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fffProcessor.cs
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fffProcessor.cs
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/*
This file is part of MatterSlice. A commandline utility for
generating 3D printing GCode.
Copyright (C) 2013 David Braam
Copyright (c) 2014, Lars Brubaker
MatterSlice 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 <http://www.gnu.org/licenses/>.
*/
using System;
using System.Collections.Generic;
using System.Diagnostics;
using MatterSlice.ClipperLib;
namespace MatterHackers.MatterSlice
{
using Polygon = List<IntPoint>;
using Polygons = List<List<IntPoint>>;
// Fused Filament Fabrication processor.
public class fffProcessor
{
int maxObjectHeight;
int fileNr;
GCodeExport gcode = new GCodeExport();
ConfigSettings config;
Stopwatch timeKeeper = new Stopwatch();
SimpleModel simpleModel = new SimpleModel();
OptimizedModel optomizedModel;
SliceDataStorage storage = new SliceDataStorage();
GCodePathConfig skirtConfig = new GCodePathConfig();
GCodePathConfig inset0Config = new GCodePathConfig();
GCodePathConfig insetXConfig = new GCodePathConfig();
GCodePathConfig fillConfig = new GCodePathConfig();
GCodePathConfig bridgConfig = new GCodePathConfig();
GCodePathConfig supportNormalConfig = new GCodePathConfig();
GCodePathConfig supportInterfaceConfig = new GCodePathConfig();
public fffProcessor(ConfigSettings config)
{
this.config = config;
fileNr = 1;
maxObjectHeight = 0;
}
public bool setTargetFile(string filename)
{
gcode.setFilename(filename);
{
gcode.writeComment("Generated with MatterSlice {0}".FormatWith(ConfigConstants.VERSION));
}
return gcode.isOpened();
}
public void DoProcessing()
{
if (!gcode.isOpened())
{
return;
}
timeKeeper.Restart();
LogOutput.log("Analyzing and optimizing model...\n");
optomizedModel = new OptimizedModel(simpleModel);
if (MatterSlice.Canceled)
{
return;
}
optomizedModel.SetPositionAndSize(simpleModel, config.positionToPlaceObjectCenter_um.X, config.positionToPlaceObjectCenter_um.Y, -config.bottomClipAmount_um, config.centerObjectInXy);
for (int volumeIndex = 0; volumeIndex < simpleModel.volumes.Count; volumeIndex++)
{
LogOutput.log(" Face counts: {0} . {1} {2:0.0}%\n".FormatWith((int)simpleModel.volumes[volumeIndex].faceTriangles.Count, (int)optomizedModel.volumes[volumeIndex].facesTriangle.Count, (double)(optomizedModel.volumes[volumeIndex].facesTriangle.Count) / (double)(simpleModel.volumes[volumeIndex].faceTriangles.Count) * 100));
LogOutput.log(" Vertex counts: {0} . {1} {2:0.0}%\n".FormatWith((int)simpleModel.volumes[volumeIndex].faceTriangles.Count * 3, (int)optomizedModel.volumes[volumeIndex].vertices.Count, (double)(optomizedModel.volumes[volumeIndex].vertices.Count) / (double)(simpleModel.volumes[volumeIndex].faceTriangles.Count * 3) * 100));
}
LogOutput.log("Optimize model {0:0.0}s \n".FormatWith(timeKeeper.Elapsed.Seconds));
timeKeeper.Reset();
Stopwatch timeKeeperTotal = new Stopwatch();
timeKeeperTotal.Start();
preSetup(config.extrusionWidth_um);
sliceModels(storage);
processSliceData(storage);
if (MatterSlice.Canceled)
{
return;
}
writeGCode(storage);
if (MatterSlice.Canceled)
{
return;
}
LogOutput.logProgress("process", 1, 1); //Report to the GUI that a file has been fully processed.
