mirror of
https://github.com/SoftFever/OrcaSlicer.git
synced 2025-10-31 04:31:15 -06:00
New functions for variable offsets of polygons / expolygons.
Test cases for the above. Improvements of older test cases.
This commit is contained in:
bubnikv
parent
18bbefcd61
commit
5e8572a196
8 changed files with 565 additions and 27 deletions
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@ -107,8 +107,7 @@ void AddOuterPolyNodeToExPolygons(ClipperLib::PolyNode& polynode, ExPolygons* ex
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}
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}
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ExPolygons
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PolyTreeToExPolygons(ClipperLib::PolyTree& polytree)
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ExPolygons PolyTreeToExPolygons(ClipperLib::PolyTree& polytree)
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{
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ExPolygons retval;
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for (int i = 0; i < polytree.ChildCount(); ++i)
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@ -151,8 +150,7 @@ Slic3r::Polylines ClipperPaths_to_Slic3rPolylines(const ClipperLib::Paths &input
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return retval;
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}
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ExPolygons
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ClipperPaths_to_Slic3rExPolygons(const ClipperLib::Paths &input)
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ExPolygons ClipperPaths_to_Slic3rExPolygons(const ClipperLib::Paths &input)
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{
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// init Clipper
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ClipperLib::Clipper clipper;
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@ -167,8 +165,7 @@ ClipperPaths_to_Slic3rExPolygons(const ClipperLib::Paths &input)
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return PolyTreeToExPolygons(polytree);
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}
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ClipperLib::Path
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Slic3rMultiPoint_to_ClipperPath(const MultiPoint &input)
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ClipperLib::Path Slic3rMultiPoint_to_ClipperPath(const MultiPoint &input)
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{
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ClipperLib::Path retval;
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for (Points::const_iterator pit = input.points.begin(); pit != input.points.end(); ++pit)
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@ -176,8 +173,7 @@ Slic3rMultiPoint_to_ClipperPath(const MultiPoint &input)
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return retval;
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}
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ClipperLib::Path
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Slic3rMultiPoint_to_ClipperPath_reversed(const Slic3r::MultiPoint &input)
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ClipperLib::Path Slic3rMultiPoint_to_ClipperPath_reversed(const Slic3r::MultiPoint &input)
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{
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ClipperLib::Path output;
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output.reserve(input.points.size());
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@ -521,7 +517,7 @@ T _clipper_do(const ClipperLib::ClipType clipType,
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// Fix of #117: A large fractal pyramid takes ages to slice
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// The Clipper library has difficulties processing overlapping polygons.
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// Namely, the function Clipper::JoinCommonEdges() has potentially a terrible time complexity if the output
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// Namely, the function ClipperLib::JoinCommonEdges() has potentially a terrible time complexity if the output
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// of the operation is of the PolyTree type.
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// This function implmenets a following workaround:
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// 1) Peform the Clipper operation with the output to Paths. This method handles overlaps in a reasonable time.
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@ -918,4 +914,304 @@ Polygons top_level_islands(const Slic3r::Polygons &polygons)
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return out;
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}
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// Outer offset shall not split the input contour into multiples. It is expected, that the solution will be non empty and it will contain just a single polygon.
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ClipperLib::Paths fix_after_outer_offset(const ClipperLib::Path &input, ClipperLib::PolyFillType filltype, bool reverse_result)
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{
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ClipperLib::Paths solution;
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if (! input.empty()) {
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ClipperLib::Clipper clipper;
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clipper.AddPath(input, ClipperLib::ptSubject, true);
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clipper.ReverseSolution(reverse_result);
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clipper.Execute(ClipperLib::ctUnion, solution, filltype, filltype);
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}
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return solution;
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}
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// Inner offset may split the source contour into multiple contours, but one shall not be inside the other.
