60 lines
1.8 KiB
C#
60 lines
1.8 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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using System.Windows.Media;
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namespace DrawFigureLibrary.Figures
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{
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public class PolygonFigure : Figure
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{
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public Point[] Points { get; private set; }
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public PolygonFigure(string name, Point[] points) : base(name, 0, 0, 0, 0)
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{
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if (points == null || points.Length < 3) throw new ArgumentException("Многоугольник должен иметь минимум 3 точки.");
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Points = points;
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RecalcBounds();
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}
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private void RecalcBounds()
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{
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double minX = Points.Min(p => p.X);
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double minY = Points.Min(p => p.Y);
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double maxX = Points.Max(p => p.X);
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double maxY = Points.Max(p => p.Y);
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x = (int)minX;
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y = (int)minY;
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w = (int)(maxX - minX);
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h = (int)(maxY - minY);
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}
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public override void Draw(DrawingContext drawingContext)
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{
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StreamGeometry g = new StreamGeometry();
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using (var ctx = g.Open())
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{
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ctx.BeginFigure(Points[0], isFilled: true, isClosed: true);
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ctx.PolyLineTo(Points.Skip(1).ToArray(), isStroked: true, isSmoothJoin: false);
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}
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drawingContext.DrawGeometry(null, Init.pen, g);
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}
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public override void MoveBy(int deltaX, int deltaY)
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{
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if (Init.DrawingImage == null) return;
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if (Check(this, deltaX, deltaY, Init.DrawingImage))
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{
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for (int i = 0; i < Points.Length; i++) Points[i] = new Point( Points[i].X + deltaX, Points[i].Y + deltaY );
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RecalcBounds();
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}
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}
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}
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}
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