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PrusaSlicer-NonPlainar/src/libslic3r/SVG.cpp
Vojtech Bubnik 308d6b7809 WIP: Reworked slicing 
1) Slicing code moved to TriangleMeshSlicer.cpp,hpp from TriangleMesh.cpp,hpp
2) Refactored to use as little as possible of admesh.
2021-05-17 20:25:59 +02:00

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#include "SVG.hpp"
#include <iostream>
#include <boost/nowide/cstdio.hpp>
namespace Slic3r {
bool SVG::open(const char* afilename)
{
this->filename = afilename;
this->f = boost::nowide::fopen(afilename, "w");
if (this->f == NULL)
return false;
fprintf(this->f,
"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"
"<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.0//EN\" \"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">\n"
"<svg height=\"2000\" width=\"2000\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:svg=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n"
" <marker id=\"endArrow\" markerHeight=\"8\" markerUnits=\"strokeWidth\" markerWidth=\"10\" orient=\"auto\" refX=\"1\" refY=\"5\" viewBox=\"0 0 10 10\">\n"
" <polyline fill=\"darkblue\" points=\"0,0 10,5 0,10 1,5\" />\n"
" </marker>\n"
);
fprintf(this->f, "<rect fill='white' stroke='none' x='0' y='0' width='%f' height='%f'/>\n", 2000.f, 2000.f);
return true;
}
bool SVG::open(const char* afilename, const BoundingBox &bbox, const coord_t bbox_offset, bool aflipY)
{
this->filename = afilename;
this->origin = bbox.min - Point(bbox_offset, bbox_offset);
this->flipY = aflipY;
this->f = boost::nowide::fopen(afilename, "w");
if (f == NULL)
return false;
float w = to_svg_coord(bbox.max(0) - bbox.min(0) + 2 * bbox_offset);
float h = to_svg_coord(bbox.max(1) - bbox.min(1) + 2 * bbox_offset);
this->height = h;
fprintf(this->f,
"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n"
"<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.0//EN\" \"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd\">\n"
"<svg height=\"%f\" width=\"%f\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:svg=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n"
" <marker id=\"endArrow\" markerHeight=\"8\" markerUnits=\"strokeWidth\" markerWidth=\"10\" orient=\"auto\" refX=\"1\" refY=\"5\" viewBox=\"0 0 10 10\">\n"
" <polyline fill=\"darkblue\" points=\"0,0 10,5 0,10 1,5\" />\n"
" </marker>\n",
h, w);
fprintf(this->f, "<rect fill='white' stroke='none' x='0' y='0' width='%f' height='%f'/>\n", w, h);
return true;
}
void SVG::draw(const Line &line, std::string stroke, coordf_t stroke_width)
{
fprintf(this->f,
" <line x1=\"%f\" y1=\"%f\" x2=\"%f\" y2=\"%f\" style=\"stroke: %s; stroke-width: %f\"",
to_svg_x(line.a(0) - origin(0)), to_svg_y(line.a(1) - origin(1)), to_svg_x(line.b(0) - origin(0)), to_svg_y(line.b(1) - origin(1)), stroke.c_str(), (stroke_width == 0) ? 1.f : to_svg_coord(stroke_width));
if (this->arrows)
fprintf(this->f, " marker-end=\"url(#endArrow)\"");
fprintf(this->f, "/>\n");
}
void SVG::draw(const ThickLine &line, const std::string &fill, const std::string &stroke, coordf_t stroke_width)
{
Vec2d dir(line.b(0)-line.a(0), line.b(1)-line.a(1));
Vec2d perp(-dir(1), dir(0));
coordf_t len = sqrt(perp(0)*perp(0) + perp(1)*perp(1));
coordf_t da = coordf_t(0.5)*line.a_width/len;
coordf_t db = coordf_t(0.5)*line.b_width/len;
fprintf(this->f,
" <polygon points=\"%f,%f %f,%f %f,%f %f,%f\" style=\"fill:%s; stroke: %s; stroke-width: %f\"/>\n",
to_svg_x(line.a(0)-da*perp(0)-origin(0)),
to_svg_y(line.a(1)-da*perp(1)-origin(1)),
to_svg_x(line.b(0)-db*perp(0)-origin(0)),
to_svg_y(line.b(1)-db*perp(1)-origin(1)),
to_svg_x(line.b(0)+db*perp(0)-origin(0)),
to_svg_y(line.b(1)+db*perp(1)-origin(1)),
to_svg_x(line.a(0)+da*perp(0)-origin(0)),
to_svg_y(line.a(1)+da*perp(1)-origin(1)),
fill.c_str(), stroke.c_str(),
(stroke_width == 0) ? 1.f : to_svg_coord(stroke_width));
}
void SVG::draw(const Lines &lines, std::string stroke, coordf_t stroke_width)
