protected override void OnDrag(MouseDevice mouseDevice, double zoom)
{
if (this.IsActive)
{
PathGeometryEditor pathGeometryEditor = this.BeginEditing();
PathFigureEditor pathFigureEditor = new PathFigureEditor(this.PathEditContext.GetPathFigure(this.Path));
int figureIndex = this.PathEditContext.FigureIndex;
int partIndex = this.PathEditContext.PartIndex;
int ofUpstreamSegment = pathFigureEditor.GetFirstIndexOfUpstreamSegment(partIndex);
if (!this.hasDragged)
{
Point point1 = pathFigureEditor.GetPoint(ofUpstreamSegment);
Point point2 = pathFigureEditor.GetPoint(partIndex);
if (VectorUtilities.ArePathPointsVeryClose(point2, pathFigureEditor.GetPoint(ofUpstreamSegment + 2)) && VectorUtilities.ArePathPointsVeryClose(point1, pathFigureEditor.GetPoint(ofUpstreamSegment + 1)))
{
pathGeometryEditor.SetPoint(figureIndex, ofUpstreamSegment + 1, VectorUtilities.WeightedAverage(point1, point2, 1.0 / 3.0));
pathGeometryEditor.SetPoint(figureIndex, ofUpstreamSegment + 2, VectorUtilities.WeightedAverage(point1, point2, 2.0 / 3.0));
this.initialFirstCubicHandle = pathFigureEditor.GetPoint(ofUpstreamSegment + 1);
this.initialSecondCubicHandle = pathFigureEditor.GetPoint(ofUpstreamSegment + 2);
}
this.hasDragged = true;
}
Vector correspondingVector = ElementUtilities.GetCorrespondingVector((this.GetPointInViewRootCoordinates(mouseDevice, false) - this.initialPointerPosition) * this.damping, this.geometryToDocument, this.IsShiftDown ? this.AxisConstraint : (AxisConstraint)null);
Vector vector1 = correspondingVector * this.firstHandleCoef;
Vector vector2 = correspondingVector * this.secondHandleCoef;
pathGeometryEditor.SetPoint(figureIndex, ofUpstreamSegment + 1, this.initialFirstCubicHandle + vector1);
pathGeometryEditor.SetPoint(figureIndex, ofUpstreamSegment + 2, this.initialSecondCubicHandle + vector2);
}
base.OnDrag(mouseDevice, zoom);
}
private void SetupCollinearHandlesConstraint(int index, bool enforceConstraint)
{
PathFigureEditor pathFigureEditor = new PathFigureEditor(this.figure);
if (!pathFigureEditor.HasDownstreamBezierHandleNeighbor(index) || !pathFigureEditor.HasUpstreamBezierHandleNeighbor(index))
{
return;
}
Point point = pathFigureEditor.GetPoint(index);
Vector a = pathFigureEditor.GetPoint(index - 1) - point;
Vector b = pathFigureEditor.GetPoint(index + 1) - point;
if (!enforceConstraint || VectorUtilities.HaveOppositeDirections(a, b))
{
return;
}
double length1 = a.Length;
double length2 = b.Length;
if (length1 > length2)
{
a.Normalize();
b = -a * length2;
pathFigureEditor.SetPoint(index + 1, point + b);
}
else
{
b.Normalize();
Vector vector = -b * length1;
pathFigureEditor.SetPoint(index - 1, point - vector);
}
}
private bool ShouldEnforceSmoothness(PathTangentAdorner pathTangentAdorner)
{
int partIndex = pathTangentAdorner.PartIndex;
PathEditContext pathEditContext = new PathEditContext(pathTangentAdorner.FigureIndex, partIndex);
PathFigureEditor pathFigureEditor = new PathFigureEditor(pathEditContext.GetPathFigure(this.pathEditorTarget.PathGeometry));
Point point1 = pathFigureEditor.GetPoint(pathEditContext.PartIndex);
bool flag = false;
if (pathFigureEditor.IsFirstCubicBezierHandle(partIndex))
{
if (pathFigureEditor.GetPointKind(partIndex - 1) == PathPointKind.Cubic)
{
Point point2 = pathFigureEditor.GetPoint(partIndex - 1);
Point point3 = pathFigureEditor.GetPoint(partIndex - 2);
flag = VectorUtilities.HaveOppositeDirections(point1 - point2, point3 - point2);
}
}
else if (pathFigureEditor.IsIndexValid(partIndex + 4) && pathFigureEditor.GetPointKind(partIndex + 4) == PathPointKind.Cubic)
{
Point point2 = pathFigureEditor.GetPoint(partIndex + 1);
Point point3 = pathFigureEditor.GetPoint(partIndex + 2);
flag = VectorUtilities.HaveOppositeDirections(point1 - point2, point3 - point2);
}
return(flag);
}