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ClipperLib::Paths fix_after_inner_offset(const ClipperLib::Path &input, ClipperLib::PolyFillType filltype, bool reverse_result)
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{
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ClipperLib::Paths solution;
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if (! input.empty()) {
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ClipperLib::Clipper clipper;
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clipper.AddPath(input, ClipperLib::ptSubject, true);
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ClipperLib::IntRect r = clipper.GetBounds();
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r.left -= 10; r.top -= 10; r.right += 10; r.bottom += 10;
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if (filltype == ClipperLib::pftPositive)
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clipper.AddPath({ ClipperLib::IntPoint(r.left, r.bottom), ClipperLib::IntPoint(r.left, r.top), ClipperLib::IntPoint(r.right, r.top), ClipperLib::IntPoint(r.right, r.bottom) }, ClipperLib::ptSubject, true);
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else
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clipper.AddPath({ ClipperLib::IntPoint(r.left, r.bottom), ClipperLib::IntPoint(r.right, r.bottom), ClipperLib::IntPoint(r.right, r.top), ClipperLib::IntPoint(r.left, r.top) }, ClipperLib::ptSubject, true);
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clipper.ReverseSolution(reverse_result);
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clipper.Execute(ClipperLib::ctUnion, solution, filltype, filltype);
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if (! solution.empty())
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solution.erase(solution.begin());
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}
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return solution;
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}
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ClipperLib::Path mittered_offset_path_scaled(const Points &contour, const std::vector<float> &deltas, double miter_limit)
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{
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assert(contour.size() == deltas.size());
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#ifndef NDEBUG
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// Verify that the deltas are either all positive, or all negative.
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bool positive = false;
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bool negative = false;
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for (float delta : deltas)
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if (delta < 0.f)
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negative = true;
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else if (delta > 0.f)
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positive = true;
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assert(! (negative && positive));
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#endif /* NDEBUG */
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ClipperLib::Path out;
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if (deltas.size() > 2)
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{
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out.reserve(contour.size() * 2);
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// Clamp miter limit to 2.
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miter_limit = (miter_limit > 2.) ? 2. / (miter_limit * miter_limit) : 0.5;
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// perpenduclar vector
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auto perp = [](const Vec2d &v) -> Vec2d { return Vec2d(v.y(), - v.x()); };
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// Add a new point to the output, scale by CLIPPER_OFFSET_SCALE and round to ClipperLib::cInt.
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auto add_offset_point = [&out](Vec2d pt) {
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pt *= double(CLIPPER_OFFSET_SCALE);
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pt += Vec2d(0.5 - (pt.x() < 0), 0.5 - (pt.y() < 0));
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out.emplace_back(ClipperLib::cInt(pt.x()), ClipperLib::cInt(pt.y()));
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};
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// Minimum edge length, squared.
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double lmin = *std::max_element(deltas.begin(), deltas.end()) * CLIPPER_OFFSET_SHORTEST_EDGE_FACTOR;
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double l2min = lmin * lmin;
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// Minimum angle to consider two edges to be parallel.
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double sin_min_parallel = EPSILON + 1. / double(CLIPPER_OFFSET_SCALE);
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// Find the last point further from pt by l2min.
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Vec2d pt = contour.front().cast<double>();
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size_t iprev = contour.size() - 1;
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Vec2d ptprev;
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for (; iprev > 0; -- iprev) {
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ptprev = contour[iprev].cast<double>();
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if ((ptprev - pt).squaredNorm() > l2min)
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break;
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}
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if (iprev != 0) {
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size_t ilast = iprev;
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// Normal to the (pt - ptprev) segment.
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Vec2d nprev = perp(pt - ptprev).normalized();
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for (size_t i = 0; ; ) {
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// Find the next point further from pt by l2min.
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size_t j = i + 1;
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Vec2d ptnext;
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for (; j <= ilast; ++ j) {
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ptnext = contour[j].cast<double>();
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double l2 = (ptnext - pt).squaredNorm();
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if (l2 > l2min)
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break;
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}
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if (j > ilast)
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ptnext = contour.front().cast<double>();
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// Normal to the (ptnext - pt) segment.
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Vec2d nnext = perp(ptnext - pt).normalized();
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double delta = deltas[i];
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double sin_a = clamp(-1., 1., cross2(nprev, nnext));
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double convex = sin_a * delta;
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if (convex <= - sin_min_parallel) {
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// Concave corner.
