internal override bool HitTest(StrokeNodeData beginNode, StrokeNodeData endNode, Quad quad, IEnumerable <ContourSegment> hitContour)
{
double num = 0.0;
StrokeNodeData strokeNodeData;
Vector vector;
if (beginNode.IsEmpty || (quad.IsEmpty && endNode.PressureFactor > beginNode.PressureFactor))
{
strokeNodeData = endNode;
StrokeNodeData empty = StrokeNodeData.Empty;
vector = default(Vector);
}
else
{
strokeNodeData = beginNode;
StrokeNodeData empty = endNode;
num = _radius * (double)empty.PressureFactor;
num *= num;
vector = empty.Position - strokeNodeData.Position;
if (!_nodeShapeToCircle.IsIdentity)
{
vector = _nodeShapeToCircle.Transform(vector);
}
}
double num2 = _radius * (double)strokeNodeData.PressureFactor;
num2 *= num2;
bool flag = false;
bool flag2 = true;
foreach (ContourSegment item in hitContour)
{
if (!item.IsArc)
{
Vector vector2 = item.Begin - strokeNodeData.Position;
Vector vector3 = vector2 + item.Vector;
if (!_nodeShapeToCircle.IsIdentity)
{
vector2 = _nodeShapeToCircle.Transform(vector2);
vector3 = _nodeShapeToCircle.Transform(vector3);
}
if (StrokeNodeOperations.GetNearest(vector2, vector3).LengthSquared <= num2)
{
flag = true;
break;
}
if (!quad.IsEmpty && (StrokeNodeOperations.GetNearest(vector2 - vector, vector3 - vector).LengthSquared <= num || StrokeNodeOperations.HitTestQuadSegment(quad, item.Begin, item.End)))
{
flag = true;
break;
}
if (flag2 && StrokeNodeOperations.WhereIsVectorAboutVector(endNode.Position - item.Begin, item.Vector) != HitResult.Right)
{
flag2 = false;
}
}
}
return(flag | flag2);
}
internal StrokeNode(StrokeNodeOperations operations, int index, StrokeNodeData nodeData, StrokeNodeData lastNodeData, bool isLastNode)
{
_operations = operations;
_index = index;
_thisNode = nodeData;
_lastNode = lastNodeData;
_isQuadCached = lastNodeData.IsEmpty;
_connectingQuad = Quad.Empty;
_isLastNode = isLastNode;
}
internal StrokeNodeIterator(StylusPointCollection stylusPoints, StrokeNodeOperations operations, bool usePressure)
{
_stylusPoints = stylusPoints;
if (operations == null)
{
throw new ArgumentNullException("operations");
}
_operations = operations;
_usePressure = usePressure;
}
private static HitResult WhereIsNodeAboutSegment(Vector spine, Vector segBegin, Vector segEnd)
{
HitResult result = HitResult.Right;
Vector vector = segEnd - segBegin;
if (StrokeNodeOperations.WhereIsVectorAboutVector(-segBegin, vector) == HitResult.Left && !DoubleUtil.IsZero(Vector.Determinant(spine, vector)))
{
result = HitResult.Left;
}
return(result);
}
internal override StrokeFIndices CutTest(StrokeNodeData beginNode, StrokeNodeData endNode, Quad quad, Point hitBeginPoint, Point hitEndPoint)
{
Vector vector = beginNode.IsEmpty ? new Vector(0.0, 0.0) : (beginNode.Position - endNode.Position);
Vector vector2 = hitBeginPoint - endNode.Position;
Vector vector3 = hitEndPoint - endNode.Position;
if (!_nodeShapeToCircle.IsIdentity)
{
vector = _nodeShapeToCircle.Transform(vector);
vector2 = _nodeShapeToCircle.Transform(vector2);
