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authorjaseg <git@jaseg.de>2021-01-26 00:01:53 +0100
committerjaseg <git@jaseg.de>2021-01-26 00:01:53 +0100
commitbc0ef634cf5142ea51c55d63b241c1f5e1d0e4b2 (patch)
treeac8a81cd256af74f7c044dab1f2e582071ce4783 /src
parent538b8a32b9d35a8f7068208772a9a963f1eefc4a (diff)
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Prototype flattener/compositor code
Diffstat (limited to 'src')
-rw-r--r--src/out_flattener.cpp103
1 files changed, 103 insertions, 0 deletions
diff --git a/src/out_flattener.cpp b/src/out_flattener.cpp
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+/*
+ * This file is part of gerbolyze, a vector image preprocessing toolchain
+ * Copyright (C) 2021 Jan Sebastian Götte <gerbolyze@jaseg.de>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 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 Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#include <cmath>
+#include <algorithm>
+#include <string>
+#include <iostream>
+#include <iomanip>
+#include <clipper.hpp>
+#include <gerbolyze.hpp>
+#include <svg_import_defs.h>
+#include <svg_geom.h>
+
+using namespace gerbolyze;
+using namespace std;
+
+namespace gerbolyze {
+ class Flattener_D {
+ public:
+ ClipperLib::Clipper c;
+ };
+}
+
+Flattener::Flattener(PolygonSink &sink) : m_sink(sink) {
+ d = new Flattener_D();
+ d->c.StrictlySimple(true);
+}
+
+Flattener::~Flattener() {
+ delete d;
+}
+
+void Flattener::header(d2p origin, d2p size) {
+ m_sink.header(origin, size);
+}
+
+Flattener &Flattener::operator<<(GerberPolarityToken pol) {
+ if (m_current_polarity != pol) {
+ m_current_polarity = pol;
+ }
+
+ return *this;
+}
+
+Flattener &Flattener::operator<<(const Polygon &poly) {
+ ClipperLib::Path le_path;
+ for (auto &p : poly) {
+ le_path.push_back({(ClipperLib::cInt)round(p[0] * clipper_scale), (ClipperLib::cInt)round(p[1] * clipper_scale)});
+ }
+
+ ClipperLib::Paths out;
+
+ if (m_current_polarity == GRB_POL_DARK) {
+ d->c.AddPath(le_path, ClipperLib::ptSubject, true);
+ d->c.Execute(ClipperLib::ctUnion, out, ClipperLib::pftNonZero);
+
+ } else { /* clear */
+ d->c.AddPath(le_path, ClipperLib::ptClip, true);
+ d->c.Execute(ClipperLib::ctDifference, out, ClipperLib::pftNonZero);
+ }
+
+ d->c.Clear();
+ d->c.AddPaths(out, ClipperLib::ptSubject, true);
+
+ return *this;
+}
+
+void Flattener::footer() {
+ ClipperLib::PolyTree t_out;
+ d->c.Execute(ClipperLib::ctDifference, t_out, ClipperLib::pftNonZero);
+ d->c.Clear();
+
+ m_sink << GRB_POL_DARK;
+
+ ClipperLib::Paths out;
+ cerr << "deholing" << endl;
+ dehole_polytree(t_out, out);
+ for (auto &poly : out) {
+ Polygon poly_out;
+ for (auto &p : poly) {
+ poly_out.push_back({p.X / clipper_scale, p.Y / clipper_scale});
+ }
+ m_sink << poly_out;
+ }
+
+ m_sink.footer();
+}
+