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C# 如何将超过图像值的百分比值放入水印中

c# algorithm

C# 如何将超过图像值的百分比值放入水印中,c#,algorithm,C#,Algorithm,我有两个图像，一个水印和另一个将接收标记。例如，我想在水印中加入一个百分比值，该值将超过图像的值 我的代码： public void SetBodyWater(){ this.gr = Graphics.FromImage(this.image); float w = this.image.Width*this.percent/100; float h = this.image.Height*this.percent/100; if(thi

我有两个图像，一个水印和另一个将接收标记。例如，我想在水印中加入一个百分比值，该值将超过图像的值

我的代码：

public void SetBodyWater(){
    this.gr = Graphics.FromImage(this.image);
        
    float w =  this.image.Width*this.percent/100;
    float h =  this.image.Height*this.percent/100;

    if(this.waterMark.Width>this.image.Width){
        w  =  w/this.waterMark.Width;
        w  = w*this.waterMark.Width;
        this.width = Convert.ToInt32(w);
    }else{
        this.width =this.waterMark.Width;
    }
    
    if(this.waterMark.Height>this.image.Height){
        h =  h/this.waterMark.Height;
        h = h*this.waterMark.Height;
        this.height = Convert.ToInt32(h);
    }else{
         this.height = this.waterMark.Height;
    }


    int x = Convert.ToInt32(this.image.Width / 2 - this.width / 2);
    int y = Convert.ToInt32(this.image.Height / 2 - this.height / 2);
    
    Console.Write($"{this.width},{this.height}");

    this.gr.DrawImage(this.waterMark, x, y, this.width, this.height);

    this.GetFormat();
    this.image.Save($"{this.pathNew}/{Path.ChangeExtension(Path.GetRandomFileName(), this.extensao.ToLower())}",
    this.format);
}
但它不起作用。

我的解决方案：

        public void SetBodyWater(){
        this.gr = Graphics.FromImage(this.image);

      if(this.waterMark.Height<this.image.Height && this.waterMark.Width<this.image.Width){
            this.width =  Convert.ToInt32(this.waterMark.Width*this.percent/100);
            this.height = Convert.ToInt32(this.waterMark.Height*this.percent/100);
        }else{
            // float w =  (float)this.image.Width*this.percent/100;
            // float h =  (float)this.image.Height*this.percent/100;

            float w = (float)this.image.Width/this.waterMark.Width;
            float h =  (float)this.image.Height/this.waterMark.Height;

            float maxW = Math.Min(w,h);
            float maxH = Math.Min(w,h);
            if(this.waterMark.Width>this.image.Width){
                maxW =(float) maxW*this.waterMark.Width;
                maxW = (float)maxW*this.percent/100; 
                this.width = Convert.ToInt32(maxW);

                // w  = (float) w/this.waterMark.Width;
                // w  =(float)  w*this.waterMark.Width;
                // this.width = Convert.ToInt32(w);
                
            }else{
                float hs =  (float)this.image.Height*this.percent/100;
                h = (float)  h/this.waterMark.Height;
                h = (float) h*this.waterMark.Height;
                this.height = Convert.ToInt32(h);

                float p =(float) this.height/this.waterMark.Height;
                this.width =  Convert.ToInt32(p*this.waterMark.Width);
            }
            
            if(this.waterMark.Height>this.image.Height){
                maxH =(float) maxH*this.waterMark.Height;
                maxH = (float)maxH*this.percent/100; 
                this.height = Convert.ToInt32(maxH);

                // h = (float)  h/this.waterMark.Height;
                // h = (float) h*this.waterMark.Height;
                // this.height = Convert.ToInt32(h);
            }else{
                float p =(float) this.width/this.waterMark.Width;
                this.height =  Convert.ToInt32(p*this.waterMark.Height);
            }
        }

        // int x = Convert.ToInt32(this.image.Width / 2 - this.waterMark.Width / 2);
        // int y = Convert.ToInt32(this.image.Height / 2 -  this.waterMark.Height / 2);

        int x = Convert.ToInt32(this.image.Width / 2 - this.width / 2);
        int y = Convert.ToInt32(this.image.Height / 2 -  this.height / 2);
        
        Console.Write($"{this.width},{this.height}");