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add_offset_point(pt + nprev * delta);
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add_offset_point(pt);
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add_offset_point(pt + nnext * delta);
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} else if (convex < sin_min_parallel) {
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// Nearly parallel.
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add_offset_point((nprev.dot(nnext) > 0.) ? (pt + nprev * delta) : pt);
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} else {
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// Convex corner
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double dot = nprev.dot(nnext);
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double r = 1. + dot;
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if (r >= miter_limit)
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add_offset_point(pt + (nprev + nnext) * (delta / r));
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else {
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double dx = std::tan(std::atan2(sin_a, dot) / 4.);
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Vec2d newpt1 = pt + (nprev - perp(nprev) * dx) * delta;
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Vec2d newpt2 = pt + (nnext + perp(nnext) * dx) * delta;
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#ifndef NDEBUG
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Vec2d vedge = 0.5 * (newpt1 + newpt2) - pt;
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double dist_norm = vedge.norm();
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assert(std::abs(dist_norm - delta) < EPSILON);
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#endif /* NDEBUG */
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add_offset_point(newpt1);
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add_offset_point(newpt2);
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}
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}
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if (i == ilast)
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break;
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ptprev = pt;
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nprev = nnext;
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pt = ptnext;
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i = j;
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}
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}
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}
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return out;
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}
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Polygons variable_offset_inner(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit)
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{
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#ifndef NDEBUG
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// Verify that the deltas are all non positive.
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for (const std::vector<float> &ds : deltas)
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for (float delta : ds)
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assert(delta <= 0.);
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assert(expoly.holes.size() + 1 == deltas.size());
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#endif /* NDEBUG */
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// 1) Offset the outer contour.
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ClipperLib::Paths contours = fix_after_inner_offset(mittered_offset_path_scaled(expoly.contour.points, deltas.front(), miter_limit), ClipperLib::pftNegative, true);
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// 2) Offset the holes one by one, collect the results.
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ClipperLib::Paths holes;
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holes.reserve(expoly.holes.size());
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for (const Polygon& hole : expoly.holes)
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append(holes, fix_after_outer_offset(mittered_offset_path_scaled(hole, deltas[1 + &hole - expoly.holes.data()], miter_limit), ClipperLib::pftPositive, false));
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// 3) Subtract holes from the contours.
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ClipperLib::Paths output;
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if (holes.empty())
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output = std::move(contours);
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else {
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ClipperLib::Clipper clipper;
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clipper.Clear();
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clipper.AddPaths(contours, ClipperLib::ptSubject, true);
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clipper.AddPaths(holes, ClipperLib::ptClip, true);
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clipper.Execute(ClipperLib::ctDifference, output, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
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}
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// 4) Unscale the output.
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unscaleClipperPolygons(output);
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return ClipperPaths_to_Slic3rPolygons(output);
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}
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Polygons variable_offset_outer(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit)
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{
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#ifndef NDEBUG
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// Verify that the deltas are all non positive.
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for (const std::vector<float>& ds : deltas)
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for (float delta : ds)
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assert(delta >= 0.);
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assert(expoly.holes.size() + 1 == deltas.size());
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#endif /* NDEBUG */
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// 1) Offset the outer contour.
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ClipperLib::Paths contours = fix_after_outer_offset(mittered_offset_path_scaled(expoly.contour.points, deltas.front(), miter_limit), ClipperLib::pftPositive, false);
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// 2) Offset the holes one by one, collect the results.
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ClipperLib::Paths holes;
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holes.reserve(expoly.holes.size());
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for (const Polygon& hole : expoly.holes)
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append(holes, fix_after_inner_offset(mittered_offset_path_scaled(hole, deltas[1 + &hole - expoly.holes.data()], miter_limit), ClipperLib::pftPositive, true));
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// 3) Subtract holes from the contours.
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ClipperLib::Paths output;
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if (holes.empty())
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output = std::move(contours);
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else {
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ClipperLib::Clipper clipper;
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clipper.Clear();
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clipper.AddPaths(contours, ClipperLib::ptSubject, true);
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clipper.AddPaths(holes, ClipperLib::ptClip, true);
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clipper.Execute(ClipperLib::ctDifference, output, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
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}
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// 4) Unscale the output.
