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-rw-r--r--svg-flatten/Makefile9
-rw-r--r--svg-flatten/include/flatten.hpp6
-rw-r--r--svg-flatten/include/geom2d.hpp157
-rw-r--r--svg-flatten/include/gerbolyze.hpp22
-rw-r--r--svg-flatten/src/flatten.cpp1
-rw-r--r--svg-flatten/src/main.cpp2
-rw-r--r--svg-flatten/src/svg_doc.cpp117
-rw-r--r--svg-flatten/src/svg_geom.cpp22
-rw-r--r--svg-flatten/src/svg_geom.h14
-rw-r--r--svg-flatten/src/svg_import_util.cpp57
-rw-r--r--svg-flatten/src/svg_import_util.h8
-rw-r--r--svg-flatten/src/svg_path.cpp72
-rw-r--r--svg-flatten/src/svg_path.h4
-rw-r--r--svg-flatten/src/svg_pattern.cpp48
-rw-r--r--svg-flatten/src/svg_pattern.h9
-rw-r--r--svg-flatten/src/vec_core.cpp136
-rw-r--r--svg-flatten/src/vec_core.h9
17 files changed, 330 insertions, 363 deletions
diff --git a/svg-flatten/Makefile b/svg-flatten/Makefile
index ca776d3..a82094c 100644
--- a/svg-flatten/Makefile
+++ b/svg-flatten/Makefile
@@ -24,10 +24,11 @@ SOURCES := src/svg_color.cpp \
src/out_flattener.cpp \
src/out_dilater.cpp \
src/lambda_sink.cpp \
+ src/flatten.cpp \
$(UPSTREAM_DIR)/cpp-base64/base64.cpp
-CLIPPER_SOURCES ?= $(UPSTREAM_DIR)/clipper-6.4.2/cpp/clipper.cpp $(UPSTREAM_DIR)/clipper-6.4.2/cpp/cpp_cairo/cairo_clipper.cpp
-CLIPPER_INCLUDES ?= -I$(UPSTREAM_DIR)/clipper-6.4.2/cpp -I$(UPSTREAM_DIR)/clipper-6.4.2/cpp/cpp_cairo/
+CLIPPER_SOURCES ?= $(UPSTREAM_DIR)/clipper-6.4.2/cpp/clipper.cpp
+CLIPPER_INCLUDES ?= -I$(UPSTREAM_DIR)/clipper-6.4.2/cpp
VORONOI_INCLUDES ?= -I$(UPSTREAM_DIR)/voronoi/src
POISSON_INCLUDES ?= -I$(UPSTREAM_DIR)/poisson-disk-sampling/thinks/poisson_disk_sampling/
BASE64_INCLUDES ?= -I$(UPSTREAM_DIR)/cpp-base64
@@ -38,7 +39,7 @@ SUBPROCESS_INCLUDES ?= -I$(UPSTREAM_DIR)/subprocess.h
SOURCES += $(CLIPPER_SOURCES)
INCLUDES := -Iinclude -Isrc $(CLIPPER_INCLUDES) $(VORONOI_INCLUDES) $(POISSON_INCLUDES) $(BASE64_INCLUDES) $(ARGAGG_INCLUDES) $(CAVC_INCLUDES) $(SUBPROCESS_INCLUDES)
-PKG_CONFIG_DEPS := pangocairo pugixml
+PKG_CONFIG_DEPS := pugixml
CXXFLAGS := -std=c++2a -g -Wall -Wextra -O0
CXXFLAGS += $(shell $(PKG_CONFIG) --cflags $(PKG_CONFIG_DEPS))
# hack for stone age opencv in debian stable
@@ -57,7 +58,7 @@ all: $(BUILDDIR)/$(TARGET)
.PHONY: check-deps
check-deps:
@echo
- @$(PKG_CONFIG) --cflags --libs pangocairo pugixml >/dev/null
+ @$(PKG_CONFIG) --cflags --libs pugixml >/dev/null
# debian hack. see above.
@$(PKG_CONFIG) --cflags --libs opencv4 >/dev/null ||$(PKG_CONFIG) --cflags --libs opencv >/dev/null
diff --git a/svg-flatten/include/flatten.hpp b/svg-flatten/include/flatten.hpp
index b620890..92cbf38 100644
--- a/svg-flatten/include/flatten.hpp
+++ b/svg-flatten/include/flatten.hpp
@@ -5,9 +5,9 @@ namespace gerbolyze {
class curve4_div {
public:
curve4_div(double distance_tolerance=0.1, double angle_tolerance=0.0, double cusp_limit=0.0)
- : m_distance_tolerance_square(0.25*distance_tolerance*distance_tolerance),
- m_angle_tolerance(angle_tolerance),
- m_cusp_limit(cusp_limit)
+ : m_cusp_limit(cusp_limit),
+ m_distance_tolerance_square(0.25*distance_tolerance*distance_tolerance),
+ m_angle_tolerance(angle_tolerance)
{
}
diff --git a/svg-flatten/include/geom2d.hpp b/svg-flatten/include/geom2d.hpp
new file mode 100644
index 0000000..ac56628
--- /dev/null
+++ b/svg-flatten/include/geom2d.hpp
@@ -0,0 +1,157 @@
+/*
+ * 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/>.
+ */
+
+#pragma once
+
+#include <array>
+#include <string>
+#include <sstream>
+#include <cmath>
+#include <algorithm>
+
+#include <clipper.hpp>
+
+#include "svg_import_defs.h"
+
+using namespace std;
+
+namespace gerbolyze {
+
+ typedef std::array<double, 2> d2p;
+ typedef std::vector<d2p> Polygon;
+
+ class xform2d {
+ public:
+ xform2d(double xx, double yx, double xy, double yy, double x0=0.0, double y0=0.0) :
+ xx(xx), yx(yx), xy(xy), yy(yy), x0(x0), y0(y0) {}
+
+ xform2d() : xform2d(1.0, 0.0, 0.0, 1.0) {}
+
+ xform2d(const string &svg_transform) : xform2d() {
+ if (svg_transform.empty())
+ return;
+
+ string start("matrix(");
+ if (svg_transform.substr(0, start.length()) != start)
+ return;
+ if (svg_transform.back() != ')')
+ return;
+
+ const string &foo = svg_transform.substr(start.length(), svg_transform.length());
+ const string &bar = foo.substr(0, foo.length() - 1);
+
+ istringstream xform(bar);
+
+ double a, c, e,
+ b, d, f;
+ xform >> a >> b >> c >> d >> e >> f;
+ if (xform.fail())
+ return;
+
+ xx=a, yx=b, xy=c, yy=d, x0=e, y0=f;
+ }
+
+ xform2d &translate(double x, double y) {
+ x0 += x;
+ y0 += y;
+ return *this;
+ }
+
+ xform2d &scale(double x, double y) {
+ xx *= x; yx *= y; xy *= x;
+ yy *= y; x0 *= x; y0 *= y;
+ return *this;
+ }
+
+ xform2d &transform(const xform2d &other) {
+ double n_xx = xx * other.xx + yx * other.xy;
+ double n_yx = xx * other.yx + yx * other.yy;
+
+ double n_xy = xy * other.xx + yy * other.xy;
+ double n_yy = xy * other.yx + yy * other.yy;
+
+ double n_x0 = x0 * other.xx + y0 * other.xy + other.x0;
+ double n_y0 = x0 * other.yx + y0 * other.yy + other.y0;
+
+ xx = n_xx;
+ yx = n_yx;
+ xy = n_xy;
+ yy = n_yy;
+ x0 = n_x0;
+ y0 = n_y0;
+
+ return *this;
+ };
+
+ double doc2phys_dist(double dist_doc) {
+ return xx * dist_doc;
+ }
+
+ double phys2doc_dist(double dist_doc) {
+ return xx * dist_doc;
+ }
+
+ d2p doc2phys(const d2p p) {
+ return d2p {
+ xx * p[0] + xy * p[1] + x0,
+ xy * p[1] + yy * p[1] + y0
+ };
+ }
+
+ xform2d &invert(bool *success_out=nullptr) {
+ /* From Cairo source */
+
+ /* inv (A) = 1/det (A) * adj (A) */
+ double det = xx*yy - yx*xy;
+
+ if (det == 0 || !isfinite(det)) {
+ if (success_out)
+ *success_out = false;
+ *this = xform2d(); /* unity matrix */
+ return *this;
+ }
+
+ *this = xform2d(yy/det, -yx/det,
+ -xy/det, xx/det,
+ (xy*y0 - yy*x0)/det, (yx*x0 - xx*y0)/det);
+
+ if (success_out)
+ *success_out = true;
+ return *this;
+ }
+
+ /* Transform given clipper paths */
+ void transform_paths(ClipperLib::Paths &paths) {
+ for (auto &p : paths) {
+ std::transform(p.begin(), p.end(), p.begin(),
+ [this](ClipperLib::IntPoint p) -> ClipperLib::IntPoint {
+ d2p out(this->doc2phys(d2p{p.X / clipper_scale, p.Y / clipper_scale}));
+ return {
+ (ClipperLib::cInt)round(out[0] * clipper_scale),
+ (ClipperLib::cInt)round(out[1] * clipper_scale)
+ };
+ });
+ }
+ }
+
+ private:
+ double xx, yx,
+ xy, yy,
+ x0, y0;
+ };
+}
