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-rw-r--r--dxfdata.cc88
-rw-r--r--openscad.h2
2 files changed, 50 insertions, 40 deletions
diff --git a/dxfdata.cc b/dxfdata.cc
index 3aa5bf6..b1698fc 100644
--- a/dxfdata.cc
+++ b/dxfdata.cc
@@ -36,20 +36,23 @@ DxfData::DxfData()
{
}
+/*!
+ Reads a layer from the given file, or all layers if layename.isNull()
+ */
DxfData::DxfData(double fn, double fs, double fa, QString filename, QString layername, double xorigin, double yorigin, double scale)
{
- handle_dep(filename);
- QFile f(filename);
+ handle_dep(filename); // Register ourselves as a dependency
+ QFile f(filename);
if (!f.open(QIODevice::ReadOnly | QIODevice::Text)) {
- PRINTF("WARNING: Can't open DXF file `%s'.", filename.toAscii().data());
+ PRINTF("WARNING: Can't open DXF file `%s'.", filename.toUtf8().data());
return;
}
QTextStream stream(&f);
- QList<Line> lines;
Grid2d< QVector<int> > grid;
- QHash< QString, QList<Line> > blockdata;
+ QList<Line> lines; // Global lines
+ QHash< QString, QList<Line> > blockdata; // Lines in blocks
bool in_entities_section = false;
bool in_blocks_section = false;
@@ -67,10 +70,11 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
grid.data(_p1x, _p1y).append(lines.count()); \
grid.data(_p2x, _p2y).append(lines.count()); \
if (in_entities_section) \
- lines.append(Line(p(_p1x, _p1y), p(_p2x, _p2y))); \
+ lines.append( \
+ Line(addPoint(_p1x, _p1y), addPoint(_p2x, _p2y))); \
if (in_blocks_section && !current_block.isNull()) \
blockdata[current_block].append( \
- Line(p(_p1x, _p1y), p(_p2x, _p2y))); \
+ Line(addPoint(_p1x, _p1y), addPoint(_p2x, _p2y))); \
} while (0)
QString mode, layer, name, iddata;
@@ -86,6 +90,10 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
QHash<QString, int> unsupported_entities_list;
+
+ //
+ // Parse DXF file. Will populate this->points, this->dims, lines and blockdata
+ //
while (!stream.atEnd())
{
QString id_str = stream.readLine();
@@ -223,13 +231,13 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
}
else if (mode == "DIMENSION" &&
(layername.isNull() || layername == layer)) {
- dims.append(Dim());
- dims.last().type = dimtype;
+ this->dims.append(Dim());
+ this->dims.last().type = dimtype;
for (int i = 0; i < 7; i++)
for (int j = 0; j < 2; j++)
- dims.last().coords[i][j] = coords[i][j];
- dims.last().angle = start_angle;
- dims.last().name = name;
+ this->dims.last().coords[i][j] = coords[i][j];
+ this->dims.last().angle = start_angle;
+ this->dims.last().name = name;
}
else if (mode == "BLOCK") {
current_block = iddata;
@@ -309,6 +317,8 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
}
}
+ // Extract paths from parsed data
+
QHash<int, int> enabled_lines;
for (int i = 0; i < lines.count(); i++) {
enabled_lines[i] = i;
@@ -338,8 +348,8 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
break;
create_open_path:
- paths.append(Path());
- Path *this_path = &paths.last();
+ this->paths.append(Path());
+ Path *this_path = &this->paths.last();
this_path->points.append(lines[current_line].p[current_point]);
while (1) {
@@ -373,8 +383,8 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
{
int current_line = enabled_lines.begin().value(), current_point = 0;
- paths.append(Path());
- Path *this_path = &paths.last();
+ this->paths.append(Path());
+ Path *this_path = &this->paths.last();
this_path->is_closed = true;
this_path->points.append(lines[current_line].p[current_point]);
@@ -408,10 +418,10 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
