void ClearCollectedTmpPoints(out double tmp_expectedLen)
{
//clear all previous collected points
int j = _tempPoints.Count;
tmp_expectedLen = 0;
if (j > 0)
{
tmp_expectedLen = _expectedSegmentLen;
for (int i = 0; i < j;)
{
//p0-p1
TmpPoint p0 = _tempPoints[i];
TmpPoint p1 = _tempPoints[i + 1];
//-------------------------------
//a series of connected line
//if ((_nextMarkNo % 2) == 1)
//{
// if (i == 0)
// {
// //move to
// _output.AddMoveTo(p0.x, p0.y);
// }
// _output.AddLineTo(p1.x, p1.y);
//}
if (i == 0)
{
//1st move to
_currentMarker.lineSegDel(_output, VertexCmd.MoveTo, p0.x, p0.y);
}
_currentMarker.lineSegDel(_output, VertexCmd.LineTo, p1.x, p1.y);
//-------------------------------
double len = AggMath.calc_distance(p0.x, p0.y, p1.x, p1.y);
tmp_expectedLen -= len;
i += 2;
_latest_X = p1.x;
_latest_Y = p1.y;
}
//------------
_tempPoints.Clear();
}
//-----------------
}
/// <summary>
/// create polygon from flatten curve outline point
/// </summary>
/// <param name="cnt"></param>
/// <returns></returns>
static Poly2Tri.Polygon CreatePolygon2(GlyphContour cnt)
{
List <Poly2Tri.TriangulationPoint> points = new List <Poly2Tri.TriangulationPoint>();
List <GlyphPart> allParts = cnt.parts;
//---------------------------------------
//merge all generated points
//also remove duplicated point too!
List <GlyphPoint2D> mergedPoints = new List <GlyphPoint2D>();
cnt.mergedPoints = mergedPoints;
//---------------------------------------
{
int tt = 0;
int j = allParts.Count;
for (int i = 0; i < j; ++i)
{
GlyphPart p = allParts[i];
List <GlyphPoint2D> fpoints = p.GetFlattenPoints();
if (tt == 0)
{
int n = fpoints.Count;
for (int m = 0; m < n; ++m)
{
//GlyphPoint2D fp = fpoints[m];
mergedPoints.Add(fpoints[m]);
//allPoints.Add((float)fp.x);
//allPoints.Add((float)fp.y);
}
tt++;
}
else
{
//except first point
int n = fpoints.Count;
for (int m = 1; m < n; ++m)
{
//GlyphPoint2D fp = fpoints[m];
mergedPoints.Add(fpoints[m]);
//allPoints.Add((float)fp.x);
//allPoints.Add((float)fp.y);
}
}
}
}
//---------------------------------------
{
//check last (x,y) and first (x,y)
int lim = mergedPoints.Count - 1;
{
if (mergedPoints[lim].IsEqualValues(mergedPoints[0]))
{
//remove last (x,y)
mergedPoints.RemoveAt(lim);
lim -= 1;
}
}
//limitation: poly tri not accept duplicated points!
double prevX = 0;
double prevY = 0;
Dictionary <TmpPoint, bool> tmpPoints = new Dictionary <TmpPoint, bool>();
lim = mergedPoints.Count;
for (int i = 0; i < lim; ++i)
{
GlyphPoint2D p = mergedPoints[i];
double x = p.x;
double y = p.y;
if (x == prevX && y == prevY)
{
if (i > 0)
{
throw new NotSupportedException();
}
}
else
{
TmpPoint tmp_point = new TmpPoint(x, y);
if (!tmpPoints.ContainsKey(tmp_point))
{
//ensure no duplicated point
tmpPoints.Add(tmp_point, true);
var userTriangulationPoint = new Poly2Tri.TriangulationPoint(x, y)
{
userData = p
};
p.triangulationPoint = userTriangulationPoint;
points.Add(userTriangulationPoint);
}
else
{
throw new NotSupportedException();
}
prevX = x;
prevY = y;
}
}
Poly2Tri.Polygon polygon = new Poly2Tri.Polygon(points.ToArray());
return(polygon);
}
}
