mirror of
https://gitee.com/akwkevin/aistudio.-wpf.-diagram
synced 2026-03-03 00:00:57 +08:00
82 lines
4.2 KiB
C#
82 lines
4.2 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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var connectorWidth = double.IsNaN(connector.ConnectorWidth) ? 0 : connector.ConnectorWidth;
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var connectorHeight = double.IsNaN(connector.ConnectorHeight) ? 0 : connector.ConnectorHeight;
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var left = connector.DataItem.Left;
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var top = connector.DataItem.Top;
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var itemWidth = connector.DataItem.GetItemWidth();
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var itemHeight = connector.DataItem.GetItemHeight();
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if (connector.IsInnerPoint)
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{
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point = new PointBase(left + itemWidth * connector.XRatio - connectorWidth / 2,
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top + itemHeight * connector.YRatio - 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(left - connectorWidth / 2, top + (itemHeight / 2) - connectorHeight / 2);
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break;
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case ConnectorOrientation.TopLeft:
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point = new PointBase(left - connectorWidth / 2, top - connectorHeight / 2);
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break;
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case ConnectorOrientation.Top:
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point = new PointBase(left + (itemWidth / 2) - connectorWidth / 2, top - connectorHeight / 2);
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break;
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case ConnectorOrientation.TopRight:
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point = new PointBase(left + itemWidth - connectorWidth / 2, top - connectorHeight / 2);
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break;
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case ConnectorOrientation.Right:
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point = new PointBase(left + itemWidth - connectorWidth / 2, top + (itemHeight / 2) - connectorHeight / 2);
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break;
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case ConnectorOrientation.BottomRight:
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point = new PointBase(left + itemWidth - connectorWidth / 2, top + itemHeight - connectorHeight / 2);
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break;
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case ConnectorOrientation.Bottom:
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point = new PointBase(left + (itemWidth / 2) - connectorWidth / 2, top + itemHeight - connectorHeight / 2);
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break;
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case ConnectorOrientation.BottomLeft:
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point = new PointBase(left - connectorWidth / 2, top + itemHeight - connectorHeight / 2);
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break;
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default:
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point = new PointBase(left + (itemWidth / 2) - connectorWidth / 2, top + (itemHeight / 2) - 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 + connectorWidth / 2;
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point.Y = point.Y + 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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