internal void FillMultiPath(com.epl.geometry.SimpleRasterizer rasterizer, com.epl.geometry.Transformation2D trans, com.epl.geometry.MultiPathImpl polygon, bool isWinding)
{
com.epl.geometry.SegmentIteratorImpl segIter = polygon.QuerySegmentIterator();
com.epl.geometry.Point2D p1 = new com.epl.geometry.Point2D();
com.epl.geometry.Point2D p2 = new com.epl.geometry.Point2D();
while (segIter.NextPath())
{
while (segIter.HasNextSegment())
{
com.epl.geometry.Segment seg = segIter.NextSegment();
if (seg.GetType() != com.epl.geometry.Geometry.Type.Line)
{
throw com.epl.geometry.GeometryException.GeometryInternalError();
}
// TODO:
// densify
// the
// segment
// here
trans.Transform(seg.GetStartXY(), p1);
trans.Transform(seg.GetEndXY(), p2);
m_rasterizer.AddEdge(p1.x, p1.y, p2.x, p2.y);
}
}
m_rasterizer.RenderEdges(isWinding ? com.epl.geometry.SimpleRasterizer.WINDING : com.epl.geometry.SimpleRasterizer.EVEN_ODD);
}
public virtual void SetColor(com.epl.geometry.SimpleRasterizer rasterizer, int color)
{
if (this.m_color != color)
{
rasterizer.Flush();
}
this.m_color = color;
}
internal void FillConvexPolygon(com.epl.geometry.SimpleRasterizer rasterizer, com.epl.geometry.Point2D[] fan, int len)
{
for (int i = 1, n = len; i < n; i++)
{
rasterizer.AddEdge(fan[i - 1].x, fan[i - 1].y, fan[i].x, fan[i].y);
}
rasterizer.AddEdge(fan[len - 1].x, fan[len - 1].y, fan[0].x, fan[0].y);
m_rasterizer.RenderEdges(com.epl.geometry.SimpleRasterizer.EVEN_ODD);
}
internal void Init(com.epl.geometry.MultiVertexGeometryImpl geom, double toleranceXY, int rasterSizeBytes)
{
// _ASSERT(CanUseAccelerator(geom));
m_width = System.Math.Max((int)(System.Math.Sqrt(rasterSizeBytes) * 2 + 0.5), 64);
m_scanLineSize = (m_width * 2 + 31) / 32;
// 2 bits per pixel
m_geomEnv = new com.epl.geometry.Envelope2D();
m_toleranceXY = toleranceXY;
// calculate bitmap size
int size = 0;
int width = m_width;
int scanLineSize = m_scanLineSize;
while (width >= 8)
{
size += width * scanLineSize;
width /= 2;
scanLineSize = (width * 2 + 31) / 32;
}
// allocate the bitmap, that contains the base and the mip-levels
m_bitmap = new int[size];
for (int i = 0; i < size; i++)
{
m_bitmap[i] = 0;
}
m_rasterizer = new com.epl.geometry.SimpleRasterizer();
com.epl.geometry.RasterizedGeometry2DImpl.ScanCallbackImpl callback = new com.epl.geometry.RasterizedGeometry2DImpl.ScanCallbackImpl(this, m_bitmap, m_scanLineSize);
m_callback = callback;
m_rasterizer.Setup(m_width, m_width, callback);
geom.QueryEnvelope2D(m_geomEnv);
if (m_geomEnv.GetWidth() > m_width * m_geomEnv.GetHeight() || m_geomEnv.GetHeight() > m_geomEnv.GetWidth() * m_width)
{
}
// the geometry is thin and the rasterizer is not needed.
m_geomEnv.Inflate(toleranceXY, toleranceXY);
com.epl.geometry.Envelope2D worldEnv = new com.epl.geometry.Envelope2D();
com.epl.geometry.Envelope2D pixEnv = com.epl.geometry.Envelope2D.Construct(1, 1, m_width - 2, m_width - 2);
double minWidth = toleranceXY * pixEnv.GetWidth();
// min width is such
// that the size of
// one pixel is
// equal to the
// tolerance
double minHeight = toleranceXY * pixEnv.GetHeight();
worldEnv.SetCoords(m_geomEnv.GetCenter(), System.Math.Max(minWidth, m_geomEnv.GetWidth()), System.Math.Max(minHeight, m_geomEnv.GetHeight()));
m_stroke_half_widthX_pix = worldEnv.GetWidth() / pixEnv.GetWidth();
m_stroke_half_widthY_pix = worldEnv.GetHeight() / pixEnv.GetHeight();
// The stroke half width. Later it will be inflated to account for
// pixels size.
m_stroke_half_width = m_toleranceXY;
m_transform = new com.epl.geometry.Transformation2D();
m_transform.InitializeFromRect(worldEnv, pixEnv);
// geom to pixels
com.epl.geometry.Transformation2D identityTransform = new com.epl.geometry.Transformation2D();
switch (geom.GetType().Value())
{
case com.epl.geometry.Geometry.GeometryType.MultiPoint:
{
callback.SetColor(m_rasterizer, 2);
FillPoints(m_rasterizer, (com.epl.geometry.MultiPointImpl)geom, m_stroke_half_width);
break;
}
case com.epl.geometry.Geometry.GeometryType.Polyline:
{
callback.SetColor(m_rasterizer, 2);
StrokeDrawPolyPath(m_rasterizer, (com.epl.geometry.MultiPathImpl)geom._getImpl(), m_stroke_half_width);
break;
}
case com.epl.geometry.Geometry.GeometryType.Polygon:
{
bool isWinding = false;
// NOTE: change when winding is supported
callback.SetColor(m_rasterizer, 1);
FillMultiPath(m_rasterizer, m_transform, (com.epl.geometry.MultiPathImpl)geom, isWinding);
callback.SetColor(m_rasterizer, 2);
StrokeDrawPolyPath(m_rasterizer, (com.epl.geometry.MultiPathImpl)geom._getImpl(), m_stroke_half_width);
break;
}
}
m_dx = m_transform.xx;
m_dy = m_transform.yy;
m_x0 = m_transform.xd;
m_y0 = m_transform.yd;
BuildLevels();
}
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);
}
}
}
internal void FillEnvelope(com.epl.geometry.SimpleRasterizer rasterizer, com.epl.geometry.Envelope2D envIn)
{
rasterizer.FillEnvelope(envIn);
}
internal void FillPoints(com.epl.geometry.SimpleRasterizer rasterizer, com.epl.geometry.MultiPointImpl geom, double stroke_half_width)
{
throw com.epl.geometry.GeometryException.GeometryInternalError();
}
