public async void BuildAllSlices()
{
// Main task is run on another thread,
// so that the UI thread does not block and we can update progress bar
// and display current built slice.
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue = 0;
this.data.SlicingInProgress = true;
this.data.ProgressBarColor = SliceModel.StateBrushes[0];
});
this.Original = SliceModel.GeometrizeModel(this.data.CurrentModel);
var bounds = this.data.CurrentModel.Bounds;
var transform = this.data.CurrentModel.Transform;
var min = Math.Min(bounds.X, bounds.Y);
var max = Math.Max(bounds.X + bounds.SizeX, bounds.Y + bounds.SizeY);
var size = Math.Min(this.data.SliceCanvas.ActualWidth, this.data.SliceCanvas.ActualHeight);
var scale = size / (max - min);
var dense_spacing = this.data.NozzleDiameter * 2.375; // Default dense_spacing == 0.95
this.SliceStore = Enumerable.Repeat <Slice>(null, this.data.MaxSliceIdx + 1).ToList();
Construct obj = Construct.Create(this.Original, transform);
// Genarate infills
var infill_struct = Polygon2D.GenerateInfill(
bounds.X, bounds.Y,
bounds.X + bounds.SizeX, bounds.Y + bounds.SizeY,
this.data.NozzleDiameter, this.data.InfillSpacing, this.data.UseInfill
);
var surface_struct = Polygon2D.GenerateInfill(
bounds.X, bounds.Y,
bounds.X + bounds.SizeX, bounds.Y + bounds.SizeY,
this.data.NozzleDiameter, dense_spacing, InfillType.SINGLE
);
var surface_struct_alt = Polygon2D.GenerateInfill(
bounds.X, bounds.Y,
bounds.X + bounds.SizeX, bounds.Y + bounds.SizeY,
this.data.NozzleDiameter, dense_spacing, InfillType.SINGLE_ROTATED
);
var support_struct = Polygon2D.GenerateInfill(
bounds.X, bounds.Y,
bounds.X + bounds.SizeX, bounds.Y + bounds.SizeY,
this.data.NozzleDiameter, this.data.SupportSpacing, this.data.UseSupport
);
await Task.Run(() =>
{
//// For debug, set `opt` to 1, else -1 for unlimited
var opt = new ParallelOptions()
{
MaxDegreeOfParallelism = -1
};
// Execute slicing
// Step 1: Find contours by slicing with Z plane and Erode
Parallel.For(0, this.data.MaxSliceIdx + 1, opt, (i) => {
// Construct slice
var slice = obj.Slice(bounds.Z + i *data.NozzleThickness,
data.NozzleThickness);
slice.SetNozzleHeight((i + 1) * data.NozzleThickness);
slice.Erode(data.NozzleDiameter / 2.0);
this.SliceStore[i] = slice;
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue++;
});
});
// Adjust Nozzle height to ignore empty bottom layers
var first_index = this.SliceStore.FindIndex(s => s.Polygons.Count > 0);
if (first_index > 0)
{
for (int i = 0; i < this.data.MaxSliceIdx + 1 - first_index; i++)
{
this.SliceStore[i + first_index].SetNozzleHeight((i + 1) * data.NozzleThickness);
}
}
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue = 0;
this.data.ProgressBarColor = SliceModel.StateBrushes[1];
});
// Step 2: Generate Support
for (int i = 0; i < this.data.MaxSliceIdx + 1; i++)
{
var j = this.data.MaxSliceIdx - i;
var current = this.SliceStore.ElementAtOrDefault(j);
var above = this.SliceStore.ElementAtOrDefault(j + 1);
current.GenerateSupport(above, this.data.NozzleThickness);
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue++;
});
}
;
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue = 0;
this.data.ProgressBarColor = SliceModel.StateBrushes[2];
});
// Step 3: Determine surfaces
// Compare with layer above and below to find and add floor/roofs.