vector3 = _nodeShapeToCircle.Transform(vector3);
}
StrokeFIndices empty = StrokeFIndices.Empty;
double num = 0.0;
double num2 = _radius * (double)endNode.PressureFactor;
if (StrokeNodeOperations.GetNearest(vector2, vector3).LengthSquared <= num2 * num2)
{
empty.EndFIndex = StrokeFIndices.AfterLast;
empty.BeginFIndex = (beginNode.IsEmpty ? StrokeFIndices.BeforeFirst : 1.0);
}
if (!beginNode.IsEmpty)
{
num = _radius * (double)beginNode.PressureFactor;
if (StrokeNodeOperations.GetNearest(vector2 - vector, vector3 - vector).LengthSquared <= num * num)
{
empty.BeginFIndex = StrokeFIndices.BeforeFirst;
if (!DoubleUtil.AreClose(empty.EndFIndex, StrokeFIndices.AfterLast))
{
empty.EndFIndex = 0.0;
}
}
}
if (empty.IsFull || quad.IsEmpty || (empty.IsEmpty && !StrokeNodeOperations.HitTestQuadSegment(quad, hitBeginPoint, hitEndPoint)))
{
return(empty);
}
if (!DoubleUtil.AreClose(empty.BeginFIndex, StrokeFIndices.BeforeFirst))
{
empty.BeginFIndex = ClipTest(-vector, num, num2, vector2 - vector, vector3 - vector);
}
if (!DoubleUtil.AreClose(empty.EndFIndex, StrokeFIndices.AfterLast))
{
empty.EndFIndex = 1.0 - ClipTest(vector, num2, num, vector2, vector3);
}
if (IsInvalidCutTestResult(empty))
{
return(StrokeFIndices.Empty);
}
return(empty);
}
internal static StrokeNodeIterator GetIterator(StylusPointCollection stylusPoints, DrawingAttributes drawingAttributes)
{
if (stylusPoints == null)
{
throw new ArgumentNullException("stylusPoints");
}
if (drawingAttributes == null)
{
throw new ArgumentNullException("drawingAttributes");
}
StrokeNodeOperations operations = StrokeNodeOperations.CreateInstance(GetStylusShape(drawingAttributes));
bool usePressure = !drawingAttributes.IgnorePressure;
return(new StrokeNodeIterator(stylusPoints, operations, usePressure));
}
private static double ClipTest(Vector spineVector, double beginRadius, double endRadius, Vector hitBegin, Vector hitEnd)
{
if (DoubleUtil.IsZero(spineVector.X) && DoubleUtil.IsZero(spineVector.Y))
{
Vector nearest = StrokeNodeOperations.GetNearest(hitBegin, hitEnd);
double num = (nearest.X == 0.0) ? Math.Abs(nearest.Y) : ((nearest.Y != 0.0) ? nearest.Length : Math.Abs(nearest.X));
return(StrokeNodeOperations.AdjustFIndex((num - beginRadius) / (endRadius - beginRadius)));
}
if (DoubleUtil.AreClose(hitBegin, hitEnd))
{
return(ClipTest(spineVector, beginRadius, endRadius, hitBegin));
}
Vector vector = hitEnd - hitBegin;
double num2;
if (DoubleUtil.IsZero(Vector.Determinant(spineVector, vector)))
{
num2 = ClipTest(spineVector, beginRadius, endRadius, StrokeNodeOperations.GetNearest(hitBegin, hitEnd));
}
else
{
double projectionFIndex = StrokeNodeOperations.GetProjectionFIndex(hitBegin, hitEnd);
Vector vector2 = hitBegin + vector * projectionFIndex;
if (vector2.LengthSquared < beginRadius * beginRadius)
{
num2 = ClipTest(spineVector, beginRadius, endRadius, (0.0 > projectionFIndex) ? hitBegin : hitEnd);
}
else
{
Vector vector3 = spineVector + StrokeNodeOperations.GetProjection(-spineVector, vector2 - spineVector);
