C++ Clipper::AddPolygons方法代码示例

void _clipper_do(const ClipperLib::ClipType clipType, Slic3r::Polygons &subject, 
    Slic3r::Polygons &clip, T &retval, const ClipperLib::PolyFillType fillType, const bool safety_offset_)
{
    // read input
    ClipperLib::Polygons* input_subject = new ClipperLib::Polygons();
    ClipperLib::Polygons* input_clip    = new ClipperLib::Polygons();
    Slic3rPolygons_to_ClipperPolygons(subject, *input_subject);
    Slic3rPolygons_to_ClipperPolygons(clip,    *input_clip);
    
    // perform safety offset
    if (safety_offset_) {
        if (clipType == ClipperLib::ctUnion) {
            safety_offset(input_subject);
        } else {
            safety_offset(input_clip);
        }
    }
    
    // init Clipper
    ClipperLib::Clipper clipper;
    clipper.Clear();
    
    // add polygons
    clipper.AddPolygons(*input_subject, ClipperLib::ptSubject);
    delete input_subject;
    clipper.AddPolygons(*input_clip, ClipperLib::ptClip);
    delete input_clip;
    
    // perform operation
    clipper.Execute(clipType, retval, fillType, fillType);
}

ClipperLib::Polygons NavMesh::_processWalkableObstacleRegions(const ClipperLib::Polygons& walkable, const ClipperLib::Polygons& obstacles)
{
    ClipperLib::Clipper clipper;

    ClipperLib::Polygons solution;

    clipper.AddPolygons(walkable, ClipperLib::ptSubject );

    clipper.AddPolygons(obstacles, ClipperLib::ptClip);

    clipper.Execute(ClipperLib::ctDifference, solution, ClipperLib::PolyFillType::pftNonZero, ClipperLib::PolyFillType::pftNonZero );

    return solution;
}

// clip infill pattern polys against polys
void Infill::addInfill(double z, const vector<Poly> polys, 
		       const ClipperLib::Polygons patterncpolys,
		       double offsetDistance)
{
  ClipperLib::Polygons cpolys;
  //   ClipperLib::OffsetPolygons(Clipping::getClipperPolygons(polys), cpolys, 100,
  // 			       ClipperLib::jtMiter,1);
  // else 
    cpolys = Clipping::getClipperPolygons(polys);
  ClipperLib::Clipper clpr;
  clpr.AddPolygons(patterncpolys,ClipperLib::ptSubject);
  clpr.AddPolygons(cpolys,ClipperLib::ptClip);
  ClipperLib::Polygons result;
  clpr.Execute(ClipperLib::ctIntersection, result, 
	       ClipperLib::pftEvenOdd, ClipperLib::pftNonZero);
  if (type==PolyInfill) { // reversal from evenodd clipping
    for (uint i = 0; i<result.size(); i+=2)
      std::reverse(result[i].begin(),result[i].end());
  }
  addInfillPolys(Clipping::getPolys(result, z, extrusionfactor));
}

EaglePolygon::EaglePolygon(QPolygonF _vertices, qreal _width, int _layer, qreal _spacing) {
	width = _width; layer = _layer; spacing = _spacing;
	sourcePoly.resize(_vertices.count());
	for (int i = 0; i < _vertices.count(); i++) {
		ClipperLib::long64 x = (ClipperLib::long64)(_vertices.at(i).x()*RES);
		ClipperLib::long64 y = (ClipperLib::long64)(_vertices.at(i).y()*RES);
		sourcePoly[0].push_back(ClipperLib::IntPoint(x,y));
	}

	ClipperLib::Clipper c;
	c.AddPolygons(sourcePoly, ClipperLib::ptSubject);
	c.Execute(ClipperLib::ctUnion,sourcePoly); // only makes sure polys orientation is correct

	ClipperLib::OffsetPolygons(sourcePoly,buffedPoly, width*RES/2, ClipperLib::jtRound); // offset

	for (unsigned int i = 0; i < buffedPoly[0].size(); i++) {
		vertices.append(QPointF(buffedPoly[0].at(i).X/RES, buffedPoly[0].at(i).Y/RES));
	}
}

void
ClipperPolygons_to_Slic3rExPolygons(const ClipperLib::Polygons &input, Slic3r::ExPolygons &output)
{
    // init Clipper
    ClipperLib::Clipper clipper;
    clipper.Clear();
    
