static Msdfgen.Shape CreateMsdfShape(List <GlyphContour> contours)
{
var shape = new Msdfgen.Shape();
int j = contours.Count;
for (int i = 0; i < j; ++i)
{
var cnt = new Msdfgen.Contour();
shape.contours.Add(cnt);
GlyphContour contour = contours[i];
List <GlyphPart> parts = contour.parts;
int m = parts.Count;
for (int n = 0; n < m; ++n)
{
GlyphPart p = parts[n];
switch (p.Kind)
{
default: throw new NotSupportedException();
case GlyphPartKind.Curve3:
{
GlyphCurve3 curve3 = (GlyphCurve3)p;
cnt.AddQuadraticSegment(
curve3.FirstPoint.X, curve3.FirstPoint.Y,
curve3.x1, curve3.y1,
curve3.x2, curve3.y2
);
}
break;
case GlyphPartKind.Curve4:
{
GlyphCurve4 curve4 = (GlyphCurve4)p;
cnt.AddCubicSegment(
curve4.FirstPoint.X, curve4.FirstPoint.Y,
curve4.x1, curve4.y1,
curve4.x2, curve4.y2,
curve4.x3, curve4.y3);
}
break;
case GlyphPartKind.Line:
{
GlyphLine line = (GlyphLine)p;
cnt.AddLine(
line.FirstPoint.X, line.FirstPoint.Y,
line.x1, line.y1);
}
break;
}
}
}
return(shape);
}
static GlyphContour CreateFitContour(GlyphContour contour, float pixelScale, bool x_axis, bool y_axis)
{
GlyphContour newc = new GlyphContour();
List <GlyphPart> parts = contour.parts;
int m = parts.Count;
for (int n = 0; n < m; ++n)
{
GlyphPart p = parts[n];
switch (p.Kind)
{
default: throw new NotSupportedException();
case GlyphPartKind.Curve3:
{
GlyphCurve3 curve3 = (GlyphCurve3)p;
newc.AddPart(new GlyphCurve3(
curve3.FirstPoint.X * pixelScale, curve3.FirstPoint.Y * pixelScale,
curve3.x1 * pixelScale, curve3.y1 * pixelScale,
curve3.x2 * pixelScale, curve3.y2 * pixelScale));
}
break;
case GlyphPartKind.Curve4:
{
GlyphCurve4 curve4 = (GlyphCurve4)p;
newc.AddPart(new GlyphCurve4(
curve4.FirstPoint.X * pixelScale, curve4.FirstPoint.Y * pixelScale,
curve4.x1 * pixelScale, curve4.y1 * pixelScale,
curve4.x2 * pixelScale, curve4.y2 * pixelScale,
curve4.x3 * pixelScale, curve4.y3 * pixelScale
));
}
break;
case GlyphPartKind.Line:
{
GlyphLine line = (GlyphLine)p;
newc.AddPart(new GlyphLine(
line.FirstPoint.X * pixelScale, line.FirstPoint.Y * pixelScale,
line.x1 * pixelScale, line.y1 * pixelScale
));
}
break;
}
}
return(newc);
}
/// <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);
}
}
public void AddPart(GlyphPart part)
{
parts.Add(part);
}