diff --git a/svg-flatten/include/gerbolyze.hpp b/svg-flatten/include/gerbolyze.hpp
index ed93bbc..d1d5f85 100644
--- a/svg-flatten/include/gerbolyze.hpp
+++ b/svg-flatten/include/gerbolyze.hpp
@@ -22,16 +22,17 @@
#include <iostream>
#include <string>
#include <array>
+
#include <pugixml.hpp>
+
#include "svg_pattern.h"
+#include "geom2d.hpp"
namespace gerbolyze {
constexpr char lib_version[] = "2.0";
- typedef std::array<double, 2> d2p;
typedef std::function<std::vector<d2p> *(double, double, double)> sampling_fun;
- typedef std::vector<d2p> Polygon;
enum GerberPolarityToken {
GRB_POL_CLEAR,
@@ -121,7 +122,7 @@ namespace gerbolyze {
class ImageVectorizer {
public:
virtual ~ImageVectorizer() {};
- virtual void vectorize_image(cairo_t *cr, const pugi::xml_node &node, ClipperLib::Paths &clip_path, cairo_matrix_t &viewport_matrix, PolygonSink &sink, double min_feature_size_px) = 0;
+ virtual void vectorize_image(xform2d &mat, const pugi::xml_node &node, ClipperLib::Paths &clip_path, PolygonSink &sink, double min_feature_size_px) = 0;
};
ImageVectorizer *makeVectorizer(const std::string &name);
@@ -147,11 +148,10 @@ namespace gerbolyze {
class SVGDocument {
public:
SVGDocument() : _valid(false) {}
- ~SVGDocument();
/* true -> load successful */
- bool load(std::istream &in, std::string debug_out_filename="/tmp/kicad_svg_debug.svg");
- bool load(std::string filename, std::string debug_out_filename="/tmp/kicad_svg_debug.svg");
+ bool load(std::istream &in);
+ bool load(std::string filename);
/* true -> load successful */
bool valid() const { return _valid; }
operator bool() const { return valid(); }
@@ -168,13 +168,11 @@ namespace gerbolyze {
private:
friend class Pattern;
- cairo_t *cairo() { return cr; }
const ClipperLib::Paths *lookup_clip_path(const pugi::xml_node &node);
Pattern *lookup_pattern(const std::string id);
- void export_svg_group(const RenderSettings &rset, const pugi::xml_node &group, ClipperLib::Paths &parent_clip_path, const ElementSelector *sel=nullptr, bool included=true, bool is_root=false);
- void export_svg_path(const RenderSettings &rset, const pugi::xml_node &node, ClipperLib::Paths &clip_path);
- void setup_debug_output(std::string filename="");
+ void export_svg_group(xform2d &mat, const RenderSettings &rset, const pugi::xml_node &group, ClipperLib::Paths &parent_clip_path, const ElementSelector *sel=nullptr, bool included=true, bool is_root=false);
+ void export_svg_path(xform2d &mat, const RenderSettings &rset, const pugi::xml_node &node, ClipperLib::Paths &clip_path);
void setup_viewport_clip();
void load_clips(const RenderSettings &rset);
void load_patterns();
@@ -188,12 +186,8 @@ namespace gerbolyze {
double page_w_mm, page_h_mm;
std::map<std::string, Pattern> pattern_map;
std::map<std::string, ClipperLib::Paths> clip_path_map;
- cairo_matrix_t viewport_matrix;
ClipperLib::Paths vb_paths; /* viewport clip rect */
- cairo_t *cr = nullptr;
- cairo_surface_t *surface = nullptr;
-
PolygonSink *polygon_sink = nullptr;
static constexpr double dbg_fill_alpha = 0.8;
diff --git a/svg-flatten/src/flatten.cpp b/svg-flatten/src/flatten.cpp
index e93f044..cb7f427 100644
--- a/svg-flatten/src/flatten.cpp
+++ b/svg-flatten/src/flatten.cpp
@@ -7,7 +7,6 @@
using namespace gerbolyze;
namespace gerbolyze {
- const double curve_distance_epsilon = 1e-15;
const double curve_collinearity_epsilon = 1e-15;
const double curve_angle_tolerance_epsilon = 0.1;
constexpr unsigned curve_recursion_limit = 20;
diff --git a/svg-flatten/src/main.cpp b/svg-flatten/src/main.cpp
index 951b447..722b356 100644
--- a/svg-flatten/src/main.cpp
+++ b/svg-flatten/src/main.cpp
@@ -422,7 +422,7 @@ int main(int argc, char **argv) {
SVGDocument doc;
cerr << "Loading temporary file " << frob << endl;
ifstream load_f(frob);
- if (!doc.load(load_f, "/tmp/debug.svg")) {
+ if (!doc.load(load_f)) {
cerr << "Error loading input file \"" << in_f_name << "\", exiting." << endl;
return EXIT_FAILURE;
}
diff --git a/svg-flatten/src/svg_doc.cpp b/svg-flatten/src/svg_doc.cpp
index 00c4bd6..b7ae61b 100644
--- a/svg-flatten/src/svg_doc.cpp
+++ b/svg-flatten/src/svg_doc.cpp
@@ -30,21 +30,14 @@ using namespace gerbolyze;
using namespace std;
using namespace ClipperLib;
-gerbolyze::SVGDocument::~SVGDocument() {
- if (cr)
- cairo_destroy (cr);
- if (surface)
- cairo_surface_destroy (surface);
-}
-
-bool gerbolyze::SVGDocument::load(string filename, string debug_out_filename) {
+bool gerbolyze::SVGDocument::load(string filename) {
ifstream in_f;
in_f.open(filename);
- return in_f && load(in_f, debug_out_filename);
+ return in_f && load(in_f);
}
-bool gerbolyze::SVGDocument::load(istream &in, string debug_out_filename) {
+bool gerbolyze::SVGDocument::load(istream &in) {
/* Load XML document */
auto res = svg_doc.load(in);
if (!res) {
@@ -84,7 +77,6 @@ bool gerbolyze::SVGDocument::load(istream &in, string debug_out_filename) {
cerr << "Warning: Input file is missing <defs> node" << endl;
}
- setup_debug_output(debug_out_filename);
setup_viewport_clip();
load_patterns();
@@ -140,14 +132,14 @@ bool IDElementSelector::match(const pugi::xml_node &node, bool included, bool is
}
/* Recursively export all SVG elements in the given group. */
-void gerbolyze::SVGDocument::export_svg_group(const RenderSettings &rset, const pugi::xml_node &group, Paths &parent_clip_path, const ElementSelector *sel, bool included, bool is_root) {
+void gerbolyze::SVGDocument::export_svg_group(xform2d &mat, const RenderSettings &rset, const pugi::xml_node &group, Paths &parent_clip_path, const ElementSelector *sel, bool included, bool is_root) {
/* Load clip paths from defs given bezier flattening tolerance from rset */
load_clips(rset);
/* Enter the group's coordinate system */
- cairo_save(cr);
- apply_cairo_transform_from_svg(cr, group.attribute("transform").value());
+ xform2d local_xf(mat);
+ local_xf.transform(xform2d(group.attribute("transform").value()));
/* Fetch clip path from global registry and transform it into document coordinates. */
Paths clip_path;
@@ -161,7 +153,7 @@ void gerbolyze::SVGDocument::export_svg_group(const RenderSettings &rset, const
} else {
clip_path = *lookup;
}
- transform_paths(cr, clip_path);
+ local_xf.transform_paths(clip_path);
/* Clip against parent's clip path (both are now in document coordinates) */
if (!parent_clip_path.empty()) {
