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Colormap: Add GetImage() to compliment GetSKBitmap() #4371

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#4467
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Colormap: Add GetImage() to compliment GetSKBitmap()#4371
#4467
@swharden

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@swharden
swharden
opened on Oct 22, 2024

This is present

ScottPlot/src/ScottPlot5/ScottPlot5/Interfaces/IColormap.cs

Lines 23 to 38 in 2e2c9e3

/// <summary>
/// Create a 1 by 256 bitmap displaying all values of a heatmap
/// </summary>
public static SKBitmap GetSKBitmap(this IColormap colormap, bool vertical)
{
uint[] argbs = Enumerable.Range(0, 256)
.Select(i => colormap.GetColor((vertical ? 255 - i : i) / 255f).ARGB)
.ToArray();
int bmpWidth = vertical ? 1 : 256;
int bmpHeight = !vertical ? 1 : 256;
SKBitmap bmp = Drawing.BitmapFromArgbs(argbs, bmpWidth, bmpHeight);
return bmp;
}

However it would be nice to have a similar method that returned a ScottPlot.Image

This may be as simple as a one-liner, because I think an Image can be constructed form a GetSKBitmap

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