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outer gear working with new system

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This commit is contained in:
LarsBrubaker 2020-06-17 08:05:05 -07:00
parent 42b9a76dbf
commit bea5d0da6c
2 changed files with 19 additions and 14 deletions
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31
MatterControlLib/DesignTools/Primitives/Gear2D.cs
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@ -251,12 +251,13 @@ namespace MatterHackers.MatterControl.DesignTools
{
var output = new Polygons();
output.AddRange(debugData[0]);
var offset = debugData[0].GetBounds().Height + 2000;
var top = debugData[0].GetBounds().Top;
for (int i = 1; i < debugData.Count; i++)
{
offset += debugData[i-1].GetBounds().Height + 2;
output.AddRange(debugData[i].Translate(0, offset));
offset += debugData[i].GetBounds().Height + 2;
var offset = top - debugData[i].GetBounds().Bottom + 2000;
var offsetPolys = debugData[i].Translate(0, offset);
output.AddRange(offsetPolys);
top = offsetPolys.GetBounds().Top;
}
shape = output;
@ -581,27 +582,30 @@ namespace MatterHackers.MatterControl.DesignTools
private Polygons CreateExternalGearShape()
{
var tooth = this.CreateSingleTooth();
debugData.Add(new Polygons() { tooth.tooth });
var toothParts = this.CreateSingleTooth();
// we could now take the tooth cutout, rotate it tooth count times and union the various slices together into a complete gear.
// However, the union operations become more and more complex as the complete gear is built up.
// So instead we capture the outer path of the tooth and concatenate rotated versions of this path into a complete outer gear path.
// Concatenating paths is inexpensive resulting in significantly faster execution.
var outlinePaths = new Polygon();
// first we need to find the corner that sits at the center
for (var i = 1; i < this.ToothCount; i++)
var tooth = toothParts.tooth;
debugData.Add(new Polygons() { tooth });
var gearShape = new Polygons();
for (var i = 0; i < this.ToothCount; i++)
{
var angle = i * this.AngleToothToTooth;
var radians = MathHelper.DegreesToRadians(angle);
var rotatedCorner = tooth.tooth.Rotate(radians);
outlinePaths.AddRange(rotatedCorner);
var rotatedCorner = tooth.Rotate(radians);
gearShape.Add(rotatedCorner);
}
debugData.Add(new Polygons() { outlinePaths });
gearShape = gearShape.Union(gearShape, PolyFillType.pftNonZero);
var gearShape = tooth.wheel.Subtract(outlinePaths);
debugData.Add(gearShape);
gearShape = toothParts.wheel.Subtract(gearShape);
debugData.Add(gearShape);
@ -610,6 +614,7 @@ namespace MatterHackers.MatterControl.DesignTools
var radius = this.CenterHoleDiameter / 2;
var centerhole = Circle(0, 0, radius, 1000);
gearShape = gearShape.Subtract(centerhole);
debugData.Add(gearShape);
}
return gearShape;