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Diffstat (limited to 'src/dxfdim.cc')
| -rw-r--r-- | src/dxfdim.cc | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/src/dxfdim.cc b/src/dxfdim.cc new file mode 100644 index 0000000..359606a --- /dev/null +++ b/src/dxfdim.cc @@ -0,0 +1,187 @@ +/* + * 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 + * + */ + +#include "openscad.h" +#include "printutils.h" + +#include <sys/types.h> +#include <sys/stat.h> +#include <unistd.h> + +QHash<QString,Value> dxf_dim_cache; +QHash<QString,Value> dxf_cross_cache; + +Value builtin_dxf_dim(const QVector<QString> &argnames, const QVector<Value> &args) +{ + QString filename; + QString layername; + QString name; + double xorigin = 0; + double yorigin = 0; + double scale = 1; + + for (int i = 0; i < argnames.count() && i < args.count(); i++) { + if (argnames[i] == "file") + filename = args[i].text; + if (argnames[i] == "layer") + layername = args[i].text; + if (argnames[i] == "origin") + args[i].getv2(xorigin, yorigin); + if (argnames[i] == "scale") + args[i].getnum(scale); + if (argnames[i] == "name") + name = args[i].text; + } + + struct stat st; + memset(&st, 0, sizeof(struct stat)); + stat(filename.toAscii().data(), &st); + + QString key = filename + "|" + layername + "|" + name + "|" + QString::number(xorigin) + "|" + QString::number(yorigin) + + "|" + QString::number(scale) + "|" + QString::number(st.st_mtime) + "|" + QString::number(st.st_size); + + if (dxf_dim_cache.contains(key)) + return dxf_dim_cache[key]; + + DxfData dxf(36, 0, 0, filename, layername, xorigin, yorigin, scale); + + for (int i = 0; i < dxf.dims.count(); i++) + { + if (!name.isNull() && dxf.dims[i].name != name) + continue; + + DxfData::Dim *d = &dxf.dims[i]; + int type = d->type & 7; + + if (type == 0) { + // Rotated, horizontal or vertical + double x = d->coords[4][0] - d->coords[3][0]; + double y = d->coords[4][1] - d->coords[3][1]; + double angle = d->angle; + double distance_projected_on_line = fabs(x * cos(angle*M_PI/180) + y * sin(angle*M_PI/180)); + return dxf_dim_cache[key] = Value(distance_projected_on_line); + } + else if (type == 1) { + // Aligned + double x = d->coords[4][0] - d->coords[3][0]; + double y = d->coords[4][1] - d->coords[3][1]; + return dxf_dim_cache[key] = Value(sqrt(x*x + y*y)); + } + else if (type == 2) { + // Angular + double a1 = atan2(d->coords[0][0] - d->coords[5][0], d->coords[0][1] - d->coords[5][1]); + double a2 = atan2(d->coords[4][0] - d->coords[3][0], d->coords[4][1] - d->coords[3][1]); + return dxf_dim_cache[key] = Value(fabs(a1 - a2) * 180 / M_PI); + } + else if (type == 3 || type == 4) { + // Diameter or Radius + double x = d->coords[5][0] - d->coords[0][0]; + double y = d->coords[5][1] - d->coords[0][1]; + return dxf_dim_cache[key] = Value(sqrt(x*x + y*y)); + } + else if (type == 5) { + // Angular 3 Point + } + else if (type == 6) { + // Ordinate + return dxf_dim_cache[key] = Value((d->type & 64) ? d->coords[3][0] : d->coords[3][1]); + } + + PRINTA("WARNING: Dimension `%1' in `%2', layer `%3' has unsupported type!", name, filename, layername); + return Value(); + } + + PRINTA("WARNING: Can't find dimension `%1' in `%2', layer `%3'!", name, filename, layername); + + return Value(); +} + +Value builtin_dxf_cross(const QVector<QString> &argnames, const QVector<Value> &args) +{ + QString filename; + QString layername; + double xorigin = 0; + double yorigin = 0; + double scale = 1; + + for (int i = 0; i < argnames.count() && i < args.count(); i++) { + if (argnames[i] == "file") + filename = args[i].text; + if (argnames[i] == "layer") + layername = args[i].text; + if (argnames[i] == "origin") + args[i].getv2(xorigin, yorigin); + if (argnames[i] == "scale") + args[i].getnum(scale); + } + + struct stat st; + memset(&st, 0, sizeof(struct stat)); + stat(filename.toAscii().data(), &st); + + QString key = filename + "|" + layername + "|" + QString::number(xorigin) + "|" + QString::number(yorigin) + + "|" + QString::number(scale) + "|" + QString::number(st.st_mtime) + "|" + QString::number(st.st_size); + + if (dxf_cross_cache.contains(key)) + return dxf_cross_cache[key]; + + DxfData dxf(36, 0, 0, filename, layername, xorigin, yorigin, scale); + + double coords[4][2]; + + for (int i = 0, j = 0; i < dxf.paths.count(); i++) { + if (dxf.paths[i].points.count() != 2) + continue; + coords[j][0] = dxf.paths[i].points[0]->x; + coords[j++][1] = dxf.paths[i].points[0]->y; + coords[j][0] = dxf.paths[i].points[1]->x; + coords[j++][1] = dxf.paths[i].points[1]->y; + + if (j == 4) { + double x1 = coords[0][0], y1 = coords[0][1]; + double x2 = coords[1][0], y2 = coords[1][1]; + double x3 = coords[2][0], y3 = coords[2][1]; + double x4 = coords[3][0], y4 = coords[3][1]; + double dem = (y4 - y3)*(x2 - x1) - (x4 - x3)*(y2 - y1); + if (dem == 0) + break; + double ua = ((x4 - x3)*(y1 - y3) - (y4 - y3)*(x1 - x3)) / dem; + // double ub = ((x2 - x1)*(y1 - y3) - (y2 - y1)*(x1 - x3)) / dem; + double x = x1 + ua*(x2 - x1); + double y = y1 + ua*(y2 - y1); + Value ret; + ret.type = Value::VECTOR; + ret.vec.append(new Value(x)); + ret.vec.append(new Value(y)); + return dxf_cross_cache[key] = ret; + } + } + + PRINTA("WARNING: Can't find cross in `%1', layer `%2'!", filename, layername); + + return Value(); +} + +void initialize_builtin_dxf_dim() +{ + builtin_functions["dxf_dim"] = new BuiltinFunction(&builtin_dxf_dim); + builtin_functions["dxf_cross"] = new BuiltinFunction(&builtin_dxf_cross); +} + |