Parallel.For(0, this.data.MaxSliceIdx + 1, opt, (i) => {
var slice = this.SliceStore[i];
// Determine surfaces
slice.DetermineSurfaces(this.SliceStore.ElementAtOrDefault(i - 1),
this.SliceStore.ElementAtOrDefault(i + 1));
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue++;
});
});
Parallel.For(0, this.data.MaxSliceIdx + 1, opt, (i) =>
{
this.SliceStore[i].AddFoundSurfaces();
});
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue = 0;
this.data.ProgressBarColor = SliceModel.StateBrushes[3];
});
// Step 4: Propagate roof/floors
var floors = new List <Polygon2D>();
var roofs = new List <Polygon2D>();
for (int i = 0; i < this.data.MaxSliceIdx + 1; i++)
{
var from_below = this.SliceStore.ElementAtOrDefault(i);
var from_above = this.SliceStore.ElementAtOrDefault(this.data.MaxSliceIdx - i);
if (from_below != null && from_below.Polygons.Count > 0)
{
// Get floors that need to be propagated
var propagate = from_below.Polygons
.Where(p => p.IsSurface && p.IsFloor)
.Select(p => { p.Shell = this.data.NumberOfShells - 1; return(p); })
.ToList(); // To list, else enumerator will select floors added in next statement
// Add floor polies from current that need to go up
from_below.Polygons.AddRange(
floors.Where(p => p.Shell > 0)
.Select(p => { p.Shell--; return(p); }));
floors.AddRange(propagate);
}
if (from_above != null && from_above.Polygons.Count > 0)
{
// Get roofs that need to be propagated
var propagate = from_above.Polygons
.Where(p => p.IsSurface && p.IsRoof)
.Select(p => { p.Shell = this.data.NumberOfShells - 1; return(p); })
.ToList(); // To list, else enumerator will select roofs added in next statement
// Add roof polies from current that need to go down
from_above.Polygons.AddRange(
roofs.Where(p => p.Shell > 0)
.Select(p => { p.Shell--; return(p); }));
roofs.AddRange(propagate);
}
floors = floors.Where(p => p.Shell > 0).ToList();
roofs = roofs.Where(p => p.Shell > 0).ToList();
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue++;
});
}
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.data.SlicingProgressValue = 0;
this.data.ProgressBarColor = SliceModel.StateBrushes[4];
});
// Step 5: Add shells and infill
Parallel.For(0, this.data.MaxSliceIdx + 1, opt, (i) => {
// Check for floor/roofs
var slice = this.SliceStore[i];
// Add shells
slice.AddShells(data.NumberOfShells, data.NozzleDiameter *dense_spacing);
// Add infill for surfaces
slice.AddDenseInfill(i % 2 == 0 ? surface_struct : surface_struct_alt);
slice.AddSupportInfill(support_struct, this.data.NozzleDiameter *dense_spacing,
this.data.UseSupport == InfillType.ZIGZAG || this.data.UseSupport < InfillType.RECTANGLE);
slice.AddInfill(infill_struct);
// Reverse order polies
slice.SortPolygons();
// Add shapes
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
if (i > 0)
{
slice.ToShapes(bounds.X, bounds.Y, scale, this.data.PreviewArrowThickness, this.data.PreviewStrokeThickness);
}
this.data.SlicingProgressValue++;
});
});
// Step 6: Add adhesion to ground plane
// WARNING Polies need to be sorted first (see slice.SortPolygons() above == OK)
first_index = this.SliceStore.FindIndex(s => s.Polygons.Count > 0);
if (first_index >= 0)
{
this.SliceStore[first_index].AddAdhesion(
this.data.UseAdhesion,
data.NozzleDiameter *dense_spacing,
true, this.data.AdhesionDistance);
}
else
{
first_index = this.SliceStore.FindIndex(s => s.FillPolygons.Count > 0);
if (first_index >= 0)
{
this.SliceStore[first_index].AddAdhesion(
this.data.UseAdhesion,
data.NozzleDiameter *dense_spacing,
false, this.data.AdhesionDistance);
}
}
System.Windows.Application.Current.Dispatcher.Invoke(() =>
{
this.Slice = this.SliceStore[0];
this.data.SliceShapes = this.Slice.ToShapes(bounds.X, bounds.Y, scale, this.data.PreviewArrowThickness, this.data.PreviewStrokeThickness);;
this.data.SliceCanvas.Children.Clear();
this.data.SliceShapes.ForEach(x => this.data.SliceCanvas.Children.Add(x));
this.data.SlicingProgressValue = 0;
this.data.ProgressBarColor = SliceModel.StateBrushes[0];
this.data.SlicingInProgress = false;
this.data.CurrentSliceIdx = 0;
});
});
}
