public override VectorPoint Copy()
{
StraightLinePoint point = new StraightLinePoint(X, Y);
point.Length = Length;
return(point);
}
public override VectorPoint Split(float t,VectorPath path){
// Create the next one:
StraightLinePoint point=new StraightLinePoint(X,Y);
// Get previous:
float previousX=Previous.X;
float previousY=Previous.Y;
// Get deltas:
float dx=X-previousX;
float dy=Y-previousY;
float nX=previousX + (t*dx);
float nY=previousY + (t*dy);
X=nX;
Y=nY;
path.PathNodeCount++;
// Insert after this:
if(Next==null){
path.LatestPathNode=point;
}else{
point.Next=Next;
Next.Previous=point;
}
point.Previous=this;
Next=point;
return point;
}
public StraightLinePoint LineTo(float x, float y)
{
// Create the straight line:
StraightLinePoint newNode = new StraightLinePoint(x, y);
// Add it:
AddPathNode(newNode);
return(newNode);
}
public override VectorPoint DeleteControl(int id, VectorPath path)
{
// Create:
VectorPoint pt = new StraightLinePoint(X, Y);
// Remove this and add in it's place:
ReplaceWith(pt, path);
return(pt);
}
/// <summary>Closes the path quickly and safely.</summary>
public void ClosePathFast()
{
if (CloseNode == null || LatestPathNode == null)
{
return;
}
StraightLinePoint point = LineTo(CloseNode.X, CloseNode.Y);
point.Close = true;
CloseNode.ClosePoint = point;
}
public override VectorPoint Split(float t, VectorPath path)
{
// Create the next one:
StraightLinePoint point = new StraightLinePoint(X, Y);
// Get previous:
float previousX = Previous.X;
float previousY = Previous.Y;
// Get deltas:
float dx = X - previousX;
float dy = Y - previousY;
float nX = previousX + (t * dx);
float nY = previousY + (t * dy);
X = nX;
Y = nY;
path.PathNodeCount++;
// Insert after this:
if (Next == null)
{
path.LatestPathNode = point;
}
else
{
point.Next = Next;
Next.Previous = point;
}
// Update lengths:
point.Length = (1f - t) * Length;
Length = t * Length;
point.Previous = this;
Next = point;
if (IsClose)
{
IsClose = false;
point.IsClose = true;
path.CloseNode.ClosePoint = point;
}
return(point);
}
/// <summary>A full path close.</summary>
public void ClosePath()
{
if (CloseNode == null || LatestPathNode == null)
{
return;
}
if (LatestPathNode.X == CloseNode.X && LatestPathNode.Y == CloseNode.Y)
{
LatestPathNode.IsClose = true;
CloseNode.ClosePoint = LatestPathNode;
}
else
{
StraightLinePoint point = LineTo(CloseNode.X, CloseNode.Y);
point.Close = true;
CloseNode.ClosePoint = point;
}
}
/// <summary>Gets the point at the given t location.
/// Similar to Split but doesn't apply the point to the path.
/// Instead, the following point is added too.</summary>
public override VectorPoint PointAt(float t, bool addNext)
{
// Get previous:
float previousX = Previous.X;
float previousY = Previous.Y;
// Get deltas:
float dx = X - previousX;
float dy = Y - previousY;
float nX = previousX + (t * dx);
float nY = previousY + (t * dy);
// Create the from:
StraightLinePoint from = new StraightLinePoint(nX, nY);
if (addNext)
{
// Create a copy:
StraightLinePoint to = new StraightLinePoint(X, Y);
to.Previous = from;
from.Next = to;
// Update length:
to.Length = (1f - t) * Length;
if (IsClose)
{
to.IsClose = true;
}
}
// Update length:
from.Length = t * Length;
return(from);
}
public override VectorPoint Split(float t, VectorPath path)
{
// Create the next one:
StraightLinePoint point = new StraightLinePoint(X, Y);
// Get previous:
float previousX = Previous.X;
float previousY = Previous.Y;
// Get deltas:
float dx = X - previousX;
float dy = Y - previousY;
float nX = previousX + (t * dx);
float nY = previousY + (t * dy);
X = nX;
Y = nY;
path.PathNodeCount++;
// Insert after this:
if (Next == null)
{
path.LatestPathNode = point;
}
else
{
point.Next = Next;
Next.Previous = point;
}
point.Previous = this;
Next = point;
return(point);
}
//--------------------------------------
/// <summary>Converts this path to straight lines only.
/// Accuracy is the approx average length of each line segment.</summary>
public void ToStraightLines(float accuracy)
{
if (Width == 0f)
{
// Calc lengths etc:
RecalculateBounds();
}
MoveToPoint prevMoveTo = null;
VectorPoint point = FirstPathNode;
while (point != null)
{
// If it's straight/ a MoveTo, skip:
if (point.IsCurve)
{
VectorLine line = point as VectorLine;
// Replace it with n line segments:
int segmentCount = (int)(line.Length / accuracy);
if (segmentCount < 1)
{
segmentCount = 1;
}
// Setup:
float delta = 1f / (float)segmentCount;
float progress = delta;
// Sample it segmentCount times:
VectorPoint previous = point.Previous;
for (int i = 0; i < segmentCount; i++)
{
float x;
float y;
line.SampleAt(progress, out x, out y);
// Create line segment:
StraightLinePoint slp = new StraightLinePoint(x, y);
slp.Previous = previous;
if (previous == null)
{
FirstPathNode = slp;
}
else
{
previous.Next = slp;
}
previous = slp;
progress += delta;
}
// Increase node count:
PathNodeCount += segmentCount - 1;
// Link up after too:
if (point.Next == null)
{
LatestPathNode = previous;
}
else
{
point.Next.Previous = previous;
}
if (point.IsClose)
{
previous.IsClose = true;
if (prevMoveTo != null)
{
prevMoveTo.ClosePoint = previous;
}
}
}
else if (point is MoveToPoint)
{
prevMoveTo = point as MoveToPoint;
}
// Next one:
point = point.Next;
}
// Recalc:
RecalculateBounds();
}
public override VectorPoint Copy(){
StraightLinePoint point=new StraightLinePoint(X,Y);
point.Length=Length;
point.NormalX=NormalX;
point.NormalY=NormalY;
return point;
}