55 lines
1.7 KiB
C#
55 lines
1.7 KiB
C#
using Autodesk.Revit.DB;
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using Autodesk.Revit.UI;
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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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namespace DotNet.Revit.ViewTransform
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{
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public static class ViewTransformHelper
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{
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/// <summary>
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/// 屏幕点转为空间三维点.
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/// </summary>
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/// <param name="view">指定转换到的视图.</param>
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/// <param name="point">指定屏幕上的点.</param>
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/// <returns></returns>
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public static XYZ ScreenToWorld(this View view, System.Drawing.Point point)
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{
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if (view == null)
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throw new NullReferenceException();
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var uiDoc = new UIDocument(view.Document);
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var uiView = uiDoc.GetOpenUIViews().FirstOrDefault(m => m.ViewId == view.Id);
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if (uiView == null)
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throw new NullReferenceException();
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var rect = uiView.GetWindowRectangle();
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var corners = uiView.GetZoomCorners();
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var mousePoint = new XYZ(point.X, point.Y, 0);
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var screenLeftlower = new XYZ(rect.Left, rect.Bottom, 0);
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var screenRightupper = new XYZ(rect.Right, rect.Top, 0);
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// 换算比例
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var scale = corners[0].DistanceTo(corners[1])
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/ screenLeftlower.DistanceTo(screenRightupper);
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var xdis = (point.X - screenLeftlower.X) * scale;
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var ydis = (screenLeftlower.Y - point.Y) * scale;
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var vp = uiDoc.ActiveView.UpDirection;
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var vr = uiDoc.ActiveView.RightDirection;
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var distance = mousePoint.DistanceTo(screenLeftlower) * scale;
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var result = corners[0] + vr * xdis + vp * ydis;
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return result;
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}
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}
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}
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