protected override void OnDrag(MouseDevice mouseDevice, double zoom)
{
this.currentTangentPoint = this.GetPointInViewRootCoordinates(mouseDevice, true);
Vector correspondingVector = ElementUtilities.GetCorrespondingVector(this.currentTangentPoint - this.currentNodePoint, this.geometryToDocument, this.IsShiftDown ? this.AxisConstraint : (AxisConstraint)null);
Vector lastTangent = this.LastTangent;
this.LastTangent = correspondingVector;
PathFigure pathFigure = this.PathEditContext.GetPathFigure(this.Path);
PathFigureEditor pathFigureEditor = pathFigure == null ? (PathFigureEditor)null : new PathFigureEditor(pathFigure);
if (pathFigureEditor != null && !PathFigureUtilities.IsIsolatedPoint(pathFigureEditor.PathFigure))
{
PathGeometryEditor pathGeometryEditor = this.BeginEditing();
bool flag = PathFigureUtilities.IsClosed(pathFigureEditor.PathFigure);
int index = PathFigureUtilities.PointCount(pathFigureEditor.PathFigure) - (flag ? 0 : 1);
Point point1 = pathFigureEditor.GetPoint(index - 1);
Point point2 = pathFigureEditor.GetPoint(index);
if (pathFigureEditor.GetPointKind(index) == PathPointKind.Line)
{
pathGeometryEditor.RemoveLastSegmentOfFigure(this.PathEditContext.FigureIndex);
if (flag)
{
pathGeometryEditor.CloseFigureWithCubicBezier(point1, point2, this.PathEditContext.FigureIndex);
}
else
{
pathGeometryEditor.AppendCubicBezier(point1, point2, point2, this.PathEditContext.FigureIndex);
}
pathFigureEditor = new PathFigureEditor(this.PathEditContext.GetPathFigure(this.Path));
}
if (!this.IsAltDown)
{
if (!this.areTangentsSymmetric)
{
double length = this.LastTangent.Length;
if (length > 0.0)
{
int num1 = PathFigureUtilities.PointCount(pathFigureEditor.PathFigure);
double num2 = (pathFigureEditor.GetPoint(num1 - 1) - pathFigureEditor.GetPoint(num1 - 2)).Length / length;
pathGeometryEditor.SetPoint(this.PathEditContext.FigureIndex, num1 - 2, point2 - num2 * this.LastTangent);
}
}
else
{
int pointIndex = PathFigureUtilities.PointCount(pathFigureEditor.PathFigure) - (PathFigureUtilities.IsClosed(pathFigureEditor.PathFigure) ? 1 : 2);
pathGeometryEditor.SetPoint(this.PathEditContext.FigureIndex, pointIndex, point2 - this.LastTangent);
}
}
if (PathFigureUtilities.IsClosed(pathFigureEditor.PathFigure) && pathFigureEditor.GetPointKind(3) == PathPointKind.Cubic && this.areTangentsSymmetric)
{
pathGeometryEditor.SetPoint(this.PathEditContext.FigureIndex, 1, point2 + this.LastTangent);
}
this.PathEditorTarget.AddCriticalEdit();
}
base.OnDrag(mouseDevice, zoom);
}
protected override void DoDelete(PathEditContext pathEditContext)
{
PathFigure pathFigure = pathEditContext.GetPathFigure(this.Path);
PathFigureEditor pathFigureEditor = new PathFigureEditor(pathFigure);
int index1 = PathFigureUtilities.PointCount(pathFigure) - (PathFigureUtilities.IsClosed(pathFigure) ? 0 : 1);
if (pathFigureEditor.GetPointKind(index1) == PathPointKind.Cubic)
{
int index2 = index1 - 3;
this.LastTangent = pathFigureEditor.GetPoint(index2 + 1) - pathFigureEditor.GetPoint(index2);
}
this.BeginEditing().RemoveLastSegmentOfFigure(pathEditContext.FigureIndex);
}
protected override void OnBegin(PathEditContext pathEditContext, MouseDevice mouseDevice)
{
this.View.ViewModel.PathPartSelectionSet.SetSelection((PathPart) new PathPoint((SceneElement)this.PathEditorTarget.EditingElement, this.PathEditorTarget.PathEditMode, pathEditContext.FigureIndex, pathEditContext.PartIndex));
this.geometryToDocument = this.EditingElementTransformToRoot;
int figureIndex = pathEditContext.FigureIndex;
int num = pathEditContext.PartIndex;
PathFigureEditor pathFigureEditor = new PathFigureEditor(pathEditContext.GetPathFigure(this.Path));
Point point = pathFigureEditor.GetPoint(num);
int downstreamSegment = pathFigureEditor.GetLastIndexOfDownstreamSegment(num);
