SolveResults Compute(string fileLoc, int numColors)
{
var rc = new SolveResults();
Dictionary <Color, int> dictColors = new Dictionary <Color, int>();
Dictionary <Color, List <GH_Point> > dictColorLocation = new Dictionary <Color, List <GH_Point> >();
List <GH_Colour> topCols = new List <GH_Colour>();
List <GH_Integer> colCount = new List <GH_Integer>();
GH_Structure <GH_Point> colLocation = new GH_Structure <GH_Point>();
try
{
using (Bitmap bitmap = new Bitmap(fileLoc))
{
GH_Integer pixCount = new GH_Integer();
GH_Convert.ToGHInteger(bitmap.Height * bitmap.Width, 0, ref pixCount);
rc.PixCount = pixCount;
///https://www.grasshopper3d.com/forum/topics/unsafe?page=1&commentId=2985220%3AComment%3A808291&x=1#2985220Comment808291
GH_MemoryBitmap sampler = new GH_MemoryBitmap(bitmap);
Color col = Color.Transparent;
for (int x = 0; x < bitmap.Width; x++)
{
for (int y = 0; y < bitmap.Height; y++)
{
///GH_MemoryBitmap Sample is faster than GetPixel
//col = bitmap.GetPixel(x, y);
if (sampler.Sample(x, y, ref col))
{
if (!dictColors.ContainsKey(col))
{
dictColors.Add(col, 1);
//dictColorLocation.Add(col, new List<GH_Point> { new GH_Point(new Point3d(x,y,0)) });
}
else
{
dictColors[col]++;
//dictColorLocation[col].Add(new GH_Point(new Point3d(x,y,0)));
}
}
}
}
if (numColors > dictColors.Count || numColors <= 0)
{
numColors = dictColors.Count;
}
var sortedColorDict = (from entry in dictColors orderby entry.Value descending select entry)
.Take(numColors)
.ToDictionary(pair => pair.Key, pair => pair.Value);
//var sortedColorLocation = (from entry in dictColorLocation orderby entry.Value.Count descending select entry)
// .Take(numColors)
// .ToDictionary(pair => pair.Key, pair => pair.Value);
foreach (var clr in sortedColorDict)
{
GH_Colour gh_Col = new GH_Colour();
GH_Convert.ToGHColour(clr.Key, 0, ref gh_Col);
topCols.Add(gh_Col);
GH_Integer gh_Count = new GH_Integer();
GH_Convert.ToGHInteger(clr.Value, 0, ref gh_Count);
colCount.Add(gh_Count);
}
/*int i = 0;
* foreach (var clr in sortedColorLocation)
* {
* GH_Path path = new GH_Path(i);
* colLocation.AppendRange(clr.Value, path);
* i++;
* }
*/
sampler.Release(false);
bitmap.Dispose();
}
}
catch
{
AddRuntimeMessage(GH_RuntimeMessageLevel.Warning, "Could not load image from file path: " + fileLoc);
}
rc.TopColors = topCols;
rc.ColorCount = colCount;
//rc.ColorLocation = colLocation;
return(rc);
}
/*******************************************/
public static bool CastToGoo(object value, ref GH_Colour target)
{
return(GH_Convert.ToGHColour(value, GH_Conversion.Both, ref target));
}
