C# Graphics类代码示例

 public override void Draw(Graphics gr)
 {
     if (Ready)
         {
             gr.DrawRectangle(Pens.Green, Left, Top, Right, Bottom);
         }
 }

        public static void Run()
        {
            // ExStart:AddWatermarkToImage
            // The path to the documents directory.
            string dataDir = RunExamples.GetDataDir_ModifyingAndConvertingImages();

            // Create an instance of Image and load an existing image
            using (Image image = Image.Load(dataDir + "WaterMark.bmp"))
            {
                // Create and initialize an instance of Graphics class
                Graphics graphics = new Graphics(image);

                // Creates an instance of Font
                Font font = new Font("Times New Roman", 16, FontStyle.Bold);

                // Create an instance of SolidBrush and set its various properties
                SolidBrush brush = new SolidBrush();
                brush.Color = Color.Black;
                brush.Opacity = 100;

                // Draw a String using the SolidBrush object and Font, at specific Point and Save the image with changes.
                graphics.DrawString("Aspose.Imaging for .Net", font, brush, new PointF(image.Width / 2, image.Height / 2));
                image.Save(dataDir + "AddWatermarkToImage_out.bmp");
                // ExStart:AddWatermarkToImage

                // Display Status.
                Console.WriteLine("Watermark added successfully.");
               
            }
        }

 public override void Draw(Graphics e)
 {
     Point[] PointArray = new Point[PointList.Count];
     PointArray = PointList.ToArray();
     for (int i = 0; i < PointList.Count; i++)
         e.DrawLines(new Pen(Color.Black), PointArray);
 }

        public static void Run()
        {
            // ExStart:DrawingBezier
            // The path to the documents directory.
            string dataDir = RunExamples.GetDataDir_DrawingAndFormattingImages();

            // Creates an instance of FileStream
            using (FileStream stream = new FileStream(dataDir + "DrawingArc_out.bmp", FileMode.Create))
            {
                // Create an instance of BmpOptions and set its various properties
                BmpOptions saveOptions = new BmpOptions();
                saveOptions.BitsPerPixel = 32;

                // Set the Source for BmpOptions and create an instance of Image
                saveOptions.Source = new StreamSource(stream);               
                using (Image image = Image.Create(saveOptions, 100, 100))
                {
                    // Create and initialize an instance of Graphics class and clear Graphics surface
                    Graphics graphic = new Graphics(image);
                    graphic.Clear(Color.Yellow);

                    // Draw an arc shape by specifying the Pen object having red black color and coordinates, height, width, start & end angles                 
                    int width = 100;
                    int height = 200;
                    int startAngle = 45;
                    int sweepAngle = 270;

                    // Draw arc to screen and save all changes.
                    graphic.DrawArc(new Pen(Color.Black), 0, 0, width, height, startAngle, sweepAngle);
                    image.Save();
                }
                stream.Close();
            }
        }

    // Use this for initialization
    void Start()
    {
        curve = new Curve();

        graphics = new Graphics();
        graphics.verticesDrawer = verticesDrawer;
    }

        void DrawStreched(Graphics g, Rectangle dest)
        {
            g.Draw(texture, new Rectangle(dest.X, dest.Y, paddingLeft, paddingTop),
                            new Rectangle(0, 0, paddingLeft, paddingTop), border);

            g.Draw(texture, new Rectangle(dest.X + paddingLeft, dest.Y, dest.Width - paddingLeft - paddingRight, paddingTop),
                            new Rectangle(paddingLeft, 0, texture.Width - paddingLeft - paddingRight, paddingTop), border);

            g.Draw(texture, new Rectangle(dest.X + dest.Width - paddingRight, dest.Y, paddingLeft, paddingTop),
                            new Rectangle(texture.Width - paddingRight, 0, paddingLeft, paddingTop), border);

            g.Draw(texture, new Rectangle(dest.X, dest.Y + paddingTop, paddingLeft, dest.Height - paddingTop - paddingBottom),
                            new Rectangle(0, paddingTop, paddingLeft, texture.Height - paddingTop - paddingBottom), border);

            g.Draw(texture, new Rectangle(dest.X + paddingLeft, dest.Y + paddingTop, dest.Width - paddingLeft - paddingRight, dest.Height - paddingTop - paddingBottom),
                            new Rectangle(paddingLeft, paddingTop, texture.Width - paddingLeft - paddingRight, texture.Height - paddingLeft - paddingRight), color);

