static PluggableGuide()
{
#if XBOX
Provider = new RealGuideProvider();
#else
Provider = new WindowsSafeGuideProvider();
#endif
}
public IEnumerable <Guideline> InvalidateSnappedGuidelines(IGuideProvider target)
{
SnapItems.Clear();
foreach (Guideline gl in GetSnappedGuidelines(target))
{
if (gl.SnappedGuideline == null)
{
continue;
}
yield return(gl);
if (!gl.IsVisible)
{
continue;
}
if (gl.IsVertical)
{
SnapItems.Add(
new Guideline(
new Point(
gl.Point1.X,
Math.Min(gl.Point1.Y, gl.SnappedGuideline.Point1.Y)),
new Point(
gl.Point1.X,
Math.Max(gl.Point2.Y, gl.SnappedGuideline.Point2.Y))));
}
else
{
SnapItems.Add(
new Guideline(
new Point(
Math.Min(gl.Point1.X, gl.SnappedGuideline.Point1.X),
gl.Point1.Y),
new Point(
Math.Max(gl.Point2.X, gl.SnappedGuideline.Point2.X),
gl.Point2.Y)));
}
}
this.InvalidateVisual();
}
public IEnumerable <Guideline> GetSnappedGuidelines(IGuideProvider target)
{
foreach (IGuideProvider provider in Items.Except(new[] { target }))
{
if (provider is FrameworkElement frameworkElement &&
!frameworkElement.IsVisible)
{
continue;
}
foreach (Guideline gl in provider.GetGuidableLines()
.Where(gl =>
{
return(target.GetGuidableLines()
.Count(tGl =>
{
double length = Guideline.Distance(gl, tGl);
if (length == -1)
{
return false;
}
if (length <= this.Fit(SnapThreshold))
{
gl.SnappedGuideline = tGl;
return true;
}
return false;
}) > 0);
}).
OrderBy(gl =>
{
return(Guideline.Distance(gl, gl.SnappedGuideline));
}))
{
yield return(gl);
}
}
}
public StandardVelocityProvider()
{
LocalGuiderProvider = new PBestGuideProvider();
NeighbourhoodGuideProvider = new NBestGuideProvider();
}
static PluggableGuide () {
#if XBOX
Provider = new RealGuideProvider();
#else
Provider = new WindowsSafeGuideProvider();
#endif
}
public ExtendedVelocityProvider()
{
LocalGuideProvider = new PBestGuideProvider();
NeighbourhoodGuideProvider = new NBestGuideProvider();
AdditionalGuideProvider = new CenterBasedGuideProvider();
}
public void Remove(IGuideProvider layer)
{
Items.Remove(layer);
}
public void Add(IGuideProvider layer)
{
Items.Add(layer);
}