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()]);
}
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);
}
public static void GenerateRaftGCodeIfRequired(SliceDataStorage storage, ConfigSettings config, GCodeExport gcode)
{
if (ShouldGenerateRaft(config))
{
GCodePathConfig raftBaseConfig = new GCodePathConfig(config.firstLayerSpeed, config.extrusionWidth_um * 3, "SUPPORT");
GCodePathConfig raftMiddleConfig = new GCodePathConfig(config.raftPrintSpeed, config.raftInterfaceLinewidth_um, "SUPPORT");
GCodePathConfig raftSurfaceConfig = new GCodePathConfig((config.raftSurfacePrintSpeed > 0) ? config.raftSurfacePrintSpeed : config.raftPrintSpeed, config.raftSurfaceLinewidth_um, "SUPPORT");
// create the raft base
{
gcode.writeComment("LAYER:-3");
gcode.writeComment("RAFT BASE");
GCodePlanner gcodeLayer = new GCodePlanner(gcode, config.travelSpeed, config.minimumTravelToCauseRetraction_um);
if (config.supportExtruder > 0)
{
gcodeLayer.setExtruder(config.supportExtruder);
}
gcode.setZ(config.raftBaseThickness_um);
gcode.setExtrusion(config.raftBaseThickness_um, config.filamentDiameter_um, config.extrusionMultiplier);
gcodeLayer.writePolygonsByOptimizer(storage.raftOutline, raftBaseConfig);
Polygons raftLines = new Polygons();
Infill.GenerateLinePaths(storage.raftOutline, ref raftLines, config.raftBaseThickness_um, config.raftLineSpacing_um, config.infillExtendIntoPerimeter_um, 0);
gcodeLayer.writePolygonsByOptimizer(storage.skirt, raftBaseConfig);
gcodeLayer.writePolygonsByOptimizer(raftLines, raftBaseConfig);
gcodeLayer.writeGCode(false, config.raftBaseThickness_um);
}
if (config.raftFanSpeedPercent > 0)
{
gcode.writeFanCommand(config.raftFanSpeedPercent);
}
// raft middle layers
{
gcode.writeComment("LAYER:-2");
gcode.writeComment("RAFT MIDDLE");
GCodePlanner gcodeLayer = new GCodePlanner(gcode, config.travelSpeed, config.minimumTravelToCauseRetraction_um);
gcode.setZ(config.raftBaseThickness_um + config.raftInterfaceThicknes_um);
gcode.setExtrusion(config.raftInterfaceThicknes_um, config.filamentDiameter_um, config.extrusionMultiplier);
Polygons raftLines = new Polygons();
Infill.GenerateLinePaths(storage.raftOutline, ref raftLines, config.raftInterfaceLinewidth_um, config.raftInterfaceLineSpacing_um, config.infillExtendIntoPerimeter_um, 45);
gcodeLayer.writePolygonsByOptimizer(raftLines, raftMiddleConfig);
gcodeLayer.writeGCode(false, config.raftInterfaceThicknes_um);
}
for (int raftSurfaceLayer = 1; raftSurfaceLayer <= config.raftSurfaceLayers; raftSurfaceLayer++)
{
gcode.writeComment("LAYER:-1");
gcode.writeComment("RAFT SURFACE");
GCodePlanner gcodeLayer = new GCodePlanner(gcode, config.travelSpeed, config.minimumTravelToCauseRetraction_um);
gcode.setZ(config.raftBaseThickness_um + config.raftInterfaceThicknes_um + config.raftSurfaceThickness_um * raftSurfaceLayer);
gcode.setExtrusion(config.raftSurfaceThickness_um, config.filamentDiameter_um, config.extrusionMultiplier);
Polygons raftLines = new Polygons();
Infill.GenerateLinePaths(storage.raftOutline, ref raftLines, config.raftSurfaceLinewidth_um, config.raftSurfaceLineSpacing_um, config.infillExtendIntoPerimeter_um, 90 * raftSurfaceLayer);
gcodeLayer.writePolygonsByOptimizer(raftLines, raftSurfaceConfig);
gcodeLayer.writeGCode(false, config.raftInterfaceThicknes_um);
}
}
}
public static void GenerateRaftGCodeIfRequired(SliceDataStorage storage, ConfigSettings config, GCodeExport gcode)
{
if (ShouldGenerateRaft(config))
{
GCodePathConfig raftBaseConfig = new GCodePathConfig(config.firstLayerSpeed, config.raftBaseExtrusionWidth_um, "SUPPORT");
GCodePathConfig raftMiddleConfig = new GCodePathConfig(config.raftPrintSpeed, config.raftInterfaceExtrusionWidth_um, "SUPPORT");
GCodePathConfig raftSurfaceConfig = new GCodePathConfig((config.raftSurfacePrintSpeed > 0) ? config.raftSurfacePrintSpeed : config.raftPrintSpeed, config.raftSurfaceExtrusionWidth_um, "SUPPORT");
// create the raft base
{
gcode.writeComment("LAYER:-3");
gcode.writeComment("RAFT BASE");
GCodePlanner gcodeLayer = new GCodePlanner(gcode, config.travelSpeed, config.minimumTravelToCauseRetraction_um);
if (config.raftExtruder > 0)
{
// if we have a specified raft extruder use it
gcodeLayer.setExtruder(config.raftExtruder);
}
else if (config.supportExtruder > 0)
{
// else preserve the old behavior of using the support extruder if set.