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unscaleClipperPolygons(output);
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return ClipperPaths_to_Slic3rPolygons(output);
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}
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ExPolygons variable_offset_outer_ex(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit)
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{
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#ifndef NDEBUG
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// Verify that the deltas are all non positive.
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for (const std::vector<float>& ds : deltas)
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for (float delta : ds)
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assert(delta >= 0.);
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assert(expoly.holes.size() + 1 == deltas.size());
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#endif /* NDEBUG */
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// 1) Offset the outer contour.
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ClipperLib::Paths contours = fix_after_outer_offset(mittered_offset_path_scaled(expoly.contour.points, deltas.front(), miter_limit), ClipperLib::pftPositive, false);
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// 2) Offset the holes one by one, collect the results.
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ClipperLib::Paths holes;
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holes.reserve(expoly.holes.size());
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for (const Polygon& hole : expoly.holes)
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append(holes, fix_after_inner_offset(mittered_offset_path_scaled(hole, deltas[1 + &hole - expoly.holes.data()], miter_limit), ClipperLib::pftPositive, true));
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// 3) Subtract holes from the contours.
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unscaleClipperPolygons(contours);
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ExPolygons output;
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if (holes.empty()) {
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output.reserve(contours.size());
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for (ClipperLib::Path &path : contours)
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output.emplace_back(ClipperPath_to_Slic3rPolygon(path));
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} else {
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ClipperLib::Clipper clipper;
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unscaleClipperPolygons(holes);
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clipper.AddPaths(contours, ClipperLib::ptSubject, true);
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clipper.AddPaths(holes, ClipperLib::ptClip, true);
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ClipperLib::PolyTree polytree;
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clipper.Execute(ClipperLib::ctDifference, polytree, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
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output = PolyTreeToExPolygons(polytree);
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}
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return output;
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}
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ExPolygons variable_offset_inner_ex(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit)
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{
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#ifndef NDEBUG
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// Verify that the deltas are all non positive.
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for (const std::vector<float>& ds : deltas)
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for (float delta : ds)
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assert(delta <= 0.);
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assert(expoly.holes.size() + 1 == deltas.size());
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#endif /* NDEBUG */
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// 1) Offset the outer contour.
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ClipperLib::Paths contours = fix_after_inner_offset(mittered_offset_path_scaled(expoly.contour.points, deltas.front(), miter_limit), ClipperLib::pftNegative, false);
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// 2) Offset the holes one by one, collect the results.
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ClipperLib::Paths holes;
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holes.reserve(expoly.holes.size());