@@ -185,7 +177,7 @@ void gerbolyze::SVGDocument::export_svg_group(const RenderSettings &rset, const
*polygon_sink << tok;
}
- export_svg_group(rset, node, clip_path, sel, true);
+ export_svg_group(local_xf, rset, node, clip_path, sel, true);
if (is_root) {
LayerNameToken tok {""};
@@ -193,7 +185,7 @@ void gerbolyze::SVGDocument::export_svg_group(const RenderSettings &rset, const
}
} else if (name == "path") {
- export_svg_path(rset, node, clip_path);
+ export_svg_path(local_xf, rset, node, clip_path);
} else if (name == "image") {
ImageVectorizer *vec = rset.m_vec_sel.select(node);
@@ -203,7 +195,7 @@ void gerbolyze::SVGDocument::export_svg_group(const RenderSettings &rset, const
}
double min_feature_size_px = mm_to_doc_units(rset.m_minimum_feature_size_mm);
- vec->vectorize_image(cr, node, clip_path, viewport_matrix, *polygon_sink, min_feature_size_px);
+ vec->vectorize_image(local_xf, node, clip_path, *polygon_sink, min_feature_size_px);
delete vec;
} else if (name == "defs") {
@@ -212,12 +204,10 @@ void gerbolyze::SVGDocument::export_svg_group(const RenderSettings &rset, const
cerr << " Unexpected child: <" << node.name() << ">" << endl;
}
}
-
- cairo_restore(cr);
}
/* Export an SVG path element to gerber. Apply patterns and clip on the fly. */
-void gerbolyze::SVGDocument::export_svg_path(const RenderSettings &rset, const pugi::xml_node &node, Paths &clip_path) {
+void gerbolyze::SVGDocument::export_svg_path(xform2d &mat, const RenderSettings &rset, const pugi::xml_node &node, Paths &clip_path) {
enum gerber_color fill_color = gerber_fill_color(node);
enum gerber_color stroke_color = gerber_stroke_color(node);
@@ -234,18 +224,13 @@ void gerbolyze::SVGDocument::export_svg_path(const RenderSettings &rset, const p
}
/* Load path from SVG path data and transform into document units. */
- cairo_save(cr);
- apply_cairo_transform_from_svg(cr, node.attribute("transform").value());
+ xform2d local_xf(mat);
+ local_xf.transform(xform2d(node.attribute("transform").value()));
PolyTree ptree_stroke;
PolyTree ptree_fill;
PolyTree ptree;
- load_svg_path(cr, node, ptree_stroke, ptree_fill, rset.curve_tolerance_mm);
-
- double _y = 0;
- cairo_user_to_device_distance(cr, &stroke_width, &_y);
-
- cairo_restore (cr);
+ load_svg_path(local_xf, node, ptree_stroke, ptree_fill, rset.curve_tolerance_mm);
Paths open_paths, closed_paths, fill_paths;
OpenPathsFromPolyTree(ptree_stroke, open_paths);
@@ -273,7 +258,7 @@ void gerbolyze::SVGDocument::export_svg_path(const RenderSettings &rset, const p
cerr << "Warning: Fill pattern with id \"" << fill_pattern_id << "\" not found." << endl;
} else {
- pattern->tile(rset, fill_paths);
+ pattern->tile(local_xf, rset, fill_paths);
}
} else { /* solid fill */
@@ -282,20 +267,7 @@ void gerbolyze::SVGDocument::export_svg_path(const RenderSettings &rset, const p
* and gerber viewer. */
dehole_polytree(ptree_fill, f_polys);
- /* Export SVG */
- cairo_save(cr);
- cairo_set_matrix(cr, &viewport_matrix);
- cairo_new_path(cr);
- ClipperLib::cairo::clipper_to_cairo(f_polys, cr, CAIRO_PRECISION, ClipperLib::cairo::tNone);
- if (fill_color == GRB_DARK) {
- cairo_set_source_rgba(cr, 0.0, 0.0, 1.0, dbg_fill_alpha);
- } else { /* GRB_CLEAR */
- cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, dbg_fill_alpha);
- }
- cairo_fill (cr);
-
/* export gerber */
- cairo_identity_matrix(cr);
for (const auto &poly : f_polys) {
vector<array<double, 2>> out;
for (const auto &p : poly)
@@ -304,7 +276,6 @@ void gerbolyze::SVGDocument::export_svg_path(const RenderSettings &rset, const p
});
*polygon_sink << (fill_color == GRB_DARK ? GRB_POL_DARK : GRB_POL_CLEAR) << out;
}
- cairo_restore(cr);
}
}
@@ -363,27 +334,14 @@ void gerbolyze::SVGDocument::export_svg_path(const RenderSettings &rset, const p
} else {
Paths clip;
PolyTreeToPaths(ptree, clip);
- pattern->tile(rset, clip);
+ pattern->tile(local_xf, rset, clip);
}
} else {
Paths s_polys;
dehole_polytree(ptree, s_polys);
- /* Export debug svg */
- cairo_save(cr);
- cairo_set_matrix(cr, &viewport_matrix);
- cairo_new_path(cr);
- ClipperLib::cairo::clipper_to_cairo(s_polys, cr, CAIRO_PRECISION, ClipperLib::cairo::tNone);
- if (stroke_color == GRB_DARK) {
- cairo_set_source_rgba(cr, 0.0, 0.0, 1.0, dbg_stroke_alpha);
- } else { /* GRB_CLEAR */
- cairo_set_source_rgba(cr, 1.0, 0.0, 0.0, dbg_stroke_alpha);
- }
- cairo_fill (cr);
-
/* export gerber */
- cairo_identity_matrix(cr);
for (const auto &poly : s_polys) {
vector<array<double, 2>> out;
for (const auto &p : poly)
@@ -392,7 +350,6 @@ void gerbolyze::SVGDocument::export_svg_path(const RenderSettings &rset, const p
});
*polygon_sink << (stroke_color == GRB_DARK ? GRB_POL_DARK : GRB_POL_CLEAR) << out;
}
- cairo_restore(cr);
}
}
}
@@ -409,7 +366,8 @@ void gerbolyze::SVGDocument::render(const RenderSettings &rset, PolygonSink &sin
c.AddPaths(vb_paths, ptSubject, /* closed */ true);
ClipperLib::IntRect bbox = c.GetBounds();
cerr << "document viewbox clip: bbox={" << bbox.left << ", " << bbox.top << "} - {" << bbox.right << ", " << bbox.bottom << "}" << endl;
- export_svg_group(rset, root_elem, vb_paths, sel, false, true);
+ xform2d xf;
+ export_svg_group(xf, rset, root_elem, vb_paths, sel, false, true);
sink.footer();
}
@@ -420,31 +378,6 @@ void gerbolyze::SVGDocument::render_to_list(const RenderSettings &rset, vector<p
render(rset, sink, sel);
}
-void gerbolyze::SVGDocument::setup_debug_output(string filename) {
- /* Setup cairo to draw into a SVG surface (for debugging). For actual rendering, something like a recording surface
- * would work fine, too. */
- /* Cairo expects the SVG surface size to be given in pt (72.0 pt = 1.0 in = 25.4 mm) */
- const char *fn = filename.empty() ? nullptr : filename.c_str();
- assert (!cr);
- assert (!surface);
- surface = cairo_svg_surface_create(fn, page_w_mm / 25.4 * 72.0, page_h_mm / 25.4 * 72.0);
- cr = cairo_create (surface);
- /* usvg returns "pixels", cairo thinks we draw "points" at 72.0 pt per inch. */
- cairo_scale(cr, page_w / vb_w * 72.0 / assumed_usvg_dpi, page_h / vb_h * 72.0 / assumed_usvg_dpi);
-
- cairo_translate(cr, -vb_x, -vb_y);
-
- /* Store viewport transform and reset cairo's active transform. We have to do this since we have to render out all
- * gerber primitives in mm, not px and most gerber primitives we export pass through Cairo at some point.