            g.Draw(texture, new Rectangle(dest.X + dest.Width - paddingRight, dest.Y + paddingTop, paddingRight, dest.Height - paddingTop - paddingBottom),
                            new Rectangle(texture.Width - paddingRight, paddingTop, paddingRight, texture.Height - paddingTop - paddingBottom), border);

            g.Draw(texture, new Rectangle(dest.X, dest.Y + dest.Height - paddingBottom, paddingLeft, paddingBottom),
                            new Rectangle(0, texture.Height - paddingBottom, paddingLeft, paddingBottom), border);

            g.Draw(texture, new Rectangle(dest.X + paddingLeft, dest.Y + dest.Height - paddingBottom, dest.Width - paddingLeft - paddingRight, paddingBottom),
                            new Rectangle(paddingLeft, texture.Height - paddingBottom, texture.Width - paddingLeft - paddingRight, paddingBottom), border);

            g.Draw(texture, new Rectangle(dest.X + dest.Width - paddingRight, dest.Y + dest.Height - paddingBottom, paddingLeft, paddingBottom),
                            new Rectangle(texture.Width - paddingRight, texture.Height - paddingBottom, paddingLeft, paddingBottom), border);
        }

    public void Draw(Graphics graphics, Size buffersize)
    {
        //store transform, (like opengl's glPushMatrix())
        Matrix mat1 = graphics.Transform;

        //transform into position
        graphics.TranslateTransform(m_position.X, m_position.Y);
        graphics.RotateTransform(m_angle/(float)Math.PI * 180.0f);

        try
        {
            //draw body
            graphics.DrawRectangle(new Pen(m_color), rect);

            //draw line in the "forward direction"
            graphics.DrawLine(new Pen(Color.Yellow), 1, 0, 1, 5);
        }
        catch(OverflowException exc)
        {
            //physics overflow :(
        }

        //restore transform
        graphics.Transform = mat1;
    }

        public CylinderPrimitive(Graphics graphicsDevice)
        {
            Debug.Assert (_tessellation >= 3);

            // Create a ring of triangles around the outside of the cylinder.
            for (int i = 0; i <= _tessellation; i++) {
                Vector3 normal = GetCircleVector (i, _tessellation);

                Vector3 topPos = normal * _radius + Vector3.Up * _height;
                Vector3 botPos = normal * _radius + Vector3.Down * _height;

                AddVertex (topPos, normal);
                AddVertex (botPos, normal);
            }

            for (int i = 0; i < _tessellation; i++) {
                AddIndex (i * 2);
                AddIndex (i * 2 + 1);
                AddIndex ((i * 2 + 2));

                AddIndex (i * 2 + 1);
                AddIndex (i * 2 + 3);
                AddIndex (i * 2 + 2);
            }

            // Create flat triangle fan caps to seal the top and bottom.
            CreateCap (_tessellation, _height, _radius, Vector3.Up);
            CreateCap (_tessellation, _height, _radius, Vector3.Down);

            InitializePrimitive (graphicsDevice);
        }

 /// <summary>
 /// Gets the baseline Height of the rectangle
 /// </summary>
 /// <param name="g"></param>
 /// <returns></returns>
 public float GetBaseLineHeight(CssBox b, Graphics g)
 {
     Font f = b.ActualFont;
     FontFamily ff = f.FontFamily;
     FontStyle s = f.Style;
     return f.GetHeight(g) * ff.GetCellAscent(s) / ff.GetLineSpacing(s);
 }

    protected override void ApplyTextWatermark(ImageProcessingActionExecuteArgs args, Graphics g)
    {
        // Draw a filled rectangle
        int rectangleWidth = 14;
        using (Brush brush = new SolidBrush(Color.FromArgb(220, Color.Red)))
        {
            g.FillRectangle(brush, new Rectangle(args.Image.Size.Width - rectangleWidth, 0, rectangleWidth, args.Image.Size.Height));
        }

        using (System.Drawing.Drawing2D.Matrix transform = g.Transform)
        {
            using (StringFormat stringFormat = new StringFormat())
            {
                // Vertical text (bottom -> top)
                stringFormat.FormatFlags = StringFormatFlags.DirectionVertical;
                transform.RotateAt(180F, new PointF(args.Image.Size.Width / 2, args.Image.Size.Height / 2));
                g.Transform = transform;

                // Align: top left, +2px displacement 
                // (because of the matrix transformation we have to use inverted values)
                base.ContentAlignment = ContentAlignment.MiddleLeft;
                base.ContentDisplacement = new Point(-2, -2);

                base.ForeColor = Color.White;
                base.Font.Size = 10;

