Beispiel #1
0
        public void DrawPolygon(SvgPolygon svgPolygon, bool ignoreDisplay)
        {
            if (!CanDraw(svgPolygon, ignoreDisplay))
            {
                return;
            }

            _skCanvas.Save();

            var skMatrix = SkiaUtil.GetSKMatrix(svgPolygon.Transforms);

            SetTransform(skMatrix);
            SetClipPath(svgPolygon, _disposable);

            var skPaintOpacity = SetOpacity(svgPolygon, _disposable);

            var skPaintFilter = SetFilter(svgPolygon, _disposable);

            var skPath = SkiaUtil.ToSKPath(svgPolygon.Points, svgPolygon.FillRule, true, _disposable);

            if (skPath != null && !skPath.IsEmpty)
            {
                var skBounds = skPath.Bounds;

                if (SkiaUtil.IsValidFill(svgPolygon))
                {
                    var skPaint = SkiaUtil.GetFillSKPaint(svgPolygon, _skSize, skBounds, _disposable);
                    _skCanvas.DrawPath(skPath, skPaint);
                }

                if (SkiaUtil.IsValidStroke(svgPolygon))
                {
                    var skPaint = SkiaUtil.GetStrokeSKPaint(svgPolygon, _skSize, skBounds, _disposable);
                    _skCanvas.DrawPath(skPath, skPaint);
                }

                DrawMarkers(svgPolygon, skPath);
            }

            if (skPaintFilter != null)
            {
                _skCanvas.Restore();
            }

            if (skPaintOpacity != null)
            {
                _skCanvas.Restore();
            }

            _skCanvas.Restore();
        }
        void DrawGraph(SKCanvas canvas, SKPaint paint, DGraph2 graph, Func <Vector2d, SKPoint> mapF)
        {
            Colorf color = Colorf.Red;

            if (Colors.ContainsKey(graph))
            {
                color = Colors[graph];
            }
            paint.Color = SkiaUtil.Color(color);

            SKPath path = SkiaUtil.ToSKPath(graph, mapF);

            paint.StrokeWidth = 2;
            canvas.DrawPath(path, paint);

            paint.StrokeWidth = 1;
            //paint.Color = SKColors.Black;
            foreach (Vector2d v in graph.Vertices())
            {
                SKPoint c = mapF(v);
                canvas.DrawCircle(c.X, c.Y, 3.0f, paint);
            }
        }
        void DrawPolygon(SKCanvas canvas, SKPaint paint, GeneralPolygon2d poly, Func <Vector2d, SKPoint> mapF)
        {
            Colorf color = Colorf.Red;

            if (Colors.ContainsKey(poly))
            {
                color = Colors[poly];
            }
            paint.Color = SkiaUtil.Color(color);

            SKPath path = SkiaUtil.ToSKPath(poly, mapF);

            paint.StrokeWidth = 2;
            canvas.DrawPath(path, paint);

            //paint.Color = SKColors.Orange;
            paint.StrokeWidth = 1;
            foreach (Vector2d v in poly.AllVerticesItr())
            {
                SKPoint c = mapF(v);
                canvas.DrawCircle(c.X, c.Y, 3.0f, paint);
            }
        }