- *
- * We manually apply this viewport transform every time for debugging we actually use Cairo to export SVG. */
- cairo_get_matrix(cr, &viewport_matrix);
- cairo_identity_matrix(cr);
-
- cairo_set_line_width (cr, 0.1);
- cairo_set_source_rgba (cr, 1.0, 0.0, 0.0, 1.0);
-}
-
void gerbolyze::SVGDocument::setup_viewport_clip() {
/* Set up view port clip path */
Path vb_path;
@@ -468,8 +401,8 @@ void gerbolyze::SVGDocument::load_patterns() {
void gerbolyze::SVGDocument::load_clips(const RenderSettings &rset) {
/* Set up document-wide clip path registry: Extract clip path definitions from <defs> element */
for (const auto &node : defs_node.children("clipPath")) {
- cairo_save(cr);
- apply_cairo_transform_from_svg(cr, node.attribute("transform").value());
+
+ xform2d local_xf(node.attribute("transform").value());
string meta_clip_path_id(usvg_id_url(node.attribute("clip-path").value()));
Clipper c;
@@ -481,11 +414,11 @@ void gerbolyze::SVGDocument::load_clips(const RenderSettings &rset) {
for (const auto &child : node.children("path")) {
PolyTree ptree_stroke; /* discarded */
PolyTree ptree_fill;
- cairo_save(cr);
/* TODO: we currently only support clipPathUnits="userSpaceOnUse", not "objectBoundingBox". */
- apply_cairo_transform_from_svg(cr, child.attribute("transform").value());
- load_svg_path(cr, child, ptree_stroke, ptree_fill, rset.curve_tolerance_mm);
- cairo_restore (cr);
+ xform2d child_xf(local_xf);
+ child_xf.transform(xform2d(child.attribute("transform").value()));
+
+ load_svg_path(child_xf, child, ptree_stroke, ptree_fill, rset.curve_tolerance_mm);
Paths paths;
PolyTreeToPaths(ptree_fill, paths);
@@ -510,8 +443,6 @@ void gerbolyze::SVGDocument::load_clips(const RenderSettings &rset) {
c.Execute(ctUnion, ptree, pftNonZero, pftNonZero);
/* Insert into document clip path map */
PolyTreeToPaths(ptree, clip_path_map[node.attribute("id").value()]);
-
- cairo_restore(cr);
}
}
diff --git a/svg-flatten/src/svg_geom.cpp b/svg-flatten/src/svg_geom.cpp
index 0ca66fe..f836567 100644
--- a/svg-flatten/src/svg_geom.cpp
+++ b/svg-flatten/src/svg_geom.cpp
@@ -24,7 +24,6 @@
#include <sstream>
#include <queue>
#include <assert.h>
-#include <cairo.h>
#include "svg_import_defs.h"
using namespace ClipperLib;
@@ -159,24 +158,3 @@ void gerbolyze::combine_clip_paths(Paths &in_a, Paths &in_b, Paths &out) {
c.Execute(ctIntersection, out, pftNonZero);
}
-/* Transform given clipper paths under the given cairo transform. If no transform is given, use cairo's current
- * user-to-device transform. */
-void gerbolyze::transform_paths(cairo_t *cr, Paths &paths, cairo_matrix_t *mat) {
- cairo_save(cr);
- if (mat != nullptr) {
- cairo_set_matrix(cr, mat);
- }
-
- for (Path &p : paths) {
- transform(p.begin(), p.end(), p.begin(),
- [cr](IntPoint p) -> IntPoint {
- double x = p.X / clipper_scale, y = p.Y / clipper_scale;
- cairo_user_to_device(cr, &x, &y);
- return { (cInt)round(x * clipper_scale), (cInt)round(y * clipper_scale) };
- });
- }
-
- cairo_restore(cr);
-}
-
-
diff --git a/svg-flatten/src/svg_geom.h b/svg-flatten/src/svg_geom.h
index 5f00479..1e9f5cd 100644
--- a/svg-flatten/src/svg_geom.h
+++ b/svg-flatten/src/svg_geom.h
@@ -18,19 +18,17 @@
#pragma once
-#include <cairo.h>
#include <clipper.hpp>
#include <pugixml.hpp>
namespace gerbolyze {
-ClipperLib::IntRect get_paths_bounds(const ClipperLib::Paths &paths);
-enum ClipperLib::PolyFillType clipper_fill_rule(const pugi::xml_node &node);
-enum ClipperLib::EndType clipper_end_type(const pugi::xml_node &node);
-enum ClipperLib::JoinType clipper_join_type(const pugi::xml_node &node);
-void dehole_polytree(ClipperLib::PolyTree &ptree, ClipperLib::Paths &out);
-void combine_clip_paths(ClipperLib::Paths &in_a, ClipperLib::Paths &in_b, ClipperLib::Paths &out);
-void transform_paths(cairo_t *cr, ClipperLib::Paths &paths, cairo_matrix_t *mat=nullptr);
+ ClipperLib::IntRect get_paths_bounds(const ClipperLib::Paths &paths);
+ enum ClipperLib::PolyFillType clipper_fill_rule(const pugi::xml_node &node);
+ enum ClipperLib::EndType clipper_end_type(const pugi::xml_node &node);
+ enum ClipperLib::JoinType clipper_join_type(const pugi::xml_node &node);
+ void dehole_polytree(ClipperLib::PolyTree &ptree, ClipperLib::Paths &out);
+ void combine_clip_paths(ClipperLib::Paths &in_a, ClipperLib::Paths &in_b, ClipperLib::Paths &out);
} /* namespace gerbolyze */
diff --git a/svg-flatten/src/svg_import_util.cpp b/svg-flatten/src/svg_import_util.cpp
index 2193830..cb60482 100644
--- a/svg-flatten/src/svg_import_util.cpp
+++ b/svg-flatten/src/svg_import_util.cpp
@@ -22,26 +22,6 @@
using namespace std;
-void gerbolyze::print_matrix(cairo_t *cr, bool print_examples) {
- cairo_matrix_t mat;
- cairo_get_matrix(cr, &mat);
- cerr << " xform matrix = { xx=" << mat.xx << ", yx=" << mat.yx << ", xy=" << mat.xy << ", yy=" << mat.yy << ", x0=" << mat.x0 << ", y0=" << mat.y0 << " }" << endl;
- if (print_examples) {
- double x=0, y=0;
- cairo_user_to_device(cr, &x, &y);
- cerr << " (0, 0) -> (" << x << ", " << y << ")" << endl;
- x = 1, y = 0;
- cairo_user_to_device(cr, &x, &y);
- cerr << " (1, 0) -> (" << x << ", " << y << ")" << endl;
- x = 0, y = 1;
- cairo_user_to_device(cr, &x, &y);
- cerr << " (0, 1) -> (" << x << ", " << y << ")" << endl;
- x = 1, y = 1;
- cairo_user_to_device(cr, &x, &y);
- cerr << " (1, 1) -> (" << x << ", " << y << ")" << endl;
- }
-}
-
/* Read a double value formatted like usvg formats doubles from an SVG attribute */
double gerbolyze::usvg_double_attr(const pugi::xml_node &node, const char *attr, double default_value) {
const auto *val = node.attribute(attr).value();
@@ -69,34 +49,6 @@ gerbolyze::RelativeUnits gerbolyze::map_str_to_units(string str, gerbolyze::Rela
return default_val;
}
-void gerbolyze::load_cairo_matrix_from_svg(const string &transform, cairo_matrix_t &mat) {
- if (transform.empty()) {
- cairo_matrix_init_identity(&mat);
- return;
- }
-
- string start("matrix(");
- assert(transform.substr(0, start.length()) == start);
- assert(transform.back() == ')');
- const string &foo = transform.substr(start.length(), transform.length());
- const string &bar = foo.substr(0, foo.length() - 1);
-
- istringstream xform(bar);
-
- double a, c, e,
- b, d, f;
- xform >> a >> b >> c >> d >> e >> f;
- assert(!xform.fail());
-
- cairo_matrix_init(&mat, a, b, c, d, e, f);
-}
-
-void gerbolyze::apply_cairo_transform_from_svg(cairo_t *cr, const string &transform) {
- cairo_matrix_t mat;
- load_cairo_matrix_from_svg(transform, mat);
- cairo_transform(cr, &mat);
-}
-
/* Cf. https://tools.ietf.org/html/rfc2397 */
string gerbolyze::parse_data_iri(const string &data_url) {
if (data_url.rfind("data:", 0) == string::npos) /* check if url starts with "data:" */
@@ -112,12 +64,3 @@ string gerbolyze::parse_data_iri(const string &data_url) {
return base64_decode(data_url.substr(b64_begin));
}
-/* for debug svg output */
-void gerbolyze::apply_viewport_matrix(cairo_t *cr, cairo_matrix_t &viewport_matrix) {