                // Draw the string by invoking the base Apply method
                base.StringFormat = stringFormat;
                base.ApplyTextWatermark(args, g);
                base.StringFormat = null;
            }
        }
    }

 public virtual void Render(Graphics g)
 {
     for (int i = 0; i < _Particles.Count; i++)
     {
         _Particles[i].Render(g);
     }
 }

        public static void Run()
        {
            // ExStart:DrawingRectangle
            // The path to the documents directory.
            string dataDir = RunExamples.GetDataDir_DrawingAndFormattingImages() + "SampleRectangle_out.bmp";

            // Creates an instance of FileStream
            using (FileStream stream = new FileStream(dataDir, FileMode.Create))
            {
                // Create an instance of BmpOptions and set its various properties
                BmpOptions saveOptions = new BmpOptions();
                saveOptions.BitsPerPixel = 32;

                // Set the Source for BmpOptions and Create an instance of Image
                saveOptions.Source = new StreamSource(stream);
                using (Image image = Image.Create(saveOptions, 100, 100))
                {
                    // Create and initialize an instance of Graphics class,  Clear Graphics surface, Draw a rectangle shapes and  save all changes.
                    Graphics graphic = new Graphics(image);
                    graphic.Clear(Color.Yellow);
                    graphic.DrawRectangle(new Pen(Color.Red), new Rectangle(30, 10, 40, 80));
                    graphic.DrawRectangle(new Pen(new SolidBrush(Color.Blue)), new Rectangle(10, 30, 80, 40));
                    image.Save();
                }
            }
            // ExEnd:DrawingRectangle
        }

		public void Draw(Graphics g, int x, int y, int frame)
		{
			north[frame].Draw(g,x,y-(int)((PckImage.Width*PckImage.Scale)/2));
			south[frame].Draw(g,x,y);
			east[frame].Draw(g,x+(int)((PckImage.Width*PckImage.Scale)/2),y-(int)((PckImage.Width*PckImage.Scale)/4));
			west[frame].Draw(g,x-(int)((PckImage.Width*PckImage.Scale)/2),y-(int)((PckImage.Width*PckImage.Scale)/4));	
		}

        void RenderModel(Graphics.Content.Model10 model, SlimDX.Matrix entityWorld, Effect effect)
        {
            throw new NotImplementedException();
            //if (model == null || !model.Visible || model.Mesh == null) return;

            Matrix world = model.World * entityWorld;
            world.M41 = (float)((int)world.M41);
            world.M42 = (float)((int)world.M42);
            world *= Matrix.Scaling(2f / (float)view.Viewport.Width, 2f / (float)view.Viewport.Height, 1) * Matrix.Translation(-1, -1, 0) * Matrix.Scaling(1, -1, 1);
            world.M43 = 0.5f;

            effect.GetVariableByName("World").AsMatrix().SetMatrix(world);
            effect.GetVariableByName("Texture").AsResource().SetResource(model.TextureShaderView);

            effect.GetTechniqueByName("Render").GetPassByIndex(0).Apply();
            if (model.Mesh != null)
            {
                model.Mesh.Setup(view.Device10, view.Content.Acquire<InputLayout>(
                    new Content.VertexStreamLayoutFromEffect
                {
                    Signature10 = effect.GetTechniqueByIndex(0).GetPassByIndex(0).Description.Signature,
                    Layout = model.Mesh.VertexStreamLayout
                }));

                model.Mesh.Draw(device);
            }
        }

	// Constructor, which saves away all of the important information.
	// We assume that the lock on the "graphics" object is held by the caller.
	internal GraphicsContainer(Graphics graphics)
			{
				// Push this container onto the stack.
				this.graphics = graphics;
				next = graphics.stackTop;
				graphics.stackTop = this;

				// Save the graphics state information.
				clip = graphics.Clip;
				if(clip != null)
				{
					clip = clip.Clone();
				}
				compositingMode = graphics.CompositingMode;
				compositingQuality = graphics.CompositingQuality;
				interpolationMode = graphics.InterpolationMode;
				pageScale = graphics.PageScale;
				pageUnit = graphics.PageUnit;
				pixelOffsetMode = graphics.PixelOffsetMode;
				renderingOrigin = graphics.RenderingOrigin;
				smoothingMode = graphics.SmoothingMode;
				textContrast = graphics.TextContrast;
				textRenderingHint = graphics.TextRenderingHint;
				if (graphics.transform == null)
				{
					transform = null;
				}
				else
				{
					transform = Matrix.Clone(graphics.transform);
				}
			}