[C#/MAUI/.NET6] ICanvas 인터페이스 : FillPath 메소드를 사용해 NonZero 와인딩 모드 설정하기

TestProject.zip

0.15MB

▶ GraphicsDrawable.cs

namespace TestProject;

/// <summary>
/// 그래픽스 그리기 가능형
/// </summary>
public class GraphicsDrawable : IDrawable
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 그리기 - Draw(canvas, dirtyRectangle)

    /// <summary>
    /// 그리기
    /// </summary>
    /// <param name="canvas">캔버스</param>
    /// <param name="dirtyRectangle">더티 사각형</param>
    public void Draw(ICanvas canvas, RectF dirtyRectangle)
    {
        float radius = 0.45f * Math.Min(dirtyRectangle.Width, dirtyRectangle.Height);

        PathF path = new PathF();

        path.MoveTo(dirtyRectangle.Center.X, dirtyRectangle.Center.Y - radius);

        for(int i = 1; i < 5; i++)
        {
            double angle = i * 4 * Math.PI / 5;

            path.LineTo
            (
                new PointF
                (
                    radius * (float)Math.Sin(angle) + dirtyRectangle.Center.X,
                   -radius * (float)Math.Cos(angle) + dirtyRectangle.Center.Y
                )
            );
        }

        path.Close();

        canvas.StrokeSize     = 15;
        canvas.StrokeLineJoin = LineJoin.Round;
        canvas.StrokeColor    = Colors.Red;
        canvas.FillColor      = Colors.Blue;

        canvas.FillPath(path, WindingMode.NonZero);

        canvas.DrawPath(path);
    }

    #endregion
}

 

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▶ MainPage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage x:Class="TestProject.MainPage"
    xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
    xmlns:local="clr-namespace:TestProject">
    <ContentPage.Resources>
        <local:GraphicsDrawable x:Key="GraphicsDrawableKey" />
    </ContentPage.Resources>
    <GraphicsView
        HorizontalOptions="Center"
        VerticalOptions="Center"
        WidthRequest="350"
        HeightRequest="350"
        Drawable="{StaticResource GraphicsDrawableKey}" />
</ContentPage>