[C#/MAUI/.NET6] ICanvas 인터페이스 : Rotate 메소드를 사용해 특정 위치를 기준으로 회전 변환하기

■ ICanvas 인터페이스의 Rotate 메소드를 사용해 특정 위치를 기준으로 회전 변환을 하는 방법을 보여준다.

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)
    {
        canvas.Rotate(45, dirtyRectangle.Center.X, dirtyRectangle.Center.Y);

        canvas.FillColor = Colors.Yellow;

        canvas.FillRectangle(dirtyRectangle);

        canvas.FontSize  = 36;
        canvas.FontColor = Colors.Blue;

        canvas.FillColor = Colors.Blue;

        canvas.FillCircle(0, 0, 3);

        canvas.DrawString(".NET MAUI", 150, 150, HorizontalAlignment.Left);
    }

    #endregion
}

 

▶ 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>