public ColorPalette(float minHeight, float maxHeight)
{
cR = new float[256];
cG = new float[256];
cB = new float[256];
this.minHeight = minHeight;
this.maxHeight = maxHeight;
ColorMode = ColoringType.Monochrome;
ConstructHeightMap();
FillWithSampleValues();
}
/// <summary>
/// A shortcut to apply new coloring type for each of the breaks of the colors scheme.
/// </summary>
/// <param name="ColoringType">New coloring type.</param>
/// \new491 Added in version 4.9.1
public void ApplyColoringType(ColoringType ColoringType)
{
throw new NotImplementedException();
}
/// <summary>
/// Rebuilds color scheme for image layer represented by grid. Grid may be opened directly or using proxy image.
/// </summary>
public static void RebuildGridWithNewColorScheme(Image img, PredefinedColorScheme colors, ColoringType coloringType, int bandIndex, bool allowExternalColorScheme)
{
// generating new scheme
var grid = img.OpenAsGrid();
grid.OpenBand(bandIndex);
var scheme = grid.GenerateColorScheme(tkGridSchemeGeneration.gsgGradient, colors);
scheme.ApplyColoringType(coloringType);
if (img.IsGridProxy)
{
var extents = axMap1.Extents;
// we need to rebuild the proxy layer completely
axMap1.RemoveAllLayers();
// in fact it will be removed in grid.CreateProxy, but let's do it explicitly
if (!grid.RemoveImageProxy())
{
MessageBox.Show("Failed to remove image proxy");
}
else
{
grid.GlobalCallback = callback;
// first approach
grid.OpenBand(bandIndex);
// in fact map.AddLayer will make this call internally; but for understanding sake I add it here
var newProxy = grid.CreateImageProxy(scheme);
if (newProxy == null)
{
MessageBox.Show("Failed to create image proxy");
return;
}
grid.PreferedDisplayMode = tkGridProxyMode.gpmUseProxy;
axMap1.AddLayer(grid, true);
}
axMap1.Extents = extents;
}
else
{
// it's enough to set new color scheme
img.SourceGridBandIndex = bandIndex;
img.CustomColorScheme = scheme;
img.AllowGridRendering = allowExternalColorScheme ? tkGridRendering.grForceForAllFormats : tkGridRendering.grForGridsOnly;
axMap1.Redraw();
}
}