{
for (const Line &l : lines)
this->draw(l, stroke, stroke_width);
}
void SVG::draw(const ExPolygon &expolygon, std::string fill, const float fill_opacity)
{
this->fill = fill;
std::string d;
Polygons pp = expolygon;
for (Polygons::const_iterator p = pp.begin(); p != pp.end(); ++p) {
d += this->get_path_d(*p, true) + " ";
}
this->path(d, true, 0, fill_opacity);
}
void SVG::draw_outline(const ExPolygon &expolygon, std::string stroke_outer, std::string stroke_holes, coordf_t stroke_width)
{
draw_outline(expolygon.contour, stroke_outer, stroke_width);
for (Polygons::const_iterator it = expolygon.holes.begin(); it != expolygon.holes.end(); ++ it) {
draw_outline(*it, stroke_holes, stroke_width);
}
}
void SVG::draw(const ExPolygons &expolygons, std::string fill, const float fill_opacity)
{
for (ExPolygons::const_iterator it = expolygons.begin(); it != expolygons.end(); ++it)
this->draw(*it, fill, fill_opacity);
}
void SVG::draw_outline(const ExPolygons &expolygons, std::string stroke_outer, std::string stroke_holes, coordf_t stroke_width)
{
for (ExPolygons::const_iterator it = expolygons.begin(); it != expolygons.end(); ++ it)
draw_outline(*it, stroke_outer, stroke_holes, stroke_width);
}
void SVG::draw(const Surface &surface, std::string fill, const float fill_opacity)
{
draw(surface.expolygon, fill, fill_opacity);
}
void SVG::draw_outline(const Surface &surface, std::string stroke_outer, std::string stroke_holes, coordf_t stroke_width)
{
draw_outline(surface.expolygon, stroke_outer, stroke_holes, stroke_width);
}
void SVG::draw(const Surfaces &surfaces, std::string fill, const float fill_opacity)
{
for (Surfaces::const_iterator it = surfaces.begin(); it != surfaces.end(); ++it)
this->draw(*it, fill, fill_opacity);
}
void SVG::draw_outline(const Surfaces &surfaces, std::string stroke_outer, std::string stroke_holes, coordf_t stroke_width)
{
for (Surfaces::const_iterator it = surfaces.begin(); it != surfaces.end(); ++ it)
draw_outline(*it, stroke_outer, stroke_holes, stroke_width);
}
void SVG::draw(const SurfacesPtr &surfaces, std::string fill, const float fill_opacity)
{
for (SurfacesPtr::const_iterator it = surfaces.begin(); it != surfaces.end(); ++it)
this->draw(*(*it), fill, fill_opacity);
}
void SVG::draw_outline(const SurfacesPtr &surfaces, std::string stroke_outer, std::string stroke_holes, coordf_t stroke_width)
{
for (SurfacesPtr::const_iterator it = surfaces.begin(); it != surfaces.end(); ++ it)
draw_outline(*(*it), stroke_outer, stroke_holes, stroke_width);
}
void SVG::draw(const Polygon &polygon, std::string fill)
{
this->fill = fill;
this->path(this->get_path_d(polygon, true), !fill.empty(), 0, 1.f);
}
void SVG::draw(const Polygons &polygons, std::string fill)
{
for (Polygons::const_iterator it = polygons.begin(); it != polygons.end(); ++it)
this->draw(*it, fill);
}
void SVG::draw(const Polyline &polyline, std::string stroke, coordf_t stroke_width)
{
this->stroke = stroke;
this->path(this->get_path_d(polyline, false), false, stroke_width, 1.f);
}
void SVG::draw(const Polylines &polylines, std::string stroke, coordf_t stroke_width)
{
for (Polylines::const_iterator it = polylines.begin(); it != polylines.end(); ++it)
this->draw(*it, stroke, stroke_width);
}
void SVG::draw(const ThickLines &thicklines, const std::string &fill, const std::string &stroke, coordf_t stroke_width)
{
for (ThickLines::const_iterator it = thicklines.begin(); it != thicklines.end(); ++it)
this->draw(*it, fill, stroke, stroke_width);
}
void SVG::draw(const ThickPolylines &polylines, const std::string &stroke, coordf_t stroke_width)
{
for (ThickPolylines::const_iterator it = polylines.begin(); it != polylines.end(); ++it)
this->draw((Polyline)*it, stroke, stroke_width);
}
void SVG::draw(const ThickPolylines &thickpolylines, const std::string &fill, const std::string &stroke, coordf_t stroke_width)
{
for (ThickPolylines::const_iterator it = thickpolylines.begin(); it != thickpolylines.end(); ++ it)
