/// <summary>Sets the envelope from the attribute stream.</summary>
/// <remarks>
/// Sets the envelope from the attribute stream. The attribute stream stores
/// interleaved x and y. The envelope will be set to empty if the pointCount
/// is zero.
/// </remarks>
public void SetEnvelopeFromPoints(int pointCount, com.epl.geometry.Envelope2D inOutEnv)
{
if (pointCount == 0)
{
inOutEnv.SetEmpty();
return;
}
if (pointCount < 0)
{
pointCount = Size() / 2;
}
else
{
if (pointCount * 2 > Size())
{
throw new System.ArgumentException();
}
}
inOutEnv.SetCoords(Read(0), Read(1));
for (int i = 1; i < pointCount; i++)
{
inOutEnv.MergeNE(Read(i * 2), Read(i * 2 + 1));
}
}
internal void StrokeDrawPolyPath(com.epl.geometry.SimpleRasterizer rasterizer, com.epl.geometry.MultiPathImpl polyPath, double tol)
{
com.epl.geometry.Point2D[] fan = new com.epl.geometry.Point2D[4];
for (int i = 0; i < fan.Length; i++)
{
fan[i] = new com.epl.geometry.Point2D();
}
com.epl.geometry.SegmentIteratorImpl segIter = polyPath.QuerySegmentIterator();
double strokeHalfWidth = m_transform.Transform(tol) + 1.5;
double shortSegment = 0.25;
com.epl.geometry.Point2D vec = new com.epl.geometry.Point2D();
com.epl.geometry.Point2D vecA = new com.epl.geometry.Point2D();
com.epl.geometry.Point2D vecB = new com.epl.geometry.Point2D();
com.epl.geometry.Point2D ptStart = new com.epl.geometry.Point2D();
com.epl.geometry.Point2D ptEnd = new com.epl.geometry.Point2D();
com.epl.geometry.Point2D prev_start = new com.epl.geometry.Point2D();
com.epl.geometry.Point2D prev_end = new com.epl.geometry.Point2D();
double[] helper_xy_10_elm = new double[10];
com.epl.geometry.Envelope2D segEnv = new com.epl.geometry.Envelope2D();
com.epl.geometry.Point2D ptOld = new com.epl.geometry.Point2D();
while (segIter.NextPath())
{
bool hasFan = false;
bool first = true;
ptOld.SetCoords(0, 0);
while (segIter.HasNextSegment())
{
com.epl.geometry.Segment seg = segIter.NextSegment();
ptStart.x = seg.GetStartX();
ptStart.y = seg.GetStartY();
ptEnd.x = seg.GetEndX();
ptEnd.y = seg.GetEndY();
segEnv.SetEmpty();
segEnv.Merge(ptStart.x, ptStart.y);
segEnv.MergeNE(ptEnd.x, ptEnd.y);
if (!m_geomEnv.IsIntersectingNE(segEnv))
{
if (hasFan)
{
rasterizer.StartAddingEdges();
rasterizer.AddSegmentStroke(prev_start.x, prev_start.y, prev_end.x, prev_end.y, strokeHalfWidth, false, helper_xy_10_elm);
rasterizer.RenderEdges(com.epl.geometry.SimpleRasterizer.EVEN_ODD);
hasFan = false;
}
first = true;
continue;
}
m_transform.Transform(ptEnd, ptEnd);
if (first)
{
m_transform.Transform(ptStart, ptStart);
ptOld.SetCoords(ptStart);
first = false;
}
else
{
ptStart.SetCoords(ptOld);
}
prev_start.SetCoords(ptStart);
prev_end.SetCoords(ptEnd);
rasterizer.StartAddingEdges();
hasFan = !rasterizer.AddSegmentStroke(prev_start.x, prev_start.y, prev_end.x, prev_end.y, strokeHalfWidth, true, helper_xy_10_elm);
rasterizer.RenderEdges(com.epl.geometry.SimpleRasterizer.EVEN_ODD);
if (!hasFan)
{
ptOld.SetCoords(prev_end);
}
}
if (hasFan)
{
rasterizer.StartAddingEdges();
hasFan = !rasterizer.AddSegmentStroke(prev_start.x, prev_start.y, prev_end.x, prev_end.y, strokeHalfWidth, false, helper_xy_10_elm);
rasterizer.RenderEdges(com.epl.geometry.SimpleRasterizer.EVEN_ODD);
}
}
}