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authorjaseg <git@jaseg.de>2021-01-30 20:01:00 +0100
committerjaseg <git@jaseg.de>2021-01-30 20:01:00 +0100
commit2133867c8a86337c6668f9cfff06e4de9bd0bcce (patch)
treea8d1a9b41f7ae18a5a258e139635e4c54a990fc7 /src/vec_core.cpp
parent617a42a674bea6fcd90e19092303ce89acf4206e (diff)
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Reorg: move svg-flatten files into subdir
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diff --git a/src/vec_core.cpp b/src/vec_core.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 <string>
-#include <iostream>
-#include <algorithm>
-#include <vector>
-#include <regex>
-#include <opencv2/opencv.hpp>
-#include "svg_import_util.h"
-#include "vec_core.h"
-#include "svg_import_defs.h"
-#include "jc_voronoi.h"
-
-using namespace gerbolyze;
-using namespace std;
-
-ImageVectorizer *gerbolyze::makeVectorizer(const std::string &name) {
- if (name == "poisson-disc")
- return new VoronoiVectorizer(POISSON_DISC, /* relax */ true);
- else if (name == "hex-grid")
- return new VoronoiVectorizer(HEXGRID, /* relax */ false);
- else if (name == "square-grid")
- return new VoronoiVectorizer(SQUAREGRID, /* relax */ false);
- else if (name == "binary-contours")
- return new OpenCVContoursVectorizer();
- else if (name == "dev-null")
- return new DevNullVectorizer();
-
- 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);
- for (int i=0; i<diagram->numsites; i++) {
- const jcv_site* site = &sites[i];
- jcv_point sum = site->p;
- int count = 1;
-
- const jcv_graphedge* edge = site->edges;
-
- while (edge) {
- sum.x += edge->pos[0].x;
- sum.y += edge->pos[0].y;
- count++;
- edge = edge->next;
- }
-
- points[site->index].x = sum.x / count;
- points[site->index].y = sum.y / count;
- }
-}
-
-void gerbolyze::parse_img_meta(const pugi::xml_node &node, double &x, double &y, double &width, double &height) {
- /* Read XML node attributes */
- x = usvg_double_attr(node, "x", 0.0);
- y = usvg_double_attr(node, "y", 0.0);
- width = usvg_double_attr(node, "width", 0.0);
- height = usvg_double_attr(node, "height", 0.0);
- assert (width > 0 && height > 0);
- cerr << "image elem: w="<<width<<", h="<<height<<endl;
-}
-
-string gerbolyze::read_img_data(const pugi::xml_node &node) {
- /* Read image from data:base64... URL */
- string img_data = parse_data_iri(node.attribute("xlink:href").value());
- if (img_data.empty()) {
- cerr << "Warning: Empty or invalid image element with id \"" << node.attribute("id").value() << "\"" << endl;
- return "";
- }
- return img_data;
-}
-
-cv::Mat read_img_opencv(const pugi::xml_node &node) {
- string img_data = read_img_data(node);
-
- /* slightly annoying round-trip through the std:: and cv:: APIs */
- vector<unsigned char> img_vec(img_data.begin(), img_data.end());
- cv::Mat data_mat(img_vec, true);
- cv::Mat img = cv::imdecode(data_mat, cv::ImreadModes::IMREAD_GRAYSCALE | cv::ImreadModes::IMREAD_ANYDEPTH);
- data_mat.release();
-
- if (img.empty()) {
- cerr << "Warning: Could not decode content of image element with id \"" << node.attribute("id").value() << "\"" << endl;
- }
-
- 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. */
- 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) });
- }
-
- /* Intersect the bounding box with the caller's clip path */
- ClipperLib::Clipper c;
- c.AddPath(rect_path, ClipperLib::ptSubject, /* closed */ true);
- if (!clip_path.empty()) {
- c.AddPaths(clip_path, ClipperLib::ptClip, /* closed */ true);
- }
-
- ClipperLib::Paths rect_out;
- 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. */
- for (const auto &poly : rect_out) {
- vector<array<double, 2>> out;
- for (const auto &p : poly)
- out.push_back(std::array<double, 2>{
- ((double)p.X) / clipper_scale, ((double)p.Y) / clipper_scale
- });
- sink << GRB_POL_CLEAR << out;
- }
-}
-
-
-
-/* Render image into gerber file.
- *
- * This function renders an image into a number of vector primitives emulating the images grayscale brightness by
- * differently sized vector shaped giving an effect similar to halftone printing used in newspapers.