- /* Multiply viewport matrix *from the left*, i.e. as if it had been applied *before* the currently set matrix. */
- cairo_matrix_t old_matrix;
- cairo_get_matrix(cr, &old_matrix);
- cairo_set_matrix(cr, &viewport_matrix);
- cairo_transform(cr, &old_matrix);
-}
-
diff --git a/svg-flatten/src/svg_import_util.h b/svg-flatten/src/svg_import_util.h
index a6cd2d6..6c67205 100644
--- a/svg-flatten/src/svg_import_util.h
+++ b/svg-flatten/src/svg_import_util.h
@@ -29,11 +29,7 @@
#include <sstream>
#include <regex>
-#include <pango/pangocairo.h>
-#include <cairo-svg.h>
-
#include <clipper.hpp>
-#include "cairo_clipper.hpp"
#include <pugixml.hpp>
@@ -48,14 +44,10 @@ enum RelativeUnits {
SVG_ObjectBoundingBox,
};
-void print_matrix(cairo_t *cr, bool print_examples=false);
double usvg_double_attr(const pugi::xml_node &node, const char *attr, double default_value=0.0);
std::string usvg_id_url(std::string attr);
RelativeUnits map_str_to_units(std::string str, RelativeUnits default_val=SVG_UnknownUnits);
-void load_cairo_matrix_from_svg(const std::string &transform, cairo_matrix_t &mat);
-void apply_cairo_transform_from_svg(cairo_t *cr, const std::string &transform);
std::string parse_data_iri(const std::string &data_url);
-void apply_viewport_matrix(cairo_t *cr, cairo_matrix_t &viewport_matrix);
} /* namespace gerbolyze */
diff --git a/svg-flatten/src/svg_path.cpp b/svg-flatten/src/svg_path.cpp
index f27f650..8b5be9e 100644
--- a/svg-flatten/src/svg_path.cpp
+++ b/svg-flatten/src/svg_path.cpp
@@ -21,28 +21,27 @@
#include <iostream>
#include <iomanip>
#include <sstream>
-#include "cairo_clipper.hpp"
+
#include "svg_import_defs.h"
#include "svg_path.h"
#include "flatten.hpp"
using namespace std;
-static pair<bool, bool> path_to_clipper_via_cairo(cairo_t *cr, ClipperLib::Clipper &c_stroke, ClipperLib::Clipper &c_fill, const pugi::char_t *path_data, double distance_tolerance_mm) {
- istringstream d(path_data);
+static pair<bool, bool> flatten_path(gerbolyze::xform2d &mat, ClipperLib::Clipper &c_stroke, ClipperLib::Clipper &c_fill, const pugi::char_t *path_data, double distance_tolerance_mm) {
+ istringstream in(path_data);
string cmd;
- double x, y, c1x, c1y, c2x, c2y;
+ gerbolyze::d2p a, b, c, d;
ClipperLib::Path in_poly;
- double scale = pow(10.0, CAIRO_PRECISION);
bool first = true;
bool has_closed = false;
int num_subpaths = 0;
- while (!d.eof()) {
- d >> cmd;
- assert (!d.fail());
+ while (!in.eof()) {
+ in >> cmd;
+ assert (!in.fail());
assert(!first || cmd == "M");
if (cmd == "Z") { /* Close path */
@@ -61,46 +60,59 @@ static pair<bool, bool> path_to_clipper_via_cairo(cairo_t *cr, ClipperLib::Clipp
in_poly.clear();
}
- d >> x >> y;
+ in >> a[0] >> a[1];
+ assert (!in.fail()); /* guaranteed by usvg */
+
/* We need to transform all points ourselves here, and cannot use the transform feature of cairo_to_clipper:
* Our transform may contain offsets, and clipper only passes its data into cairo's transform functions
* after scaling up to its internal fixed-point ints, but it does not scale the transform accordingly. This
* means a scale/rotation we set before calling clipper works out fine, but translations get lost as they
* get scaled by something like 1e-6.
*/
- cairo_user_to_device(cr, &x, &y);
- assert (!d.fail());
+ a = mat.doc2phys(a);
- in_poly.emplace_back(ClipperLib::IntPoint{(ClipperLib::cInt)round(x*scale), (ClipperLib::cInt)round(y*scale)});
+ in_poly.emplace_back(ClipperLib::IntPoint{
+ (ClipperLib::cInt)round(a[0]*clipper_scale),
+ (ClipperLib::cInt)round(a[1]*clipper_scale)
+ });
} else if (cmd == "L") { /* Line to */
- d >> x >> y;
- cairo_user_to_device(cr, &x, &y);
- assert (!d.fail());
+ in >> a[0] >> a[1];
+ assert (!in.fail()); /* guaranteed by usvg */
- in_poly.emplace_back(ClipperLib::IntPoint{(ClipperLib::cInt)round(x*scale), (ClipperLib::cInt)round(y*scale)});
+ a = mat.doc2phys(a);
+ in_poly.emplace_back(ClipperLib::IntPoint{
+ (ClipperLib::cInt)round(a[0]*clipper_scale),
+ (ClipperLib::cInt)round(a[1]*clipper_scale)
+ });
} else { /* Curve to */
- double sx = x, sy = y;
- assert(cmd == "C");
- d >> c1x >> c1y; /* first control point */
- cairo_user_to_device(cr, &c1x, &c1y);
- d >> c2x >> c2y; /* second control point */
- cairo_user_to_device(cr, &c2x, &c2y);
- d >> x >> y; /* end point */
- cairo_user_to_device(cr, &x, &y);
- assert (!d.fail());
+ assert(cmd == "C"); /* guaranteed by usvg */
+ in >> b[0] >> b[1]; /* first control point */
+ in >> c[0] >> c[1]; /* second control point */
+ in >> d[0] >> d[1]; /* end point */
+ assert (!in.fail()); /* guaranteed by usvg */
+
+ b = mat.doc2phys(b);
+ c = mat.doc2phys(c);
+ d = mat.doc2phys(d);
gerbolyze::curve4_div c4div(distance_tolerance_mm);
- c4div.run(sx, sy, c1x, c1y, c2x, c2y, x, y);
+ c4div.run(a[0], a[1], b[0], b[1], c[0], c[1], d[0], d[1]);
for (auto &pt : c4div.points()) {
- in_poly.emplace_back(ClipperLib::IntPoint{(ClipperLib::cInt)round(pt[0]*scale), (ClipperLib::cInt)round(pt[1]*scale)});
+ in_poly.emplace_back(ClipperLib::IntPoint{
+ (ClipperLib::cInt)round(pt[0]*clipper_scale),
+ (ClipperLib::cInt)round(pt[1]*clipper_scale)
+ });
}
+
+ a = d; /* set last point to curve end point */
}
first = false;
}
+
if (!in_poly.empty()) {
c_stroke.AddPath(in_poly, ClipperLib::ptSubject, false);
c_fill.AddPath(in_poly, ClipperLib::ptSubject, true);
@@ -110,20 +122,18 @@ static pair<bool, bool> path_to_clipper_via_cairo(cairo_t *cr, ClipperLib::Clipp
return {has_closed, num_subpaths > 1};
}
-void gerbolyze::load_svg_path(cairo_t *cr, const pugi::xml_node &node, ClipperLib::PolyTree &ptree_stroke, ClipperLib::PolyTree &ptree_fill, double curve_tolerance) {
+void gerbolyze::load_svg_path(xform2d &mat, const pugi::xml_node &node, ClipperLib::PolyTree &ptree_stroke, ClipperLib::PolyTree &ptree_fill, double curve_tolerance) {
auto *path_data = node.attribute("d").value();
auto fill_rule = clipper_fill_rule(node);
/* For open paths, clipper does not correctly remove self-intersections. Thus, we pass everything into
* clipper twice: Once with all paths set to "closed" to compute fill areas, and once with correct
* open/closed properties for stroke offsetting. */
- cairo_set_fill_rule(cr, CAIRO_FILL_RULE_WINDING);
-
ClipperLib::Clipper c_stroke;
ClipperLib::Clipper c_fill;
c_stroke.StrictlySimple(true);
c_fill.StrictlySimple(true);
- auto res = path_to_clipper_via_cairo(cr, c_stroke, c_fill, path_data, curve_tolerance);
+ auto res = flatten_path(mat, c_stroke, c_fill, path_data, curve_tolerance);
bool has_closed = res.first, has_multiple = res.second;
if (!has_closed && !has_multiple) {
diff --git a/svg-flatten/src/svg_path.h b/svg-flatten/src/svg_path.h
index 2ab29ec..611f517 100644
--- a/svg-flatten/src/svg_path.h
+++ b/svg-flatten/src/svg_path.h
@@ -19,11 +19,11 @@
#pragma once
#include <vector>
-#include <cairo.h>
#include "svg_geom.h"
+#include "geom2d.hpp"
namespace gerbolyze {