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for (const Polygon& hole : expoly.holes)
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append(holes, fix_after_outer_offset(mittered_offset_path_scaled(hole, deltas[1 + &hole - expoly.holes.data()], miter_limit), ClipperLib::pftNegative, true));
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// 3) Subtract holes from the contours.
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unscaleClipperPolygons(contours);
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ExPolygons output;
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if (holes.empty()) {
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output.reserve(contours.size());
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for (ClipperLib::Path &path : contours)
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output.emplace_back(ClipperPath_to_Slic3rPolygon(path));
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} else {
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ClipperLib::Clipper clipper;
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unscaleClipperPolygons(holes);
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clipper.AddPaths(contours, ClipperLib::ptSubject, true);
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clipper.AddPaths(holes, ClipperLib::ptClip, true);
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ClipperLib::PolyTree polytree;
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clipper.Execute(ClipperLib::ctDifference, polytree, ClipperLib::pftNonZero, ClipperLib::pftNonZero);
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output = PolyTreeToExPolygons(polytree);
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}
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return output;
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}
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}
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@ -238,6 +238,11 @@ void safety_offset(ClipperLib::Paths* paths);
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Polygons top_level_islands(const Slic3r::Polygons &polygons);
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Polygons variable_offset_inner(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit = 2.);
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Polygons variable_offset_outer(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit = 2.);
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ExPolygons variable_offset_outer_ex(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit = 2.);
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ExPolygons variable_offset_inner_ex(const ExPolygon &expoly, const std::vector<std::vector<float>> &deltas, double miter_limit = 2.);
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}
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#endif
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@ -301,6 +301,15 @@ inline bool expolygons_contain(ExPolygons &expolys, const Point &pt)
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return false;
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}
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inline ExPolygons expolygons_simplify(const ExPolygons &expolys, double tolerance)
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{
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ExPolygons out;
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out.reserve(expolys.size());
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for (const ExPolygon &exp : expolys)
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exp.simplify(tolerance, &out);
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return out;
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}
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extern BoundingBox get_extents(const ExPolygon &expolygon);
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extern BoundingBox get_extents(const ExPolygons &expolygons);
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extern BoundingBox get_extents_rotated(const ExPolygon &poly, double angle);
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@ -102,6 +102,15 @@ inline void polygons_append(Polygons &dst, Polygons &&src)
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}
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}
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inline Polygons polygons_simplify(const Polygons &polys, double tolerance)
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{
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Polygons out;
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out.reserve(polys.size());
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for (const Polygon &p : polys)
