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/*
* 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"
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
class DxfLinearExtrudeModule : public AbstractModule
{
public:
DxfLinearExtrudeModule() { }
virtual AbstractNode *evaluate(const Context *ctx, const ModuleInstanciation *inst) const;
};
class DxfLinearExtrudeNode : public AbstractPolyNode
{
public:
int convexity, slices;
double fn, fs, fa, height, twist;
double origin_x, origin_y, scale;
bool center, has_twist;
QString filename, layername;
DxfLinearExtrudeNode(const ModuleInstanciation *mi) : AbstractPolyNode(mi) {
convexity = slices = 0;
fn = fs = fa = height = twist = 0;
origin_x = origin_y = scale = 0;
center = has_twist = false;
}
virtual PolySet *render_polyset(render_mode_e mode) const;
virtual QString dump(QString indent) const;
};
AbstractNode *DxfLinearExtrudeModule::evaluate(const Context *ctx, const ModuleInstanciation *inst) const
{
DxfLinearExtrudeNode *node = new DxfLinearExtrudeNode(inst);
QVector<QString> argnames = QVector<QString>() << "file" << "layer" << "height" << "origin" << "scale" << "center" << "twist" << "slices";
QVector<Expression*> argexpr;
Context c(ctx);
c.args(argnames, argexpr, inst->argnames, inst->argvalues);
node->fn = c.lookup_variable("$fn").num;
node->fs = c.lookup_variable("$fs").num;
node->fa = c.lookup_variable("$fa").num;
Value file = c.lookup_variable("file");
Value layer = c.lookup_variable("layer", true);
Value height = c.lookup_variable("height", true);
Value convexity = c.lookup_variable("convexity", true);
Value origin = c.lookup_variable("origin", true);
Value scale = c.lookup_variable("scale", true);
Value center = c.lookup_variable("center", true);
Value twist = c.lookup_variable("twist", true);
Value slices = c.lookup_variable("slices", true);
node->filename = file.text;
node->layername = layer.text;
node->height = height.num;
node->convexity = (int)convexity.num;
origin.getv2(node->origin_x, node->origin_y);
node->scale = scale.num;
if (center.type == Value::BOOL)
node->center = center.b;
if (node->height <= 0)
node->height = 100;
if (node->convexity <= 0)
node->convexity = 1;
if (node->scale <= 0)
node->scale = 1;
if (twist.type == Value::NUMBER) {
node->twist = twist.num;
if (slices.type == Value::NUMBER) {
node->slices = (int)slices.num;
} else {
node->slices = (int)fmax(2, fabs(get_fragments_from_r(node->height,
node->fn, node->fs, node->fa) * node->twist / 360));
}
node->has_twist = true;
}
return node;
}
void register_builtin_dxf_linear_extrude()
{
builtin_modules["dxf_linear_extrude"] = new DxfLinearExtrudeModule();
}
static void add_slice(PolySet *ps, DxfData::Path *pt, double rot1, double rot2, double h1, double h2)
{
for (int j = 1; j < pt->points.count(); j++)
{
int k = j - 1;
double jx1 = pt->points[j]->x * cos(rot1*M_PI/180) + pt->points[j]->y * sin(rot1*M_PI/180);
double jy1 = pt->points[j]->x * -sin(rot1*M_PI/180) + pt->points[j]->y * cos(rot1*M_PI/180);
double jx2 = pt->points[j]->x * cos(rot2*M_PI/180) + pt->points[j]->y * sin(rot2*M_PI/180);
double jy2 = pt->points[j]->x * -sin(rot2*M_PI/180) + pt->points[j]->y * cos(rot2*M_PI/180);
double kx1 = pt->points[k]->x * cos(rot1*M_PI/180) + pt->points[k]->y * sin(rot1*M_PI/180);
