コード例 #1
0
        private void DrawDendrogram(Graphics graphics, DendrogramFormat format)
        {
            var locations = format.LeafLocations.Select(kvp => (kvp.Key + kvp.Value) / 2).ToList();
            var lines     = format.Data.GetLines(locations, RectilinearLines).ToList();
            var pen       = new Pen(Color.Black, 1);
            var maxHeight = lines.Max(line => line.Item4);

            if (maxHeight == 0)
            {
                // TODO: Draw a degenerate tree where all nodes connect at the same point
                return;
            }

            var colorFraction = GetFractionForColors(format);
            var treeFraction  = 1 - colorFraction;

            if (treeFraction > 0)
            {
                var denominator = maxHeight / treeFraction;
                var offset      = denominator - maxHeight;
                foreach (var line in lines)
                {
                    var start = CoordinatesToPoint(line.Item1, (offset + line.Item2) / denominator);
                    var end   = CoordinatesToPoint(line.Item3, (offset + line.Item4) / denominator);
                    DrawLine(graphics, pen, start, end);
                }
            }

            if (colorFraction > 0)
            {
                for (int colorLevel = 0; colorLevel < format.ColorLevelCount; colorLevel++)
                {
                    for (int iLeaf = 0; iLeaf < format.Colors.Count; iLeaf++)
                    {
                        var color = format.Colors[iLeaf][colorLevel];
                        var left  = format.LeafLocations[iLeaf].Key;
                        var right = format.LeafLocations[iLeaf].Value;

                        var bottom      = colorLevel * colorFraction / format.ColorLevelCount;
                        var top         = (colorLevel + 1) * colorFraction / format.ColorLevelCount;
                        var topLeft     = CoordinatesToPoint(left, top);
                        var bottomRight = CoordinatesToPoint(right, bottom);
                        var rectangle   = new RectangleF(
                            Math.Min(topLeft.X, bottomRight.X),
                            Math.Min(topLeft.Y, bottomRight.Y),
                            Math.Abs(topLeft.X - bottomRight.X),
                            Math.Abs(topLeft.Y - bottomRight.Y));

                        graphics.FillRectangle(new SolidBrush(color), rectangle);
                    }
                }
            }
        }
コード例 #2
0
ファイル: DendrogramScale.cs プロジェクト: laeubisoft/pwiz
        private double GetFractionForColors(DendrogramFormat dendrogramFormat)
        {
            if (dendrogramFormat.Colors == null || dendrogramFormat.Colors.Count == 0)
            {
                return(0);
            }

            var totalSpace     = GetTotalSpace();
            var spaceForColors = Math.Max(totalSpace / 10, dendrogramFormat.ColorLevelCount * 5);

            if (spaceForColors >= totalSpace)
            {
                return(1);
            }

            return(spaceForColors / totalSpace);
        }