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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 <gerbolyze.hpp>
#include <svg_import_defs.h>
#include <svg_geom.h>
#include "polylinecombine.hpp"
using namespace gerbolyze;
using namespace std;
static void polygon_to_cavc (const Polygon &in, cavc::Polyline<double> &out) {
for (auto &p : in) {
out.addVertex(p[0], p[1], 0);
}
out.isClosed() = true; /* sic! */
}
static void cavc_to_polygon (const cavc::Polyline<double> &in, Polygon &out) {
for (auto &p : in.vertexes()) {
out.emplace_back(d2p{p.x(), p.y()});
}
}
namespace gerbolyze {
class Flattener_D {
public:
vector<cavc::Polyline<double>> dark_polys;
vector<cavc::Polyline<double>> clear_polys;
void add_dark_polygon(const Polygon &in) {
polygon_to_cavc(in, dark_polys.emplace_back());
}
void add_clear_polygon(const Polygon &in) {
polygon_to_cavc(in, clear_polys.emplace_back());
}
};
}
Flattener::Flattener(PolygonSink &sink) : m_sink(sink) {
d = new Flattener_D();
}
Flattener::~Flattener() {
delete d;
}
void Flattener::header(d2p origin, d2p size) {
m_sink.header(origin, size);
}
void Flattener::render_out_clear_polys() {
for (auto &sub : d->clear_polys) {
vector<cavc::Polyline<double>> new_dark_polys;
new_dark_polys.reserve(d->dark_polys.size());
for (cavc::Polyline<double> cavc_in : d->dark_polys) {
auto res = cavc::combinePolylines(cavc_in, sub, cavc::PlineCombineMode::Exclude);
if (res.subtracted.size() == 0) {
for (auto &rem : res.remaining) {
new_dark_polys.push_back(std::move(rem));
}
} else { /* custom one-hole deholing code */
assert (res.remaining.size() == 1);
assert (res.subtracted.size() == 1);
auto &rem = res.remaining[0];
auto &sub = res.subtracted[0];
auto bbox = getExtents(rem);
cavc::Polyline<double> quad;
quad.addVertex(bbox.xMin, bbox.yMin, 0);
if (sub.vertexes()[0].x() < sub.vertexes()[1].x()) {
quad.addVertex(sub.vertexes()[0]);
quad.addVertex(sub.vertexes()[1]);
} else {
quad.addVertex(sub.vertexes()[1]);
quad.addVertex(sub.vertexes()[0]);
}
quad.addVertex(bbox.xMax, bbox.yMin, 0);
quad.isClosed() = true; /* sic! */
auto res2 = cavc::combinePolylines(rem, quad, cavc::PlineCombineMode::Exclude);
assert (res2.subtracted.size() == 0);
for (auto &rem : res2.remaining) {
auto res3 = cavc::combinePolylines(rem, sub, cavc::PlineCombineMode::Exclude);
assert (res3.subtracted.size() == 0);
for (auto &p : res3.remaining) {
new_dark_polys.push_back(std::move(p));
}
}
auto res4 = cavc::combinePolylines(rem, quad, cavc::PlineCombineMode::Intersect);
assert (res4.subtracted.size() == 0);
for (auto &rem : res4.remaining) {
auto res5 = cavc::combinePolylines(rem, sub, cavc::PlineCombineMode::Exclude);
assert (res5.subtracted.size() == 0);
for (auto &p : res5.remaining) {
new_dark_polys.push_back(std::move(p));
}
}
}
}
d->dark_polys = std::move(new_dark_polys);
}
d->clear_polys.clear();
}
Flattener &Flattener::operator<<(GerberPolarityToken pol) {
if (m_current_polarity != pol) {
m_current_polarity = pol;
if (pol == GRB_POL_DARK) {
render_out_clear_polys();
}
}
return *this;
}
Flattener &Flattener::operator<<(const LayerNameToken &layer_name) {
flush_polys_to_sink();
m_sink << layer_name;
cerr << "Flattener forwarding layer name to sink: \"" << layer_name.m_name << "\"" << endl;
return *this;
}
Flattener &Flattener::operator<<(const Polygon &poly) {
if (m_current_polarity == GRB_POL_DARK) {
d->add_dark_polygon(poly);
} else { /* clear */
d->add_clear_polygon(poly);
render_out_clear_polys();
}
return *this;
}
void Flattener::flush_polys_to_sink() {
*this << GRB_POL_DARK; /* force render */
m_sink << GRB_POL_DARK;
for (auto &poly : d->dark_polys) {
Polygon poly_out;
for (auto &p : poly.vertexes()) {
poly_out.emplace_back(d2p{p.x(), p.y()});
}
m_sink << poly_out;
}
d->clear_polys.clear();
d->dark_polys.clear();
}
void Flattener::footer() {
flush_polys_to_sink();
m_sink.footer();
}
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