-void load_svg_path(cairo_t *cr, const pugi::xml_node &node, ClipperLib::PolyTree &ptree_stroke, ClipperLib::PolyTree &ptree_fill, double curve_tolerance);
+void load_svg_path(xform2d &mat, const pugi::xml_node &node, ClipperLib::PolyTree &ptree_stroke, ClipperLib::PolyTree &ptree_fill, double curve_tolerance);
void parse_dasharray(const pugi::xml_node &node, std::vector<double> &out);
void dash_path(const ClipperLib::Path &in, ClipperLib::Paths &out, const std::vector<double> dasharray, double dash_offset=0.0);
}
diff --git a/svg-flatten/src/svg_pattern.cpp b/svg-flatten/src/svg_pattern.cpp
index b62df28..a122975 100644
--- a/svg-flatten/src/svg_pattern.cpp
+++ b/svg-flatten/src/svg_pattern.cpp
@@ -32,7 +32,14 @@ gerbolyze::Pattern::Pattern(const pugi::xml_node &node, SVGDocument &doc) : _nod
y = usvg_double_attr(node, "y");
w = usvg_double_attr(node, "width");
h = usvg_double_attr(node, "height");
- patternTransform = node.attribute("patternTransform").value();
+
+ patternTransform = xform2d(node.attribute("patternTransform").value());
+
+ bool invert_success = false;
+ patternTransform_inv = xform2d(patternTransform).invert(&invert_success);
+ if (!invert_success) {
+ cerr << "Warning: Cannot invert patternTransform matrix on pattern \"" << node.attribute("id").value() << "\"." << endl;
+ }
string vb_s(node.attribute("viewBox").value());
has_vb = !vb_s.empty();
@@ -47,24 +54,15 @@ gerbolyze::Pattern::Pattern(const pugi::xml_node &node, SVGDocument &doc) : _nod
/* Tile pattern into gerber. Note that this function may be called several times in case the pattern is
* referenced from multiple places, so we must not clobber any of the object's state. */
-void gerbolyze::Pattern::tile (const gerbolyze::RenderSettings &rset, ClipperLib::Paths &clip) {
+void gerbolyze::Pattern::tile (xform2d &mat, const gerbolyze::RenderSettings &rset, ClipperLib::Paths &clip) {
assert(doc);
- cairo_t *cr = doc->cairo();
- assert(cr);
- cairo_save(cr);
/* Transform x, y, w, h from pattern coordinate space into parent coordinates by applying the inverse
* patternTransform. This is necessary so we iterate over the correct bounds when tiling below */
- cairo_matrix_t mat;
- load_cairo_matrix_from_svg(patternTransform, mat);
- if (cairo_matrix_invert(&mat) != CAIRO_STATUS_SUCCESS) {
- cerr << "Cannot invert patternTransform matrix on pattern \"" << _node.attribute("id").value() << "\"." << endl;
- cairo_restore(cr);
- }
- double inst_x = x, inst_y = y, inst_w = w, inst_h = h;
- cairo_user_to_device(cr, &inst_x, &inst_y);
- cairo_user_to_device_distance(cr, &inst_w, &inst_h);
- cairo_restore(cr);
+ d2p pos_xf = patternTransform_inv.doc2phys(d2p{x, y});
+ double inst_x = pos_xf[0], inst_y = pos_xf[1];
+ double inst_w = patternTransform_inv.doc2phys_dist(w);
+ double inst_h = patternTransform_inv.doc2phys_dist(h);
ClipperLib::IntRect clip_bounds = get_paths_bounds(clip);
double bx = clip_bounds.left / clipper_scale;
@@ -80,9 +78,9 @@ void gerbolyze::Pattern::tile (const gerbolyze::RenderSettings &rset, ClipperLib
}
/* Switch to pattern coordinates */
- cairo_save(cr);
- cairo_translate(cr, bx, by);
- apply_cairo_transform_from_svg(cr, patternTransform);
+ xform2d local_xf(mat);
+ local_xf.translate(bx, by);
+ local_xf.transform(patternTransform);
/* Iterate over all pattern tiles in pattern coordinates */
for (double inst_off_x = fmod(inst_x, inst_w) - inst_w;
@@ -93,21 +91,19 @@ void gerbolyze::Pattern::tile (const gerbolyze::RenderSettings &rset, ClipperLib
inst_off_y < bh + inst_h;
inst_off_y += inst_h) {
- cairo_save(cr);
+ xform2d elem_xf(local_xf);
/* Change into this individual tile's coordinate system */
- cairo_translate(cr, inst_off_x, inst_off_y);
+ elem_xf.translate(inst_off_x, inst_off_y);
if (has_vb) {
- cairo_translate(cr, vb_x, vb_y);
- cairo_scale(cr, inst_w / vb_w, inst_h / vb_h);
+ elem_xf.translate(vb_x, vb_y);
+ elem_xf.scale(inst_w / vb_w, inst_h / vb_h);
} else if (patternContentUnits == SVG_ObjectBoundingBox) {
- cairo_scale(cr, bw, bh);
+ elem_xf.scale(bw, bh);
}
/* Export the pattern tile's content like a group */
- doc->export_svg_group(rset, _node, clip);
- cairo_restore(cr);
+ doc->export_svg_group(elem_xf, rset, _node, clip);
}
}
- cairo_restore(cr);
}
diff --git a/svg-flatten/src/svg_pattern.h b/svg-flatten/src/svg_pattern.h
index e6a6fe2..56444dd 100644
--- a/svg-flatten/src/svg_pattern.h
+++ b/svg-flatten/src/svg_pattern.h
@@ -19,10 +19,12 @@
#pragma once
#include <string>
-#include <cairo.h>
+
#include <pugixml.hpp>
#include <clipper.hpp>
+
#include "svg_import_util.h"
+#include "geom2d.hpp"
namespace gerbolyze {
@@ -34,13 +36,14 @@ public:
Pattern() {}
Pattern(const pugi::xml_node &node, SVGDocument &doc);
- void tile (const gerbolyze::RenderSettings &rset, ClipperLib::Paths &clip);
+ void tile (xform2d &mat, const gerbolyze::RenderSettings &rset, ClipperLib::Paths &clip);
private:
double x, y, w, h;
double vb_x, vb_y, vb_w, vb_h;
bool has_vb;
- std::string patternTransform;
+ xform2d patternTransform;
+ xform2d patternTransform_inv;
enum RelativeUnits patternUnits;
enum RelativeUnits patternContentUnits;
const pugi::xml_node _node;
diff --git a/svg-flatten/src/vec_core.cpp b/svg-flatten/src/vec_core.cpp
index add94b4..6951e4f 100644
--- a/svg-flatten/src/vec_core.cpp
+++ b/svg-flatten/src/vec_core.cpp
@@ -46,15 +46,6 @@ ImageVectorizer *gerbolyze::makeVectorizer(const std::string &name) {
return nullptr;
}
-/* debug function */
-static void dbg_show_cv_image(cv::Mat &img) {
- string windowName = "Debug image";
- cv::namedWindow(windowName);
- cv::imshow(windowName, img);
- cv::waitKey(0);
- cv::destroyWindow(windowName);
-}
-
/* From jcv voronoi README */
static void voronoi_relax_points(const jcv_diagram* diagram, jcv_point* points) {
const jcv_site* sites = jcv_diagram_get_sites(diagram);
@@ -113,17 +104,19 @@ cv::Mat read_img_opencv(const pugi::xml_node &node) {
return img;
}
-void gerbolyze::draw_bg_rect(cairo_t *cr, double width, double height, ClipperLib::Paths &clip_path, PolygonSink &sink, cairo_matrix_t &viewport_matrix) {
- /* For both our debug SVG output and for the gerber output, we have to paint the image's bounding box in black as
- * background for our halftone blobs. We cannot simply draw a rect here, though. Instead we have to first intersect
- * the bounding box with the clip path we get from the caller, then we have to translate it into Cairo-SVG's
- * document units. */
- /* First, setup the bounding box rectangle in our local px coordinate space. */
+void gerbolyze::draw_bg_rect(xform2d &mat, double width, double height, ClipperLib::Paths &clip_path, PolygonSink &sink) {
+ /* For our output to look correct, we have to paint the image's bounding box in black as background for our halftone
+ * blobs. We cannot simply draw a rect here, though. Instead we have to first intersect the bounding box with the
+ * clip path we get from the caller.
