/// <summary/>
public TestObjects(Variation v)
{
this.variation = v;
this.viewport = null;
this.visual = null;
this.content = null;
string ctb = v["ClipToBounds"];
string o = v["Opacity"];
string om = v["OpacityMask"];
string c = v["Clip"];
string t = v["Transform"];
string e = v["Effect"];
string ei = v["EffectInput"];
string em = v["EdgeMode"];
clipToBounds = (ctb == null) ? false : StringConverter.ToBool(ctb);
clip = (c == null) ? null : GeometryFactory.MakeGeometry(c);
opacity = (o == null) ? 1.0 : StringConverter.ToDouble(o);
opacityMask = (om == null) ? null : BrushFactory.MakeBrush(om);
transform = (t == null) ? null : Transform2DFactory.MakeTransform2D(t);
effect = (e == null) ? null : EffectFactory.MakeEffect(e);
effectInput = (ei == null) ? null : EffectInputFactory.MakeEffectInput(ei);
edgeMode = (em == null) ? EdgeMode.Unspecified : (EdgeMode)Enum.Parse(typeof(EdgeMode), em);
// Don't do DPI scaling here. Avalon needs unscaled input.
// We will do the scale in the verification code.
MathEx.RelativeToAbsolute(opacityMask, new Rect(0, 0, v.WindowWidth, v.WindowHeight));
// Can't scale effectInput here because we don't know the rendered bounds yet.
}