        //this.gr.ScaleTransform(sacle11,sacle12);
        this.gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
        this.gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
        this.gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

        this.gr.DrawImage(this.waterMark, x, y,this.width,this.height);

        this.GetFormat();
        this.pathSucess = $"{this.pathNew}/{Path.ChangeExtension(Path.GetRandomFileName(), this.extensao.ToLower())}";
        this.image.Save(this.pathSucess,this.format);
    }

public void SetBodyWater（）{
this.gr=Graphics.FromImage（this.image）；
if（this.waterMark.Heightthis.image.Height）{
maxH=（float）maxH*this.waterMark.Height；
maxH=（float）maxH*this.percent/100；
this.height=Convert.ToInt32（最大值）；
//h=（浮动）h/this.waterMark.Height；
//h=（float）h*this.waterMark.Height；
//this.height=转换为32（h）；
}否则{
float p=（float）this.width/this.waterMark.width；
this.height=Convert.ToInt32（p*this.waterMark.height）；
}
}
//int x=Convert.ToInt32（this.image.Width/2-this.waterMark.Width/2）；
//int y=转换.ToInt32（this.image.Height/2-this.waterMark.Height/2）；
int x=Convert.ToInt32（this.image.Width/2-this.Width/2）；
int y=转换为32（this.image.Height/2-this.Height/2）；
Write（$“{this.width}，{this.height}”）；
//这个.gr.ScaleTransform（sacle11，sacle12）；
this.gr.CompositingQuality=System.Drawing.Drawing2D.CompositingQuality.HighQuality；
this.gr.InterpolationMode=System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic；
this.gr.SmoothingMode=System.Drawing.Drawing2D.SmoothingMode.HighQuality；
this.gr.DrawImage（this.waterMark，x，y，this.width，this.height）；
这个是.GetFormat（）；
this.pathSucess=$“{this.pathNew}/{Path.ChangeExtension（Path.GetRandomFileName（），this.extensao.ToLower（））}”；
this.image.Save（this.pathSucess，this.format）；
}
我的班级：

    using System;
using System.Reflection;
using System.Drawing;
using System.Drawing.Imaging;
//using System.Drawing.Drawing2D;
using System.IO;
//using System.Threading.Tasks;

namespace Class
{
    public abstract class Img : IDisposable{
        private bool _disposed = false;
        protected Image image {get;set;}
        protected Image waterMark{get;set;}
        protected int width {get;set;}
        protected int height {get;set;}
        protected string path {get;set;}
        protected string pathWater{get;set;}
        protected string extensao {get;set;}
        protected string pathNew {get;set;}
        protected string pathSucess {get;set;}
        protected int percent {get;set;}
        protected int maxWidth {get;set;}
        protected int maxHeight {get;set;}
        protected ImageFormat format{get;set;}
        protected Graphics gr{get;set;}
        protected Color backColor{get;set;}
        protected Bitmap myBitmap {get;set;}
        protected MemoryStream ms{get;set;}
        public T GetPrivateProperty<T>(object obj, string propertyName)=> (T) obj.GetType()
                        .GetProperty(propertyName, BindingFlags.Instance | BindingFlags.NonPublic)
                        .GetValue(obj);
        

        public void SetPrivateProperty<T>(object obj, string propertyName, T value)=>
            obj.GetType()
            .GetProperty(propertyName, BindingFlags.Instance | BindingFlags.NonPublic)
            .SetValue(obj, value);
        

        public void GetFormat(){
            switch (this.extensao){
                case "GIF":
                    this.format = ImageFormat.Gif;
                break;
                case "PNG":
                    this.format = ImageFormat.Png;
                break;
                case "JPEG":
                    this.format = ImageFormat.Jpeg;
                break;
                default:

                break;
            }          
        }

        public void SetTransparent(){
            // Get the color of a background pixel.
            this.backColor = this.myBitmap.GetPixel(0, 0);
            // Make backColor transparent for myBitmap.
            this.myBitmap.MakeTransparent(this.backColor);
            // Draw the transparent bitmap to the screen.
            this.gr.DrawImage(this.myBitmap,0, 0,this.width,this.height);
        }

        public void GetImage(){
            
            this.ms = new MemoryStream(File.ReadAllBytes(this.path));
            this.image = Image.FromStream(this.ms);
            this.extensao = this.image.RawFormat.ToString().ToUpper();
        }

        public void GetWaterMark(){
            this.ms = new MemoryStream(File.ReadAllBytes(this.pathWater));
            this.waterMark = Image.FromStream(ms);
                    
        }

        public void Dispose() => Dispose(true);

        protected virtual void Dispose(bool disposing){
            if (_disposed){
                return;
            }

            if (disposing){
                // Dispose managed state (managed objects).
                this.gr?.Dispose();
                this.image?.Dispose();
                this.waterMark?.Dispose();
                this.ms?.Dispose();
                