LogOutput.log("Total time elapsed {0:0.00}s.\n".FormatWith(timeKeeperTotal.Elapsed.Seconds));
}
public bool LoadStlFile(string input_filename)
{
preSetup(config.extrusionWidth_um);
timeKeeper.Restart();
LogOutput.log("Loading {0} from disk...\n".FormatWith(input_filename));
if (!SimpleModel.loadModelFromFile(simpleModel, input_filename, config.modelRotationMatrix))
{
LogOutput.logError("Failed to load model: {0}\n".FormatWith(input_filename));
return false;
}
LogOutput.log("Loaded from disk in {0:0.0}s\n".FormatWith(timeKeeper.Elapsed.Seconds));
return true;
}
public void finalize()
{
if (!gcode.isOpened())
{
return;
}
gcode.finalize(maxObjectHeight, config.travelSpeed, config.endCode);
gcode.Close();
}
void preSetup(int extrusionWidth)
{
skirtConfig.setData(config.insidePerimetersSpeed, extrusionWidth, "SKIRT");
inset0Config.setData(config.outsidePerimeterSpeed, extrusionWidth, "WALL-OUTER");
insetXConfig.setData(config.insidePerimetersSpeed, extrusionWidth, "WALL-INNER");
fillConfig.setData(config.infillSpeed, extrusionWidth, "FILL");
bridgConfig.setData(config.bridgeSpeed, extrusionWidth, "BRIDGE");
supportNormalConfig.setData(config.supportMaterialSpeed, extrusionWidth, "SUPPORT");
supportInterfaceConfig.setData(config.supportMaterialSpeed, extrusionWidth, "SUPPORT-INTERFACE");
for (int extruderIndex = 0; extruderIndex < ConfigConstants.MAX_EXTRUDERS; extruderIndex++)
{
gcode.setExtruderOffset(extruderIndex, config.extruderOffsets[extruderIndex] * 1000, -config.zOffset_um);
}
gcode.SetOutputType(config.outputType);
gcode.setRetractionSettings(config.retractionOnTravel, config.retractionSpeed, config.retractionOnExtruderSwitch, config.minimumExtrusionBeforeRetraction, config.retractionZHop);
}
void sliceModels(SliceDataStorage storage)
{
timeKeeper.Restart();
#if False
optomizedModel.saveDebugSTL("debug_output.stl");
#endif
LogOutput.log("Slicing model...\n");
List<Slicer> slicerList = new List<Slicer>();
for (int volumeIndex = 0; volumeIndex < optomizedModel.volumes.Count; volumeIndex++)
{
Slicer slicer = new Slicer(optomizedModel.volumes[volumeIndex], config);
slicerList.Add(slicer);
}
#if false
slicerList[0].DumpSegmentsToGcode("Volume 0 Segments.gcode");
slicerList[0].DumpPolygonsToGcode("Volume 0 Polygons.gcode");
slicerList[0].DumpPolygonsToHTML("Volume 0 Polygons.html");
#endif
LogOutput.log("Sliced model in {0:0.0}s\n".FormatWith(timeKeeper.Elapsed.Seconds));
timeKeeper.Restart();
LogOutput.log("Generating support map...\n");
storage.support.GenerateSupportGrid(optomizedModel, config);
storage.modelSize = optomizedModel.size_um;
storage.modelMin = optomizedModel.minXYZ_um;
storage.modelMax = optomizedModel.maxXYZ_um;
LogOutput.log("Generating layer parts...\n");
for (int volumeIndex = 0; volumeIndex < slicerList.Count; volumeIndex++)
{
storage.volumes.Add(new SliceVolumeStorage());
LayerPart.createLayerParts(storage.volumes[volumeIndex], slicerList[volumeIndex], config.repairOverlaps);
if (config.enableRaft)
{
//Add the raft offset to each layer.
for (int layerNr = 0; layerNr < storage.volumes[volumeIndex].layers.Count; layerNr++)
{
storage.volumes[volumeIndex].layers[layerNr].printZ += config.raftBaseThickness_um + config.raftInterfaceThicknes_um;
}
}
}
LogOutput.log("Generated layer parts in {0:0.0}s\n".FormatWith(timeKeeper.Elapsed.Seconds));
timeKeeper.Restart();
}
void processSliceData(SliceDataStorage storage)
{
MultiVolumes.RemoveVolumesIntersections(storage.volumes);
MultiVolumes.OverlapMultipleVolumesSlightly(storage.volumes, config.multiVolumeOverlapPercent);
#if False
LayerPart.dumpLayerparts(storage, "output.html");
#endif
int totalLayers = storage.volumes[0].layers.Count;
#if DEBUG
for (int volumeIndex = 1; volumeIndex < storage.volumes.Count; volumeIndex++)
{
if (totalLayers != storage.volumes[volumeIndex].layers.Count)
{
throw new Exception("All the valumes must have the same number of layers (they just can have empty layers).");
}
}
#endif
for (int layerIndex = 0; layerIndex < totalLayers; layerIndex++)
{
for (int volumeIndex = 0; volumeIndex < storage.volumes.Count; volumeIndex++)
{
if (MatterSlice.Canceled)
{
return;
}
int insetCount = config.numberOfPerimeters;
if (config.continuousSpiralOuterPerimeter && (int)(layerIndex) < config.numberOfBottomLayers && layerIndex % 2 == 1)
{
//Add extra insets every 2 layers when spiralizing, this makes bottoms of cups watertight.