if (DoubleUtil.IsZero(vector3.LengthSquared) || DoubleUtil.IsZero(endRadius - beginRadius + vector3.Length))
{
return(1.0);
}
num2 = (vector2.Length - beginRadius) / (endRadius - beginRadius + vector3.Length);
Vector vector4 = spineVector * num2;
double projectionFIndex2 = StrokeNodeOperations.GetProjectionFIndex(hitBegin - vector4, hitEnd - vector4);
if (!DoubleUtil.IsBetweenZeroAndOne(projectionFIndex2))
{
num2 = ClipTest(spineVector, beginRadius, endRadius, (0.0 > projectionFIndex2) ? hitBegin : hitEnd);
}
}
}
return(StrokeNodeOperations.AdjustFIndex(num2));
}
internal override bool HitTest(StrokeNodeData beginNode, StrokeNodeData endNode, Quad quad, Point hitBeginPoint, Point hitEndPoint)
{
StrokeNodeData strokeNodeData;
StrokeNodeData strokeNodeData2;
if (beginNode.IsEmpty || (quad.IsEmpty && endNode.PressureFactor > beginNode.PressureFactor))
{
strokeNodeData = endNode;
strokeNodeData2 = StrokeNodeData.Empty;
}
else
{
strokeNodeData = beginNode;
strokeNodeData2 = endNode;
}
Vector vector = hitBeginPoint - strokeNodeData.Position;
Vector vector2 = hitEndPoint - strokeNodeData.Position;
if (!_nodeShapeToCircle.IsIdentity)
{
vector = _nodeShapeToCircle.Transform(vector);
vector2 = _nodeShapeToCircle.Transform(vector2);
}
bool result = false;
double num = _radius * (double)strokeNodeData.PressureFactor;
if (StrokeNodeOperations.GetNearest(vector, vector2).LengthSquared <= num * num)
{
result = true;
}
else if (!quad.IsEmpty)
{
Vector vector3 = strokeNodeData2.Position - strokeNodeData.Position;
if (!_nodeShapeToCircle.IsIdentity)
{
vector3 = _nodeShapeToCircle.Transform(vector3);
}
double num2 = _radius * (double)strokeNodeData2.PressureFactor;
if (StrokeNodeOperations.GetNearest(vector - vector3, vector2 - vector3).LengthSquared <= num2 * num2 || StrokeNodeOperations.HitTestQuadSegment(quad, hitBeginPoint, hitEndPoint))
{
result = true;
}
}
return(result);
}
private static double ClipTest(Vector spine, double beginRadius, double endRadius, Vector hit)
{
double num = endRadius - beginRadius;
double num2 = spine.X * spine.X + spine.Y * spine.Y - num * num;
double num3 = -2.0 * (hit.X * spine.X + hit.Y * spine.Y + beginRadius * num);
double num4 = hit.X * hit.X + hit.Y * hit.Y - beginRadius * beginRadius;
if (DoubleUtil.IsZero(num2) || !DoubleUtil.GreaterThanOrClose(num3 * num3, 4.0 * num2 * num4))
{
return(1.0);
}
double num5 = Math.Sqrt(num3 * num3 - 4.0 * num2 * num4);
double num6 = (0.0 - num3 + num5) / (2.0 * num2);
double num7 = (0.0 - num3 - num5) / (2.0 * num2);
double findex = (DoubleUtil.IsBetweenZeroAndOne(num6) && DoubleUtil.IsBetweenZeroAndOne(num6)) ? Math.Min(num6, num7) : (DoubleUtil.IsBetweenZeroAndOne(num6) ? num6 : (DoubleUtil.IsBetweenZeroAndOne(num7) ? num7 : ((num6 > 1.0 && num7 > 1.0) ? 1.0 : ((!(num6 < 0.0) || !(num7 < 0.0)) ? ((Math.Abs(Math.Min(num6, num7) - 0.0) < Math.Abs(Math.Max(num6, num7) - 1.0)) ? 0.0 : 1.0) : 0.0))));
return(StrokeNodeOperations.AdjustFIndex(findex));
}