#if 0
printf("----- DXF Data -----\n");
- for (int i = 0; i < paths.count(); i++) {
- printf("Path %d (%s):\n", i, paths[i].is_closed ? "closed" : "open");
- for (int j = 0; j < paths[i].points.count(); j++)
- printf(" %f %f\n", paths[i].points[j]->x, paths[i].points[j]->y);
+ for (int i = 0; i < this->paths.count(); i++) {
+ printf("Path %d (%s):\n", i, this->paths[i].is_closed ? "closed" : "open");
+ for (int j = 0; j < this->paths[i].points.count(); j++)
+ printf(" %f %f\n", this->paths[i].points[j]->x, this->paths[i].points[j]->y);
}
printf("--------------------\n");
fflush(stdout);
@@ -420,27 +430,27 @@ DxfData::DxfData(double fn, double fs, double fa, QString filename, QString laye
void DxfData::fixup_path_direction()
{
- if (paths.count() > 0) {
- for (int i = 0; i < paths.count(); i++) {
- if (!paths[i].is_closed)
+ if (this->paths.count() > 0) {
+ for (int i = 0; i < this->paths.count(); i++) {
+ if (!this->paths[i].is_closed)
break;
- paths[i].is_inner = true;
- double min_x = paths[i].points[0]->x;
+ this->paths[i].is_inner = true;
+ double min_x = this->paths[i].points[0]->x;
int min_x_point = 0;
- for (int j = 0; j < paths[i].points.count(); j++) {
- if (paths[i].points[j]->x < min_x) {
- min_x = paths[i].points[j]->x;
+ for (int j = 0; j < this->paths[i].points.count(); j++) {
+ if (this->paths[i].points[j]->x < min_x) {
+ min_x = this->paths[i].points[j]->x;
min_x_point = j;
}
}
// rotate points if the path is in non-standard rotation
int b = min_x_point;
- int a = b == 0 ? paths[i].points.count() - 2 : b - 1;
- int c = b == paths[i].points.count() - 1 ? 1 : b + 1;
- double ax = paths[i].points[a]->x - paths[i].points[b]->x;
- double ay = paths[i].points[a]->y - paths[i].points[b]->y;
- double cx = paths[i].points[c]->x - paths[i].points[b]->x;
- double cy = paths[i].points[c]->y - paths[i].points[b]->y;
+ int a = b == 0 ? this->paths[i].points.count() - 2 : b - 1;
+ int c = b == this->paths[i].points.count() - 1 ? 1 : b + 1;
+ double ax = this->paths[i].points[a]->x - this->paths[i].points[b]->x;
+ double ay = this->paths[i].points[a]->y - this->paths[i].points[b]->y;
+ double cx = this->paths[i].points[c]->x - this->paths[i].points[b]->x;
+ double cy = this->paths[i].points[c]->y - this->paths[i].points[b]->y;
#if 0
printf("Rotate check:\n");
printf(" a/b/c indices = %d %d %d\n", a, b, c);
@@ -448,16 +458,16 @@ void DxfData::fixup_path_direction()
printf(" b->c vector = %f %f (%f)\n", cx, cy, atan2(cx, cy));
#endif
if (atan2(ax, ay) < atan2(cx, cy)) {
- for (int j = 0; j < paths[i].points.count()/2; j++)
- paths[i].points.swap(j, paths[i].points.count()-1-j);
+ for (int j = 0; j < this->paths[i].points.count()/2; j++)
+ this->paths[i].points.swap(j, this->paths[i].points.count()-1-j);
}
}
}
}
-DxfData::Point *DxfData::p(double x, double y)
+DxfData::Point *DxfData::addPoint(double x, double y)
{
- points.append(Point(x, y));
- return &points.last();
+ this->points.append(Point(x, y));
+ return &this->points.last();
}
diff --git a/openscad.h b/openscad.h
index 8245ae8..6a20789 100644
--- a/openscad.h
+++ b/openscad.h
@@ -445,7 +445,7 @@ public:
DxfData(double fn, double fs, double fa, QString filename, QString layername = QString(), double xorigin = 0.0, double yorigin = 0.0, double scale = 1.0);
DxfData(const struct CGAL_Nef_polyhedron &N);
- Point *p(double x, double y);
+ Point *addPoint(double x, double y);
private:
void fixup_path_direction();
contact: Jan Huwald // Impressum