+ *
+ * First, setup the bounding box rectangle in our local px coordinate space. */
ClipperLib::Path rect_path;
for (auto &elem : vector<pair<double, double>> {{0, 0}, {width, 0}, {width, height}, {0, height}}) {
- double x = elem.first, y = elem.second;
- cairo_user_to_device(cr, &x, &y);
- rect_path.push_back({ (ClipperLib::cInt)round(x * clipper_scale), (ClipperLib::cInt)round(y * clipper_scale) });
+ d2p xf(mat.doc2phys(d2p{elem.first, elem.second}));
+ rect_path.push_back({
+ (ClipperLib::cInt)round(xf[0] * clipper_scale),
+ (ClipperLib::cInt)round(xf[1] * clipper_scale)
+ });
}
/* Intersect the bounding box with the caller's clip path */
@@ -137,17 +130,7 @@ void gerbolyze::draw_bg_rect(cairo_t *cr, double width, double height, ClipperLi
c.StrictlySimple(true);
c.Execute(ClipperLib::ctIntersection, rect_out, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
- /* Finally, translate into Cairo-SVG's document units and draw. */
- cairo_save(cr);
- cairo_set_matrix(cr, &viewport_matrix);
- cairo_new_path(cr);
- ClipperLib::cairo::clipper_to_cairo(rect_out, cr, CAIRO_PRECISION, ClipperLib::cairo::tNone);
- cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
- /* First, draw into SVG */
- cairo_fill(cr);
- cairo_restore(cr);
-
- /* Second, draw into gerber. */
+ /* draw into gerber. */
for (const auto &poly : rect_out) {
vector<array<double, 2>> out;
for (const auto &p : poly)
@@ -178,17 +161,17 @@ void gerbolyze::draw_bg_rect(cairo_t *cr, double width, double height, ClipperLi
* 4. It scales each of these voronoi cell polygons to match the input images brightness at the spot covered by this
* cell.
*/
-void gerbolyze::VoronoiVectorizer::vectorize_image(cairo_t *cr, const pugi::xml_node &node, ClipperLib::Paths &clip_path, cairo_matrix_t &viewport_matrix, PolygonSink &sink, double min_feature_size_px) {
+void gerbolyze::VoronoiVectorizer::vectorize_image(xform2d &mat, const pugi::xml_node &node, ClipperLib::Paths &clip_path, PolygonSink &sink, double min_feature_size_px) {
double x, y, width, height;
parse_img_meta(node, x, y, width, height);
cv::Mat img = read_img_opencv(node);
if (img.empty())
return;
- cairo_save(cr);
/* Set up target transform using SVG transform and x/y attributes */
- apply_cairo_transform_from_svg(cr, node.attribute("transform").value());
- cairo_translate(cr, x, y);
+ xform2d local_xf(mat);
+ local_xf.transform(xform2d(node.attribute("transform").value()));
+ local_xf.translate(x, y);
double orig_rows = img.rows;
double orig_cols = img.cols;
@@ -200,11 +183,9 @@ void gerbolyze::VoronoiVectorizer::vectorize_image(cairo_t *cr, const pugi::xml_
scale_x, scale_y, off_x, off_y, orig_cols, orig_rows);
/* Adjust minimum feature size given in mm and translate into px document units in our local coordinate system. */
- double f_x = min_feature_size_px, f_y = 0;
- cairo_device_to_user_distance(cr, &f_x, &f_y);
- min_feature_size_px = sqrt(f_x*f_x + f_y*f_y);
+ min_feature_size_px = local_xf.doc2phys_dist(min_feature_size_px);
- draw_bg_rect(cr, width, height, clip_path, sink, viewport_matrix);
+ draw_bg_rect(local_xf, width, height, clip_path, sink);
/* Set up a poisson-disc sampled point "grid" covering the image. Calculate poisson disc parameters from given
* minimum feature size. */
@@ -272,7 +253,7 @@ void gerbolyze::VoronoiVectorizer::vectorize_image(cairo_t *cr, const pugi::xml_
/* FIXME: This is a workaround for a memory corruption bug that happens with the square-grid setting. When using
* square-grid on a fairly small test image, sometimes sites[i].index will be out of bounds here.
