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| author | Michael VanOverbeek <[email protected]> | 2017-05-21 12:29:53 +0000 |
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| committer | Michael VanOverbeek <[email protected]> | 2017-05-21 12:29:53 +0000 |
| commit | 76b54853ba726179f9fddb30c6f838991b7aa71a (patch) | |
| tree | 8713f45ce26958659e3f4e507d73ecabebabfe49 /ShiftOS.WinForms/Tools/DitheringEngine.cs | |
| parent | 31cc9148dd23737df16d8456a42d003cd31dd488 (diff) | |
| download | shiftos_thereturn-76b54853ba726179f9fddb30c6f838991b7aa71a.tar.gz shiftos_thereturn-76b54853ba726179f9fddb30c6f838991b7aa71a.tar.bz2 shiftos_thereturn-76b54853ba726179f9fddb30c6f838991b7aa71a.zip | |
Merge a fuckton of shit.
Diffstat (limited to 'ShiftOS.WinForms/Tools/DitheringEngine.cs')
| -rw-r--r-- | ShiftOS.WinForms/Tools/DitheringEngine.cs | 402 |
1 files changed, 0 insertions, 402 deletions
diff --git a/ShiftOS.WinForms/Tools/DitheringEngine.cs b/ShiftOS.WinForms/Tools/DitheringEngine.cs deleted file mode 100644 index 8509a0b..0000000 --- a/ShiftOS.WinForms/Tools/DitheringEngine.cs +++ /dev/null @@ -1,402 +0,0 @@ -/* - * MIT License - * - * Copyright (c) 2017 Michael VanOverbeek and ShiftOS devs - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#define FLOYDSTEINBERG - -using System; -using System.Collections.Generic; -using System.Linq; -using System.Text; -using System.Threading.Tasks; -using System.Drawing; -using System.Threading; -using ShiftOS.Engine; -using System.Runtime.InteropServices; - -namespace ShiftOS.WinForms.Tools -{ - public static class DitheringEngine - { - public static Color GetColor(Color source) - { - if (Shiftorium.UpgradeInstalled("color_depth_24_bits")) - { - return Color.FromArgb(source.R, source.G, source.B); //get rid of the alpha channel. - } - else - { - if (Shiftorium.UpgradeInstalled("color_depth_16_bits")) - { - byte r = (byte)linear(source.R, 0, 0xFF, 0, 0x1F); - byte g = (byte)linear(source.G, 0, 0xFF, 0, 0x3F); - byte b = (byte)linear(source.B, 0, 0xFF, 0, 0x1F); - - return Color.FromArgb(r, g, b); - } - else - { - int gray = (source.R + source.G + source.B) / 3; - - if (Shiftorium.UpgradeInstalled("color_depth_8_bits")) - return Color.FromArgb(gray, gray, gray); - else - { - if (Shiftorium.UpgradeInstalled("color_depth_6_bits")) - { - int gray6 = (int)linear(gray, 0, 0xFF, 0, 0x3F) * 3; - - - - return Color.FromArgb(gray6, gray6, gray6); - } - else - { - if (Shiftorium.UpgradeInstalled("color_depth_4_bits")) - { - int gray4 = (int)linear(linear(gray, 0, 0xFF, 0, 0xF), 0, 0xF, 0, 0xFF) * 0xF; - return Color.FromArgb(gray4, gray4, gray4); - } - else - { - if (Shiftorium.UpgradeInstalled("color_depth_2_bits")) - { - int gray2 = (int)linear(linear(gray, 0, 0xFF, 0, 0x3), 0, 0x3, 0, 0xFF) * 63; - return Color.FromArgb(gray2, gray2, gray2); - } - else { - if (gray >= 127) - { - return Color.Black; - } - else - { - return Color.White; - } - } - } - } - } - } - } - } - - public static void DitherColor(Color source, int width, int height, Action<Image> result) - { - var bmp = new Bitmap(width + 1, height + 1); - var data = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb); - byte[] rgb = new byte[Math.Abs(data.Stride) * data.Height]; - Marshal.Copy(data.Scan0, rgb, 