public void ExportGeometryCase1()
{
PathGeometryBuilder g = new PathGeometryBuilder();
g.BeginPath();
g.MoveTo(50, 140);
g.LineTo(150, 60);
g.LineTo(250, 140);
g.ClosePath();
g.Stroke();
var geometry = g.ToGeometry();
var pathGeometry = geometry as PathGeometry;
Assert.NotNull(pathGeometry);
Assert.Single(pathGeometry.Figures);
var figure = pathGeometry.Figures[0];
Assert.NotNull(figure);
Assert.Equal(figure.StartPoint, new Point(50, 140));
Assert.True(figure.IsClosed);
Assert.False(figure.IsFilled);
var segments = figure.Segments;
Assert.Equal(3, segments.Count);
Assert.IsType <LineSegment>(segments[0]);
var segment0 = segments[0] as LineSegment;
Assert.True(segment0.IsStroked);
Assert.Equal(segment0.Point, new Point(150, 60));
Assert.IsType <LineSegment>(segments[1]);
var segment1 = segments[1] as LineSegment;
Assert.True(segment1.IsStroked);
Assert.Equal(segment1.Point, new Point(250, 140));
Assert.IsType <LineSegment>(segments[2]);
var segment2 = segments[2] as LineSegment;
Assert.True(segment2.IsStroked);
Assert.Equal(segment2.Point, new Point(50, 140));
}
public void ExportGeometryMultipleFigures()
{
PathGeometryBuilder g = new PathGeometryBuilder();
g.BeginPath();
g.MoveTo(50, 140);
g.LineTo(150, 60);
g.LineTo(250, 140);
g.ClosePath();
g.Stroke();
g.BeginPath();
g.Rect(10, 10, 100, 200, false);
g.Stroke();
var geometry = g.ToGeometry();
var pathGeometry = geometry as PathGeometry;
Assert.NotNull(pathGeometry);
Assert.Equal(2, pathGeometry.Figures.Count);
Assert.NotNull(pathGeometry.Figures[0]);
Assert.NotNull(pathGeometry.Figures[1]);
}
public void ShowGlyphAsDirectedContours_Builtin()
{
//load the glyph
Typeface typeFace;
using (var fs = Utility.ReadFile(Utility.FontDir + fontFileName))
{
var reader = new OpenFontReader();
typeFace = reader.Read(fs);
}
Glyph glyph = typeFace.Lookup(character);
Bounds boundingBox = typeFace.Bounds;
short ascender = typeFace.Ascender;
//read polygons and quadratic bezier segments
GlyphLoader.Read(glyph, out var polygons, out var quadraticBezierSegments);
//The actual position of points should apply ascender offset
var offset = new Vector(0, ascender);
//polygons
Geometry polygonGeometry;
{
var d = new PathGeometryBuilder();
d.BeginPath();
foreach (var polygon in polygons)
{
var startPoint = polygon[0] + offset;
d.MoveTo(startPoint);
var previousPoint = startPoint;
foreach (var point in polygon.Skip(1))
{
var p = point + offset;
d.LineTo(p);
//DrawArrow(d, lastPoint, point);
previousPoint = p;
}
d.LineTo(startPoint);
//DrawArrow(d, lastPoint, point);
d.Stroke();
}
polygonGeometry = d.ToGeometry();
}
var polygonPen = new Pen(polygonColor, polygonLineWidth);
//quadratic bezier segments
Geometry quadraticGeometry;
{
var d = new PathGeometryBuilder();
d.BeginPath();
foreach (var qs in quadraticBezierSegments)
{
d.MoveTo(qs.Item1 + offset);
d.QuadraticCurveTo(qs.Item2 + offset, qs.Item3 + offset);
d.Stroke();
}
quadraticGeometry = d.ToGeometry();
}
var quadraticPen = new Pen(quadraticSegmentColor, quadraticLineWidth);
//start points
Geometry startPointGeometry;
{
var d = new PathGeometryBuilder();
for (var i = 0; i < polygons.Count; i++)
{
var polygon = polygons[i];
var startPoint = polygon[0] + offset;
d.Circle(startPoint, 10);
d.Fill();
}
startPointGeometry = d.ToGeometry();
}
var startPointBrush = new Brush(startPointColor);
//create a DrawingVisual to hold geometries
DrawingVisual drawingVisual = new DrawingVisual(0);
//create geometries and save to DrawingVisual's content
DrawingContext drawingContext = drawingVisual.RenderOpen();
drawingContext.DrawGeometry(null, polygonPen, polygonGeometry);
drawingContext.DrawGeometry(null, quadraticPen, quadraticGeometry);
drawingContext.DrawGeometry(startPointBrush, null, startPointGeometry);
drawingContext.Close();
//draw the drawingVisual to image
int width = boundingBox.XMax - boundingBox.XMin, height = boundingBox.YMax - boundingBox.YMin;
Util.DrawDrawingVisualToImage(out var imageBytes, width, height, drawingVisual);
//save and show the image
var path = $"{OutputDir}{Path.DirectorySeparatorChar}{nameof(ShowGlyphAsDirectedContours_Builtin)}_{fontFileName}_{character}.png";
Util.ShowRawPixelsFrom_glReadPixels_NotOpenFolder(imageBytes, width, height, path);
}
public void ShowGlyphAsOverlappingPolygon_Builtin()
{
//load the glyph
Typeface typeFace;
using (var fs = Utility.ReadFile(Utility.FontDir + fontFileName))
{
var reader = new OpenFontReader();
typeFace = reader.Read(fs);
}
Glyph glyph = typeFace.Lookup(character);
Bounds boundingBox = typeFace.Bounds;
short ascender = typeFace.Ascender;
//read polygons and quadratic bezier segments
GlyphLoader.Read(glyph, out var polygons, out var quadraticBezierSegments);
//The actual position of points should apply ascender offset
var offset = new Vector(0, ascender);
//polygons
var polygonBrush = new Brush(Color.Argb(128, 10, 10, 10));
Geometry polygonGeometry;
{
var d = new PathGeometryBuilder();
foreach (var polygon in polygons)
{
if (polygon.Count == 0)
{
continue;
}
d.MoveTo(polygon[0] + offset);
foreach (var point in polygon.Skip(1))
{
d.LineTo(point + offset);
}
d.Fill();
}
polygonGeometry = d.ToGeometry();
}
//polygon points
Geometry pointsGeometry;
{
var d = new PathGeometryBuilder();
foreach (var polygon in polygons)
{
foreach (var point in polygon)
{
d.Circle(point + offset, 5);
d.Fill();
}
}
pointsGeometry = d.ToGeometry();
}
var pointsBrush = new Brush(Color.Argb(200, 0, 0, 0));
//create a DrawingVisual to hold geometries
DrawingVisual drawingVisual = new DrawingVisual(0);
//create geometries and save to DrawingVisual's content
DrawingContext drawingContext = drawingVisual.RenderOpen();
drawingContext.DrawGeometry(pointsBrush, null, pointsGeometry);
drawingContext.DrawGeometry(polygonBrush, null, polygonGeometry);
drawingContext.Close();
//draw the drawingVisual to image
int width = boundingBox.XMax - boundingBox.XMin, height = boundingBox.YMax - boundingBox.YMin;
Util.DrawDrawingVisualToImage(out var imageBytes, width, height, drawingVisual);
//save and show the image
var path = $"{OutputDir}{Path.DirectorySeparatorChar}{nameof(ShowGlyphAsOverlappingPolygon_Builtin)}_{fontFileName}_{character}.png";
Util.ShowRawPixelsFrom_glReadPixels_NotOpenFolder(imageBytes, width, height, path);
}