            }

            _disposed = true;
        }


    }
}

使用系统；
运用系统反思；
使用系统图；
使用系统、绘图、成像；
//使用System.Drawing.Drawing2D；
使用System.IO；
//使用System.Threading.Tasks；
命名空间类
{
公共抽象类Img:IDisposable{
private bool_disposed=false；
受保护的图像{get；set；}
受保护的图像水印{get；set；}
受保护的整数宽度{get；set；}
受保护的整数高度{get；set；}
受保护的字符串路径{get；set；}
受保护的字符串路径{get；set；}
受保护的字符串extensao{get；set；}
受保护的字符串pathNew{get；set；}
受保护的字符串路径成功{get；set；}
受保护的整数百分比{get；set；}
受保护的整型最大宽度{get；set；}
受保护的整数最大高度{get；set；}
受保护的ImageFormat格式{get；set；}
受保护图形gr{get；set；}
保护色背景色{get；set；}
受保护位图myBitmap{get；set；}
受保护内存流ms{get；set；}
public T GetPrivateProperty（对象对象obj，字符串propertyName）=>（T）obj.GetType（）
.GetProperty（propertyName，BindingFlags.Instance | BindingFlags.NonPublic）
.GetValue（obj）；
public void SetPrivateProperty（对象对象对象，字符串属性名称，T值）=>
obj.GetType（）
.GetProperty（propertyName，BindingFlags.Instance | BindingFlags.NonPublic）
.设定值（obj，值）；
public void GetFormat（）{
开关（此.extensao）{
案例“GIF”：
this.format=ImageFormat.Gif；
打破
案例“PNG”：
this.format=ImageFormat.Png；
打破
案例“JPEG”：
this.format=ImageFormat.Jpeg；
打破
违约：
打破
}          
}
公共空间{
//获取背景像素的颜色。
this.backColor=this.myBitmap.GetPixel（0,0）；
//使myBitmap的背景色透明。
this.myBitmap.MakeTransparent（this.backColor）；
//将透明位图绘制到屏幕上。
this.gr.DrawImage（this.myBitmap，0，0，this.width，this.height）；
}
public void GetImage（）{
this.ms=newmemoryStream（File.ReadAllBytes（this.path））；
this.image=image.FromStream（this.ms）；
this.extensao=this.image.RawFormat.ToString（）.ToUpper（）；
}
public void GetWaterMark（）{
this.ms=newmemorystream（File.ReadAllBytes（this.pathWater））；
this.waterMark=Image.FromStream（ms）；
}
public void Dispose（）=>Dispose（true）；
受保护的虚拟void Dispose（bool disposing）{
如果（_）{
返回；
}
如果（处置）{
//处置托管状态（托管对象）。
这个.gr？.Dispose（）；
这个.image？.Dispose（）；
此.waterMark？.Dispose（）；
这个.ms？.Dispose（）；
}
_这是真的；
}
}
}
拇指类：

using System;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
using System.Drawing.Drawing2D;
//using System.Threading.Tasks;

namespace Class{
    class Thumb:Class.Img{
          public void  ResizeMax(){
            this.GetImage();
            
            var ratioX = (double)this.maxWidth / this.image.Width;
            var ratioY = (double)this.maxHeight / this.image.Height;
            var ratio = Math.Min(ratioX, ratioY);

            this.width = Convert.ToInt32(this.image.Width * ratio);
            this.height =Convert.ToInt32(this.image.Height * ratio);
            
            this.SetBody();
        }

        
        public void SetBody(){
          // Create a Bitmap object 
            this.myBitmap = new Bitmap(this.width,this.height);

            this.gr = Graphics.FromImage(myBitmap);
            this.gr.SmoothingMode = SmoothingMode.AntiAlias;
            this.gr.InterpolationMode = InterpolationMode.HighQualityBicubic;
            this.gr.PixelOffsetMode = PixelOffsetMode.HighQuality;

