void _establishTransform()
{
D.assert(this.link != null);
this._lastTransform = null;
if (this.link._leader == null)
{
return;
}
D.assert(this.link.leader.owner == this.owner,
"Linked LeaderLayer anchor is not in the same layer tree as the FollowerLayer.");
D.assert(this.link.leader._lastOffset != null,
"LeaderLayer anchor must come before FollowerLayer in paint order, but the reverse was true.");
HashSet <Layer> ancestors = new HashSet <Layer>();
Layer ancestor = this.parent;
while (ancestor != null)
{
ancestors.Add(ancestor);
ancestor = ancestor.parent;
}
ContainerLayer layer = this.link.leader;
List <ContainerLayer> forwardLayers = new List <ContainerLayer> {
null, layer
};
do
{
layer = layer.parent;
forwardLayers.Add(layer);
} while (!ancestors.Contains(layer));
ancestor = layer;
layer = this;
List <ContainerLayer> inverseLayers = new List <ContainerLayer>();
do
{
layer = layer.parent;
inverseLayers.Add(layer);
} while (layer != ancestor);
Matrix3 forwardTransform = this._collectTransformForLayerChain(forwardLayers);
Matrix3 inverseTransform = this._collectTransformForLayerChain(inverseLayers);
var inverse = Matrix3.I();
var invertible = inverseTransform.invert(inverseTransform);
if (!invertible)
{
return;
}
inverseTransform = inverse;
inverseTransform.preConcat(forwardTransform);
inverseTransform.preTranslate((float)this.linkedOffset.dx, (float)this.linkedOffset.dy);
this._lastTransform = inverseTransform;
}
void _establishTransform()
{
D.assert(this.link != null);
this._lastTransform = null;
if (this.link._leader == null)
{
return;
}
D.assert(this.link.leader.owner == this.owner,
() => "Linked LeaderLayer anchor is not in the same layer tree as the FollowerLayer.");
D.assert(this.link.leader._lastOffset != null,
() => "LeaderLayer anchor must come before FollowerLayer in paint order, but the reverse was true.");
HashSet <Layer> ancestors = new HashSet <Layer>();
Layer ancestor = this.parent;
while (ancestor != null)
{
ancestors.Add(ancestor);
ancestor = ancestor.parent;
}
ContainerLayer layer = this.link.leader;
List <ContainerLayer> forwardLayers = new List <ContainerLayer> {
null, layer
};
do
{
layer = layer.parent;
forwardLayers.Add(layer);
} while (!ancestors.Contains(layer));
ancestor = layer;
layer = this;
List <ContainerLayer> inverseLayers = new List <ContainerLayer> {
layer
};
do
{
layer = layer.parent;
inverseLayers.Add(layer);
} while (layer != ancestor);
Matrix4 forwardTransform = this._collectTransformForLayerChain(forwardLayers);
Matrix4 inverseTransform = this._collectTransformForLayerChain(inverseLayers);
if (inverseTransform.invert() == 0)
{
return;
}
inverseTransform.multiply(forwardTransform);
inverseTransform.translate(this.linkedOffset.dx, this.linkedOffset.dy);
this._lastTransform = inverseTransform;
this._inverseDirty = true;
}