■ GraphicsView 엘리먼트의 Drawable 속성을 사용하는 방법을 보여준다.
▶ GraphicsDrawable.cs
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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) { PointF centerPoint = new PointF(dirtyRectangle.Center.X, dirtyRectangle.Center.Y); float radius = Math.Min(dirtyRectangle.Width, dirtyRectangle.Height) / 4; float distance = 0.8f * radius; PointF centerPoint1 = new PointF ( distance * (float)Math.Cos(9 * Math.PI / 6) + centerPoint.X, distance * (float)Math.Sin(9 * Math.PI / 6) + centerPoint.Y ); PointF centerPoint2 = new PointF ( distance * (float)Math.Cos(1 * Math.PI / 6) + centerPoint.X, distance * (float)Math.Sin(1 * Math.PI / 6) + centerPoint.Y ); PointF centerPoint3 = new PointF ( distance * (float)Math.Cos(5 * Math.PI / 6) + centerPoint.X, distance * (float)Math.Sin(5 * Math.PI / 6) + centerPoint.Y ); canvas.BlendMode = BlendMode.Multiply; canvas.FillColor = Colors.Cyan; canvas.FillCircle(centerPoint1, radius); canvas.FillColor = Colors.Magenta; canvas.FillCircle(centerPoint2, radius); canvas.FillColor = Colors.Yellow; canvas.FillCircle(centerPoint3, radius); } #endregion } |
▶ MainPage.xaml
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<?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="400" HeightRequest="300" Drawable="{StaticResource GraphicsDrawableKey}" /> </ContentPage> |
