public void WriteQueuedGCode(long layerThickness_um)
{
GCodePathConfig lastConfig = null;
int extruderIndex = gcodeExport.GetExtruderIndex();
for (int pathIndex = 0; pathIndex < paths.Count; pathIndex++)
{
var path = paths[pathIndex];
if (extruderIndex != path.ExtruderIndex)
{
extruderIndex = path.ExtruderIndex;
gcodeExport.SwitchExtruder(extruderIndex);
}
else if (path.Retract != RetractType.None)
{
double timeOfMove = 0;
if (path.Config.LineWidthUM == 0)
{
var lengthToStart = (gcodeExport.GetPosition() - path.Polygon[0]).Length();
var lengthOfMove = lengthToStart + path.Polygon.PolygonLength();
timeOfMove = lengthOfMove / 1000.0 / path.Speed;
}
gcodeExport.WriteRetraction(timeOfMove, path.Retract == RetractType.Force);
}
if (lastConfig != path.Config && path.Config != travelConfig)
{
gcodeExport.WriteComment("TYPE:{0}".FormatWith(path.Config.GCodeComment));
lastConfig = path.Config;
}
if (path.FanPercent != -1)
{
gcodeExport.WriteFanCommand(path.FanPercent);
}
if (path.Polygon.Count == 1 &&
path.Config != travelConfig &&
(gcodeExport.GetPositionXY() - path.Polygon[0]).ShorterThen(path.Config.LineWidthUM * 2))
{
//Check for lots of small moves and combine them into one large line
IntPoint nextPosition = path.Polygon[0];
int i = pathIndex + 1;
while (i < paths.Count && paths[i].Polygon.Count == 1 && (nextPosition - paths[i].Polygon[0]).ShorterThen(path.Config.LineWidthUM * 2))
{
nextPosition = paths[i].Polygon[0];
i++;
}
if (paths[i - 1].Config == travelConfig)
{
i--;
}
if (i > pathIndex + 2)
{
nextPosition = gcodeExport.GetPosition();
for (int x = pathIndex; x < i - 1; x += 2)
{
long oldLen = (nextPosition - paths[x].Polygon[0]).Length();
IntPoint newPoint = (paths[x].Polygon[0] + paths[x + 1].Polygon[0]) / 2;
long newLen = (gcodeExport.GetPosition() - newPoint).Length();
if (newLen > 0)
{
gcodeExport.WriteMove(newPoint, path.Speed, (int)(path.Config.LineWidthUM * oldLen / newLen));
}
nextPosition = paths[x + 1].Polygon[0];
}
long lineWidth_um = path.Config.LineWidthUM;
if (paths[i - 1].Polygon[0].Width != 0)
{
lineWidth_um = paths[i - 1].Polygon[0].Width;
}
gcodeExport.WriteMove(paths[i - 1].Polygon[0], path.Speed, lineWidth_um);
pathIndex = i - 1;
continue;
}
}
bool spiralize = path.Config.Spiralize;
if (spiralize)
{
//Check if we are the last spiralize path in the list, if not, do not spiralize.
for (int m = pathIndex + 1; m < paths.Count; m++)
{
if (paths[m].Config.Spiralize)
{
spiralize = false;
}
}
}
if (spiralize) // if we are still in spiralize mode
{
//If we need to spiralize then raise the head slowly by 1 layer as this path progresses.
double totalLength = 0;
long z = gcodeExport.GetPositionZ();
IntPoint currentPosition = gcodeExport.GetPositionXY();
for (int pointIndex = 0; pointIndex < path.Polygon.Count; pointIndex++)
{
IntPoint nextPosition = path.Polygon[pointIndex];
totalLength += (currentPosition - nextPosition).LengthMm();
currentPosition = nextPosition;
}
double length = 0.0;
currentPosition = gcodeExport.GetPositionXY();
for (int i = 0; i < path.Polygon.Count; i++)
{
IntPoint nextPosition = path.Polygon[i];
length += (currentPosition - nextPosition).LengthMm();
currentPosition = nextPosition;
IntPoint nextExtrusion = path.Polygon[i];
nextExtrusion.Z = (int)(z + layerThickness_um * length / totalLength + .5);
gcodeExport.WriteMove(nextExtrusion, path.Speed, path.Config.LineWidthUM);
}
}
else
{
var loopStart = gcodeExport.GetPosition();
int pointCount = path.Polygon.Count;
bool outerPerimeter = path.Config.GCodeComment == "WALL-OUTER";
bool innerPerimeter = path.Config.GCodeComment == "WALL-INNER";
bool perimeter = outerPerimeter || innerPerimeter;
bool completeLoop = (pointCount > 0 && path.Polygon[pointCount - 1] == loopStart);
bool trimmed = perimeter && completeLoop && perimeterStartEndOverlapRatio < 1;
// This is test code to remove double drawn small perimeter lines.
if (trimmed)
{
long targetDistance = (long)(path.Config.LineWidthUM * (1 - perimeterStartEndOverlapRatio));
path = TrimGCodePathEnd(path, targetDistance);
// update the point count after trimming
pointCount = path.Polygon.Count;
}
for (int i = 0; i < pointCount; i++)
{
long lineWidth_um = path.Config.LineWidthUM;
if (path.Polygon[i].Width != 0)
{
lineWidth_um = path.Polygon[i].Width;
}
gcodeExport.WriteMove(path.Polygon[i], path.Speed, lineWidth_um);
}
if (trimmed)
{
// go back to the start of the loop
gcodeExport.WriteMove(loopStart, path.Speed, 0);
var length = path.Polygon.PolygonLength(false);
if (outerPerimeter &&
config.CoastAtEndDistance_um > 0 &&
length > config.CoastAtEndDistance_um)
{
//gcodeExport.WriteRetraction
var wipePoly = new Polygon(new IntPoint[] { loopStart });
wipePoly.AddRange(path.Polygon);
// then drive down it just a bit more to make sure we have a clean overlap
var extraMove = wipePoly.CutToLength(config.CoastAtEndDistance_um);
for (int i = 0; i < extraMove.Count; i++)
{
gcodeExport.WriteMove(extraMove[i], path.Speed, 0);
}
}
}
}
}
gcodeExport.UpdateLayerPrintTime();
}