Clear() public method

Clears the plot and resets all state to the default.
public Clear ( ) : void
return void
PlotSurface2D Class Documentation
Esempio n. 1
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        public Gdk.Pixbuf CreateIcon2D(Table2D table)
        {
            if (table.Ymin == table.Ymax)
            {
                return(GetNoDataPixBuf);
            }

            plotSurface.Clear();
            // needs to be set each time after Clear()
            plotSurface.Padding       = padding;
            plotSurface.SmoothingMode = SmoothingMode;

            float[] valuesY = table.GetValuesYasFloats();

            // y-values, x-values (!)
            LinePlot lp = new LinePlot(valuesY, table.ValuesX);

            lp.Pen = pen;

            plotSurface.Add(lp);

            plotSurface.XAxis1.Hidden = true;
            plotSurface.YAxis1.Hidden = true;

            using (System.Drawing.Graphics g = Graphics.FromImage(bitmap_cache)) {
                plotSurface.Draw(g, bounds);
            }

            if (memoryStream == null)
            {
                memoryStream = new System.IO.MemoryStream(MemoryStreamCapacity);
            }
            memoryStream.Position = 0;
            bitmap_cache.Save(memoryStream, imageFormat);
            memoryStream.Position = 0;
            // TODO create Pixbuf directly from bitmap if possible, avoiding MemoryStream
            return(new Gdk.Pixbuf(memoryStream));
        }