*/
- if (sites[i].index < fill_factors.size())
+ if (sites[i].index < (int)fill_factors.size())
fill_factors[sites[i].index] = sqrt(pxd);
}
@@ -331,23 +312,25 @@ void gerbolyze::VoronoiVectorizer::vectorize_image(cairo_t *cr, const pugi::xml_
if (last_fill_factor != fill_factor) {
/* Fill factor was adjusted since last edge, so generate one extra point so we have a nice radial
* "step". */
- double x = e->pos[0].x;
- double y = e->pos[0].y;
- x = off_x + center.x + (x - center.x) * fill_factor;
- y = off_y + center.y + (y - center.y) * fill_factor;
-
- cairo_user_to_device(cr, &x, &y);
- cell_path.push_back({ (ClipperLib::cInt)round(x * clipper_scale), (ClipperLib::cInt)round(y * clipper_scale) });
+ d2p p = local_xf.doc2phys(d2p{
+ off_x + center.x + (e->pos[0].x - center.x) * fill_factor,
+ off_y + center.y + (e->pos[0].y - center.y) * fill_factor
+ });
+ cell_path.push_back({
+ (ClipperLib::cInt)round(p[0] * clipper_scale),
+ (ClipperLib::cInt)round(p[1] * clipper_scale)
+ });
}
/* Emit endpoint of current edge */
- double x = e->pos[1].x;
- double y = e->pos[1].y;
- x = off_x + center.x + (x - center.x) * fill_factor;
- y = off_y + center.y + (y - center.y) * fill_factor;
-
- cairo_user_to_device(cr, &x, &y);
- cell_path.push_back({ (ClipperLib::cInt)round(x * clipper_scale), (ClipperLib::cInt)round(y * clipper_scale) });
+ d2p p = local_xf.doc2phys(d2p{
+ off_x + center.x + (e->pos[1].x - center.x) * fill_factor,
+ off_y + center.y + (e->pos[1].y - center.y) * fill_factor
+ });
+ cell_path.push_back({
+ (ClipperLib::cInt)round(p[0] * clipper_scale),
+ (ClipperLib::cInt)round(p[1] * clipper_scale)
+ });
j += 1;
last_fill_factor = fill_factor;
@@ -365,16 +348,7 @@ void gerbolyze::VoronoiVectorizer::vectorize_image(cairo_t *cr, const pugi::xml_
c.StrictlySimple(true);
c.Execute(ClipperLib::ctIntersection, polys, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
- /* Export halftone blob to debug svg */
- cairo_save(cr);
- cairo_set_matrix(cr, &viewport_matrix);
- cairo_new_path(cr);
- ClipperLib::cairo::clipper_to_cairo(polys, cr, CAIRO_PRECISION, ClipperLib::cairo::tNone);
- cairo_set_source_rgba(cr, 1, 1, 1, 1);
- cairo_fill(cr);
- cairo_restore(cr);
-
- /* And finally, export halftone blob to gerber. */
+ /* Export halftone blob to gerber. */
for (const auto &poly : polys) {
vector<array<double, 2>> out;
for (const auto &p : poly)
@@ -388,7 +362,6 @@ void gerbolyze::VoronoiVectorizer::vectorize_image(cairo_t *cr, const pugi::xml_
blurred.release();
jcv_diagram_free( &diagram );
delete grid_centers;
- cairo_restore(cr);
}
void gerbolyze::handle_aspect_ratio(string spec, double &scale_x, double &scale_y, double &off_x, double &off_y, double cols, double rows) {
@@ -446,17 +419,18 @@ void gerbolyze::handle_aspect_ratio(string spec, double &scale_x, double &scale_
}
-void gerbolyze::OpenCVContoursVectorizer::vectorize_image(cairo_t *cr, const pugi::xml_node &node, ClipperLib::Paths &clip_path, cairo_matrix_t &viewport_matrix, PolygonSink &sink, double min_feature_size_px) {
+void gerbolyze::OpenCVContoursVectorizer::vectorize_image(xform2d &mat, const pugi::xml_node &node, ClipperLib::Paths &clip_path, PolygonSink &sink, double min_feature_size_px) {
+ (void) min_feature_size_px; /* unused by this vectorizer */
double x, y, width, height;
parse_img_meta(node, x, y, width, height);
cv::Mat img = read_img_opencv(node);
if (img.empty())
return;
- cairo_save(cr);
/* Set up target transform using SVG transform and x/y attributes */
- apply_cairo_transform_from_svg(cr, node.attribute("transform").value());
- cairo_translate(cr, x, y);
+ xform2d local_xf(mat);
+ local_xf.transform(xform2d(node.attribute("transform").value()));
+ local_xf.translate(x, y);
double scale_x = (double)width / (double)img.cols;
double scale_y = (double)height / (double)img.rows;
@@ -465,7 +439,7 @@ void gerbolyze::OpenCVContoursVectorizer::vectorize_image(cairo_t *cr, const pug
handle_aspect_ratio(node.attribute("preserveAspectRatio").value(),
scale_x, scale_y, off_x, off_y, img.cols, img.rows);
- draw_bg_rect(cr, width, height, clip_path, sink, viewport_matrix);
+ draw_bg_rect(local_xf, width, height, clip_path, sink);
vector<vector<cv::Point>> contours;
vector<cv::Vec4i> hierarchy;
@@ -489,10 +463,14 @@ void gerbolyze::OpenCVContoursVectorizer::vectorize_image(cairo_t *cr, const pug
ClipperLib::Path out;
for (const auto &p : contours[i]) {
- double x = off_x + (double)p.x * scale_x;
- double y = off_y + (double)p.y * scale_y;
- cairo_user_to_device(cr, &x, &y);
- out.push_back({ (ClipperLib::cInt)round(x * clipper_scale), (ClipperLib::cInt)round(y * clipper_scale) });
+ d2p q = local_xf.doc2phys(d2p{
+ off_x + (double)p.x * scale_x,
+ off_y + (double)p.y * scale_y
+ });
+ out.push_back({
+ (ClipperLib::cInt)round(q[0] * clipper_scale),
+ (ClipperLib::cInt)round(q[1] * clipper_scale)
+ });
}
ClipperLib::Clipper c;
@@ -504,17 +482,7 @@ void gerbolyze::OpenCVContoursVectorizer::vectorize_image(cairo_t *cr, const pug
ClipperLib::Paths polys;
c.Execute(ClipperLib::ctIntersection, polys, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
- /* Finally, translate into Cairo-SVG's document units and draw. */
- cairo_save(cr);
- cairo_set_matrix(cr, &viewport_matrix);
- cairo_new_path(cr);
- ClipperLib::cairo::clipper_to_cairo(polys, cr, CAIRO_PRECISION, ClipperLib::cairo::tNone);
- cairo_set_source_rgba (cr, 0.0, 0.0, 0.0, 1.0);
- /* First, draw into SVG */
- cairo_fill(cr);
- cairo_restore(cr);
-
- /* Second, draw into gerber. */
+ /* Draw into gerber. */
for (const auto &poly : polys) {
vector<array<double, 2>> out;
for (const auto &p : poly)
@@ -527,8 +495,6 @@ void gerbolyze::OpenCVContoursVectorizer::vectorize_image(cairo_t *cr, const pug
child_stack.pop();
}
-
- cairo_restore(cr);
}
gerbolyze::VectorizerSelectorizer::VectorizerSelectorizer(const string default_vectorizer, const string defs)
diff --git a/svg-flatten/src/vec_core.h b/svg-flatten/src/vec_core.h
index 8267fd1..0d4da12 100644
--- a/svg-flatten/src/vec_core.h
+++ b/svg-flatten/src/vec_core.h
@@ -18,7 +18,6 @@
#pragma once
-#include <cairo.h>
#include <pugixml.hpp>
#include <clipper.hpp>
#include <gerbolyze.hpp>
@@ -30,7 +29,7 @@ namespace gerbolyze {
public:
VoronoiVectorizer(grid_type grid, bool relax=true) : m_relax(relax), m_grid_type(grid) {}
- virtual void vectorize_image(cairo_t *cr, const pugi::xml_node &node, ClipperLib::Paths &clip_path, cairo_matrix_t &viewport_matrix, PolygonSink &sink, double min_feature_size_px);
+ virtual void vectorize_image(xform2d &mat, const pugi::xml_node &node, ClipperLib::Paths &clip_path, PolygonSink &sink, double min_feature_size_px);
private:
double m_relax;
grid_type m_grid_type;
@@ -40,19 +39,19 @@ namespace gerbolyze {
public:
OpenCVContoursVectorizer() {}
- virtual void vectorize_image(cairo_t *cr, const pugi::xml_node &node, ClipperLib::Paths &clip_path, cairo_matrix_t &viewport_matrix, PolygonSink &sink, double min_feature_size_px);
+ virtual void vectorize_image(xform2d &mat, const pugi::xml_node &node, ClipperLib::Paths &clip_path, PolygonSink &sink, double min_feature_size_px);
};
class DevNullVectorizer : public ImageVectorizer {
public:
DevNullVectorizer() {}
- virtual void vectorize_image(cairo_t *, const pugi::xml_node &, ClipperLib::Paths &, cairo_matrix_t &, PolygonSink &, double) {}
+ virtual void vectorize_image(xform2d &, const pugi::xml_node &, ClipperLib::Paths &, PolygonSink &, double) {}
};
void parse_img_meta(const pugi::xml_node &node, double &x, double &y, double &width, double &height);
std::string read_img_data(const pugi::xml_node &node);
- void draw_bg_rect(cairo_t *cr, double width, double height, ClipperLib::Paths &clip_path, PolygonSink &sink, cairo_matrix_t &viewport_matrix);
+ void draw_bg_rect(xform2d &mat, double width, double height, ClipperLib::Paths &clip_path, PolygonSink &sink);
void handle_aspect_ratio(std::string spec, double &scale_x, double &scale_y, double &off_x, double &off_y, double cols, double rows);
}
generated by cgit (git 2.34.1) at 2024-11-23 17:38:20 +0000