public Stream Resize(int width, int height)
{
System.IO.MemoryStream ms = new MemoryStream();
_image.Mutate(x => x.Resize(width, height));
_image.SaveAsPng(ms);
return(ms);
}
private void ResizeWithImageSharp(string filePath, string resizedFilePath, int size)
{
using (SixLabors.ImageSharp.Image <Rgba32> image = SixLabors.ImageSharp.Image.Load(filePath))
{
image.Mutate(ctx => ctx.Resize(size, size));
image.Save(resizedFilePath);
}
}
public byte[] GetVideoImageByte(int imageId, int?maxWidth)
{
var imageInfo = this._imageRepo.Get(imageId);
if (imageInfo != null)
{
var imageRootPath = this._settingService.GetSettingValue(SettingKey.ImageDir);
var imageFullPath = imageRootPath + imageInfo.Path.Replace("/", "\\");
var imageExt = Path.GetExtension(imageInfo.Path);
if (System.IO.File.Exists(imageFullPath))
{
// 原图输出
if (!maxWidth.HasValue)
{
return(System.IO.File.ReadAllBytes(imageFullPath));
}
else
{
// 处理缩略图
using (SixLabors.ImageSharp.Image <Rgba32> srcImg = SixLabors.ImageSharp.Image.Load(imageFullPath))
{
int resetWidth = maxWidth.Value;
if (resetWidth > srcImg.Width)
{
resetWidth = srcImg.Width;
}
// 缩细倍数
var imgP = (Convert.ToDouble(resetWidth) / Convert.ToDouble(srcImg.Width));
var resetHeight = Convert.ToInt32(Convert.ToDouble(srcImg.Height) * imgP);
srcImg.Mutate(x => x.Resize(resetWidth, resetHeight));
using (System.IO.MemoryStream ms = new MemoryStream())
{
srcImg.Save(ms, SixLabors.ImageSharp.ImageFormats.Jpeg);
byte[] imageByte = ms.ToArray();
return(imageByte);
}
}
}
}
}
return(null);
}
/// <summary>
/// 获取图片二进制数据
/// </summary>
/// <param name="path">物理路径</param>
/// <param name="maxWidth">最大宽度</param>
/// <returns></returns>
protected byte[] GetImageByte(string path, int?maxWidth)
{
if (System.IO.File.Exists(path))
{
var imageFullPath = path.Replace("/", "\\");
var imageExt = Path.GetExtension(imageFullPath);
// 原图输出
if (!maxWidth.HasValue)
{
return(System.IO.File.ReadAllBytes(imageFullPath));
}
else
{
// 处理缩略图
using (SixLabors.ImageSharp.Image <Rgba32> srcImg = SixLabors.ImageSharp.Image.Load(imageFullPath))
{
int resetWidth = maxWidth.Value;
if (resetWidth > srcImg.Width)
{
resetWidth = srcImg.Width;
}
// 缩细倍数
var imgP = (Convert.ToDouble(resetWidth) / Convert.ToDouble(srcImg.Width));
var resetHeight = Convert.ToInt32(Convert.ToDouble(srcImg.Height) * imgP);
srcImg.Mutate(x => x.Resize(resetWidth, resetHeight));
using (System.IO.MemoryStream ms = new MemoryStream())
{
srcImg.Save(ms, SixLabors.ImageSharp.ImageFormats.Jpeg);
byte[] imageByte = ms.ToArray();
return(imageByte);
}
}
}
}
return(null);
}
public void MakeTexture(Device device, SixLabors.ImageSharp.Image <Rgba32> bitmap, bool b黒を透過する)
{
bitmap.Mutate(c => c.Flip(FlipMode.Vertical));
if (b黒を透過する)
{
bitmap.Mutate(c => c.BackgroundColor(SixLabors.ImageSharp.Color.Transparent));
}
try
{
this.szTextureSize = new Size(bitmap.Width, bitmap.Height);
this.rcImageRect = new Rectangle(0, 0, this.szTextureSize.Width, this.szTextureSize.Height);
//VBOをここで生成する
this.vrtVBO = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, (int)this.vrtVBO);
GL.BufferData(BufferTarget.ArrayBuffer, this.vertices.Length * Vector3.SizeInBytes, vertices, BufferUsageHint.DynamicDraw);
this.texVBO = GL.GenBuffer();
GL.BindBuffer(BufferTarget.ArrayBuffer, (int)this.texVBO);
GL.BufferData(BufferTarget.ArrayBuffer, this.texcoord.Length * Vector2.SizeInBytes, texcoord, BufferUsageHint.DynamicDraw);
GL.BindBuffer(BufferTarget.ArrayBuffer, 0);
this.texture = GL.GenTexture();
//テクスチャ用バッファのひもづけ
GL.BindTexture(TextureTarget.Texture2D, (int)this.texture);
//テクスチャの設定
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureBaseLevel, 0);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMaxLevel, 3);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinLod, 0);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMaxLod, 3);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMinFilter, (int)TextureMinFilter.LinearMipmapLinear);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureMagFilter, (int)TextureMagFilter.LinearSharpenSgis);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapS, (int)TextureWrapMode.ClampToEdge);
GL.TexParameter(TextureTarget.Texture2D, TextureParameterName.TextureWrapT, (int)TextureWrapMode.ClampToEdge);
if (bitmap.TryGetSinglePixelSpan(out Span <Rgba32> span))
{
GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, bitmap.Width, bitmap.Height, 0, OpenTK.Graphics.OpenGL.PixelFormat.Rgba, PixelType.UnsignedByte, span.ToArray());
}
else
{
throw new CTextureCreateFailedException("GetPixelData failed");
}
GL.Hint(HintTarget.GenerateMipmapHint, HintMode.Nicest);
GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
UpdateTexCoordArray(0, 0, 0, 1, 1, 1, 1, 0); //TextureCoordinateの初期化
GL.BindTexture(TextureTarget.Texture2D, 0);
this.bTextureDisposed = false;
}
catch
{
this.Dispose();
throw new CTextureCreateFailedException(string.Format("Failed to create texture. \n"));
}
}
