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■ StreamGeometry 클래스 : 다각형 그리기

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TestProject.zip


MainWindow.xaml

 

 

<Window x:Class="TestProject.MainWindow"

    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

    Width="800"

    Height="600"

    Title="StreamGeometry 클래스 : 다각형 그리기"

    FontFamily="나눔고딕코딩"

    FontSize="16">

    <Grid>

        <Path Name="path"

            HorizontalAlignment="Center"

            VerticalAlignment="Center"

            Stroke="Turquoise"

            StrokeThickness="5" />

    </Grid>

</Window>

 

 

MainWindow.xaml.cs

 

 

using System;

using System.Windows;

using System.Windows.Media;

 

namespace TestProject

{

    /// <summary>

    /// 메인 윈도우

    /// </summary>

    public partial class MainWindow : Window

    {

        //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor

        ////////////////////////////////////////////////////////////////////////////////////////// Public

 

        #region 생성자 - MainWindow()

 

        /// <summary>

        /// 생성자

        /// </summary>

        public MainWindow()

        {

            InitializeComponent();

 

            StreamGeometry geometry = GetPolygonStreamGeometry(new Point(200, 200), 200, 8, 0);

 

            geometry.FillRule = FillRule.EvenOdd;

 

            geometry.Freeze();

 

            this.path.Data = geometry;

        }

 

        #endregion

 

        //////////////////////////////////////////////////////////////////////////////////////////////////// Method

        ////////////////////////////////////////////////////////////////////////////////////////// Private

 

        #region 다각형 스트림 지오메트리 구하기 - GetPolygonStreamGeometry(centerPoint, radius, sideCount, offsetDegree)

 

        /// <summary>

        /// 다각형 스트림 지오메트리 구하기

        /// </summary>

        /// <param name="centerPoint">중심 포인트</param>

        /// <param name="radius">반경</param>

        /// <param name="sideCount">사이드 수</param>

        /// <param name="offsetDegree">오프셋 각도</param>

        /// <returns>다각형 스트림 지오메트리</returns>

        private StreamGeometry GetPolygonStreamGeometry(Point centerPoint, double radius, int sideCount, double offsetDegree)

        {

            StreamGeometry geometry = new StreamGeometry();

 

            using(StreamGeometryContext context = geometry.Open())

            {

                double step = 2 * Math.PI / Math.Max(sideCount, 3);

 

                Point currentPoint = centerPoint;

 

                double radian = Math.PI * offsetDegree / 180.0;

 

                for(int i = 0; i < sideCount; i++, radian += step)

                {

                    currentPoint.X = centerPoint.X + radius * Math.Cos(radian);

                    currentPoint.Y = centerPoint.Y + radius * Math.Sin(radian);

 

                    if(i == 0)

                    {

                        context.BeginFigure(currentPoint, true, true);

                    }

                    else

                    {

                        context.LineTo(currentPoint, true, false);

                    }

                }

            }

 

            return geometry;

        }

 

        #endregion

    }

}

 

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Posted by 사용자 icodebroker

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