mirror of https://github.com/vitalif/openscad
343 lines
9.8 KiB
C++
343 lines
9.8 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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* 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 "module.h"
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#include "node.h"
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#include "context.h"
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#include "printutils.h"
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#include "builtin.h"
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#include "dxfdata.h"
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#include "dxftess.h"
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#include "polyset.h"
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#include "progress.h"
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#include "openscad.h" // get_fragments_from_r()
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <QApplication>
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#include <QTime>
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#include <QProgressDialog>
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class DxfLinearExtrudeModule : public AbstractModule
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{
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public:
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DxfLinearExtrudeModule() { }
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virtual AbstractNode *evaluate(const Context *ctx, const ModuleInstantiation *inst) const;
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};
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class DxfLinearExtrudeNode : public AbstractPolyNode
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{
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public:
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int convexity, slices;
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double fn, fs, fa, height, twist;
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double origin_x, origin_y, scale;
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bool center, has_twist;
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QString filename, layername;
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DxfLinearExtrudeNode(const ModuleInstantiation *mi) : AbstractPolyNode(mi) {
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convexity = slices = 0;
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fn = fs = fa = height = twist = 0;
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origin_x = origin_y = scale = 0;
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center = has_twist = false;
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}
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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 *DxfLinearExtrudeModule::evaluate(const Context *ctx, const ModuleInstantiation *inst) const
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{
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DxfLinearExtrudeNode *node = new DxfLinearExtrudeNode(inst);
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QVector<QString> argnames = QVector<QString>() << "file" << "layer" << "height" << "origin" << "scale" << "center" << "twist" << "slices";
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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->fn = c.lookup_variable("$fn").num;
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node->fs = c.lookup_variable("$fs").num;
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node->fa = c.lookup_variable("$fa").num;
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Value file = c.lookup_variable("file");
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Value layer = c.lookup_variable("layer", true);
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Value height = c.lookup_variable("height", true);
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Value convexity = c.lookup_variable("convexity", true);
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Value origin = c.lookup_variable("origin", true);
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Value scale = c.lookup_variable("scale", true);
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Value center = c.lookup_variable("center", true);
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Value twist = c.lookup_variable("twist", true);
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Value slices = c.lookup_variable("slices", true);
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node->filename = file.text;
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node->layername = layer.text;
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node->height = height.num;
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node->convexity = (int)convexity.num;
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origin.getv2(node->origin_x, node->origin_y);
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node->scale = scale.num;
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if (center.type == Value::BOOL)
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node->center = center.b;
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if (node->height <= 0)
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node->height = 100;
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if (node->convexity <= 0)
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node->convexity = 1;
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if (node->scale <= 0)
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node->scale = 1;
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if (twist.type == Value::NUMBER) {
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node->twist = twist.num;
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if (slices.type == Value::NUMBER) {
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node->slices = (int)slices.num;
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} else {
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node->slices = (int)fmax(2, fabs(get_fragments_from_r(node->height,
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node->fn, node->fs, node->fa) * node->twist / 360));
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}
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node->has_twist = true;
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}
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if (node->filename.isEmpty()) {
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foreach (ModuleInstantiation *v, inst->children) {
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AbstractNode *n = v->evaluate(inst->ctx);
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if (n)
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node->children.append(n);
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}
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}
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return node;
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}
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void register_builtin_dxf_linear_extrude()
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{
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builtin_modules["dxf_linear_extrude"] = new DxfLinearExtrudeModule();
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builtin_modules["linear_extrude"] = new DxfLinearExtrudeModule();
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}
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static void add_slice(PolySet *ps, DxfData::Path *pt, double rot1, double rot2, double h1, double h2)
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{
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for (int j = 1; j < pt->points.count(); j++)
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{
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int k = j - 1;
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double jx1 = pt->points[j]->x * cos(rot1*M_PI/180) + pt->points[j]->y * sin(rot1*M_PI/180);
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double jy1 = pt->points[j]->x * -sin(rot1*M_PI/180) + pt->points[j]->y * cos(rot1*M_PI/180);
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double jx2 = pt->points[j]->x * cos(rot2*M_PI/180) + pt->points[j]->y * sin(rot2*M_PI/180);
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double jy2 = pt->points[j]->x * -sin(rot2*M_PI/180) + pt->points[j]->y * cos(rot2*M_PI/180);
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double kx1 = pt->points[k]->x * cos(rot1*M_PI/180) + pt->points[k]->y * sin(rot1*M_PI/180);
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double ky1 = pt->points[k]->x * -sin(rot1*M_PI/180) + pt->points[k]->y * cos(rot1*M_PI/180);
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double kx2 = pt->points[k]->x * cos(rot2*M_PI/180) + pt->points[k]->y * sin(rot2*M_PI/180);
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double ky2 = pt->points[k]->x * -sin(rot2*M_PI/180) + pt->points[k]->y * cos(rot2*M_PI/180);
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double dia1_len_sq = (jy1-ky2)*(jy1-ky2) + (jx1-kx2)*(jx1-kx2);
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double dia2_len_sq = (jy2-ky1)*(jy2-ky1) + (jx2-kx1)*(jx2-kx1);
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if (dia1_len_sq > dia2_len_sq)
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{
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ps->append_poly();
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if (pt->is_inner) {
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ps->append_vertex(kx1, ky1, h1);
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ps->append_vertex(jx1, jy1, h1);
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ps->append_vertex(jx2, jy2, h2);
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} else {
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ps->insert_vertex(kx1, ky1, h1);
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ps->insert_vertex(jx1, jy1, h1);
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ps->insert_vertex(jx2, jy2, h2);
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}
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ps->append_poly();
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if (pt->is_inner) {
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ps->append_vertex(kx2, ky2, h2);
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ps->append_vertex(kx1, ky1, h1);
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ps->append_vertex(jx2, jy2, h2);
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} else {
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ps->insert_vertex(kx2, ky2, h2);
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ps->insert_vertex(kx1, ky1, h1);