            // Draw myBitmap to the screen.
            this.gr.DrawImage(this.image, 0, 0,this.width,this.height);

            switch (this.extensao){
                case "GIF":
                    this.SetTransparent();
                    this.format = ImageFormat.Gif;
                break;
                case "PNG":
                    this.SetTransparent();
                    this.format = ImageFormat.Png;
                break;
                case "JPEG":
                    this.format = ImageFormat.Jpeg;
                break;
                default:

                break;
            }
            
            this.pathSucess = $"{this.pathNew}/{Path.ChangeExtension(Path.GetRandomFileName(), this.extensao.ToLower())}";
            this.myBitmap.Save(this.pathSucess,this.format);
        }


        public void ResizePercent(){
            // Task task = new Task(()=>this.GetImage());
            // task.Start();
            // task.Wait();
            this.GetImage();

            this.width = Convert.ToInt32(this.image.Width * this.percent / 100);
            this.height =Convert.ToInt32(this.image.Height * this.percent / 100);
            this.SetBody();

        }

        
        public void SetBodyWater(){
            this.gr = Graphics.FromImage(this.image);

          if(this.waterMark.Height<this.image.Height && this.waterMark.Width<this.image.Width){
                this.width =  Convert.ToInt32(this.waterMark.Width*this.percent/100);
                this.height = Convert.ToInt32(this.waterMark.Height*this.percent/100);
            }else{
                // float w =  (float)this.image.Width*this.percent/100;
                // float h =  (float)this.image.Height*this.percent/100;

                float w = (float)this.image.Width/this.waterMark.Width;
                float h =  (float)this.image.Height/this.waterMark.Height;

                float maxW = Math.Min(w,h);
                float maxH = Math.Min(w,h);
                if(this.waterMark.Width>this.image.Width){
                    maxW =(float) maxW*this.waterMark.Width;
                    maxW = (float)maxW*this.percent/100; 
                    this.width = Convert.ToInt32(maxW);

                    // w  = (float) w/this.waterMark.Width;
                    // w  =(float)  w*this.waterMark.Width;
                    // this.width = Convert.ToInt32(w);
                    
                }else{
                    float hs =  (float)this.image.Height*this.percent/100;
                    h = (float)  h/this.waterMark.Height;
                    h = (float) h*this.waterMark.Height;
                    this.height = Convert.ToInt32(h);

                    float p =(float) this.height/this.waterMark.Height;
                    this.width =  Convert.ToInt32(p*this.waterMark.Width);
                }
                
                if(this.waterMark.Height>this.image.Height){
                    maxH =(float) maxH*this.waterMark.Height;
                    maxH = (float)maxH*this.percent/100; 
                    this.height = Convert.ToInt32(maxH);

                    // h = (float)  h/this.waterMark.Height;
                    // h = (float) h*this.waterMark.Height;
                    // this.height = Convert.ToInt32(h);
                }else{
                    float p =(float) this.width/this.waterMark.Width;
                    this.height =  Convert.ToInt32(p*this.waterMark.Height);
                }
            }

            // int x = Convert.ToInt32(this.image.Width / 2 - this.waterMark.Width / 2);
            // int y = Convert.ToInt32(this.image.Height / 2 -  this.waterMark.Height / 2);

            int x = Convert.ToInt32(this.image.Width / 2 - this.width / 2);
            int y = Convert.ToInt32(this.image.Height / 2 -  this.height / 2);
            
            Console.Write($"{this.width},{this.height}");
  

            //this.gr.ScaleTransform(sacle11,sacle12);
            this.gr.CompositingQuality = System.Drawing.Drawing2D.CompositingQuality.HighQuality;
            this.gr.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.HighQualityBicubic;
            this.gr.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality;

            this.gr.DrawImage(this.waterMark, x, y,this.width,this.height);

            this.GetFormat();
            this.pathSucess = $"{this.pathNew}/{Path.ChangeExtension(Path.GetRandomFileName(), this.extensao.ToLower())}";
            this.image.Save(this.pathSucess,this.format);
        }


        public void ResizePercentWater(){
            // Task task = new Task(()=>this.GetImage());
            // task.Start();
            // task.Wait();
            this.GetImage();
            this.GetWaterMark();

            this.SetBodyWater();

        }

    }
}

使用系统；
使用System.IO；
使用系统图；
使用系统、绘图、成像；
使用System.Drawing.Drawing2D；
//使用System.Threading.Tasks；
命名空间类{
类拇指：class.Img{
公共空间ResizeMax（）{
这是GetImage（）；
var ratioX=（双精度）this.maxWidth/this.image.Width；
var ratioY=（双）this.maxHeight/this.image.Height；
var比率=数学最小值（ratioX，ratioY）；
this.width=Convert.ToInt32（this.image.width*比率）；
this.height=Convert.ToInt32（this.image.height*比率）；
这个.SetBody（）；
}