- *
- * On a high level, this function does this in four steps:
- * 1. It preprocesses the source image at the pixel level. This involves several tasks:
- * 1.1. It converts the image to grayscale.
- * 1.2. It scales the image up or down to match the given minimum feature size.
- * 1.3. It applies a blur depending on the given minimum feature size to prevent aliasing artifacts.
- * 2. It randomly spread points across the image using poisson disc sampling. This yields points that have a fairly even
- * average distance to each other across the image, and that have a guaranteed minimum distance that depends on
- * minimum feature size.
- * 3. It calculates a voronoi map based on this set of points and it calculats the polygon shape of each cell of the
- * voronoi map.
- * 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) {
- 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);
-
- double orig_rows = img.rows;
- double orig_cols = img.cols;
- double scale_x = (double)width / orig_cols;
- double scale_y = (double)height / orig_rows;
- double off_x = 0;
- double off_y = 0;
- handle_aspect_ratio(node.attribute("preserveAspectRatio").value(),
- 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);
-
- draw_bg_rect(cr, width, height, clip_path, sink, viewport_matrix);
-
- /* Set up a poisson-disc sampled point "grid" covering the image. Calculate poisson disc parameters from given
- * minimum feature size. */
- double grayscale_overhead = 0.8; /* fraction of distance between two adjacent cell centers that is reserved for
- grayscale interpolation. Larger values -> better grayscale resolution,
- larger cells. */
- double center_distance = min_feature_size_px * 2.0 * (1.0 / (1.0-grayscale_overhead));
- vector<d2p> *grid_centers = get_sampler(m_grid_type)(scale_x * orig_cols, scale_y*orig_rows, center_distance);
- //vector<d2p> *grid_centers = sample_poisson_disc(width, height, min_feature_size_px * 2.0 * 2.0);
- //vector<d2p> *grid_centers = sample_hexgrid(width, height, center_distance);
- //vector<d2p> *grid_centers = sample_squaregrid(width, height, center_distance);
-
- /* Target factor between given min_feature_size and intermediate image pixels,
- * i.e. <scale_featuresize_factor> px ^= min_feature_size */
- double scale_featuresize_factor = 3.0;
- /* TODO: support for preserveAspectRatio attribute */
- double px_w = width / min_feature_size_px * scale_featuresize_factor;
- double px_h = height / min_feature_size_px * scale_featuresize_factor;
-
- /* Scale intermediate image (step 1.2) to have <scale_featuresize_factor> pixels per min_feature_size. */
- cv::Mat scaled(cv::Size{(int)round(px_w), (int)round(px_h)}, img.type());
- cv::resize(img, scaled, scaled.size(), 0, 0);
- cerr << "scaled " << img.cols << ", " << img.rows << " -> " << scaled.cols << ", " << scaled.rows << endl;
- img.release();
-
- /* Blur image with a kernel larger than our minimum feature size to avoid aliasing. */
- cv::Mat blurred(scaled.size(), scaled.type());
- int blur_size = (int)ceil(fmax(scaled.cols / width, scaled.rows / height) * center_distance);
- if (blur_size%2 == 0)
- blur_size += 1;
- cerr << "blur size " << blur_size << endl;
- cv::GaussianBlur(scaled, blurred, {blur_size, blur_size}, 0, 0);
- scaled.release();
-
- /* Calculate voronoi diagram for the grid generated above. */
- jcv_diagram diagram;
- memset(&diagram, 0, sizeof(jcv_diagram));
- cerr << "adjusted scale " << scale_x << " " << scale_y << endl;
- cerr << "voronoi clip rect " << (scale_x * orig_cols) << " " << (scale_y * orig_rows) << endl;
- jcv_rect rect {{0.0, 0.0}, {scale_x * orig_cols, scale_y * orig_rows}};
- jcv_point *pts = reinterpret_cast<jcv_point *>(grid_centers->data()); /* hackety hack */
- jcv_diagram_generate(grid_centers->size(), pts, &rect, 0, &diagram);
- /* Relax points, i.e. wiggle them around a little bit to equalize differences between cell sizes a little bit. */
- if (m_relax)
- voronoi_relax_points(&diagram, pts);
- memset(&diagram, 0, sizeof(jcv_diagram));
- jcv_diagram_generate(grid_centers->size(), pts, &rect, 0, &diagram);
-
- /* For each voronoi cell calculated above, find the brightness of the blurred image pixel below its center. We do
- * not have to average over the entire cell's area here: The blur is doing a good approximation of that while being
- * simpler and faster.