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ps->insert_vertex(jx2, jy2, h2);
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}
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}
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else
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{
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ps->append_poly();
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if (pt->is_inner) {
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ps->append_vertex(kx1, ky1, h1);
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ps->append_vertex(jx1, jy1, h1);
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ps->append_vertex(kx2, ky2, h2);
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} else {
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ps->insert_vertex(kx1, ky1, h1);
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ps->insert_vertex(jx1, jy1, h1);
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ps->insert_vertex(kx2, ky2, h2);
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}
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ps->append_poly();
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if (pt->is_inner) {
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ps->append_vertex(jx2, jy2, h2);
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ps->append_vertex(kx2, ky2, h2);
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ps->append_vertex(jx1, jy1, h1);
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} else {
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ps->insert_vertex(jx2, jy2, h2);
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ps->insert_vertex(kx2, ky2, h2);
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ps->insert_vertex(jx1, jy1, h1);
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}
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}
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}
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}
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PolySet *DxfLinearExtrudeNode::render_polyset(render_mode_e rm) const
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{
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QString key = mk_cache_id();
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if (PolySet::ps_cache.contains(key)) {
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PRINT(PolySet::ps_cache[key]->msg);
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return PolySet::ps_cache[key]->ps->link();
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}
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print_messages_push();
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DxfData *dxf;
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if (filename.isEmpty())
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{
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#ifdef ENABLE_CGAL
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// Before extruding, union all (2D) children nodes
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// to a single DxfData, then tesselate this into a PolySet
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CGAL_Nef_polyhedron N;
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N.dim = 2;
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foreach(AbstractNode * v, children) {
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if (v->modinst->tag_background)
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continue;
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N.p2 += v->render_cgal_nef_polyhedron().p2;
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}
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dxf = new DxfData(N);
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#else // ENABLE_CGAL
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PRINT("WARNING: Found linear_extrude() statement without dxf file but compiled without CGAL support!");
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dxf = new DxfData();
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#endif // ENABLE_CGAL
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} else {
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dxf = new DxfData(fn, fs, fa, filename, layername, origin_x, origin_y, scale);
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}
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PolySet *ps = new PolySet();
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ps->convexity = convexity;
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double h1, h2;
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if (center) {
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h1 = -height/2.0;
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h2 = +height/2.0;
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} else {
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h1 = 0;
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h2 = height;
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}
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bool first_open_path = true;
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for (int i = 0; i < dxf->paths.count(); i++)
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{
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if (dxf->paths[i].is_closed)
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continue;
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if (first_open_path) {
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PRINTF("WARING: Open paths in dxf_liniear_extrude(file = \"%s\", layer = \"%s\"):",
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filename.toAscii().data(), layername.toAscii().data());
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first_open_path = false;
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}
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PRINTF(" %9.5f %10.5f ... %10.5f %10.5f",
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dxf->paths[i].points.first()->x / scale + origin_x,
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dxf->paths[i].points.first()->y / scale + origin_y,
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dxf->paths[i].points.last()->x / scale + origin_x,
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dxf->paths[i].points.last()->y / scale + origin_y);
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}
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if (has_twist)
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{
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dxf_tesselate(ps, dxf, 0, false, true, h1);
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dxf_tesselate(ps, dxf, twist, true, true, h2);
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for (int j = 0; j < slices; j++)
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{
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double t1 = twist*j / slices;
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double t2 = twist*(j+1) / slices;
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double g1 = h1 + (h2-h1)*j / slices;
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double g2 = h1 + (h2-h1)*(j+1) / slices;
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for (int i = 0; i < dxf->paths.count(); i++)
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{
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if (!dxf->paths[i].is_closed)
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continue;
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add_slice(ps, &dxf->paths[i], t1, t2, g1, g2);
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}
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}
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}
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else
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{
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dxf_tesselate(ps, dxf, 0, false, true, h1);
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dxf_tesselate(ps, dxf, 0, true, true, h2);
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for (int i = 0; i < dxf->paths.count(); i++)
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{
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if (!dxf->paths[i].is_closed)
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continue;
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add_slice(ps, &dxf->paths[i], 0, 0, h1, h2);
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}
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}
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PolySet::ps_cache.insert(key, new PolySet::ps_cache_entry(ps->link()));
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print_messages_pop();
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delete dxf;
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return ps;
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}
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QString DxfLinearExtrudeNode::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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struct stat st;
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memset(&st, 0, sizeof(struct stat));
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stat(filename.toAscii().data(), &st);
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text.sprintf("linear_extrude(file = \"%s\", cache = \"%x.%x\", layer = \"%s\", "
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"height = %g, origin = [ %g %g ], scale = %g, center = %s, convexity = %d",
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filename.toAscii().data(), (int)st.st_mtime, (int)st.st_size,
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layername.toAscii().data(), height, origin_x, origin_y, scale,
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center ? "true" : "false", convexity);
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if (has_twist) {
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QString t2;
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t2.sprintf(", twist = %g, slices = %d", twist, slices);
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text += t2;
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}
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QString t3;
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t3.sprintf(", $fn = %g, $fa = %g, $fs = %g) {\n", fn, fs, fa);
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text += t3;
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foreach (AbstractNode *v, children)
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text += v->dump(indent + QString("\t"));
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text += indent + "}\n";
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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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