Imports System.Drawing

Imports Vintasoft.Imaging
Imports Vintasoft.Imaging.Drawing
Imports Vintasoft.Imaging.Drawing.SkiaSharp

Class SkiaSharpDrawingEngineExample
    ''' <summary>
    ''' Creates SkiaSharp drawing engine on specified image and performs drawing.
    ''' </summary>
    Public Shared Sub DrawWithSkiaSharpDrawingEngine(image As VintasoftImage)
        ' create drawing engine for image
        Using drawingEngine As New SkiaSharpDrawingEngine(image)
            ' create drawing area
            Dim drawingArea As New RectangleF(0, 0, image.Width, image.Height)
            ' draw objects in area
            DrawingExample(drawingEngine, drawingArea)
        End Using
    End Sub

    ''' <summary>
    ''' Draws graphic objects using specified drawing engine.
    ''' </summary>
    ''' <param name="drawingEngine">Drawing engine.</param>
    ''' <param name="drawingArea">Image area to draw objects in.</param>
    Public Shared Sub DrawingExample(drawingEngine As DrawingEngine, drawingArea As RectangleF)
        ' create bounding rectangle for ellipse
        Dim ellipseRect As New RectangleF(drawingArea.X + drawingArea.Width * 0.3F, drawingArea.Y + drawingArea.Height * 0.3F, drawingArea.Width * 0.4F, drawingArea.Height * 0.4F)

        ' create brush and pen to draw ellipse
        Using brush As IDrawingSolidBrush = drawingEngine.DrawingFactory.CreateSolidBrush(Color.Blue)
            Using pen As IDrawingPen = drawingEngine.DrawingFactory.CreatePen(Color.Red, 4F)
                ' fill ellipse
                drawingEngine.FillEllipse(brush, ellipseRect)
                ' stroke ellipse
                drawingEngine.DrawEllipse(pen, ellipseRect)
            End Using
        End Using

        ' create brush and font to draw text
        Using textBrush As IDrawingSolidBrush = drawingEngine.DrawingFactory.CreateSolidBrush(Color.Yellow)
            Using font As IDrawingFont = drawingEngine.DrawingFactory.CreateFont("Arial", 30, True, False)
                ' create properties to layout text
                Dim layoutProperties As New TextLayoutProperties(AnchorType.Center)
                ' draw text
                drawingEngine.DrawText("Text", font, textBrush, ellipseRect, layoutProperties)
            End Using
        End Using
    End Sub
End Class

using System.Drawing;

using Vintasoft.Imaging;
using Vintasoft.Imaging.Drawing;
using Vintasoft.Imaging.Drawing.SkiaSharp;

namespace CSHARP
{
    class SkiaSharpDrawingEngineExample
    {
        /// <summary>
        /// Creates SkiaSharp drawing engine on specified image and performs drawing.
        /// </summary>
        public static void DrawWithSkiaSharpDrawingEngine(VintasoftImage image)
        {
            // create drawing engine for image
            using (SkiaSharpDrawingEngine drawingEngine = new SkiaSharpDrawingEngine(image))
            {
                // create drawing area
                RectangleF drawingArea = new RectangleF(0, 0, image.Width, image.Height);
                // draw objects in area
                DrawingExample(drawingEngine, drawingArea);
            }
        }

        /// <summary>
        /// Draws graphic objects using specified drawing engine.
        /// </summary>
        /// <param name="drawingEngine">Drawing engine.</param>
        /// <param name="drawingArea">Image area to draw objects in.</param>
        public static void DrawingExample(DrawingEngine drawingEngine, RectangleF drawingArea)
        {
            // create bounding rectangle for ellipse
            RectangleF ellipseRect = new RectangleF(
                drawingArea.X + drawingArea.Width * 0.3f,
                drawingArea.Y + drawingArea.Height * 0.3f,
                drawingArea.Width * 0.4f,
                drawingArea.Height * 0.4f);

            // create brush and pen to draw ellipse
            using (IDrawingSolidBrush brush = drawingEngine.DrawingFactory.CreateSolidBrush(Color.Blue))
            {
                using (IDrawingPen pen = drawingEngine.DrawingFactory.CreatePen(Color.Red, 4f))
                {
                    // fill ellipse
                    drawingEngine.FillEllipse(brush, ellipseRect);
                    // stroke ellipse
                    drawingEngine.DrawEllipse(pen, ellipseRect);
                }
            }

            // create brush and font to draw text
            using (IDrawingSolidBrush textBrush = drawingEngine.DrawingFactory.CreateSolidBrush(Color.Yellow))
            {
                using (IDrawingFont font = drawingEngine.DrawingFactory.CreateFont("Arial", 30, true, false))
                {
                    // create properties to layout text
                    TextLayoutProperties layoutProperties = new TextLayoutProperties(AnchorType.Center);
                    // draw text
                    drawingEngine.DrawText("Text", font, textBrush, ellipseRect, layoutProperties);
                }
            }
        }
    }
}