->insert_vertex(ox + columns-1, oy + i-1, data[QPair<int,int>(i-1, columns-1)]);
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p->insert_vertex(ox + columns-1, oy + i, data[QPair<int,int>(i, columns-1)]);
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p->insert_vertex(ox + columns-1, oy + i, min_val);
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}
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for (int i = 1; i < columns; i++)
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{
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p->append_poly();
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p->insert_vertex(ox + i-1, oy + 0, min_val);
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p->insert_vertex(ox + i-1, oy + 0, data[QPair<int,int>(0, i-1)]);
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p->insert_vertex(ox + i, oy + 0, data[QPair<int,int>(0, i)]);
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p->insert_vertex(ox + i, oy + 0, min_val);
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p->append_poly();
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p->append_vertex(ox + i-1, oy + lines-1, min_val);
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p->append_vertex(ox + i-1, oy + lines-1, data[QPair<int,int>(lines-1, i-1)]);
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p->append_vertex(ox + i, oy + lines-1, data[QPair<int,int>(lines-1, i)]);
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p->append_vertex(ox + i, oy + lines-1, min_val);
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}
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p->append_poly();
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for (int i = 0; i < columns-1; i++)
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p->insert_vertex(ox + i, oy + 0, min_val);
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for (int i = 0; i < lines-1; i++)
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p->insert_vertex(ox + columns-1, oy + i, min_val);
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for (int i = columns-1; i > 0; i--)
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p->insert_vertex(ox + i, oy + lines-1, min_val);
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for (int i = lines-1; i > 0; i--)
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p->insert_vertex(ox + 0, oy + i, min_val);
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return p;
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}
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QString SurfaceNode::dump(QString indent) const
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{
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if (dump_cache.isEmpty()) {
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QString text;
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text.sprintf("surface(file = \"%s\", center = %s);\n",
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filename.toAscii().data(), center ? "true" : "false");
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((AbstractNode*)this)->dump_cache = indent + QString("n%1: ").arg(idx) + text;
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}
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return dump_cache;
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}
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