- *
- * We do this step before generating the cell poygons below because we have to look up a cell's neighbor's fill
- * factor during gap filling for minimum feature size preservation. */
- vector<double> fill_factors(diagram.numsites); /* Factor to be multiplied with site polygon radius to yield target
- fill level */
- const jcv_site* sites = jcv_diagram_get_sites(&diagram);
- int j = 0;
- for (int i=0; i<diagram.numsites; i++) {
- const jcv_point center = sites[i].p;
-
- double pxd = (double)blurred.at<unsigned char>(
- (int)round(center.y / (scale_y * orig_rows / blurred.rows)),
- (int)round(center.x / (scale_x * orig_cols / blurred.cols))) / 255.0;
- /* 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())
- fill_factors[sites[i].index] = sqrt(pxd);
- }
-
- /* Minimum gap between adjacent scaled site polygons. */
- double min_gap_px = min_feature_size_px;
- vector<double> adjusted_fill_factors;
- adjusted_fill_factors.reserve(32); /* Vector to hold adjusted fill factors for each edge for gap filling */
- /* now iterate over all voronoi cells again to generate each cell's scaled polygon halftone blob. */
- for (int i=0; i<diagram.numsites; i++) {
- const jcv_point center = sites[i].p;
- double fill_factor_ours = fill_factors[sites[i].index];
-
- /* Do not render halftone blobs that are too small */
- if (fill_factor_ours * 0.5 * center_distance < min_gap_px)
- continue;
-
- /* Iterate over this cell's edges. For each edge, check the gap that would result between this cell's halftone
- * blob and the neighboring cell's halftone blob based on their fill factors. If the gap is too small, either
- * widen it by adjusting both fill factors down a bit (for this edge only!), or eliminate it by setting both
- * fill factors to 1.0 (again, for this edge only!). */
- adjusted_fill_factors.clear();
- const jcv_graphedge* e = sites[i].edges;
- while (e) {
- /* half distance between both neighbors of this edge, i.e. sites[i] and its neighbor. */
- /* Note that in a voronoi tesselation, this edge is always halfway between. */
- double adjusted_fill_factor = fill_factor_ours;
-
- if (e->neighbor != nullptr) { /* nullptr -> edge is on the voronoi map's border */
- double rad = sqrt(pow(center.x - e->neighbor->p.x, 2) + pow(center.y - e->neighbor->p.y, 2)) / 2.0;
- double fill_factor_theirs = fill_factors[e->neighbor->index];
- double gap_px = (1.0 - fill_factor_ours) * rad + (1.0 - fill_factor_theirs) * rad;
-
- if (gap_px > min_gap_px) {
- /* all good. gap is wider than minimum. */
- } else if (gap_px > 0.5 * min_gap_px) {
- /* gap is narrower than minimum, but more than half of minimum width. */
- /* force gap open, distribute adjustment evenly on left/right */
- double fill_factor_adjustment = (min_gap_px - gap_px) / 2.0 / rad;
- adjusted_fill_factor -= fill_factor_adjustment;
- } else {
- /* gap is less than half of minimum width. Force gap closed. */
- adjusted_fill_factor = 1.0;
- }
- }
- adjusted_fill_factors.push_back(adjusted_fill_factor);
- e = e->next;
- }
-
- /* Now, generate the actual halftone blob polygon */
- ClipperLib::Path cell_path;
- double last_fill_factor = adjusted_fill_factors.back();
- e = sites[i].edges;
- j = 0;
- while (e) {
- double fill_factor = adjusted_fill_factors[j];
- 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) });
- }
-
- /* 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) });
-
- j += 1;
- last_fill_factor = fill_factor;
- e = e->next;
- }
-
- /* Now, clip the halftone blob generated above against the given clip path. We do this individually for each
- * blob since this way is *much* faster than throwing a million blobs at once at poor clipper. */
- ClipperLib::Paths polys;
- ClipperLib::Clipper c;
- c.AddPath(cell_path, ClipperLib::ptSubject, /* closed */ true);
- if (!clip_path.empty()) {
- c.AddPaths(clip_path, ClipperLib::ptClip, /* closed */ true);
- }
- 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. */
- for (const auto &poly : polys) {
- vector<array<double, 2>> out;
- for (const auto &p : poly)
- out.push_back(std::array<double, 2>{