|
||||
polygons_append(out, p.simplify(tolerance));
|
||||
return out;
|
||||
}
|
||||
|
||||
inline void polygons_rotate(Polygons &polys, double angle)
|
||||
{
|
||||
const double cos_angle = cos(angle);
|
||||
|
|
|
|||
|
|
@ -95,7 +95,6 @@ SCENARIO(" Bridge flow specifics.", "[Flow]") {
|
|||
SCENARIO("Flow: Flow math for non-bridges", "[Flow]") {
|
||||
GIVEN("Nozzle Diameter of 0.4, a desired width of 1mm and layer height of 0.5") {
|
||||
ConfigOptionFloatOrPercent width(1.0, false);
|
||||
float spacing = 0.4f;
|
||||
float nozzle_diameter = 0.4f;
|
||||
float bridge_flow = 0.f;
|
||||
float layer_height = 0.5f;
|
||||
|
|
@ -119,7 +118,6 @@ SCENARIO("Flow: Flow math for non-bridges", "[Flow]") {
|
|||
}
|
||||
/// Check the min/max
|
||||
GIVEN("Nozzle Diameter of 0.25") {
|
||||
float spacing = 0.4f;
|
||||
float nozzle_diameter = 0.25f;
|
||||
float bridge_flow = 0.f;
|
||||
float layer_height = 0.5f;
|
||||
|
|
@ -161,7 +159,6 @@ SCENARIO("Flow: Flow math for non-bridges", "[Flow]") {
|
|||
SCENARIO("Flow: Flow math for bridges", "[Flow]") {
|
||||
GIVEN("Nozzle Diameter of 0.4, a desired width of 1mm and layer height of 0.5") {
|
||||
auto width = ConfigOptionFloatOrPercent(1.0, false);
|
||||
float spacing = 0.4f;
|
||||
float nozzle_diameter = 0.4f;
|
||||
float bridge_flow = 1.0f;
|
||||
float layer_height = 0.5f;
|
||||
|
|
|
|||
|
|
@ -14,8 +14,8 @@ using namespace Slic3r;
|
|||
/// Helper method to find the tool used for the brim (always the first extrusion)
|
||||
static int get_brim_tool(const std::string &gcode)
|
||||
{
|
||||
int brim_tool = -1;
|
||||
int tool = -1;
|
||||
int brim_tool = -1;
|
||||
int tool = -1;
|
||||
GCodeReader parser;
|
||||
parser.parse_buffer(gcode, [&tool, &brim_tool] (Slic3r::GCodeReader &self, const Slic3r::GCodeReader::GCodeLine &line)
|
||||
{
|
||||
|
|
@ -29,7 +29,7 @@ static int get_brim_tool(const std::string &gcode)
|
|||
return brim_tool;
|
||||
}
|
||||
|
||||
TEST_CASE("Skirt height is honored") {
|
||||
TEST_CASE("Skirt height is honored", "[Skirt]") {
|
||||
DynamicPrintConfig config = Slic3r::DynamicPrintConfig::full_print_config();
|
||||
config.set_deserialize({
|
||||
{ "skirts", 1 },
|
||||
|
|
@ -60,7 +60,7 @@ TEST_CASE("Skirt height is honored") {
|
|||
REQUIRE(layers_with_skirt.size() == (size_t)config.opt_int("skirt_height"));
|
||||
}
|
||||
|
||||
SCENARIO("Original Slic3r Skirt/Brim tests", "[!mayfail]") {
|
||||
SCENARIO("Original Slic3r Skirt/Brim tests", "[SkirtBrim]") {
|
||||
GIVEN("A default configuration") {
|
||||
DynamicPrintConfig config = Slic3r::DynamicPrintConfig::full_print_config();
|
||||
config.set_num_extruders(4);
|
||||
|
|
@ -73,7 +73,8 @@ SCENARIO("Original Slic3r Skirt/Brim tests", "[!mayfail]") {
|
|||
{ "first_layer_speed", "100%" },
|
||||
// remove noise from top/solid layers
|
||||
{ "top_solid_layers", 0 },
|
||||
{ "bottom_solid_layers", 1 }
|
||||
{ "bottom_solid_layers", 1 },
|
||||
{ "start_gcode", "T[initial_tool]\n" }
|
||||
});
|
||||
|
||||
WHEN("Brim width is set to 5") {
|
||||
|
|
@ -120,25 +121,29 @@ SCENARIO("Original Slic3r Skirt/Brim tests", "[!mayfail]") {
|
|||
|
||||
WHEN("Perimeter extruder = 2 and support extruders = 3") {
|
||||
THEN("Brim is printed with the extruder used for the perimeters of first object") {
|
||||
std::string gcode = Slic3r::Test::slice({TestMesh::cube_20x20x20}, {
|
||||
config.set_deserialize({
|
||||
{ "skirts", 0 },
|
||||
{ "brim_width", 5 },
|
||||
{ "perimeter_extruder", 2 },
|
||||
{ "support_material_extruder", 3 }
|
||||
});
|
||||
{ "support_material_extruder", 3 },
|
||||
{ "infill_extruder", 4 }
|
||||
});
|
||||
std::string gcode = Slic3r::Test::slice({TestMesh::cube_20x20x20}, config);
|
||||
int tool = get_brim_tool(gcode);
|
||||
REQUIRE(tool == config.opt_int("perimeter_extruder") - 1);
|
||||
}
|
||||
}
|
||||
WHEN("Perimeter extruder = 2, support extruders = 3, raft is enabled") {
|
||||
THEN("brim is printed with same extruder as skirt") {
|
||||
std::string gcode = Slic3r::Test::slice({TestMesh::cube_20x20x20}, {
|
||||
{ "skirts", 0 },
|
||||
{ "brim_width", 5 },
|
||||
{ "perimeter_extruder", 2 },
|
||||
{ "support_material_extruder", 3 },
|
||||
{ "raft_layers", 1 }
|
||||
});
|
||||
config.set_deserialize({
|
||||
{ "skirts", 0 },
|
||||
{ "brim_width", 5 },
|
||||
{ "perimeter_extruder", 2 },
|
||||
{ "support_material_extruder", 3 },
|
||||
{ "infill_extruder", 4 },
|
||||
{ "raft_layers", 1 }
|
||||
});
|
||||
std::string gcode = Slic3r::Test::slice({TestMesh::cube_20x20x20}, config);
|
||||
int tool = get_brim_tool(gcode);
|
||||
REQUIRE(tool == config.opt_int("support_material_extruder") - 1);
|
||||
}
|
||||
|
|
@ -200,6 +205,7 @@ SCENARIO("Original Slic3r Skirt/Brim tests", "[!mayfail]") {
|
|||
{ "infill_extruder", 3 }, // ensure that a tool command gets emitted.
