private int CompareByClusterColor(PaletteItem x, PaletteItem y)
{
if (this.clusters == null)
{
return(PaletteSortContext.CompareByTitle(x, y));
}
ClusteringPoint px = this.colorBase;
if (this.clusters.ContainsKey(x.Cluster))
{
px = PaletteSortContext.ToPoint(this.clusters[x.Cluster].Colors);
}
ClusteringPoint py = this.colorBase;
if (this.clusters.ContainsKey(y.Cluster))
{
py = PaletteSortContext.ToPoint(this.clusters[y.Cluster].Colors);
}
double dx = this.colorBase.Distance(px);
double dy = this.colorBase.Distance(py);
int r = dx.CompareTo(dy);
if (r == 0)
{
r = PaletteSortContext.CompareByTitle(x, y);
}
return(r);
}
PaletteSortContext(Color baseColor, SortedDictionary <int, PaletteItem> clusters)
{
this.clusters = clusters;
this.colorBase = PaletteSortContext.ToPoint(new Color[8] {
Color.Black, Color.Black, Color.Black, Color.Black, Color.Black, Color.Black, Color.Black, Color.Black
});
}
private int CompareByPaletteColor(PaletteItem x, PaletteItem y)
{
ClusteringPoint px = PaletteSortContext.ToPoint(x.Colors);
ClusteringPoint py = PaletteSortContext.ToPoint(y.Colors);
double dx = this.colorBase.Distance(px);
double dy = this.colorBase.Distance(py);
int r = dx.CompareTo(dy);
if (r == 0)
{
r = PaletteSortContext.CompareByTitle(x, y);
}
return(r);
}
private static ClusteringPoint ToPoint(Color[] colors)
{
ClusteringPoint cp = new ClusteringPoint(24);
int i = 0;
for (int j = 0; j < colors.Length; j++)
{
LabColor lc = ColorTransform.RgbToLab(colors[j]);
cp[i++] = lc.L;
cp[i++] = lc.A;
cp[i++] = lc.B;
if (i >= cp.Size)
{
break;
}
}
return(cp);
}
public void UpdatePaletteClusters(ClusteringPoint[] clusters, ClusteringPoint[] points)
{
if (clusters == null)
{
return;
}
using (SqlConnection conn = this.GetConnection())
{
SqlCommand cmd = new SqlCommand(@"DELETE FROM PALETTE_COLOR WHERE PALETTE_ID < 0", conn);
cmd.ExecuteNonQuery();
cmd = null;
cmd = new SqlCommand(@"UPDATE PALETTE SET CLUSTER = NULL", conn);
cmd.ExecuteNonQuery();
cmd = null;
for (int i = 0; i < clusters.Length; i++)
{
ClusteringPoint p = clusters[i];
int j = 0;
int order = 0;
while (j < p.Size)
{
int rgb = ColorTransform.LabToRgb(new LabColor(p[j++], p[j++], p[j++])).ToArgb() & 0xffffff;
++order;
cmd = new SqlCommand(@"INSERT INTO [PALETTE_COLOR] ([PALETTE_ID],[ORDER],[RGB]) VALUES
(-" + (i + 1).ToString() + "," + order.ToString() + "," + rgb.ToString() + ")", conn);
cmd.ExecuteNonQuery();
cmd = null;
}
}
for (int i = 0; i < points.Length; i++)
{
int id = points[i].Id;
int cluster = -(points[i].Index + 1);
cmd = new SqlCommand(@"UPDATE PALETTE SET CLUSTER = " + cluster.ToString() + " WHERE ID = " + id.ToString(), conn);
cmd.ExecuteNonQuery();
cmd = null;
}
}
}
