CAD net Zoom功能

最新推荐文章于 2024-04-25 01:32:37 发布

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最新推荐文章于 2024-04-25 01:32:37 发布 · 1.1k 阅读

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本文介绍了一组针对AutoCAD视图操作的扩展方法，包括视图转换矩阵的计算、视图缩放和平移等功能，这些方法可以方便地实现对AutoCAD图形窗口的定制化操作。

using Autodesk.AutoCAD.ApplicationServices;
using Autodesk.AutoCAD.DatabaseServices;
using Autodesk.AutoCAD.Geometry;
using Autodesk.AutoCAD.Runtime;
using System;
using System.Collections.Generic;
using System.Linq;

namespace Autodesk.AutoCAD.EditorInput
{
    public static class ExtensionMethods
    {
        public static Matrix3d EyeToWorld(this ViewTableRecord view)
        {
            if (view == null)
                throw new ArgumentNullException("view");

            return
                Matrix3d.Rotation(-view.ViewTwist, view.ViewDirection, view.Target) *
                Matrix3d.Displacement(view.Target - Point3d.Origin) *
                Matrix3d.PlaneToWorld(view.ViewDirection);
        }

        public static Matrix3d WorldToEye(this ViewTableRecord view)
        {
            return view.EyeToWorld().Inverse();
        }

        public static void Zoom(this Editor ed, Extents3d ext)
        {
            if (ed == null)