/// <summary>
/// Apply random polygon colors.
/// </summary>
/// <param name="sf">
/// The sf.
/// </param>
private void ApplyRandomPolygonColors(ref Shapefile sf)
{
if (sf.ShapefileType != ShpfileType.SHP_POLYGON && sf.ShapefileType != ShpfileType.SHP_POLYGONM &&
sf.ShapefileType != ShpfileType.SHP_POLYGONZ)
{
// Nothing to do:
return;
}
var scheme = new ColorScheme();
scheme.AddBreak(0.0, ColorToUInt(Color.FromArgb(254, 240, 217), true));
scheme.AddBreak(0.25, ColorToUInt(Color.FromArgb(253, 204, 138), true));
scheme.AddBreak(0.5, ColorToUInt(Color.FromArgb(252, 141, 89), true));
scheme.AddBreak(0.75, ColorToUInt(Color.FromArgb(227, 74, 51), true));
scheme.AddBreak(1.0, ColorToUInt(Color.FromArgb(179, 0, 0), true));
// Set transparency first:
sf.DefaultDrawingOptions.FillTransparency = 125;
// Generate unique random polygon colors:
sf.Categories.GeneratePolygonColors(scheme);
}
public void Add(ColorInterval item)
{
_scheme.AddBreak(item.Value, ColorHelper.ColorToUInt(item.Color));
}