insetCount += 5;
}
SliceLayer layer = storage.volumes[volumeIndex].layers[layerIndex];
int extrusionWidth = config.extrusionWidth_um;
if (layerIndex == 0)
{
extrusionWidth = config.firstLayerExtrusionWidth_um;
}
Inset.generateInsets(layer, extrusionWidth, insetCount);
}
LogOutput.log("Creating Insets {0}/{1}\n".FormatWith(layerIndex + 1, totalLayers));
}
if (config.wipeShieldDistanceFromShapes_um > 0)
{
CreateWipeShields(storage, totalLayers);
}
LogOutput.log("Generated inset in {0:0.0}s\n".FormatWith(timeKeeper.Elapsed.Seconds));
timeKeeper.Restart();
for (int layerIndex = 0; layerIndex < totalLayers; layerIndex++)
{
if (MatterSlice.Canceled)
{
return;
}
//Only generate bottom and top layers and infill for the first X layers when spiralize is choosen.
if (!config.continuousSpiralOuterPerimeter || (int)(layerIndex) < config.numberOfBottomLayers)
{
for (int volumeIndex = 0; volumeIndex < storage.volumes.Count; volumeIndex++)
{
int extrusionWidth = config.extrusionWidth_um;
if (layerIndex == 0)
{
extrusionWidth = config.firstLayerExtrusionWidth_um;
}
Skin.generateTopAndBottomLayers(layerIndex, storage.volumes[volumeIndex], extrusionWidth, config.numberOfBottomLayers, config.numberOfTopLayers);
Skin.generateSparse(layerIndex, storage.volumes[volumeIndex], extrusionWidth, config.numberOfBottomLayers, config.numberOfTopLayers);
}
}
LogOutput.log("Creating Top & Bottom Layers {0}/{1}\n".FormatWith(layerIndex + 1, totalLayers));
}
LogOutput.log("Generated top bottom layers in {0:0.0}s\n".FormatWith(timeKeeper.Elapsed.Seconds));
timeKeeper.Restart();
if (config.wipeTowerSize_um > 0)
{
Polygon p = new Polygon();
storage.wipeTower.Add(p);
p.Add(new IntPoint(storage.modelMin.x - 3000, storage.modelMax.y + 3000));
p.Add(new IntPoint(storage.modelMin.x - 3000, storage.modelMax.y + 3000 + config.wipeTowerSize_um));
p.Add(new IntPoint(storage.modelMin.x - 3000 - config.wipeTowerSize_um, storage.modelMax.y + 3000 + config.wipeTowerSize_um));
p.Add(new IntPoint(storage.modelMin.x - 3000 - config.wipeTowerSize_um, storage.modelMax.y + 3000));
storage.wipePoint = new IntPoint(storage.modelMin.x - 3000 - config.wipeTowerSize_um / 2, storage.modelMax.y + 3000 + config.wipeTowerSize_um / 2);
}
if (config.enableRaft)
{
Raft.GenerateRaftOutlines(storage, config.raftExtraDistanceAroundPart_um);
Skirt.generateSkirt(storage,
config.skirtDistance_um + config.raftBaseLineSpacing_um,
config.raftBaseLineSpacing_um,
config.numberOfSkirtLoops,
config.skirtMinLength_um,
config.raftBaseThickness_um);
}
else
{
Skirt.generateSkirt(storage,
config.skirtDistance_um,
config.firstLayerExtrusionWidth_um,
config.numberOfSkirtLoops,
config.skirtMinLength_um,
config.firstLayerThickness_um);
}
}
private void CreateWipeShields(SliceDataStorage storage, int totalLayers)
{
for (int layerNr = 0; layerNr < totalLayers; layerNr++)
{
Polygons wipeShield = new Polygons();
for (int volumeIdx = 0; volumeIdx < storage.volumes.Count; volumeIdx++)
{
for (int partNr = 0; partNr < storage.volumes[volumeIdx].layers[layerNr].parts.Count; partNr++)
{
wipeShield = wipeShield.CreateUnion(storage.volumes[volumeIdx].layers[layerNr].parts[partNr].outline.Offset(config.wipeShieldDistanceFromShapes_um));
}
}
storage.wipeShield.Add(wipeShield);
}
for (int layerIndex = 0; layerIndex < totalLayers; layerIndex++)
{
storage.wipeShield[layerIndex] = storage.wipeShield[layerIndex].Offset(-1000).Offset(1000);
}
int offsetAngle = (int)Math.Tan(60.0 * Math.PI / 180) * config.layerThickness_um;//Allow for a 60deg angle in the wipeShield.
