79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
using Newtonsoft.Json;
|
|
using System;
|
|
using System.Collections.Generic;
|
|
using System.ComponentModel;
|
|
using System.Drawing;
|
|
using System.Drawing.Drawing2D;
|
|
using System.Linq;
|
|
using System.Text;
|
|
|
|
namespace Io.Github.Kerwinxu.LibShapes.Core.Shape
|
|
{
|
|
/// <summary>
|
|
/// 椭圆弧
|
|
/// </summary>
|
|
public class ShapeArc : ShapeRectangle
|
|
{
|
|
public ShapeArc()
|
|
{
|
|
// 设置默认的角度
|
|
StartAngle = 0;
|
|
SweepAngle = 90;
|
|
}
|
|
|
|
[DescriptionAttribute("弧线的起始角度"), DisplayName("弧线的起始角度"), CategoryAttribute("外观")]
|
|
public float StartAngle { get; set; }
|
|
|
|
|
|
[DescriptionAttribute("startAngle 和弧线末尾之间的角度"), DisplayName("夹角"), CategoryAttribute("外观")]
|
|
public float SweepAngle { get; set; }
|
|
|
|
public override ShapeEle DeepClone()
|
|
{
|
|
// 这里用json的方式
|
|
string json = JsonConvert.SerializeObject(this);
|
|
return JsonConvert.DeserializeObject<ShapeArc>(json);
|
|
//throw new NotImplementedException();
|
|
}
|
|
|
|
public override System.Drawing.RectangleF GetBounds(Matrix matrix)
|
|
{
|
|
// 这个实际上是矩形的
|
|
GraphicsPath path = base.GetGraphicsPathWithAngle();
|
|
// 这里加上旋转
|
|
Matrix matrix1 = new Matrix();
|
|
// 这里按照中心点旋转,
|
|
var rect = path.GetBounds();
|
|
var centerPoint = new PointF() { X = rect.X + rect.Width / 2, Y = rect.Y + rect.Height / 2 };
|
|
matrix1.RotateAt(Angle, centerPoint);
|
|
Matrix matrix2 = matrix.Clone();
|
|
matrix2.Multiply(matrix1);
|
|
// 应用这个转换
|
|
path.Transform(matrix2);
|
|
return path.GetBounds();
|
|
//return base.GetBounds(matrix);
|
|
}
|
|
|
|
public override GraphicsPath GetGraphicsPathWithAngle()
|
|
{
|
|
GraphicsPath path = new GraphicsPath();
|
|
var rect = new System.Drawing.RectangleF()
|
|
{
|
|
X = getX(),
|
|
Y = getY(),
|
|
Width = getWidth(),
|
|
Height = getHeight(),
|
|
};
|
|
|
|
var rect2 = correctRectangle(rect);
|
|
path.AddArc(
|
|
rect2,
|
|
StartAngle,
|
|
SweepAngle);
|
|
|
|
return path;
|
|
//return base.GetGraphicsPathWithAngle();
|
|
}
|
|
}
|
|
}
|
