private void CompileOpenPath(IList <CCVector2> points, IList <float> accumLengths, int offset, int count, Pen outlinePen)
{
if (_strokeType != StrokeType.Outline)
{
InitializeBuffers(count);
}
IList <float> lengths = accumLengths ?? _zeroList;
Buffer <CCVector2> insetBuffer = null;
Buffer <CCVector2> outsetBuffer = null;
if (outlinePen != null && _strokeType != StrokeType.Fill)
{
insetBuffer = Pools <Buffer <CCVector2> > .Obtain();
outsetBuffer = Pools <Buffer <CCVector2> > .Obtain();
int vCount = _positionData != null ? _positionData.Length : _pen.MaximumVertexCount(count);
insetBuffer.EnsureCapacity(vCount);
outsetBuffer.EnsureCapacity(vCount);
}
PenWorkspace ws = Pools <PenWorkspace> .Obtain();
ws.ResetWorkspace(_pen);
ws.PathLength = lengths[offset + count - 1];
int vPrevCount = 0;
int vNextCount = AddStartPoint(0, points[offset + 0], points[offset + 1], ws, insetBuffer);
if (insetBuffer != null)
{
Array.Reverse(insetBuffer.Data, 0, insetBuffer.Index);
}
JoinSample joinSample = new JoinSample(CCVector2.Zero, points[offset + 0], points[offset + 1], 0, lengths[offset + 0], lengths[offset + 1]);
for (int i = 0; i < count - 2; i++)
{
joinSample.Advance(points[offset + i + 2], lengths[offset + i + 2]);
vPrevCount = vNextCount;
vNextCount = AddJoint(i + 1, ref joinSample, ws, insetBuffer, outsetBuffer);
if (_strokeType != StrokeType.Outline)
{
AddSegment(_vertexBufferIndex - vNextCount - vPrevCount, vPrevCount, _jointCCW[i], _vertexBufferIndex - vNextCount, vNextCount, _jointCCW[i + 1]);
}
}
/*for (int i = 0; i < count - 2; i++) {
* int i0 = offset + i;
* int i1 = i0 + 1;
* int i2 = i0 + 2;
*
* vPrevCount = vNextCount;
* vNextCount = AddJoint(i + 1, points[i0], points[i1], points[i2], lengths[i0], lengths[i1], lengths[i2], ws, insetBuffer, outsetBuffer);
* if (_strokeType != StrokeType.Outline)
* AddSegment(_vertexBufferIndex - vNextCount - vPrevCount, vPrevCount, _jointCCW[i], _vertexBufferIndex - vNextCount, vNextCount, _jointCCW[i + 1]);
* }*/
vPrevCount = vNextCount;
vNextCount = AddEndPoint(count - 1, points[offset + count - 2], points[offset + count - 1], ws, insetBuffer);
if (_strokeType != StrokeType.Outline)
{
AddSegment(_vertexBufferIndex - vNextCount - vPrevCount, vPrevCount, _jointCCW[count - 2], _vertexBufferIndex - vNextCount, vNextCount, _jointCCW[count - 1]);
}
if (insetBuffer != null)
{
Array.Reverse(insetBuffer.Data, 0, insetBuffer.Index);
}
Pools <PenWorkspace> .Release(ws);
if (outlinePen != null && _strokeType != StrokeType.Fill)
{
Buffer <CCVector2> mergedBuffer = Pools <Buffer <CCVector2> > .Obtain();
mergedBuffer.EnsureCapacity(insetBuffer.Index + outsetBuffer.Index);
Array.Copy(insetBuffer.Data, 0, mergedBuffer.Data, 0, insetBuffer.Index);
Array.Copy(outsetBuffer.Data, 0, mergedBuffer.Data, insetBuffer.Index, outsetBuffer.Index);
_outlinePaths = new GraphicsPath[] {
new GraphicsPath(outlinePen, mergedBuffer.Data, PathType.Closed, 0, insetBuffer.Index + outsetBuffer.Index),
};
Pools <Buffer <CCVector2> > .Release(mergedBuffer);
Pools <Buffer <CCVector2> > .Release(insetBuffer);
Pools <Buffer <CCVector2> > .Release(outsetBuffer);
}
}