for (int layerNr = 1; layerNr < totalLayers; layerNr++)
{
storage.wipeShield[layerNr] = storage.wipeShield[layerNr].CreateUnion(storage.wipeShield[layerNr - 1].Offset(-offsetAngle));
}
for (int layerNr = totalLayers - 1; layerNr > 0; layerNr--)
{
storage.wipeShield[layerNr - 1] = storage.wipeShield[layerNr - 1].CreateUnion(storage.wipeShield[layerNr].Offset(-offsetAngle));
}
}
void writeGCode(SliceDataStorage storage)
{
gcode.writeComment("filamentDiameter = {0}".FormatWith(config.filamentDiameter));
gcode.writeComment("extrusionWidth = {0}".FormatWith(config.extrusionWidth));
gcode.writeComment("firstLayerExtrusionWidth = {0}".FormatWith(config.firstLayerExtrusionWidth));
gcode.writeComment("layerThickness = {0}".FormatWith(config.layerThickness));
gcode.writeComment("firstLayerThickness = {0}".FormatWith(config.firstLayerThickness));
if (fileNr == 1)
{
if (gcode.GetOutputType() == ConfigConstants.OUTPUT_TYPE.ULTIGCODE)
{
gcode.writeComment("TYPE:UltiGCode");
gcode.writeComment("TIME:<__TIME__>");
gcode.writeComment("MATERIAL:<FILAMENT>");
gcode.writeComment("MATERIAL2:<FILAMEN2>");
}
gcode.writeCode(config.startCode);
if (gcode.GetOutputType() == ConfigConstants.OUTPUT_TYPE.BFB)
{
gcode.writeComment("enable auto-retraction");
gcode.writeLine("M227 S{0} P{1}".FormatWith(config.retractionOnTravel * 2560, config.retractionOnTravel * 2560));
}
}
else
{
gcode.writeFanCommand(0);
gcode.resetExtrusionValue();
gcode.writeRetraction();
gcode.setZ(maxObjectHeight + 5000);
gcode.writeMove(gcode.getPositionXY(), config.travelSpeed, 0);
gcode.writeMove(new IntPoint(storage.modelMin.x, storage.modelMin.y), config.travelSpeed, 0);
}
fileNr++;
int totalLayers = storage.volumes[0].layers.Count;
// let's remove any of the layers on top that are empty
{
for (int layerIndex = totalLayers - 1; layerIndex >= 0; layerIndex--)
{
bool layerHasData = false;
foreach (SliceVolumeStorage currentVolume in storage.volumes)
{
SliceLayer currentLayer = currentVolume.layers[layerIndex];
for (int partIndex = 0; partIndex < currentVolume.layers[layerIndex].parts.Count; partIndex++)
{
SliceLayerPart currentPart = currentLayer.parts[partIndex];
if (currentPart.outline.Count > 0)
{
layerHasData = true;
break;
}
}
}
if (layerHasData)
{
break;
}
totalLayers--;
}
}
gcode.writeComment("Layer count: {0}".FormatWith(totalLayers));
// keep the raft generation code inside of raft
Raft.GenerateRaftGCodeIfRequired(storage, config, gcode);
int volumeIdx = 0;
for (int layerIndex = 0; layerIndex < totalLayers; layerIndex++)
{
if (MatterSlice.Canceled)
{
return;
}
LogOutput.log("Writing Layers {0}/{1}\n".FormatWith(layerIndex + 1, totalLayers));
LogOutput.logProgress("export", layerIndex + 1, totalLayers);
int extrusionWidth_um = config.extrusionWidth_um;
if (layerIndex == 0)
{
extrusionWidth_um = config.firstLayerExtrusionWidth_um;
}
if (layerIndex == 0)
{
skirtConfig.setData(config.firstLayerSpeed, extrusionWidth_um, "SKIRT");
inset0Config.setData(config.firstLayerSpeed, extrusionWidth_um, "WALL-OUTER");
insetXConfig.setData(config.firstLayerSpeed, extrusionWidth_um, "WALL-INNER");
