public override Color?GetItemColor(TreeMapItem item, TreeMapItemGroupInfo group)
{
if (item.Children.Count == 0)
{
Color itemColor = Palette[group.ItemIndex % Palette.Count];
Color groupColor = Palette[group.GroupIndex % Palette.Count];
double proportion = (item.Value - group.MinValue) /
(group.MaxValue - group.MinValue);
return(new Color {
A = 255,
R = (byte)(proportion * itemColor.R + (1 - proportion) * groupColor.R),
G = (byte)(proportion * itemColor.G + (1 - proportion) * groupColor.G),
B = (byte)(proportion * itemColor.B + (1 - proportion) * groupColor.B)
});
}
else
{
return(Palette[Palette.Count - 1 - group.GroupLevel % Palette.Count]);
}
}
public Color GetItemColor(ITreeMapItem item, TreeMapItemGroupInfo group)
{
if (item.Children.Count == 0)
{
Color itemColor = Palette[group.ItemIndex % Palette.Count];
double itemWeight = (item.Value - group.MinValue) / (group.MaxValue - group.MinValue);
if (Double.IsNaN(itemWeight))
{
itemWeight = 1;
}
return(Color.FromArgb(
(int)(itemWeight * 255),
itemColor.R,
itemColor.G,
itemColor.B
));
}
else
{
return(Palette[Palette.Count - 1 - (group.GroupIndex + group.GroupLevel + group.ItemIndex) % Palette.Count]);
}
}
public override Color?GetItemColor(TreeMapItem item, TreeMapItemGroupInfo group)
{
if (group.GroupLevel == 1)
{
return(Colors.White);
}
if (group.GroupLevel == 2)
{
double delta = group.MaxValue - group.MinValue;
double coef = 1 - (group.MaxValue - item.Value) / delta;
switch (((OlympicMedals)item.Tag).MedalType)
{
case "Gold": return(MixColors(goldColors, coef));
case "Silver": return(MixColors(silverColors, coef));
case "Bronze": return(MixColors(bronzeColors, coef));
default:
break;
}
}
return(null);
}
