ComputerGraphics/20210129/ljs/LjsGo.Navisworks/GraphicsAssignment/ExportGeometryToJson/ExportGeometryToJsonCmd.cs

using Autodesk.Navisworks.Api;
using Autodesk.Navisworks.Api.Plugins;
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows;
using Application = Autodesk.Navisworks.Api.Application;

using ComApi = Autodesk.Navisworks.Api.Interop.ComApi;
using LjsGo.Navisworks.GraphicsAssignment.ExportGeometryToJson.Models;
using System.IO;
using System.Reflection;
using Autodesk.Navisworks.Api.ComApi;
using LjsGo.Navisworks.GraphicsAssignment.ExportGeometryToJson;
using Autodesk.Navisworks.Api.Interop.ComApi;

namespace LjsGo.Navisworks.GraphicsAssignment
{
    //基本插件
    [Plugin("Basic", "ADSK", ToolTip = "Popups", DisplayName = "TestTest")]//名字，开发者号（四位字串），提示，用户界面显示名
    [AddInPlugin(AddInLocation.AddIn)]//设定插件的位置
    public class ExportGeometryToJsonCmd : AddInPlugin
    {
        private static string AssemblyPath = Path.GetDirectoryName(typeof(ExportGeometryToJsonCmd).Assembly.Location);
        public override int Execute(params string[] parameters)
        {
            try
            {

                //当前文档
                Document doc = Application.ActiveDocument;//application是运行了之后自动提供的

                // get the current selection 
                ModelItemCollection oModelColl = Application.ActiveDocument.CurrentSelection.SelectedItems;

                //convert to COM selection
                InwOpState oState = ComApiBridge.State;
                InwOpSelection oSel = ComApiBridge.ToInwOpSelection(oModelColl);

                // create the callback object


                var instances = new List<Instance>();
                var meshs = new List<Mesh>();
                var materials = new List<Material> { new Material { color = "#808080", transparent = 1.0 }};
                ModelData modelData = new ModelData
                {
                    instances = instances,
                    meshes = meshs,
                    materials = materials,
                };

                var instanceIndex = 0;
                foreach (InwOaPath3 path in oSel.Paths())
                {
                    Instance instance = new Instance
                    {
                        id = Guid.NewGuid().ToString(),
                        info = new { Name = "test" },
                        mesh = instanceIndex,
                        visible = 1,
                    };
                    instances.Add(instance);

                    CallbackGeomListener callbkListener = new CallbackGeomListener();
                    var vertices_str = new List<string>();
                    var normals_str = new List<string>();
                    var vertices = new List<double>();
                    var normals = new List<double>();
                    var indices = new List<int>();
                    foreach (InwOaFragment3 frag in path.Fragments())
                    {
                        InwLTransform3f3 localToWorld = (InwLTransform3f3)(object)frag.GetLocalToWorldMatrix();
                        callbkListener.LCS2WCS = localToWorld;
                        var transfrom = new List<double>();
                        foreach (double item in (Array)localToWorld.Matrix)
                        {
                            transfrom.Add(item);
                        }
                        instance.transform = transfrom.ToArray();
                        // generate the primitives
                        frag.GenerateSimplePrimitives(nwEVertexProperty.eNORMAL, callbkListener);
                        vertices_str.AddRange(callbkListener.vertexes_str);
                        normals_str.AddRange(callbkListener.normals_str);
                        vertices.AddRange(callbkListener.vertexes);
                        normals.AddRange(callbkListener.normals);

                        for (int q = 0; q < callbkListener.vertexes_str.Count && q < callbkListener.normals_str.Count; q++)
                        {
                            for (int i = 0; i < vertices_str.Count && i < normals_str.Count; i++)
                            {
                                if (vertices_str[i] == callbkListener.vertexes_str[q] && normals_str[i] == callbkListener.normals_str[q])
                                {
                                    indices.Add(i);
                                    break;
                                }
                            }
                        }

                    } 

                    Mesh mesh = new Mesh()
                    {
                        vertices = vertices,
                        normals = normals,
                        indices = indices,
                        material = 0,
                    };

                    meshs.Add(mesh);
                    instanceIndex++;
                }

                var json = Kooboo.Json.JsonSerializer.ToJson(modelData);

                var fileInfo = new FileInfo(doc.FileName);
                var dir = fileInfo.Directory.FullName;

                var savePath = Path.Combine(dir, "test.json");
                File.WriteAllText(savePath, json);

            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.ToString());
            }
            return 0;
        }

    }



}