fillConfig.setData(config.firstLayerSpeed, extrusionWidth_um, "FILL");
bridgConfig.setData(config.firstLayerSpeed, extrusionWidth_um, "BRIDGE");
}
else
{
skirtConfig.setData(config.insidePerimetersSpeed, extrusionWidth_um, "SKIRT");
inset0Config.setData(config.outsidePerimeterSpeed, extrusionWidth_um, "WALL-OUTER");
insetXConfig.setData(config.insidePerimetersSpeed, extrusionWidth_um, "WALL-INNER");
fillConfig.setData(config.infillSpeed, extrusionWidth_um, "FILL");
bridgConfig.setData(config.bridgeSpeed, extrusionWidth_um, "BRIDGE");
}
supportNormalConfig.setData(config.supportMaterialSpeed, config.supportExtrusionWidth_um, "SUPPORT");
supportInterfaceConfig.setData(config.supportMaterialSpeed, config.extrusionWidth_um, "SUPPORT-INTERFACE");
gcode.writeComment("LAYER:{0}".FormatWith(layerIndex));
if (layerIndex == 0)
{
gcode.setExtrusion(config.firstLayerThickness_um, config.filamentDiameter_um, config.extrusionMultiplier);
}
else
{
gcode.setExtrusion(config.layerThickness_um, config.filamentDiameter_um, config.extrusionMultiplier);
}
GCodePlanner gcodeLayer = new GCodePlanner(gcode, config.travelSpeed, config.minimumTravelToCauseRetraction_um);
// get the correct height for this layer
int z = config.firstLayerThickness_um + layerIndex * config.layerThickness_um;
if (config.enableRaft)
{
z += config.raftBaseThickness_um + config.raftInterfaceThicknes_um + config.raftSurfaceLayers * config.raftSurfaceThickness_um;
if (layerIndex == 0)
{
// We only raise the first layer of the print up by the air gap.
// To give it:
// Less press into the raft
// More time to cool
// more surface area to air while extruding
z += config.raftAirGap_um;
}
}
gcode.setZ(z);
bool printSupportFirst = (storage.support.generated && config.supportExtruder > 0 && config.supportExtruder == gcodeLayer.getExtruder());
if (printSupportFirst)
{
AddSupportToGCode(storage, gcodeLayer, layerIndex, config);
}
int fanSpeedPercent = GetFanSpeed(layerIndex, gcodeLayer);
for (int volumeCnt = 0; volumeCnt < storage.volumes.Count; volumeCnt++)
{
if (volumeCnt > 0)
{
volumeIdx = (volumeIdx + 1) % storage.volumes.Count;
}
AddVolumeLayerToGCode(storage, gcodeLayer, volumeIdx, layerIndex, extrusionWidth_um, fanSpeedPercent);
}
if (!printSupportFirst)
{
AddSupportToGCode(storage, gcodeLayer, layerIndex, config);
}
//Finish the layer by applying speed corrections for minimum layer times.
gcodeLayer.forceMinimumLayerTime(config.minimumLayerTimeSeconds, config.minimumPrintingSpeed);
gcode.writeFanCommand(fanSpeedPercent);
int currentLayerThickness_um = config.layerThickness_um;
if (layerIndex <= 0)
{
currentLayerThickness_um = config.firstLayerThickness_um;
}
gcodeLayer.writeGCode(config.doCoolHeadLift, currentLayerThickness_um);
}
LogOutput.log("Wrote layers in {0:0.00}s.\n".FormatWith(timeKeeper.Elapsed.Seconds));
timeKeeper.Restart();
gcode.tellFileSize();
gcode.writeFanCommand(0);
//Store the object height for when we are printing multiple objects, as we need to clear every one of them when moving to the next position.