|
||||
{ "cooling", false }, // to prevent speeds to be altered
|
||||
{ "first_layer_speed", "100%" }, // to prevent speeds to be altered
|
||||
{ "start_gcode", "T[initial_tool]\n" }
|
||||
});
|
||||
|
||||
THEN("overhang generates?") {
|
||||
|
|
|
|||
|
|
@ -2,7 +2,9 @@ get_filename_component(_TEST_NAME ${CMAKE_CURRENT_LIST_DIR} NAME)
|
|||
add_executable(${_TEST_NAME}_tests
|
||||
${_TEST_NAME}_tests.cpp
|
||||
test_3mf.cpp
|
||||
test_clipper_offset.cpp
|
||||
test_config.cpp
|
||||
# test_elephant_foot_compensation.cpp
|
||||
test_geometry.cpp
|
||||
test_polygon.cpp
|
||||
test_stl.cpp
|
||||
|
|
|
|||
214
tests/libslic3r/test_clipper_offset.cpp
Normal file
214
tests/libslic3r/test_clipper_offset.cpp
Normal file
|
|
@ -0,0 +1,214 @@
|
|||
#include <catch2/catch.hpp>
|
||||
|
||||
#include <iostream>
|
||||
#include <boost/filesystem.hpp>
|
||||
|
||||
#include "libslic3r/ClipperUtils.hpp"
|
||||
#include "libslic3r/ExPolygon.hpp"
|
||||
#include "libslic3r/SVG.hpp"
|
||||
|
||||
using namespace Slic3r;
|
||||
|
||||
#define TESTS_EXPORT_SVGS
|
||||
|
||||
SCENARIO("Constant offset", "[ClipperUtils]") {
|
||||
coord_t s = 1000000;
|
||||
GIVEN("20mm box") {
|
||||
ExPolygon box20mm;
|
||||
box20mm.contour.points = { { 0, 0 }, { 20 * s, 0 }, { 20 * s, 20 * s}, { 0, 20 * s} };
|
||||
std::vector<float> deltas_plus(box20mm.contour.points.size(), 1. * s);
|
||||
std::vector<float> deltas_minus(box20mm.contour.points.size(), - 1. * s);
|
||||
Polygons output;
|
||||
WHEN("Slic3r::offset()") {
|
||||
for (double miter : { 2.0, 1.5, 1.2 }) {
|
||||
DYNAMIC_SECTION("plus 1mm, miter " << miter << "x") {
|
||||
output = Slic3r::offset(box20mm, 1. * s, ClipperLib::jtMiter, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("constant_offset_box20mm_plus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(output, "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 22^2mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx(22. * 22. * s * s));
|
||||
}
|
||||
}
|
||||
DYNAMIC_SECTION("minus 1mm, miter " << miter << "x") {
|
||||
output = Slic3r::offset(box20mm, - 1. * s, ClipperLib::jtMiter, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("constant_offset_box20mm_minus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(output, "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 18^2mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx(18. * 18. * s * s));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
WHEN("Slic3r::variable_offset_outer/inner") {
|
||||
for (double miter : { 2.0, 1.5, 1.2 }) {
|
||||
DYNAMIC_SECTION("plus 1mm, miter " << miter << "x") {
|
||||
output = Slic3r::variable_offset_outer(box20mm, { deltas_plus }, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("variable_offset_box20mm_plus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(output, "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 22^2mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx(22. * 22. * s * s));
|
||||
}
|
||||
}
|
||||
DYNAMIC_SECTION("minus 1mm, miter " << miter << "x") {
|
||||
output = Slic3r::variable_offset_inner(box20mm, { deltas_minus }, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("variable_offset_box20mm_minus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(output, "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 18^2mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx(18. * 18. * s * s));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
GIVEN("20mm box with 10mm hole") {
|
||||
ExPolygon box20mm;
|
||||
box20mm.contour.points = { { 0, 0 }, { 20 * s, 0 }, { 20 * s, 20 * s}, { 0, 20 * s} };
|
||||
box20mm.holes.emplace_back(Slic3r::Polygon({ { 5 * s, 5 * s }, { 5 * s, 15 * s}, { 15 * s, 15 * s}, { 15 * s, 5 * s } }));
|
||||
std::vector<float> deltas_plus(box20mm.contour.points.size(), 1. * s);
|
||||
std::vector<float> deltas_minus(box20mm.contour.points.size(), -1. * s);
|
||||
ExPolygons output;
|
||||
SECTION("Slic3r::offset()") {
|
||||
for (double miter : { 2.0, 1.5, 1.2 }) {
|
||||
DYNAMIC_SECTION("miter " << miter << "x") {
|
||||
WHEN("plus 1mm") {
|
||||
