diff options
Diffstat (limited to 'xs/src/libslic3r/PerimeterGenerator.cpp')
| -rw-r--r-- | xs/src/libslic3r/PerimeterGenerator.cpp | 154 |
1 files changed, 79 insertions, 75 deletions
diff --git a/xs/src/libslic3r/PerimeterGenerator.cpp b/xs/src/libslic3r/PerimeterGenerator.cpp index b6ed33f79..8e7b33cc8 100644 --- a/xs/src/libslic3r/PerimeterGenerator.cpp +++ b/xs/src/libslic3r/PerimeterGenerator.cpp @@ -366,99 +366,103 @@ ExtrusionEntityCollection PerimeterGenerator::_traverse_loops( return entities; } -ExtrusionEntityCollection PerimeterGenerator::_variable_width(const ThickPolylines &polylines, ExtrusionRole role, Flow flow) const +static inline ExtrusionPaths thick_polyline_to_extrusion_paths(const ThickPolyline &thick_polyline, ExtrusionRole role, Flow &flow, const float tolerance) { - // this value determines granularity of adaptive width, as G-code does not allow - // variable extrusion within a single move; this value shall only affect the amount - // of segments, and any pruning shall be performed before we apply this tolerance - const double tolerance = scale_(0.05); + ExtrusionPaths paths; + ExtrusionPath path(role); + ThickLines lines = thick_polyline.thicklines(); - ExtrusionEntityCollection coll; - for (const ThickPolyline &p : polylines) { - ExtrusionPaths paths; - ExtrusionPath path(role); - ThickLines lines = p.thicklines(); + for (int i = 0; i < (int)lines.size(); ++i) { + const ThickLine& line = lines[i]; - for (int i = 0; i < (int)lines.size(); ++i) { - const ThickLine& line = lines[i]; - - const coordf_t line_len = line.length(); - if (line_len < SCALED_EPSILON) continue; - - double thickness_delta = fabs(line.a_width - line.b_width); - if (thickness_delta > tolerance) { - const unsigned short segments = ceil(thickness_delta / tolerance); - const coordf_t seg_len = line_len / segments; - Points pp; - std::vector<coordf_t> width; - { - pp.push_back(line.a); - width.push_back(line.a_width); - for (size_t j = 1; j < segments; ++j) { - pp.push_back(line.point_at(j*seg_len)); - - coordf_t w = line.a_width + (j*seg_len) * (line.b_width-line.a_width) / line_len; - width.push_back(w); - width.push_back(w); - } - pp.push_back(line.b); - width.push_back(line.b_width); + const coordf_t line_len = line.length(); + if (line_len < SCALED_EPSILON) continue; + + double thickness_delta = fabs(line.a_width - line.b_width); + if (thickness_delta > tolerance) { + const unsigned short segments = ceil(thickness_delta / tolerance); + const coordf_t seg_len = line_len / segments; + Points pp; + std::vector<coordf_t> width; + { + pp.push_back(line.a); + width.push_back(line.a_width); + for (size_t j = 1; j < segments; ++j) { + pp.push_back((line.a.cast<double>() + (line.b - line.a).cast<double>().normalized() * (j * seg_len)).cast<coord_t>()); - assert(pp.size() == segments + 1); - assert(width.size() == segments*2); - } - - // delete this line and insert new ones - lines.erase(lines.begin() + i); - for (size_t j = 0; j < segments; ++j) { - ThickLine new_line(pp[j], pp[j+1]); - new_line.a_width = width[2*j]; - new_line.b_width = width[2*j+1]; - lines.insert(lines.begin() + i + j, new_line); + coordf_t w = line.a_width + (j*seg_len) * (line.b_width-line.a_width) / line_len; + width.push_back(w); + width.push_back(w); } + pp.push_back(line.b); + width.push_back(line.b_width); - -- i; - continue; + assert(pp.size() == segments + 1); + assert(width.size() == segments*2); + } + + // delete this line and insert new ones + lines.erase(lines.begin() + i); + for (size_t j = 0; j < segments; ++j) { + ThickLine new_line(pp[j], pp[j+1]); + new_line.a_width = width[2*j]; + new_line.b_width = width[2*j+1]; + lines.insert(lines.begin() + i + j, new_line); } - const double w = fmax(line.a_width, line.b_width); - if (path.polyline.points.empty()) { - path.polyline.append(line.a); + -- i; + continue; + } + + const double w = fmax(line.a_width, line.b_width); + if (path.polyline.points.empty()) { + path.polyline.append(line.a); + path.polyline.append(line.b); + // Convert from spacing to extrusion width based on the extrusion model + // of a square extrusion ended with semi circles. + flow.width = unscale(w) + flow.height * (1. - 0.25 * PI); + #ifdef SLIC3R_DEBUG + printf(" filling %f gap\n", flow.width); + #endif + path.mm3_per_mm = flow.mm3_per_mm(); + path.width = flow.width; + path.height = flow.height; + } else { + thickness_delta = fabs(scale_(flow.width) - w); + if (thickness_delta <= tolerance) { + // the width difference between this line and the current flow width is + // within the accepted tolerance path.polyline.append(line.b); - // Convert from spacing to extrusion width based on the extrusion model - // of a square extrusion ended with semi circles. - flow.width = unscale(w) + flow.height * (1. - 0.25 * PI); - #ifdef SLIC3R_DEBUG - printf(" filling %f gap\n", flow.width); - #endif - path.mm3_per_mm = flow.mm3_per_mm(); - path.width = flow.width; - path.height = flow.height; } else { - thickness_delta = fabs(scale_(flow.width) - w); - if (thickness_delta <= tolerance) { - // the width difference between this line and the current flow width is - // within the accepted tolerance - path.polyline.append(line.b); - } else { - // we need to initialize a new line - paths.emplace_back(std::move(path)); - path = ExtrusionPath(role); - -- i; - } + // we need to initialize a new line + paths.emplace_back(std::move(path)); + path = ExtrusionPath(role); + -- i; } } - if (path.polyline.is_valid()) - paths.emplace_back(std::move(path)); + } + if (path.polyline.is_valid()) + paths.emplace_back(std::move(path)); + return paths; +} + +ExtrusionEntityCollection PerimeterGenerator::_variable_width(const ThickPolylines &polylines, ExtrusionRole role, Flow flow) const +{ + // This value determines granularity of adaptive width, as G-code does not allow + // variable extrusion within a single move; this value shall only affect the amount + // of segments, and any pruning shall be performed before we apply this tolerance. + ExtrusionEntityCollection coll; + const double tolerance = scale_(0.05); + for (const ThickPolyline &p : polylines) { + ExtrusionPaths paths = thick_polyline_to_extrusion_paths(p, role, flow, tolerance); // Append paths to collection. if (! paths.empty()) { if (paths.front().first_point() == paths.back().last_point()) - coll.append(ExtrusionLoop(paths)); + coll.append(ExtrusionLoop(std::move(paths))); else - coll.append(paths); + coll.append(std::move(paths)); } } - return coll; } |