double ky1 = pt->points[k]->x * -sin(rot1*M_PI/180) + pt->points[k]->y * cos(rot1*M_PI/180);
double kx2 = pt->points[k]->x * cos(rot2*M_PI/180) + pt->points[k]->y * sin(rot2*M_PI/180);
double ky2 = pt->points[k]->x * -sin(rot2*M_PI/180) + pt->points[k]->y * cos(rot2*M_PI/180);
ps->append_poly();
if (pt->is_inner) {
ps->append_vertex(kx1, ky1, h1);
ps->append_vertex(jx1, jy1, h1);
ps->append_vertex(jx2, jy2, h2);
} else {
ps->insert_vertex(kx1, ky1, h1);
ps->insert_vertex(jx1, jy1, h1);
ps->insert_vertex(jx2, jy2, h2);
}
ps->append_poly();
if (pt->is_inner) {
ps->append_vertex(kx2, ky2, h2);
ps->append_vertex(kx1, ky1, h1);
ps->append_vertex(jx2, jy2, h2);
} else {
ps->insert_vertex(kx2, ky2, h2);
ps->insert_vertex(kx1, ky1, h1);
ps->insert_vertex(jx2, jy2, h2);
}
}
}
PolySet *DxfLinearExtrudeNode::render_polyset(render_mode_e) const
{
QString key = mk_cache_id();
if (PolySet::ps_cache.contains(key))
return PolySet::ps_cache[key]->ps->link();
DxfData dxf(fn, fs, fa, filename, layername, origin_x, origin_y, scale);
PolySet *ps = new PolySet();
ps->convexity = convexity;
double h1, h2;
if (center) {
h1 = -height/2.0;
h2 = +height/2.0;
} else {
h1 = 0;
h2 = height;
}
bool first_open_path = true;
for (int i = 0; i < dxf.paths.count(); i++)
{
if (dxf.paths[i].is_closed)
continue;
if (first_open_path) {
PRINTF("WARING: Open paths in dxf_liniear_extrude(file = \"%s\", layer = \"%s\"):",
filename.toAscii().data(), layername.toAscii().data());
first_open_path = false;
}
PRINTF(" %9.5f %10.5f ... %10.5f %10.5f",
dxf.paths[i].points.first()->x / scale + origin_x,
dxf.paths[i].points.first()->y / scale + origin_y,
dxf.paths[i].points.last()->x / scale + origin_x,
dxf.paths[i].points.last()->y / scale + origin_y);
}
if (has_twist)
{
dxf_tesselate(ps, &dxf, 0, false, h1);
dxf_tesselate(ps, &dxf, twist, true, h2);
for (int j = 0; j < slices; j++)
{
double t1 = twist*j / slices;
double t2 = twist*(j+1) / slices;
double g1 = h1 + (h2-h1)*j / slices;
double g2 = h1 + (h2-h1)*(j+1) / slices;
for (int i = 0; i < dxf.paths.count(); i++)
{
if (!dxf.paths[i].is_closed)
continue;
add_slice(ps, &dxf.paths[i], t1, t2, g1, g2);
}
}
}
else
{
dxf_tesselate(ps, &dxf, 0, false, h1);
dxf_tesselate(ps, &dxf, 0, true, h2);
for (int i = 0; i < dxf.paths.count(); i++)
{
if (!dxf.paths[i].is_closed)
continue;
add_slice(ps, &dxf.paths[i], 0, 0, h1, h2);
}
}
PolySet::ps_cache.insert(key, new PolySetPtr(ps->link()));
return ps;
}
QString DxfLinearExtrudeNode::dump(QString indent) const
{
if (dump_cache.isEmpty()) {
QString text;
struct stat st;
memset(&st, 0, sizeof(struct stat));
stat(filename.toAscii().data(), &st);
text.sprintf("dxf_linear_extrude(file = \"%s\", cache = \"%x.%x\", layer = \"%s\", "
"height = %f, origin = [ %f %f ], scale = %f, center = %s",
filename.toAscii().data(), (int)st.st_mtime, (int)st.st_size,
layername.toAscii().data(), height, origin_x, origin_y, scale,
center ? "true" : "false");
if (has_twist) {
QString t2;
t2.sprintf(", twist = %f, slices = %d", twist, slices);
text += t2;
}
QString t3;
t3.sprintf(", $fn = %f, $fa = %f, $fs = %f);\n", fn, fs, fa);
text += t3;
((AbstractNode*)this)->dump_cache = indent + QString("n%1: ").arg(idx) + text;
}
return dump_cache;
}
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