output = Slic3r::offset_ex(box20mm, 1. * s, ClipperLib::jtMiter, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("constant_offset_box20mm_10mm_hole_plus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(to_polygons(output), "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 22^2-8^2 mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx((22. * 22. - 8. * 8.) * s * s));
|
||||
}
|
||||
}
|
||||
WHEN("minus 1mm") {
|
||||
output = Slic3r::offset_ex(box20mm, - 1. * s, ClipperLib::jtMiter, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("constant_offset_box20mm_10mm_hole_minus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(to_polygons(output), "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 18^2-12^2 mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx((18. * 18. - 12. * 12.) * s * s));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
SECTION("Slic3r::variable_offset_outer()") {
|
||||
for (double miter : { 2.0, 1.5, 1.2 }) {
|
||||
DYNAMIC_SECTION("miter " << miter << "x") {
|
||||
WHEN("plus 1mm") {
|
||||
output = Slic3r::variable_offset_outer_ex(box20mm, { deltas_plus, deltas_plus }, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("variable_offset_box20mm_10mm_hole_plus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(to_polygons(output), "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 22^2-8^2 mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx((22. * 22. - 8. * 8.) * s * s));
|
||||
}
|
||||
}
|
||||
WHEN("minus 1mm") {
|
||||
output = Slic3r::variable_offset_inner_ex(box20mm, { deltas_minus, deltas_minus }, miter);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("variable_offset_box20mm_10mm_hole_minus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(box20mm, "blue");
|
||||
svg.draw_outline(to_polygons(output), "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area is 18^2-12^2 mm2") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx((18. * 18. - 12. * 12.) * s * s));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
GIVEN("20mm right angle triangle") {
|
||||
ExPolygon triangle20mm;
|
||||
triangle20mm.contour.points = { { 0, 0 }, { 20 * s, 0 }, { 0, 20 * s} };
|
||||
Polygons output;
|
||||
double offset = 1.;
|
||||
// Angle of the sharp corner bisector.
|
||||
double angle_bisector = M_PI / 8.;
|
||||
// Area tapered by mitering one sharp corner.
|
||||
double area_tapered = pow(offset * (1. / sin(angle_bisector) - 1.), 2.) * tan(angle_bisector);
|
||||
double l_triangle_side_offsetted = 20. + offset * (1. + 1. / tan(angle_bisector));
|
||||
double area_offsetted = (0.5 * l_triangle_side_offsetted * l_triangle_side_offsetted - 2. * area_tapered) * s * s;
|
||||
SECTION("Slic3r::offset()") {
|
||||
for (double miter : { 2.0, 1.5, 1.2 }) {
|
||||
DYNAMIC_SECTION("Outer offset 1mm, miter " << miter << "x") {
|
||||
output = Slic3r::offset(triangle20mm, offset * s, ClipperLib::jtMiter, 2.0);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("constant_offset_triangle20mm_plus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(triangle20mm, "blue");
|
||||
svg.draw_outline(output, "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area matches") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx(area_offsetted));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
SECTION("Slic3r::variable_offset_outer()") {
|
||||
std::vector<float> deltas(triangle20mm.contour.points.size(), 1. * s);
|
||||
for (double miter : { 2.0, 1.5, 1.2 }) {
|
||||
DYNAMIC_SECTION("Outer offset 1mm, miter " << miter << "x") {
|
||||
output = Slic3r::variable_offset_outer(triangle20mm, { deltas }, 2.0);
|
||||
#ifdef TESTS_EXPORT_SVGS
|
||||
{
|
||||
SVG svg(debug_out_path("variable_offset_triangle20mm_plus1mm_miter%lf.svg", miter).c_str(), get_extents(output));
|
||||
svg.draw(triangle20mm, "blue");
|
||||
svg.draw_outline(output, "black", coord_t(scale_(0.01)));
|
||||
}
|
||||
#endif
|
||||
THEN("Area matches") {
|
||||
REQUIRE(output.size() == 1);
|
||||
REQUIRE(output.front().area() == Approx(area_offsetted));
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Add table
Add a link
Reference in a new issue