maxObjectHeight = Math.Max(maxObjectHeight, storage.modelSize.z);
}
private int GetFanSpeed(int layerIndex, GCodePlanner gcodeLayer)
{
int fanSpeedPercent = config.fanSpeedMinPercent;
if (gcodeLayer.getExtrudeSpeedFactor() <= 50)
{
fanSpeedPercent = config.fanSpeedMaxPercent;
}
else
{
int n = gcodeLayer.getExtrudeSpeedFactor() - 50;
fanSpeedPercent = config.fanSpeedMinPercent * n / 50 + config.fanSpeedMaxPercent * (50 - n) / 50;
}
if (layerIndex < config.firstLayerToAllowFan)
{
// Don't allow the fan below this layer
fanSpeedPercent = 0;
}
return fanSpeedPercent;
}
//Add a single layer from a single mesh-volume to the GCode
void AddVolumeLayerToGCode(SliceDataStorage storage, GCodePlanner gcodeLayer, int volumeIndex, int layerIndex, int extrusionWidth_um, int fanSpeedPercent)
{
int prevExtruder = gcodeLayer.getExtruder();
bool extruderChanged = gcodeLayer.setExtruder(volumeIndex);
if (layerIndex == 0 && volumeIndex == 0 && !Raft.ShouldGenerateRaft(config))
{
if (storage.skirt.Count > 0
&& storage.skirt[0].Count > 0)
{
IntPoint lowestPoint = storage.skirt[0][0];
// lets make sure we start with the most outside loop
foreach (Polygon polygon in storage.skirt)
{
foreach (IntPoint position in polygon)
{
if (position.Y < lowestPoint.Y)
{
lowestPoint = polygon[0];
}
}
}
gcodeLayer.writeTravel(lowestPoint);
}
gcodeLayer.writePolygonsByOptimizer(storage.skirt, skirtConfig);
}
SliceLayer layer = storage.volumes[volumeIndex].layers[layerIndex];
if (extruderChanged)
{
addWipeTower(storage, gcodeLayer, layerIndex, prevExtruder, extrusionWidth_um);
}
if (storage.wipeShield.Count > 0 && storage.volumes.Count > 1)
{
gcodeLayer.setAlwaysRetract(true);
gcodeLayer.writePolygonsByOptimizer(storage.wipeShield[layerIndex], skirtConfig);
gcodeLayer.setAlwaysRetract(!config.avoidCrossingPerimeters);
}
PathOrderOptimizer partOrderOptimizer = new PathOrderOptimizer(new IntPoint());
for (int partIndex = 0; partIndex < layer.parts.Count; partIndex++)
{
partOrderOptimizer.AddPolygon(layer.parts[partIndex].insets[0][0]);
}
partOrderOptimizer.Optimize();
for (int partCounter = 0; partCounter < partOrderOptimizer.bestPolygonOrderIndex.Count; partCounter++)
{
SliceLayerPart part = layer.parts[partOrderOptimizer.bestPolygonOrderIndex[partCounter]];
if (config.avoidCrossingPerimeters)
{
gcodeLayer.SetOuterPerimetersToAvoidCrossing(part.combBoundery);
}
else
{
gcodeLayer.setAlwaysRetract(true);
}
if (config.numberOfPerimeters > 0)
{
if (partCounter > 0)
{
gcodeLayer.forceRetract();
}
if (config.continuousSpiralOuterPerimeter)
{
if (layerIndex >= config.numberOfBottomLayers)
{
inset0Config.spiralize = true;
}
if (layerIndex == config.numberOfBottomLayers && part.insets.Count > 0)
{
gcodeLayer.writePolygonsByOptimizer(part.insets[0], insetXConfig);
}
}
// If we are on the very first layer we start with the outside in so that we can stick to the bed better.
if (config.outsidePerimetersFirst || layerIndex == 0)
{
// First the outside (this helps with accuracy)
if (part.insets.Count > 0)
{
gcodeLayer.writePolygonsByOptimizer(part.insets[0], inset0Config);
}
for (int perimeterIndex = 1; perimeterIndex < part.insets.Count; perimeterIndex++)
{
gcodeLayer.writePolygonsByOptimizer(part.insets[perimeterIndex], insetXConfig);
}
}
else // This is so we can do overhanges better (the outside can stick a bit to the inside).
