Exemple #1
0
        public int GetIndex(UInt32 input)
        {
            int i        = 0;
            int minDelta = int.MaxValue;
            int index    = 0;

            foreach (UInt32 color in palette)
            {
                int deltaR = Math.Abs(Color32Util.GetR(color) - Color32Util.GetR(input));
                int deltaG = Math.Abs(Color32Util.GetG(color) - Color32Util.GetG(input));
                int deltaB = Math.Abs(Color32Util.GetB(color) - Color32Util.GetB(input));

                int delta = deltaR + deltaG + deltaB;

                if (delta < minDelta)
                {
                    minDelta = delta;
                    index    = i;
                }

                i++;
            }

            return(index);
        }
            public void RecalcCentroid()
            {
                centroid = Vector3.zero;
                foreach (UInt32 color in colors)
                {
                    centroid.x += Color32Util.GetR(color);
                    centroid.y += Color32Util.GetG(color);
                    centroid.z += Color32Util.GetB(color);
                }

                centroid.x = centroid.x / (float)colors.Count;
                centroid.y = centroid.y / (float)colors.Count;
                centroid.z = centroid.z / (float)colors.Count;
            }
            public static float ColorDistance(UInt32 a, UInt32 b)
            {
                Vector3 e1  = new Vector3(Color32Util.GetR(a), Color32Util.GetG(a), Color32Util.GetB(a));
                Vector3 e2  = new Vector3(Color32Util.GetR(b), Color32Util.GetG(b), Color32Util.GetB(b));
                Vector3 rel = e2 - e1;
                Vector3 d1  = new Vector3(2, 3, 4) - e1;
                Vector3 d2  = new Vector3(2, 3, 4) - e2;

                d1.Normalize();
                d2.Normalize();
                double ang    = 2.0 - Math.Abs(Vector3.Dot(d1, d2));
                double length = rel.magnitude;

                return((float)(length * ang));
            }
Exemple #4
0
            public int MiddleDelta(UInt32 color)
            {
                int count = _colors.Count;

                if (count == 0)
                {
                    return(int.MaxValue);
                }
                UInt32 middleColor = _colors[count / 2];

                int deltaR = Math.Abs(Color32Util.GetR(color) - Color32Util.GetR(middleColor));
                int deltaG = Math.Abs(Color32Util.GetG(color) - Color32Util.GetG(middleColor));
                int deltaB = Math.Abs(Color32Util.GetB(color) - Color32Util.GetB(middleColor));

                return(deltaR + deltaG + deltaB);
            }
Exemple #5
0
            public void SortColors(Color32 range)
            {
                byte channel = BiggestChannel(range);

                if (range.r == channel)
                {
                    _colors.Sort((a, b) => Color32Util.GetR(a).CompareTo(Color32Util.GetR(b)));
                }
                else if (range.g == channel)
                {
                    _colors.Sort((a, b) => Color32Util.GetG(a).CompareTo(Color32Util.GetG(b)));
                }
                else
                {
                    _colors.Sort((a, b) => Color32Util.GetB(a).CompareTo(Color32Util.GetB(b)));
                }
            }
Exemple #6
0
        private Texture2D CreatePaletteTexture(List <UInt32> colors, int shades)
        {
            Texture2D palette = new Texture2D(colors.Count, shades);

            palette.filterMode = FilterMode.Point;
            palette.wrapMode   = TextureWrapMode.Clamp;
            Color32[] data = palette.GetPixels32();

            for (int x = 0; x < palette.width; x++)
            {
                for (int y = 0; y < palette.height; y++)
                {
                    data[y * palette.width + x] = Color32Util.FromRGBAUint32(colors[x]);
                }
            }

            palette.SetPixels32(data);
            palette.Apply();

            return(palette);
        }
            public void CalcRange(out Color32 range, out Color32 min, out Color32 max)
            {
                min = new Color32(byte.MaxValue, byte.MaxValue, byte.MaxValue, byte.MaxValue);
                max = new Color32(byte.MinValue, byte.MinValue, byte.MinValue, byte.MinValue);

                foreach (UInt32 c in colors)
                {
                    Color32 color = Color32Util.FromRGBAUint32(c);
                    min.r = Math.Min(color.r, min.r);
                    min.g = Math.Min(color.g, min.g);
                    min.b = Math.Min(color.b, min.b);

                    max.r = Math.Max(color.r, max.r);
                    max.g = Math.Max(color.g, max.g);
                    max.b = Math.Max(color.b, max.b);
                }

                range = new Color32((byte)(max.r - min.r),
                                    (byte)(max.g - min.g),
                                    (byte)(max.b - min.b),
                                    0);
            }
Exemple #8
0
        private Dictionary <UInt32, UInt32> GetHistogram(Color32[] data)
        {
            Dictionary <UInt32, UInt32> histogram = new Dictionary <UInt32, UInt32>();
            int    i;
            UInt32 color;

            for (i = 0; i < data.Length; i++)
            {
                color = data[i].ToRGBAUInt32();
                if (histogram.ContainsKey(color))
                {
                    histogram[color]++;
                }
                else
                {
                    histogram[color] = 0;
                }

                if (i % ProgressUpdateFreq == 0)
                {
                    if (EditorUtility.DisplayCancelableProgressBar("Converting",
                                                                   "Calculating unique colors",
                                                                   (float)i / (float)data.Length))
                    {
                        EditorUtility.ClearProgressBar();
                        return(null);
                    }
                }
            }

            int count = histogram.Count;

            UInt32[] colors = new UInt32[count];
            int[]    hues   = new int[count];
            int[]    sats   = new int[count];
            int[]    vals   = new int[count];
            i = 0;
            foreach (KeyValuePair <UInt32, UInt32> kv in histogram)
            {
                float h, s, v;
                Color.RGBToHSV(Color32Util.FromRGBAUint32(kv.Key),
                               out h, out s, out v);

                colors[i] = kv.Key;
                hues[i]   = (int)(h * 255.0f);
                sats[i]   = (int)(s * 255.0f);
                vals[i]   = (int)(v * 255.0f);
                i++;
            }

            for (i = 0; i < count; i++)
            {
                int hueDelta = 0;
                int satDelta = 0;
                int valDelta = 0;
                color = colors[i];
                int hue = hues[i];
                int sat = sats[i];
                int val = vals[i];
                for (int j = 0; j < count; j++)
                {
                    hueDelta += Math.Abs(hues[j] - hue);
                    satDelta += Math.Abs(sats[j] - sat);
                    valDelta += Math.Abs(vals[j] - val);
                }

                histogram[color] = (UInt32)(hueDelta + valDelta + satDelta);
            }

            return(histogram);
        }