internal override StrokeFIndices CutTest(StrokeNodeData beginNode, StrokeNodeData endNode, Quad quad, IEnumerable <ContourSegment> hitContour)
{
Vector vector = beginNode.IsEmpty ? new Vector(0.0, 0.0) : (beginNode.Position - endNode.Position);
if (!_nodeShapeToCircle.IsIdentity)
{
vector = _nodeShapeToCircle.Transform(vector);
}
double num = 0.0;
double num2 = 0.0;
double num3 = _radius * (double)endNode.PressureFactor;
double num4 = num3 * num3;
if (!beginNode.IsEmpty)
{
num = _radius * (double)beginNode.PressureFactor;
num2 = num * num;
}
bool flag = true;
StrokeFIndices result = StrokeFIndices.Empty;
foreach (ContourSegment item in hitContour)
{
if (!item.IsArc)
{
Vector vector2 = item.Begin - endNode.Position;
Vector vector3 = vector2 + item.Vector;
if (!_nodeShapeToCircle.IsIdentity)
{
vector2 = _nodeShapeToCircle.Transform(vector2);
vector3 = _nodeShapeToCircle.Transform(vector3);
}
bool flag2 = false;
if (StrokeNodeOperations.GetNearest(vector2, vector3).LengthSquared < num4)
{
flag2 = true;
if (!DoubleUtil.AreClose(result.EndFIndex, StrokeFIndices.AfterLast))
{
result.EndFIndex = StrokeFIndices.AfterLast;
if (beginNode.IsEmpty)
{
result.BeginFIndex = StrokeFIndices.BeforeFirst;
break;
}
if (DoubleUtil.AreClose(result.BeginFIndex, StrokeFIndices.BeforeFirst))
{
break;
}
}
}
if (!beginNode.IsEmpty && (!flag2 || !DoubleUtil.AreClose(result.BeginFIndex, StrokeFIndices.BeforeFirst)) && StrokeNodeOperations.GetNearest(vector2 - vector, vector3 - vector).LengthSquared < num2)
{
flag2 = true;
if (!DoubleUtil.AreClose(result.BeginFIndex, StrokeFIndices.BeforeFirst))
{
result.BeginFIndex = StrokeFIndices.BeforeFirst;
if (DoubleUtil.AreClose(result.EndFIndex, StrokeFIndices.AfterLast))
{
break;
}
}
}
if (beginNode.IsEmpty || (!flag2 && (quad.IsEmpty || !StrokeNodeOperations.HitTestQuadSegment(quad, item.Begin, item.End))))
{
if (flag && StrokeNodeOperations.WhereIsVectorAboutVector(endNode.Position - item.Begin, item.Vector) != HitResult.Right)
{
flag = false;
}
}
else
{
flag = false;
CalculateCutLocations(vector, vector2, vector3, num3, num, ref result);
if (result.IsFull)
{
break;
}
}
}
}
if (!result.IsFull)
{
if (flag)
{
result = StrokeFIndices.Full;
}
else if (DoubleUtil.AreClose(result.EndFIndex, StrokeFIndices.BeforeFirst) && !DoubleUtil.AreClose(result.BeginFIndex, StrokeFIndices.AfterLast))
{
result.EndFIndex = StrokeFIndices.AfterLast;
}
else if (DoubleUtil.AreClose(result.BeginFIndex, StrokeFIndices.AfterLast) && !DoubleUtil.AreClose(result.EndFIndex, StrokeFIndices.BeforeFirst))
{
result.BeginFIndex = StrokeFIndices.BeforeFirst;
}
}
if (IsInvalidCutTestResult(result))
{
return(StrokeFIndices.Empty);
}
return(result);
}
internal StrokeNodeIterator(DrawingAttributes drawingAttributes)
: this(null, StrokeNodeOperations.CreateInstance((drawingAttributes == null) ? null : GetStylusShape(drawingAttributes)), !(drawingAttributes == null) && !drawingAttributes.IgnorePressure)
{
}
internal StrokeNodeIterator(StylusShape nodeShape)
: this(null, StrokeNodeOperations.CreateInstance(nodeShape), false)
{
}