gcodeLayer.setExtruder(config.supportExtruder);
}
gcode.setZ(config.raftBaseThickness_um);
gcode.setExtrusion(config.raftBaseThickness_um, config.filamentDiameter_um, config.extrusionMultiplier);
gcodeLayer.writePolygonsByOptimizer(storage.raftOutline, raftBaseConfig);
Polygons raftLines = new Polygons();
Infill.GenerateLinePaths(storage.raftOutline, ref raftLines, config.raftBaseLineSpacing_um, config.infillExtendIntoPerimeter_um, 0);
gcodeLayer.writePolygonsByOptimizer(storage.skirt, raftBaseConfig);
gcodeLayer.writePolygonsByOptimizer(raftLines, raftBaseConfig);
gcodeLayer.writeGCode(false, config.raftBaseThickness_um);
}
if (config.raftFanSpeedPercent > 0)
{
gcode.writeFanCommand(config.raftFanSpeedPercent);
}
// raft middle layers
{
gcode.writeComment("LAYER:-2");
gcode.writeComment("RAFT MIDDLE");
GCodePlanner gcodeLayer = new GCodePlanner(gcode, config.travelSpeed, config.minimumTravelToCauseRetraction_um);
gcode.setZ(config.raftBaseThickness_um + config.raftInterfaceThicknes_um);
gcode.setExtrusion(config.raftInterfaceThicknes_um, config.filamentDiameter_um, config.extrusionMultiplier);
Polygons raftLines = new Polygons();
Infill.GenerateLinePaths(storage.raftOutline, ref raftLines, config.raftInterfaceLineSpacing_um, config.infillExtendIntoPerimeter_um, 45);
gcodeLayer.writePolygonsByOptimizer(raftLines, raftMiddleConfig);
gcodeLayer.writeGCode(false, config.raftInterfaceThicknes_um);
}
for (int raftSurfaceIndex = 1; raftSurfaceIndex <= config.raftSurfaceLayers; raftSurfaceIndex++)
{
gcode.writeComment("LAYER:-1");
gcode.writeComment("RAFT SURFACE");
GCodePlanner gcodeLayer = new GCodePlanner(gcode, config.travelSpeed, config.minimumTravelToCauseRetraction_um);
gcode.setZ(config.raftBaseThickness_um + config.raftInterfaceThicknes_um + config.raftSurfaceThickness_um * raftSurfaceIndex);
gcode.setExtrusion(config.raftSurfaceThickness_um, config.filamentDiameter_um, config.extrusionMultiplier);
Polygons raftLines = new Polygons();
if (raftSurfaceIndex == config.raftSurfaceLayers)
{
// make sure the top layer of the raft is 90 degrees offset to the first layer of the part so that it has minimum contact points.
Infill.GenerateLinePaths(storage.raftOutline, ref raftLines, config.raftSurfaceLineSpacing_um, config.infillExtendIntoPerimeter_um, config.infillStartingAngle + 90);
}
else
{
Infill.GenerateLinePaths(storage.raftOutline, ref raftLines, config.raftSurfaceLineSpacing_um, config.infillExtendIntoPerimeter_um, 90 * raftSurfaceIndex);
}
gcodeLayer.writePolygonsByOptimizer(raftLines, raftSurfaceConfig);
gcodeLayer.writeGCode(false, config.raftInterfaceThicknes_um);
}
}
}
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);
}
}
//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);
}
Polygons fillPolygons = new Polygons();
Polygons bridgePolygons = new Polygons();
CalculateInfillData(storage, volumeIndex, layerIndex, extrusionWidth_um, part, ref fillPolygons, ref bridgePolygons);
// Write the bidge polgons out first so the perimeter will have more to hold to while bridging the gaps.
// It would be even better to slow down the perimeters that are part of bridges but that is a bit harder.
if (bridgePolygons.Count > 0)
{
gcode.writeFanCommand(config.bridgeFanSpeedPercent);
gcodeLayer.writePolygonsByOptimizer(bridgePolygons, bridgConfig);
gcode.writeFanCommand(fanSpeedPercent);
}
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);
}
}
}
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);
}