0, rgb.Length); - for (int i = 0; i < rgb.Length - 3; i += 3) - { - rgb[i] = source.R; - rgb[i + 1] = source.G; - rgb[i + 2] = source.B; - } - Marshal.Copy(rgb, 0, data.Scan0, rgb.Length); - bmp.UnlockBits(data); - DitherImage(bmp, result); - - } - - static private double linear(double x, double x0, double x1, double y0, double y1) - { - if ((x1 - x0) == 0) - { - return (y0 + y1) / 2; - } - return y0 + (x - x0) * (y1 - y0) / (x1 - x0); - } - -#if NODITHER - public static void DitherImage(Image source, Action<Image> result) - { - Desktop.InvokeOnWorkerThread(new Action(() => - { - result?.Invoke(source); - })); - } -#endif - -#if BINARIZE - public static void DitherImage(Image source, Action<Image> result) - { - if (source == null) - { - result?.Invoke(source); - return; - } - - - var t = new Thread(new ThreadStart(() => - { - var bmp = new Bitmap(source.Width, source.Height); - var sourceBmp = (Bitmap)source; - int error = 0; - for (int y = 0; y < bmp.Height; y++) - { - for (int x = 0; x < bmp.Width; x++) - { - - Color c = sourceBmp.GetPixel(x, y); - int gray = ((c.R + c.G + c.B) / 3); - if (gray >= 127) - { - error = gray - 255; - bmp.SetPixel(x, y, Color.White); - } - else - { - error = gray; - bmp.SetPixel(x, y, Color.Black); - } - - - } - } - Desktop.InvokeOnWorkerThread(new Action(() => { result?.Invoke(bmp); })); - })); - t.IsBackground = true; - t.Start(); - - } -#endif - -#if DITHER1D - public static void DitherImage(Image source, Action<Image> result) - { - if (source == null) - { - result?.Invoke(source); - return; - } - - - var t = new Thread(new ThreadStart(() => - { - var bmp = new Bitmap(source.Width, source.Height); - var sourceBmp = (Bitmap)source; - int error = 0; - for (int y = 0; y < bmp.Height; y++) - { - for (int x = 0; x < bmp.Width; x++) - { - - Color c = sourceBmp.GetPixel(x, y); - int gray = ((c.R + c.G + c.B) / 3) + error; - if (gray >= 127) - { - error = gray - 255; - bmp.SetPixel(x, y, Color.White); - } - else - { - error = gray; - bmp.SetPixel(x, y, Color.Black); - } - - - } - } - Desktop.InvokeOnWorkerThread(new Action(() => { result?.Invoke(bmp); })); - })); - t.IsBackground = true; - t.Start(); - } -#endif - -#if FLOYDSTEINBERG - public static void DitherImage(Image source, Action<Image> result) - { - if (source == null) - { - result?.Invoke(source); - return; - } - - - var bmp = new Bitmap(source.Width, source.Height); - var sourceBmp = (Bitmap)source; - var sourceLck = sourceBmp.LockBits(new Rectangle(0, 0, sourceBmp.Width, sourceBmp.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb); - var destLck = bmp.LockBits(new Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb); - int error_r = 0; - - - int sourceBytes = Math.Abs(sourceLck.Stride) * sourceLck.Height; - int destBytes = Math.Abs(destLck.Stride) * destLck.Height; - - IntPtr sourcePtr = sourceLck.Scan0; - IntPtr destPtr = destLck.Scan0; - - byte[] destArr = new byte[destBytes]; - byte[] sourceArr = new byte[sourceBytes]; - - byte[] grays = new byte[destBytes]; - - Marshal.Copy(sourcePtr, sourceArr, 0, sourceBytes); - Marshal.Copy(destPtr, destArr, 0, destBytes); - - int width = Math.Abs(destLck.Stride); - int height = destLck.Height; - - bool sixteenBits = Shiftorium.UpgradeInstalled("color_depth_16_bits"); - bool