if (pathFigureEditor.GetPointKind(num) != PathPointKind.Cubic && pathFigureEditor.GetPointKind(num) != PathPointKind.Start || pathFigureEditor.GetPointKind(downstreamSegment) != PathPointKind.Cubic)
{
PathGeometryEditor pathGeometryEditor = this.BeginEditing();
num = this.PromoteAdjacentSegments(pathEditContext);
pathFigureEditor = new PathFigureEditor(pathGeometryEditor.PathGeometry.Figures[figureIndex]);
this.PathEditContext = new PathEditContext(figureIndex, num);
this.View.ViewModel.PathPartSelectionSet.SetSelection((PathPart) new PathPoint((SceneElement)this.PathEditorTarget.EditingElement, this.PathEditorTarget.PathEditMode, this.PathEditContext.FigureIndex, this.PathEditContext.PartIndex));
}
if (this.zeroTangents)
{
if ((num > 0 || PathFigureUtilities.IsClosed(pathFigureEditor.PathFigure)) && !VectorUtilities.ArePathPointsVeryClose(pathFigureEditor.GetPoint(num), pathFigureEditor.GetPoint(num - 1)))
{
this.BeginEditing().SetPoint(figureIndex, num - 1, point);
}
if (pathFigureEditor.GetLastIndexOfDownstreamSegment(num) != num && !VectorUtilities.ArePathPointsVeryClose(pathFigureEditor.GetPoint(num), pathFigureEditor.GetPoint(num + 1)))
{
this.BeginEditing().SetPoint(figureIndex, num + 1, point);
}
if (num == PathFigureUtilities.PointCount(pathFigureEditor.PathFigure) - 1 && PathFigureUtilities.IsOpen(pathFigureEditor.PathFigure))
{
this.LastTangent = new Vector(0.0, 0.0);
}
}
base.OnBegin(pathEditContext, mouseDevice);
}
protected override void OnEnd()
{
if (!this.hasDragged)
{
PathFigureEditor pathFigureEditor = new PathFigureEditor(this.PathEditContext.GetPathFigure(this.Path));
int partIndex = this.PathEditContext.PartIndex;
int ofUpstreamSegment = pathFigureEditor.GetFirstIndexOfUpstreamSegment(partIndex);
if (!VectorUtilities.ArePathPointsVeryClose(pathFigureEditor.GetPoint(ofUpstreamSegment), pathFigureEditor.GetPoint(ofUpstreamSegment + 1)) || !VectorUtilities.ArePathPointsVeryClose(pathFigureEditor.GetPoint(partIndex), pathFigureEditor.GetPoint(ofUpstreamSegment + 2)))
{
PathGeometryEditor pathGeometryEditor = this.BeginEditing();
pathGeometryEditor.SetPoint(this.PathEditContext.FigureIndex, ofUpstreamSegment + 2, pathFigureEditor.GetPoint(partIndex));
pathGeometryEditor.SetPoint(this.PathEditContext.FigureIndex, ofUpstreamSegment + 1, pathFigureEditor.GetPoint(ofUpstreamSegment));
}
}
base.OnEnd();
}
protected override void OnBegin(PathEditContext pathEditContext, MouseDevice mouseDevice)
{
BaseFrameworkElement frameworkElement = this.oldPathEditorTarget.EditingElement.GetCommonAncestor((SceneNode)this.EditingElement) as BaseFrameworkElement;
Base2DElement editingElement = this.oldPathEditorTarget.EditingElement;
Base2DElement base2Delement = (Base2DElement)this.EditingElement;
if (frameworkElement != base2Delement && !base2Delement.GetComputedTransformToElement((SceneElement)frameworkElement).HasInverse)
{
this.End();
}
else
{
int figureIndex1 = pathEditContext.FigureIndex;
int num1 = PathFigureUtilities.PointCount(this.oldPathEditContext.GetPathFigure(this.oldPathEditorTarget.PathGeometry));
if (editingElement != base2Delement)
{
this.PathEditorTarget.EndEditing(false);
figureIndex1 += this.oldPathEditorTarget.PathGeometry.Figures.Count;
List <PathElement> otherElements = new List <PathElement>();
PathElement mainElement = (PathElement)editingElement;
PathElement pathElement = (PathElement)base2Delement;
otherElements.Add(pathElement);
PathCommandHelper.MakeCompoundPath(mainElement, otherElements, this.EditTransaction);
this.UpdateEditTransaction();
this.PathEditorTarget = this.oldPathEditorTarget;
}
this.PathEditorTarget.BeginEditing();
PathGeometryEditor geometryEditor = this.PathEditorTarget.CreateGeometryEditor();
if (pathEditContext.PartIndex != 0)
{
geometryEditor.CreatePathFigureEditor(figureIndex1).Reverse();