    // perform union
    clipper.AddPolygons(input, ClipperLib::ptSubject);
    ClipperLib::PolyTree* polytree = new ClipperLib::PolyTree();
    clipper.Execute(ClipperLib::ctUnion, *polytree, ClipperLib::pftEvenOdd, ClipperLib::pftEvenOdd);  // offset results work with both EvenOdd and NonZero
    
    // write to ExPolygons object
    output.clear();
    PolyTreeToExPolygons(*polytree, output);
    
    delete polytree;
}

//.........这里部分代码省略.........
                int fillAngle = 45;
                if (layerNr & 1) fillAngle += 90;
                //int sparseSteps[1] = {config.extrusionWidth};
                //generateConcentricInfill(part->skinOutline, fillPolygons, sparseSteps, 1);
                generateLineInfill(part->skinOutline, fillPolygons, config.extrusionWidth, config.extrusionWidth, config.infillOverlap, (part->bridgeAngle > -1) ? part->bridgeAngle : fillAngle);
                //int sparseSteps[2] = {config.extrusionWidth*5, config.extrusionWidth * 0.8};
                //generateConcentricInfill(part->sparseOutline, fillPolygons, sparseSteps, 2);
                if (config.sparseInfillLineDistance > 0)
                {
                    if (config.sparseInfillLineDistance > config.extrusionWidth * 4)
                    {
                        generateLineInfill(part->sparseOutline, fillPolygons, config.extrusionWidth, config.sparseInfillLineDistance * 2, config.infillOverlap, 45);
                        generateLineInfill(part->sparseOutline, fillPolygons, config.extrusionWidth, config.sparseInfillLineDistance * 2, config.infillOverlap, 45 + 90);
                    }
                    else
                    {
                        generateLineInfill(part->sparseOutline, fillPolygons, config.extrusionWidth, config.sparseInfillLineDistance, config.infillOverlap, fillAngle);
                    }
                }

                gcodeLayer.addPolygonsByOptimizer(fillPolygons, &fillConfig);
                
                //After a layer part, make sure the nozzle is inside the comb boundary, so we do not retract on the perimeter.
                gcodeLayer.moveInsideCombBoundary();
            }
            gcodeLayer.setCombBoundary(NULL);
        }
        if (config.supportAngle > -1)
        {
            if (config.supportExtruder > -1)
                gcodeLayer.setExtruder(config.supportExtruder);
            SupportPolyGenerator supportGenerator(storage.support, z, config.supportAngle, config.supportEverywhere > 0, config.supportXYDistance, config.supportZDistance);
            ClipperLib::Clipper supportClipper;
            supportClipper.AddPolygons(supportGenerator.polygons, ClipperLib::ptSubject);
            for(unsigned int volumeCnt = 0; volumeCnt < storage.volumes.size(); volumeCnt++)
            {
                SliceLayer* layer = &storage.volumes[volumeIdx].layers[layerNr];
                Polygons polys;
                for(unsigned int n=0; n<layer->parts.size(); n++)
                    for(unsigned int m=0; m<layer->parts[n].outline.size(); m++)
                        polys.push_back(layer->parts[n].outline[m]);
                ClipperLib::OffsetPolygons(polys, polys, config.supportXYDistance, ClipperLib::jtSquare, 2, false);
                supportClipper.AddPolygons(polys, ClipperLib::ptClip);
            }
            supportClipper.Execute(ClipperLib::ctDifference, supportGenerator.polygons);
            
            Polygons supportLines;
            if (config.supportLineDistance > 0)
            {
                if (config.supportLineDistance > config.extrusionWidth * 4)
                {
                    generateLineInfill(supportGenerator.polygons, supportLines, config.extrusionWidth, config.supportLineDistance*2, config.infillOverlap, 0);
                    generateLineInfill(supportGenerator.polygons, supportLines, config.extrusionWidth, config.supportLineDistance*2, config.infillOverlap, 90);
                }else{
                    generateLineInfill(supportGenerator.polygons, supportLines, config.extrusionWidth, config.supportLineDistance, config.infillOverlap, (layerNr & 1) ? 0 : 90);
                }
            }
            
            gcodeLayer.addPolygonsByOptimizer(supportGenerator.polygons, &supportConfig);
            gcodeLayer.addPolygonsByOptimizer(supportLines, &supportConfig);
        }

        //Finish the layer by applying speed corrections for minimal layer times and slowdown for the initial layer.
        if (int(layerNr) < config.initialSpeedupLayers)
        {
            int n = config.initialSpeedupLayers;