twoBits = Shiftorium.UpgradeInstalled("color_depth_2_bits"); - bool sixBits = Shiftorium.UpgradeInstalled("color_depth_6_bits"); - bool fourBits = Shiftorium.UpgradeInstalled("color_depth_4_bits"); - bool eightBits = Shiftorium.UpgradeInstalled("color_depth_8_bits"); - bool color_depth_floydsteinberg = Shiftorium.UpgradeInstalled("color_depth_floyd-steinberg_dithering"); - bool dithering = Shiftorium.UpgradeInstalled("color_depth_dithering"); - - for (int y = 0; y < (destLck.Height); y++) - { - for (int x = 0; x < (Math.Abs(destLck.Stride)); x += 3) - { - int i = getIndexFromXY(x, y, width); - byte red = sourceArr[i]; - byte green = sourceArr[i + 1]; - byte blue = sourceArr[i + 2]; - - Color oldc = Color.FromArgb(red, green, blue); - Color newc; - - if (sixteenBits) - { - newc = GetColor(oldc); - } - else - { - int gray = ((oldc.R + oldc.G + oldc.B) / 3); - - byte newgray = 0; - - if (dithering && !color_depth_floydsteinberg) - gray += error_r; - - - - if (eightBits) - { - newgray = (byte)gray; - error_r = 0; - } - else if(sixBits) - { - newgray = (byte)(linear(gray, 0, 0xFF, 0, 0x3F) * 3); - error_r = newgray - gray; - } - else if (fourBits) - { - newgray = (byte)(linear(gray, 0, 0xFF, 0, 0xF) * 0xF); - error_r = newgray - gray; - } - else if (twoBits) - { - if (gray >= 191) - newgray = 0xFF; - else if (gray >= 127) - newgray = Color.LightGray.R; - else if (gray >= 64) - newgray = Color.DarkGray.R; - else - newgray = 0x00; - error_r = newgray - gray; - } - else - { - if (gray >= 127) - newgray = 0xFF; - else - newgray = 0x00; - error_r = newgray - gray; - } - newc = Color.FromArgb(newgray, newgray, newgray); - } - - int nextIndex = getIndexFromXY(x + 3, y, width); - int nextRow = getIndexFromXY(x, y + 1, width); - int nextIndexOnNextRow = getIndexFromXY(x + 3, y + 1, width); - int prevIndexOnNextRow = getIndexFromXY(x - 3, y + 1, width); - - grays[i] = newc.R; - grays[i + 1] = newc.G; - grays[i + 2] = newc.B; - - if (dithering) - { - if (color_depth_floydsteinberg) - { - if (x + 3 < width) - { - sourceArr[nextIndex] += (byte)((error_r * 7) / 16); - sourceArr[nextIndex + 1] += (byte)((error_r * 7) / 16); - sourceArr[nextIndex + 2] += (byte)((error_r * 7) / 16); - } - if (y + 1 < height) - { - sourceArr[nextRow] += (byte)((error_r) / 16); - sourceArr[nextRow + 1] += (byte)((error_r) / 16); - sourceArr[nextRow + 2] += (byte)((error_r) / 16); - } - if (x + 3 < width && y + 1 < height) - { - sourceArr[nextIndexOnNextRow] += (byte)((error_r * 3) / 16); - sourceArr[nextIndexOnNextRow + 1] += (byte)((error_r * 3) / 16); - sourceArr[nextIndexOnNextRow + 2] += (byte)((error_r * 3) / 16); - - } - if (x - 3 > 0 && y + 1 < height) - { - sourceArr[prevIndexOnNextRow] += (byte)((error_r * 5) / 16); - sourceArr[prevIndexOnNextRow + 1] += (byte)((error_r * 5) / 16); - sourceArr[prevIndexOnNextRow + 2] += (byte)((error_r * 5) / 16); - - } - } - } - } - } - - for (int i = 0; i < destArr.Length - 3; i++) - { - destArr[i] = grays[i]; - - } - - Marshal.Copy(destArr, 0, destPtr, destBytes); - - - bmp.UnlockBits(destLck); - - - - Desktop.InvokeOnWorkerThread(new Action(() => { result?.Invoke(bmp); })); - - } -#endif - - private static int getIndexFromXY(int x, int y, int width) - { - return (width * y) + x; - } - } -} |
