mirror of
https://gitee.com/akwkevin/aistudio.-wpf.-diagram
synced 2026-03-03 00:00:57 +08:00
77 lines
4.6 KiB
C#
77 lines
4.6 KiB
C#
using System;
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using AIStudio.Wpf.DiagramDesigner.Geometrys;
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namespace AIStudio.Wpf.DiagramDesigner
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{
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public class PointHelper
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{
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public static PointBase GetPointForConnector(FullyCreatedConnectorInfo connector, bool middle = false)
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{
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PointBase point = new PointBase();
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if (connector == null || connector.DataItem == null)
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{
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return point;
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}
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if (connector.IsInnerPoint)
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{
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point = new PointBase(connector.DataItem.Left + connector.DataItem.ItemWidth * connector.XRatio - connector.ConnectorWidth / 2,
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connector.DataItem.Top + connector.DataItem.ItemHeight * connector.YRatio - connector.ConnectorHeight / 2);
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}
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else if (connector.IsPortless)
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{
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point = connector.DataItem.MiddlePosition;
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}
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else
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{
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switch (connector.Orientation)
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{
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case ConnectorOrientation.Left:
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point = new PointBase(connector.DataItem.Left - connector.ConnectorWidth / 2, connector.DataItem.Top + (connector.DataItem.ItemHeight / 2) - connector.ConnectorHeight / 2);
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break;
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case ConnectorOrientation.TopLeft:
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point = new PointBase(connector.DataItem.Left - connector.ConnectorWidth / 2, connector.DataItem.Top - connector.ConnectorHeight / 2);
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break;
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case ConnectorOrientation.Top:
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point = new PointBase(connector.DataItem.Left + (connector.DataItem.ItemWidth / 2) - connector.ConnectorWidth / 2, connector.DataItem.Top - connector.ConnectorHeight / 2);
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break;
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case ConnectorOrientation.TopRight:
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point = new PointBase(connector.DataItem.Left + connector.DataItem.ItemWidth - connector.ConnectorWidth / 2, connector.DataItem.Top - connector.ConnectorHeight / 2);
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break;
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case ConnectorOrientation.Right:
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point = new PointBase(connector.DataItem.Left + connector.DataItem.ItemWidth - connector.ConnectorWidth / 2, connector.DataItem.Top + (connector.DataItem.ItemHeight / 2) - connector.ConnectorHeight / 2);
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break;
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case ConnectorOrientation.BottomRight:
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point = new PointBase(connector.DataItem.Left + connector.DataItem.ItemWidth - connector.ConnectorWidth / 2, connector.DataItem.Top + connector.DataItem.ItemHeight - connector.ConnectorHeight / 2);
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break;
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case ConnectorOrientation.Bottom:
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point = new PointBase(connector.DataItem.Left + (connector.DataItem.ItemWidth / 2) - connector.ConnectorWidth / 2, connector.DataItem.Top + connector.DataItem.ItemHeight - connector.ConnectorHeight / 2);
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break;
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case ConnectorOrientation.BottomLeft:
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point = new PointBase(connector.DataItem.Left - connector.ConnectorWidth / 2, connector.DataItem.Top + connector.DataItem.ItemHeight - connector.ConnectorHeight / 2);
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break;
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default:
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point = new PointBase(connector.DataItem.Left + (connector.DataItem.ItemWidth / 2) - connector.ConnectorWidth / 2, connector.DataItem.Top + (connector.DataItem.ItemHeight / 2) - connector.ConnectorHeight / 2);
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break;
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}
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}
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if (middle)
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{
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point.X = point.X + connector.ConnectorWidth / 2;
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point.Y = point.Y + connector.ConnectorHeight / 2;
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}
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//旋转后的坐标
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var newX = (point.X - connector.DataItem.MiddlePosition.X) * Math.Cos(connector.DataItem.Angle * Math.PI / 180) - (point.Y - connector.DataItem.MiddlePosition.Y) * Math.Sin(connector.DataItem.Angle * Math.PI / 180) + connector.DataItem.MiddlePosition.X;
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var newY = (point.Y - connector.DataItem.MiddlePosition.Y) * Math.Cos(connector.DataItem.Angle * Math.PI / 180) - (point.X - connector.DataItem.MiddlePosition.X) * Math.Sin(connector.DataItem.Angle * Math.PI / 180) + connector.DataItem.MiddlePosition.Y;
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//放大缩小后的坐标
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newX = (newX - connector.DataItem.MiddlePosition.X) * connector.DataItem.ScaleX + connector.DataItem.MiddlePosition.X;
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newY = (newY - connector.DataItem.MiddlePosition.Y) * connector.DataItem.ScaleY + connector.DataItem.MiddlePosition.Y;
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return new PointBase(newX, newY);
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}
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}
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}
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