protected void UpdateBounds()
{
GeometryValid = OnCheckGeometry != null?OnCheckGeometry.Invoke(this.geometry) : CheckGeometry();
if (!GeometryValid)
{
Bounds = DefaultBound;
BoundsSphere = DefaultBoundSphere;
}
else
{
if (!HasInstances)
{
Bounds = Geometry.Bound;
BoundsSphere = Geometry.BoundingSphere;
BoundsWithTransform = Bounds.Transform(elementCore.TotalModelMatrix);
BoundsSphereWithTransform = BoundsSphere.TransformBoundingSphere(elementCore.TotalModelMatrix);
}
else
{
var bound = Geometry.Bound.Transform(Instances[0]);
var boundSphere = Geometry.BoundingSphere.TransformBoundingSphere(Instances[0]);
if (Instances.Count > 50)
{
Parallel.Invoke(() =>
{
foreach (var instance in Instances)
{
var b = Geometry.Bound.Transform(instance);
BoundingBox.Merge(ref bound, ref b, out bound);
}
},
() =>
{
foreach (var instance in Instances)
{
var bs = Geometry.BoundingSphere.TransformBoundingSphere(instance);
BoundingSphere.Merge(ref boundSphere, ref bs, out boundSphere);
}
});
}
else
{
foreach (var instance in Instances)
{
var b = Geometry.Bound.Transform(instance);
BoundingBox.Merge(ref bound, ref b, out bound);
var bs = Geometry.BoundingSphere.TransformBoundingSphere(instance);
BoundingSphere.Merge(ref boundSphere, ref bs, out boundSphere);
}
}
Bounds = bound;
BoundsSphere = boundSphere;
BoundsWithTransform = Bounds.Transform(elementCore.TotalModelMatrix);
BoundsSphereWithTransform = BoundsSphere.TransformBoundingSphere(elementCore.TotalModelMatrix);
}
}
}
protected override void OnTransformChanged(DependencyPropertyChangedEventArgs e)
{
base.OnTransformChanged(e);
if (this.geometryInternal != null)
{
BoundsWithTransform = Bounds.Transform(this.modelMatrix);
BoundsSphereWithTransform = BoundsSphere.TransformBoundingSphere(this.modelMatrix);
}
else
{
BoundsWithTransform = Bounds;
BoundsSphereWithTransform = BoundsSphere;
}
}
private void OnGeometryPropertyChangedPrivate(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName.Equals(nameof(Geometry3D.Positions)))
{
UpdateBounds();
}
else if (e.PropertyName.Equals(nameof(Geometry3D.Bound)))
{
Bounds = Geometry.Bound;
BoundsWithTransform = Bounds.Transform(elementCore.TotalModelMatrix);
}
else if (e.PropertyName.Equals(nameof(Geometry3D.BoundingSphere)))
{
BoundsSphere = Geometry.BoundingSphere;
BoundsSphereWithTransform = BoundsSphere.TransformBoundingSphere(elementCore.TotalModelMatrix);
}
if (GeometryValid)
{
OnGeometryPropertyChanged(sender, e);
}
}
private void OnTransformChanged(object sender, TransformArgs e)
{
BoundsWithTransform = Bounds.Transform(e);
BoundsSphereWithTransform = BoundsSphere.TransformBoundingSphere(e);
}