}
geometryEditor.JoinFigure(this.oldPathEditContext.FigureIndex, figureIndex1);
int figureIndex2 = this.oldPathEditContext.FigureIndex;
if (pathEditContext.FigureIndex < this.oldPathEditContext.FigureIndex && editingElement == base2Delement)
{
--figureIndex2;
}
this.UpdateEditTransaction();
this.View.UpdateLayout();
PathFigureEditor pathFigureEditor = geometryEditor.CreatePathFigureEditor(figureIndex2);
int downstreamSegment1 = pathFigureEditor.GetLastIndexOfDownstreamSegment(num1 - 1);
if (pathFigureEditor.GetPointKind(downstreamSegment1) == PathPointKind.Cubic)
{
Vector lastTangent = this.oldPathEditorTarget.LastTangent;
pathFigureEditor.SetPoint(downstreamSegment1 - 2, pathFigureEditor.GetPoint(downstreamSegment1 - 2) + lastTangent);
}
this.PathEditorTarget.EndEditing(false);
int downstreamSegment2 = pathFigureEditor.GetLastIndexOfDownstreamSegment(num1 - 1);
this.PathEditContext = new PathEditContext(figureIndex2, downstreamSegment2);
int num2 = PathFigureUtilities.PointCount(pathFigureEditor.PathFigure);
if (pathFigureEditor.GetPointKind(num2 - 1) == PathPointKind.Cubic)
{
this.LastTangent = pathFigureEditor.GetPoint(num2 - 1) - pathFigureEditor.GetPoint(num2 - 2);
}
else
{
this.LastTangent = new Vector(0.0, 0.0);
}
this.UpdateEditTransaction();
this.zeroTangents = false;
this.PathEditorTarget.BeginEditing();
base.OnBegin(this.PathEditContext, mouseDevice);
}
}
internal static void TranslateSelection(PathEditorTarget pathEditorTarget, ICollection <PathPart> pathParts, Vector offset)
{
List <BitArray> list = new List <BitArray>(pathEditorTarget.PathGeometry.Figures.Count);
for (int index = 0; index < pathEditorTarget.PathGeometry.Figures.Count; ++index)
{
list.Add(new BitArray(PathFigureUtilities.PointCount(pathEditorTarget.PathGeometry.Figures[index]), false));
}
foreach (PathPart pathPart in (IEnumerable <PathPart>)pathParts)
{
PathPoint pathPoint = pathPart as PathPoint;
if ((PathPart)pathPoint != (PathPart)null)
{
if (pathPoint.PartIndex < list[pathPoint.FigureIndex].Count)
{
list[pathPoint.FigureIndex][pathPoint.PartIndex] = true;
}
}
else
{
PathSegment pathSegment = pathPart as PathSegment;
if ((PathPart)pathSegment != (PathPart)null)
{
list[pathSegment.FigureIndex][pathSegment.PartIndex] = true;
PathFigure pathFigure = pathEditorTarget.PathGeometry.Figures[pathPart.FigureIndex];
if (pathFigure.IsClosed && pathPart.PartIndex == 0)
{
int num1 = PathFigureUtilities.PointCount(pathFigure);
int num2 = 1;
if (PathFigureUtilities.IsCloseSegmentDegenerate(pathFigure))
{
num2 = PathSegmentUtilities.GetPointCount(pathFigure.Segments[pathFigure.Segments.Count - 1]);
}
list[pathSegment.FigureIndex][num1 - num2] = true;
}
else
{
int segmentIndex;
int segmentPointIndex;
PathFigureUtilities.GetSegmentFromPointIndex(pathFigure, pathPart.PartIndex, out segmentIndex, out segmentPointIndex);
int pointCount = PathSegmentUtilities.GetPointCount(pathFigure.Segments[segmentIndex]);
int index = pathSegment.PartIndex - pointCount;
if (index >= 0)
{
list[pathSegment.FigureIndex][index] = true;
}
}
}
}
}
for (int figureIndex = 0; figureIndex < pathEditorTarget.PathGeometry.Figures.Count; ++figureIndex)
{
BitArray bitArray = list[figureIndex];
PathFigureEditor pathFigureEditor = new PathFigureEditor(pathEditorTarget.PathGeometry.Figures[figureIndex], pathEditorTarget.PathDiffChangeList, figureIndex);
int num = PathFigureUtilities.PointCount(pathFigureEditor.PathFigure);
for (int index = 0; index < num; ++index)
{
if (bitArray[index])
{
pathFigureEditor.MovePoint(index, offset + pathFigureEditor.GetPoint(index));
}
}
}
}
private Point GetPoint(PathFigureEditor pathFigureEditor, int relativeIndex)
{
return(pathFigureEditor.GetPoint(this.SegmentIndex, this.SegmentPointIndex + relativeIndex) * this.PathGeometryTransformMatrix);
}