public override Task Rebuild()
{
this.DebugDepth("Rebuild");
var rebuildLocks = this.RebuilLockAll();
return(ApplicationController.Instance.Tasks.Execute(
"Pinch".Localize(),
null,
(reporter, cancellationToken) =>
{
SourceContainer.Visible = true;
RemoveAllButSource();
// remember the current matrix then clear it so the parts will rotate at the original wrapped position
var currentMatrix = Matrix;
Matrix = Matrix4X4.Identity;
var aabb = SourceContainer.GetAxisAlignedBoundingBox();
bool valuesChanged = false;
PinchPercent = agg_basics.Clamp(PinchPercent, 0, 3, ref valuesChanged);
foreach (var sourceItem in SourceContainer.VisibleMeshes())
{
var originalMesh = sourceItem.Mesh;
var transformedMesh = originalMesh.Copy(CancellationToken.None);
var itemMatrix = sourceItem.WorldMatrix(SourceContainer);
var invItemMatrix = itemMatrix.Inverted;
for (int i = 0; i < originalMesh.Vertices.Count; i++)
{
var pos = originalMesh.Vertices[i];
pos = pos.Transform(itemMatrix);
var ratioToApply = PinchPercent / 100.0;
var distFromCenter = pos.X - aabb.Center.X;
var distanceToPinch = distFromCenter * (1 - ratioToApply);
var delta = (aabb.Center.X + distFromCenter * ratioToApply) - pos.X;
// find out how much to pinch based on y position
var amountOfRatio = (pos.Y - aabb.MinXYZ.Y) / aabb.YSize;
var newPos = new Vector3Float(pos.X + delta * amountOfRatio, pos.Y, pos.Z);
transformedMesh.Vertices[i] = newPos.Transform(invItemMatrix);
}
transformedMesh.CalculateNormals();
var newMesh = new Object3D()
{
Mesh = transformedMesh
};
newMesh.CopyWorldProperties(sourceItem, this, Object3DPropertyFlags.All, false);
this.Children.Add(newMesh);
}
// set the matrix back
Matrix = currentMatrix;
SourceContainer.Visible = false;
rebuildLocks.Dispose();
if (valuesChanged)
{
Invalidate(InvalidateType.DisplayValues);
}
Invalidate(InvalidateType.Children);
return Task.CompletedTask;
}));
}