{
// Print everything but the first perimeter from the outside in so the little parts have more to stick to.
for (int perimeterIndex = 1; perimeterIndex < part.insets.Count; perimeterIndex++)
{
gcodeLayer.writePolygonsByOptimizer(part.insets[perimeterIndex], insetXConfig);
}
// then 0
if (part.insets.Count > 0)
{
gcodeLayer.writePolygonsByOptimizer(part.insets[0], inset0Config);
}
}
}
Polygons fillPolygons = new Polygons();
Polygons bridgePolygons = new Polygons();
// generate infill for outline including bridging
foreach(Polygons outline in part.skinOutline.SplitIntoParts())
{
double partFillAngle = config.infillStartingAngle;
if ((layerIndex & 1) == 1)
{
partFillAngle += 90;
}
if (layerIndex > 0)
{
double bridgeAngle;
if (Bridge.BridgeAngle(outline, storage.volumes[volumeIndex].layers[layerIndex - 1], out bridgeAngle))
{
Infill.GenerateLinePaths(outline, ref bridgePolygons, extrusionWidth_um, config.infillExtendIntoPerimeter_um, bridgeAngle);
}
else
{
Infill.GenerateLinePaths(outline, ref fillPolygons, extrusionWidth_um, config.infillExtendIntoPerimeter_um, partFillAngle);
}
}
else
{
Infill.GenerateLinePaths(outline, ref fillPolygons, extrusionWidth_um, config.infillExtendIntoPerimeter_um, partFillAngle);
}
}
double fillAngle = config.infillStartingAngle;
// generate the infill for this part on this layer
if (config.infillPercent > 0)
{
switch (config.infillType)
{
case ConfigConstants.INFILL_TYPE.LINES:
if ((layerIndex & 1) == 1)
{
fillAngle += 90;
}
Infill.GenerateLineInfill(config, part.sparseOutline, ref fillPolygons, extrusionWidth_um, fillAngle);
break;
case ConfigConstants.INFILL_TYPE.GRID:
Infill.GenerateGridInfill(config, part.sparseOutline, ref fillPolygons, extrusionWidth_um, fillAngle);
break;
case ConfigConstants.INFILL_TYPE.TRIANGLES:
Infill.GenerateTriangleInfill(config, part.sparseOutline, ref fillPolygons, extrusionWidth_um, fillAngle, layer.printZ);
break;
case ConfigConstants.INFILL_TYPE.CONCENTRIC:
Infill.generateConcentricInfill(config, part.sparseOutline, ref fillPolygons, extrusionWidth_um, fillAngle);
break;
default:
throw new NotImplementedException();
}
}
if (bridgePolygons.Count > 0)
{
gcode.writeFanCommand(config.bridgeFanSpeedPercent);
gcodeLayer.writePolygonsByOptimizer(bridgePolygons, bridgConfig);
gcode.writeFanCommand(fanSpeedPercent);
}
gcodeLayer.writePolygonsByOptimizer(fillPolygons, fillConfig);
//After a layer part, make sure the nozzle is inside the comb boundary, so we do not retract on the perimeter.
if (!config.continuousSpiralOuterPerimeter || layerIndex < config.numberOfBottomLayers)
{
gcodeLayer.MoveInsideTheOuterPerimeter(extrusionWidth_um * 2);
}
}
gcodeLayer.SetOuterPerimetersToAvoidCrossing(null);
}
void AddSupportToGCode(SliceDataStorage storage, GCodePlanner gcodeLayer, int layerIndex, ConfigSettings config)
{
if (!storage.support.generated)
{
return;
}
if (config.supportExtruder > -1)
{
int prevExtruder = gcodeLayer.getExtruder();
if (gcodeLayer.setExtruder(config.supportExtruder))
{
addWipeTower(storage, gcodeLayer, layerIndex, prevExtruder, config.extrusionWidth_um);
}
if (storage.wipeShield.Count > 0 && storage.volumes.Count == 1)
{
gcodeLayer.setAlwaysRetract(true);
gcodeLayer.writePolygonsByOptimizer(storage.wipeShield[layerIndex], skirtConfig);
gcodeLayer.setAlwaysRetract(config.avoidCrossingPerimeters);
}
}
int currentZHeight_um = config.firstLayerThickness_um;
if (layerIndex == 0)
{
currentZHeight_um /= 2;
}
else
{
if(layerIndex > 1)
{
currentZHeight_um += (layerIndex-1) * config.layerThickness_um;
}
currentZHeight_um += config.layerThickness_um / 2;
}
SupportPolyGenerator supportGenerator = new SupportPolyGenerator(storage.support, currentZHeight_um);
WriteSupportPolygons(storage, gcodeLayer, layerIndex, config, supportGenerator.supportPolygons, SupportType.General);
if (config.supportInterfaceExtruder != -1
&& config.supportInterfaceExtruder != config.supportExtruder)
{
gcodeLayer.setExtruder(config.supportInterfaceExtruder);
}
WriteSupportPolygons(storage, gcodeLayer, layerIndex, config, supportGenerator.interfacePolygons, SupportType.Interface);
}
enum SupportType { General, Interface };
private void WriteSupportPolygons(SliceDataStorage storage, GCodePlanner gcodeLayer, int layerIndex, ConfigSettings config, Polygons supportPolygons, SupportType interfaceLayer)
{
for (int volumeIndex = 0; volumeIndex < storage.volumes.Count; volumeIndex++)
{
SliceLayer layer = storage.volumes[volumeIndex].layers[layerIndex];
for (int partIndex = 0; partIndex < layer.parts.Count; partIndex++)
{
supportPolygons = supportPolygons.CreateDifference(layer.parts[partIndex].outline.Offset(config.supportXYDistance_um));
}
}
//Contract and expand the support polygons so small sections are removed and the final polygon is smoothed a bit.