- ((double)p.X) / clipper_scale, ((double)p.Y) / clipper_scale
- });
- sink << GRB_POL_DARK << out;
- }
- }
-
- 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) {
-
- if (spec.empty()) {
- spec = "xMidYMid meet";
- }
-
- auto idx = spec.find(" ");
- string par_align = spec;
- string par_meet = "meet";
- if (idx != string::npos) {
- par_align = spec.substr(0, idx);
- par_meet = spec.substr(idx+1);
- }
-
- if (par_align != "none") {
- double scale = scale_x;
- if (par_meet == "slice") {
- scale = std::max(scale_x, scale_y);
- } else {
- scale = std::min(scale_x, scale_y);
- }
-
- std::regex reg("x(Min|Mid|Max)Y(Min|Mid|Max)");
- std::smatch match;
-
- cerr << "data: " <<" "<< scale_x << "/" << scale_y << ": " << scale << endl;
- off_x = (scale_x - scale) * cols;
- off_y = (scale_y - scale) * rows;
- cerr << rows <<","<<cols<<" " << off_x << "," << off_y << endl;
- if (std::regex_match(par_align, match, reg)) {
- assert (match.size() == 3);
- if (match[1].str() == "Min") {
- off_x = 0;
- } else if (match[1].str() == "Mid") {
- off_x *= 0.5;
- }
-
- if (match[2].str() == "Min") {
- off_y = 0;
- } else if (match[2].str() == "Mid") {
- off_y *= 0.5;
- }
-
- } else {
- cerr << "Invalid preserveAspectRatio meetOrSlice value \"" << par_align << "\"" << endl;
- off_x *= 0.5;
- off_y *= 0.5;
- }
-
- scale_x = scale_y = scale;
- }
- cerr << "res: "<< off_x << "," << off_y << endl;
-}
-
-
-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) {
- 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);
-
- double scale_x = (double)width / (double)img.cols;
- double scale_y = (double)height / (double)img.rows;
- double off_x = 0;
- double off_y = 0;
- 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);
-
- vector<vector<cv::Point>> contours;
- vector<cv::Vec4i> hierarchy;
- cv::findContours(img, contours, hierarchy, cv::RETR_TREE, cv::CHAIN_APPROX_TC89_KCOS);
-
- queue<pair<size_t, bool>> child_stack;
- child_stack.push({ 0, true });
-
- while (!child_stack.empty()) {
- bool dark = child_stack.front().second;
- for (int i=child_stack.front().first; i>=0; i = hierarchy[i][0]) {
- if (hierarchy[i][2] >= 0) {
- child_stack.push({ hierarchy[i][2], !dark });
- }
-
- sink << (dark ? GRB_POL_DARK : GRB_POL_CLEAR);
-
- bool is_clockwise = cv::contourArea(contours[i], true) > 0;
- if (!is_clockwise)
- std::reverse(contours[i].begin(), contours[i].end());
-
- 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) });
- }
-
- ClipperLib::Clipper c;
- c.AddPath(out, ClipperLib::ptSubject, /* closed */ true);
- if (!clip_path.empty()) {
- c.AddPaths(clip_path, ClipperLib::ptClip, /* closed */ true);
- }
- c.StrictlySimple(true);
- 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. */
- for (const auto &poly : polys) {
- vector<array<double, 2>> out;
- for (const auto &p : poly)
- out.push_back(std::array<double, 2>{
- ((double)p.X) / clipper_scale, ((double)p.Y) / clipper_scale
- });
- sink << out;
- }
- }
-
- child_stack.pop();
- }
-
- cairo_restore(cr);
-}
-
-gerbolyze::VectorizerSelectorizer::VectorizerSelectorizer(const string default_vectorizer, const string defs)
- : m_default(default_vectorizer) {
- istringstream foo(defs);
- string elem;
- while (std::getline(foo, elem, ',')) {
- size_t pos = elem.find_first_of("=");
- if (pos == string::npos) {
- cerr << "Error parsing vectorizer selection string at element \"" << elem << "\"" << endl;
- continue;
- }
-
- const string parsed_id = elem.substr(0, pos);
- const string mapping = elem.substr(pos+1);
- m_map[parsed_id] = mapping;
- }
-
- cerr << "parsed " << m_map.size() << " vectorizers" << endl;
- for (auto &elem : m_map) {
- cerr << " " << elem.first << " -> " << elem.second << endl;
- }
-}
-
-ImageVectorizer *gerbolyze::VectorizerSelectorizer::select(const pugi::xml_node &img) {
- const string id = img.attribute("id").value();
- cerr << "selecting vectorizer for image \"" << id << "\"" << endl;
- if (m_map.contains(id)) {
- cerr << " -> found" << endl;
- return makeVectorizer(m_map[id]);
- }
-
- cerr << " -> default" << endl;
- return makeVectorizer(m_default);
-}
-