draw(it->thicklines(), fill, stroke, stroke_width);
}
void SVG::draw(const Point &point, std::string fill, coord_t iradius)
{
float radius = (iradius == 0) ? 3.f : to_svg_coord(iradius);
std::ostringstream svg;
svg << " <circle cx=\"" << to_svg_x(point(0) - origin(0)) << "\" cy=\"" << to_svg_y(point(1) - origin(1))
<< "\" r=\"" << radius << "\" "
<< "style=\"stroke: none; fill: " << fill << "\" />";
fprintf(this->f, "%s\n", svg.str().c_str());
}
void SVG::draw(const Points &points, std::string fill, coord_t radius)
{
for (Points::const_iterator it = points.begin(); it != points.end(); ++it)
this->draw(*it, fill, radius);
}
void SVG::draw(const ClipperLib::Path &polygon, double scale, std::string stroke, coordf_t stroke_width)
{
this->stroke = stroke;
this->path(this->get_path_d(polygon, scale, true), false, stroke_width, 1.f);
}
void SVG::draw(const ClipperLib::Paths &polygons, double scale, std::string stroke, coordf_t stroke_width)
{
for (ClipperLib::Paths::const_iterator it = polygons.begin(); it != polygons.end(); ++ it)
draw(*it, scale, stroke, stroke_width);
}
void SVG::draw_outline(const Polygon &polygon, std::string stroke, coordf_t stroke_width)
{
this->stroke = stroke;
this->path(this->get_path_d(polygon, true), false, stroke_width, 1.f);
}
void SVG::draw_outline(const Polygons &polygons, std::string stroke, coordf_t stroke_width)
{
for (Polygons::const_iterator it = polygons.begin(); it != polygons.end(); ++ it)
draw_outline(*it, stroke, stroke_width);
}
void SVG::path(const std::string &d, bool fill, coordf_t stroke_width, const float fill_opacity)
{
float lineWidth = 0.f;
if (! fill)
lineWidth = (stroke_width == 0) ? 2.f : to_svg_coord(stroke_width);
fprintf(
this->f,
" <path d=\"%s\" style=\"fill: %s; stroke: %s; stroke-width: %f; fill-type: evenodd\" %s fill-opacity=\"%f\" />\n",
d.c_str(),
fill ? this->fill.c_str() : "none",
this->stroke.c_str(),
lineWidth,
(this->arrows && !fill) ? " marker-end=\"url(#endArrow)\"" : "",
fill_opacity
);
}
std::string SVG::get_path_d(const MultiPoint &mp, bool closed) const
{
std::ostringstream d;
d << "M ";
for (Points::const_iterator p = mp.points.begin(); p != mp.points.end(); ++p) {
d << to_svg_x((*p)(0) - origin(0)) << " ";
d << to_svg_y((*p)(1) - origin(1)) << " ";
}
if (closed) d << "z";
return d.str();
}
std::string SVG::get_path_d(const ClipperLib::Path &path, double scale, bool closed) const
{
std::ostringstream d;
d << "M ";
for (ClipperLib::Path::const_iterator p = path.begin(); p != path.end(); ++p) {
d << to_svg_x(scale * p->x() - origin(0)) << " ";
d << to_svg_y(scale * p->y() - origin(1)) << " ";
}
if (closed) d << "z";
return d.str();
}
void SVG::draw_text(const Point &pt, const char *text, const char *color)
{
fprintf(this->f,
"<text x=\"%f\" y=\"%f\" font-family=\"sans-serif\" font-size=\"20px\" fill=\"%s\">%s</text>",
to_svg_x(pt(0)-origin(0)),
to_svg_y(pt(1)-origin(1)),
color, text);
}
void SVG::draw_legend(const Point &pt, const char *text, const char *color)
{
fprintf(this->f,
"<circle cx=\"%f\" cy=\"%f\" r=\"10\" fill=\"%s\"/>",
to_svg_x(pt(0)-origin(0)),
to_svg_y(pt(1)-origin(1)),
color);
fprintf(this->f,
"<text x=\"%f\" y=\"%f\" font-family=\"sans-serif\" font-size=\"10px\" fill=\"%s\">%s</text>",
to_svg_x(pt(0)-origin(0)) + 20.f,
to_svg_y(pt(1)-origin(1)),
"black", text);
}
void SVG::Close()
{
fprintf(this->f, "</svg>\n");
fclose(this->f);
this->f = NULL;
// printf("SVG written to %s\n", this->filename.c_str());
}
void SVG::export_expolygons(const char *path, const BoundingBox &bbox, const Slic3r::ExPolygons &expolygons, std::string stroke_outer, std::string stroke_holes, coordf_t stroke_width)
{
SVG svg(path, bbox);
svg.draw(expolygons);
svg.draw_outline(expolygons, stroke_outer, stroke_holes, stroke_width);
svg.Close();
}
// Paint the expolygons in the order they are presented, thus the latter overwrites the former expolygon.
