122 lines
3.6 KiB
C#
122 lines
3.6 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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using SkiaSharp;
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using UnityEngine;
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namespace BITKit.UX
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{
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public static class SkiaExtensions
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{
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public static Texture2D ToTexture2D(this SKImageInfo info,SKSurface surface)
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{
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// Okay, we're finished drawing. Now we create a Unity texture.
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TextureFormat format = (info.ColorType == SKColorType.Rgba8888) ? TextureFormat.RGBA32 : TextureFormat.BGRA32;
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var texture = new Texture2D(info.Width, info.Height, format, false, true);
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texture.wrapMode = TextureWrapMode.Clamp;
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// Pull a Skia image object out of the canvas...
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var pixmap = surface.PeekPixels();
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// Copy it to the Unity texture...
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texture.LoadRawTextureData(pixmap.GetPixels(), pixmap.RowBytes * pixmap.Height);
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texture.Apply(false, true);
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// And drop it into the RawImage object.
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return texture;
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}
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public static SKColor ToSKColor(this Color color,byte? alpha=null)
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{
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return new SKColor((byte)(color.r * 255), (byte)(color.g * 255), (byte)(color.b * 255), alpha??(byte)(color.a * 255));
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}
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public static SKColor ToSKColor(this Color32 color)
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{
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return new SKColor(color.r, color.g, color.b, color.a);
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}
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public static byte[] GetBytes(this SKSurface self)
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{
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try
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{
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using var image = self.Snapshot();
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using var data = image.Encode(SKEncodedImageFormat.Png, 40);
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//using var stream = File.OpenWrite(exportPath.Value);
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var ms = new MemoryStream();
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// save the data to a stream
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data.SaveTo(ms);
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var bytes = ms.ToArray();
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var bitmap = OnFlipHorizontalClicked(bytes);
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using var rotatedData = bitmap.Encode(SKEncodedImageFormat.Png, 40);
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using var newMs = new MemoryStream();
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rotatedData.SaveTo(newMs);
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return newMs.ToArray();
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}
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catch (Exception e)
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{
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StringBuilder exceptionBuilder = new();
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exceptionBuilder.AppendLine($"Surface:{self is not null}");
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BIT4Log.LogException( new InGameException(exceptionBuilder.ToString(),e));
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throw;
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}
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}
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public static string GetBase64(this SKSurface self)
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{
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try
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{
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var base64 = Convert.ToBase64String(self.GetBytes());
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return "data:image/png;base64," + base64;
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}
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catch (Exception e)
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{
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StringBuilder exceptionBuilder = new();
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exceptionBuilder.AppendLine($"Surface:{self is not null}");
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BIT4Log.LogException( new InGameException(exceptionBuilder.ToString(),e));
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throw;
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}
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}
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public static SKBitmap OnFlipHorizontalClicked(byte[] bytes)
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{
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var bitmap = SKBitmap.Decode(bytes);
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var flippedBitmap = SKBitmap.Decode(bytes);
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using var canvas = new SKCanvas(flippedBitmap);
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canvas.Clear();
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canvas.Scale(1, -1, 0, bitmap.Height / 2);
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canvas.DrawBitmap(bitmap, new SKPoint());
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return flippedBitmap;
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}
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public static SKBitmap Rotate(SKBitmap bitmap, double angle)
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{
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double radians = Math.PI * angle / 180;
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float sine = (float)Math.Abs(Math.Sin(radians));
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float cosine = (float)Math.Abs(Math.Cos(radians));
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int originalWidth = bitmap.Width;
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int originalHeight = bitmap.Height;
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int rotatedWidth = (int)(cosine * originalWidth + sine * originalHeight);
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int rotatedHeight = (int)(cosine * originalHeight + sine * originalWidth);
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var rotatedBitmap = new SKBitmap(rotatedWidth, rotatedHeight);
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using (var surface = new SKCanvas(rotatedBitmap))
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{
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surface.Translate(rotatedWidth / 2, rotatedHeight / 2);
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surface.RotateDegrees((float)angle);
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surface.Translate(-originalWidth / 2, -originalHeight / 2);
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surface.DrawBitmap(bitmap, new SKPoint());
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}
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return rotatedBitmap;
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}
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}
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}
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