supportPolygons = supportPolygons.Offset(-config.extrusionWidth_um * 1);
supportPolygons = supportPolygons.Offset(config.extrusionWidth_um * 1);
List<Polygons> supportIslands = supportPolygons.SplitIntoParts();
PathOrderOptimizer islandOrderOptimizer = new PathOrderOptimizer(gcode.getPositionXY());
for (int islandIndex = 0; islandIndex < supportIslands.Count; islandIndex++)
{
islandOrderOptimizer.AddPolygon(supportIslands[islandIndex][0]);
}
islandOrderOptimizer.Optimize();
for (int islandIndex = 0; islandIndex < supportIslands.Count; islandIndex++)
{
Polygons island = supportIslands[islandOrderOptimizer.bestPolygonOrderIndex[islandIndex]];
Polygons supportLines = new Polygons();
if (config.supportLineSpacing_um > 0)
{
switch (interfaceLayer)
{
case SupportType.Interface:
Infill.GenerateLineInfill(config, island, ref supportLines, config.extrusionWidth_um, config.supportInfillStartingAngle + 90, config.extrusionWidth_um);
break;
case SupportType.General:
switch (config.supportType)
{
case ConfigConstants.SUPPORT_TYPE.GRID:
Infill.GenerateGridInfill(config, island, ref supportLines, config.supportExtrusionWidth_um, config.supportInfillStartingAngle, config.supportLineSpacing_um);
break;
case ConfigConstants.SUPPORT_TYPE.LINES:
Infill.GenerateLineInfill(config, island, ref supportLines, config.supportExtrusionWidth_um, config.supportInfillStartingAngle, config.supportLineSpacing_um);
break;
}
break;
default:
throw new NotImplementedException();
}
}
if (config.avoidCrossingPerimeters)
{
gcodeLayer.SetOuterPerimetersToAvoidCrossing(island);
}
switch (interfaceLayer)
{
case SupportType.Interface:
gcodeLayer.writePolygonsByOptimizer(supportLines, supportInterfaceConfig);
break;
case SupportType.General:
if (config.supportType == ConfigConstants.SUPPORT_TYPE.GRID)
{
gcodeLayer.writePolygonsByOptimizer(island, supportNormalConfig);
}
gcodeLayer.writePolygonsByOptimizer(supportLines, supportNormalConfig);
break;
default:
throw new NotImplementedException();
}
gcodeLayer.SetOuterPerimetersToAvoidCrossing(null);
}
}
void addWipeTower(SliceDataStorage storage, GCodePlanner gcodeLayer, int layerNr, int prevExtruder, int extrusionWidth_um)
{
if (config.wipeTowerSize_um < 1)
{
return;
}
//If we changed extruder, print the wipe/prime tower for this nozzle;
gcodeLayer.writePolygonsByOptimizer(storage.wipeTower, supportInterfaceConfig);
Polygons fillPolygons = new Polygons();
Infill.GenerateLinePaths(storage.wipeTower, ref fillPolygons, extrusionWidth_um, config.infillExtendIntoPerimeter_um, 45 + 90 * (layerNr % 2));
gcodeLayer.writePolygonsByOptimizer(fillPolygons, supportInterfaceConfig);
//Make sure we wipe the old extruder on the wipe tower.
gcodeLayer.writeTravel(storage.wipePoint - config.extruderOffsets[prevExtruder] + config.extruderOffsets[gcodeLayer.getExtruder()]);
}
public void Cancel()
{
if (gcode.isOpened())
{
gcode.Close();
}
}
}
}