// 1) Paint all areas with the provided ExPolygonAttributes::color_fill and ExPolygonAttributes::fill_opacity.
// 2) Optionally paint outlines of the areas if ExPolygonAttributes::outline_width > 0.
// Paint with ExPolygonAttributes::color_contour and ExPolygonAttributes::color_holes.
// If color_contour is empty, color_fill is used. If color_hole is empty, color_contour is used.
// 3) Optionally paint points of all expolygon contours with ExPolygonAttributes::radius_points if radius_points > 0.
// 4) Paint ExPolygonAttributes::legend into legend using the ExPolygonAttributes::color_fill if legend is not empty.
void SVG::export_expolygons(const char *path, const std::vector<std::pair<Slic3r::ExPolygons, ExPolygonAttributes>> &expolygons_with_attributes)
{
if (expolygons_with_attributes.empty())
return;
size_t num_legend = std::count_if(expolygons_with_attributes.begin(), expolygons_with_attributes.end(), [](const auto &v){ return ! v.second.legend.empty(); });
// Format in num_columns.
size_t num_columns = 3;
// Width of the column.
coord_t step_x = scale_(20.);
Point legend_size(scale_(1.) + num_columns * step_x, scale_(0.4 + 1.3 * (num_legend + num_columns - 1) / num_columns));
BoundingBox bbox = get_extents(expolygons_with_attributes.front().first);
for (size_t i = 0; i < expolygons_with_attributes.size(); ++ i)
bbox.merge(get_extents(expolygons_with_attributes[i].first));
// Legend y.
coord_t pos_y = bbox.max.y() + scale_(1.5);
bbox.merge(Point(std::max(bbox.min.x() + legend_size.x(), bbox.max.x()), bbox.max.y() + legend_size.y()));
SVG svg(path, bbox);
for (const auto &exp_with_attr : expolygons_with_attributes)
svg.draw(exp_with_attr.first, exp_with_attr.second.color_fill, exp_with_attr.second.fill_opacity);
for (const auto &exp_with_attr : expolygons_with_attributes) {
if (exp_with_attr.second.outline_width > 0) {
std::string color_contour = exp_with_attr.second.color_contour;
if (color_contour.empty())
color_contour = exp_with_attr.second.color_fill;
std::string color_holes = exp_with_attr.second.color_holes;
if (color_holes.empty())
color_holes = color_contour;
svg.draw_outline(exp_with_attr.first, color_contour, color_holes, exp_with_attr.second.outline_width);
}
}
for (const auto &exp_with_attr : expolygons_with_attributes)
if (exp_with_attr.second.radius_points > 0)
for (const ExPolygon &expoly : exp_with_attr.first)
svg.draw((Points)expoly, exp_with_attr.second.color_points, exp_with_attr.second.radius_points);
// Export legend.
// 1st row
coord_t pos_x0 = bbox.min.x() + scale_(1.);
coord_t pos_x = pos_x0;
size_t i_legend = 0;
for (const auto &exp_with_attr : expolygons_with_attributes) {
if (! exp_with_attr.second.legend.empty()) {
svg.draw_legend(Point(pos_x, pos_y), exp_with_attr.second.legend.c_str(), exp_with_attr.second.color_fill.c_str());
if ((++ i_legend) % num_columns == 0) {
pos_x = pos_x0;
pos_y += scale_(1.3);
} else {
pos_x += step_x;
}
}
}
svg.Close();
}
}
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