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72 lines
3 KiB
C#
72 lines
3 KiB
C#
#region License Information (GPL v3)
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/*
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ShareX - A program that allows you to take screenshots and share any file type
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Copyright (c) 2007-2023 ShareX Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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Optionally you can also view the license at <http://www.gnu.org/licenses/>.
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*/
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#endregion License Information (GPL v3)
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using ShareX.HelpersLib;
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using System.ComponentModel;
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using System.Drawing;
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using System.Drawing.Imaging;
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namespace ShareX.ImageEffectsLib
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{
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[Description("RGB split")]
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internal class RGBSplit : ImageEffect
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{
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[DefaultValue(typeof(Point), "-5, 0")]
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public Point OffsetRed { get; set; } = new Point(-5, 0);
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[DefaultValue(typeof(Point), "0, 0")]
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public Point OffsetGreen { get; set; }
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[DefaultValue(typeof(Point), "5, 0")]
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public Point OffsetBlue { get; set; } = new Point(5, 0);
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public override Bitmap Apply(Bitmap bmp)
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{
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Bitmap bmpResult = bmp.CreateEmptyBitmap();
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using (UnsafeBitmap source = new UnsafeBitmap(bmp, true, ImageLockMode.ReadOnly))
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using (UnsafeBitmap dest = new UnsafeBitmap(bmpResult, true, ImageLockMode.WriteOnly))
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{
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int right = source.Width - 1;
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int bottom = source.Height - 1;
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for (int y = 0; y < source.Height; y++)
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{
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for (int x = 0; x < source.Width; x++)
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{
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ColorBgra colorR = source.GetPixel(MathHelpers.Clamp(x - OffsetRed.X, 0, right), MathHelpers.Clamp(y - OffsetRed.Y, 0, bottom));
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ColorBgra colorG = source.GetPixel(MathHelpers.Clamp(x - OffsetGreen.X, 0, right), MathHelpers.Clamp(y - OffsetGreen.Y, 0, bottom));
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ColorBgra colorB = source.GetPixel(MathHelpers.Clamp(x - OffsetBlue.X, 0, right), MathHelpers.Clamp(y - OffsetBlue.Y, 0, bottom));
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ColorBgra shiftedColor = new ColorBgra((byte)(colorB.Blue * colorB.Alpha / 255), (byte)(colorG.Green * colorG.Alpha / 255),
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(byte)(colorR.Red * colorR.Alpha / 255), (byte)((colorR.Alpha + colorG.Alpha + colorB.Alpha) / 3));
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dest.SetPixel(x, y, shiftedColor);
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}
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}
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}
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return bmpResult;
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}
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}
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} |