public override Task Rebuild()
{
this.DebugDepth("Rebuild");
bool valuesChanged = false;
var startingAngle = StartingAngle.ClampIfNotCalculated(this, 0, 360 - .01, ref valuesChanged);
var endingAngle = EndingAngle.ClampIfNotCalculated(this, startingAngle + .01, 360, ref valuesChanged);
var sides = Sides.Value(this);
var axisPosition = AxisPosition.Value(this);
if (startingAngle > 0 || endingAngle < 360)
{
Sides = agg_basics.Clamp(sides, 1, 360, ref valuesChanged);
}
else
{
Sides = agg_basics.Clamp(sides, 3, 360, ref valuesChanged);
}
Invalidate(InvalidateType.DisplayValues);
var rebuildLock = RebuildLock();
// now create a long running task to process the image
return(ApplicationController.Instance.Tasks.Execute(
"Revolve".Localize(),
null,
(reporter, cancellationToken) =>
{
var vertexSource = this.VertexSource;
var pathBounds = vertexSource.GetBounds();
vertexSource = vertexSource.Translate(-pathBounds.Left - axisPosition, 0);
Mesh mesh = VertexSourceToMesh.Revolve(vertexSource,
sides,
MathHelper.DegreesToRadians(360 - endingAngle),
MathHelper.DegreesToRadians(360 - startingAngle),
false);
// take the axis offset out
mesh.Transform(Matrix4X4.CreateTranslation(pathBounds.Left + axisPosition, 0, 0));
if (mesh.Vertices.Count == 0)
{
mesh = null;
}
Mesh = mesh;
UiThread.RunOnIdle(() =>
{
rebuildLock.Dispose();
Parent?.Invalidate(new InvalidateArgs(this, InvalidateType.Children));
});
return Task.CompletedTask;
}));
}