功能:导出为gltf

src/Add-on/Command_ExportGLTF.ts

@@ -0,0 +1,77 @@
+
+import { Box3, Group, Object3D, Vector3 } from "three";
+import { GLTFExporter, GLTFExporterOptions } from "three/examples/jsm/exporters/GLTFExporter";
+import { app } from "../ApplicationServices/Application";
+import { FS } from "../Common/FileSystem";
+import { Hole } from "../DatabaseServices/3DSolid/Hole";
+import { Dimension } from "../DatabaseServices/Dimension/Dimension";
+import { Curve } from "../DatabaseServices/Entity/Curve";
+import { Entity } from "../DatabaseServices/Entity/Entity";
+import { Command } from "../Editor/CommandMachine";
+import { PromptStatus } from "../Editor/PromptResult";
+import { VisualSpaceBox } from "../Editor/VisualSpaceBox";
+import { MoveMatrix } from "../Geometry/GeUtils";
+import { RenderType } from "../GraphicsSystem/RenderType";
+
+export async function ExportGLTF(ens: Entity[])
+{
+    let ocsInv = ens[0].SpaceOCSInv;
+    let totalBox = new Box3();
+    ens.reduce((box, en) => box.union(en.GetBoundingBoxInMtx(ocsInv)), totalBox);
+
+    let min = totalBox.getCenter(new Vector3);
+    min.z = totalBox.min.z;
+    let mtx = MoveMatrix(min.negate()).multiply(ocsInv);
+
+    let g = new Group();
+
+    for (let b of ens)
+    {
+        let o: Object3D;
+        o = b.Clone().ApplyMatrix(mtx).GetDrawObjectFromRenderType(RenderType.Physical);
+        g.add(o);
+    }
+
+    g.scale.set(0.1, 0.1, 0.1);
+    g.updateMatrix();
+    g.updateMatrixWorld();
+    var exporter = new GLTFExporter();
+    const options: GLTFExporterOptions = {
+        trs: false,//导出位置、旋转和比例，而不是每个节点的矩阵。默认值为 false
+        onlyVisible: true,//仅导出可见对象。默认为 true。
+        binary: false,//以二进制 (.glb) 格式导出，返回 ArrayBuffer。默认值为 false。
+        // maxTextureSize: params.maxTextureSize //将图像的最大尺寸（宽度和高度）限制为给定值。默认值为无穷大。
+        //animations- Array< AnimationClip >。要包含在导出中的动画列表。
+        //includeCustomExtensions- bool。导出对象属性上定义的自定义 glTF 扩展。默认值为 false。userData.gltfExtensions
+    };
+
+    var result = exporter.parse(g, (gltf) =>
+    {
+        if (options.binary || gltf instanceof Uint8Array)
+            FS.WriteFile(`webcad.glb`, gltf as Uint8Array);
+        else
+            FS.WriteFile(`webcad.gltf`, JSON.stringify(gltf));
+    }, options);
+}
+
+export class Command_ExportGLTF implements Command
+{
+    async exec()
+    {
+        let ssRes = await app.Editor.GetSelection({
+            Msg: "请选择要导出GLTF的实体(导出单位为厘米):",
+            UseSelect: true, Filter: {
+                filterFunction: (obj, ent) =>
+                {
+                    if (ent instanceof Dimension || ent instanceof Curve || ent instanceof VisualSpaceBox || ent instanceof Hole || ent instanceof Text)
+                        return false;
+                    return true;
+                }
+            }
+        });
+
+        if (ssRes.Status !== PromptStatus.OK) return;
+
+        ExportGLTF(ssRes.SelectSet.SelectEntityList);
+    }
+}

src/Common/CommandNames.ts

@@ -247,6 +247,7 @@ export enum CommandNames
     ExportobjMtl = "EXPORTOBJMTL",
     ExportObj2 = "EXPORTOBJ2",
     ExportSTL = "EXPORTSTL",
+    ExportGLTF = "EXPORTGLTF",
     UpdateBoardInfos = "UPDATEBOARDINFOS",
     ToggleUI = "TOGGLEUI",
     BoardReplaceTempate = "BOARDREPLACETEMPLATE",

src/Editor/CommandRegister.ts

@@ -221,6 +221,7 @@ import { Command_ClearCDBrHoleModeling } from "../Add-on/ClearCDBrHoleModeling";
 import { Cmd_LockMaterial, Cmd_UnLockMaterial } from "../Add-on/Cmd_LockMaterial";
 import { Command_RemovePolylineRepeatPos } from "../Add-on/Cmd_RemovePolylineRepeatPos";
 import { SideModelFeedingCommand } from "../Add-on/CommandSideModelFeediing";
+import { Command_ExportGLTF } from "../Add-on/Command_ExportGLTF";
 import { Command_Modeling } from "../Add-on/Command_Modeling";
 import { Command_PickUp2DModelCsgs } from "../Add-on/Command_PickUp2DModelCsgs";
 import { Command_TemplateGroup } from "../Add-on/Command_TemplateGroup";
@@ -805,6 +806,7 @@ export function registerCommand()
     commandMachine.RegisterCommand(CommandNames.ExportobjMtl, new Command_ExportObjAndMtl());
     commandMachine.RegisterCommand(CommandNames.ExportObj, new Command_ExportObj());
     commandMachine.RegisterCommand(CommandNames.ExportSTL, new Command_ExportSTL());
+    commandMachine.RegisterCommand(CommandNames.ExportGLTF, new Command_ExportGLTF());
 
     commandMachine.RegisterCommand(CommandNames.UpdateBoardInfos, new UpdateBoardInfos());