Paletted Fill Issues on Surface with Contours

[ShawnCG]

Here is a behavior that I have not been able to find a good solution for. Take the following modification to the ExampleSimpleSurfaceGrid3D class in the LightningChart demo.

Code: Select all

// dY = 35.0 + 30.0 * Math.Sin(0.01 * (double)(iNodeX * iNodeZ));
dY = 0.25 + 0.1 * Math.Sin(0.01 * (double)(iNodeX * iNodeZ));

Also, change the contour palette to have the following values: 0.2, 0.25, 0.3, 0.35. And set the min value for the contour palette to 0.15.

If the surface is displayed with Fill=Paletted and ContourLineType = None, I get the following (correct) plot:

PalettedSurface_NoContours (800x434).jpg (187.48 KiB) Viewed 8508 times

If I turn contours on by setting ContourLineType to ColorLine or PalettedLine, I get something like the following:

PalettedSurface_WithContours (800x424).jpg (179.74 KiB) Viewed 8508 times

Is this the correct behavior or a bug? I don't understand why the surface fill becomes different due to the contours being displayed.

[ArctionPasi]

Thanks for reporting this. It really is a bug, we just haven't noticed ourselves because we have used larger data values.

There's a workaround: set FastContourZoneHeight = 0. Then palette fill with contour lines work.

We'll fix this in our next maintenance release.

[ShawnCG]

Thanks! Your workaround worked for me.