From 541654f571dfa0d861b53e60ddba12a64445e45b Mon Sep 17 00:00:00 2001
From: ChenX <maple6@vip.qq.com>
Date: Fri, 15 May 2020 15:01:56 +0800
Subject: [PATCH] =?UTF-8?q?=E5=91=BD=E4=BB=A4:ExportSTL?=
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---
 src/Add-on/Exports/ExportSTL.ts | 46 +++++++++++++++++++++++++++++++++
 src/Editor/CommandRegister.ts   |  2 ++
 2 files changed, 48 insertions(+)
 create mode 100644 src/Add-on/Exports/ExportSTL.ts

diff --git a/src/Add-on/Exports/ExportSTL.ts b/src/Add-on/Exports/ExportSTL.ts
new file mode 100644
index 000000000..76c9e85e7
--- /dev/null
+++ b/src/Add-on/Exports/ExportSTL.ts
@@ -0,0 +1,46 @@
+import { Box3, Group, Object3D } from 'three';
+import { STLExporter } from 'three/examples/jsm/exporters/STLExporter.js';
+import { ColladaExporter } from 'three/examples/jsm/exporters/ColladaExporter';
+import { app } from '../../ApplicationServices/Application';
+import { FileSystem } from '../../Common/FileSystem';
+import { Entity } from '../../DatabaseServices/Entity/Entity';
+import { PromptStatus } from '../../Editor/PromptResult';
+import { MoveMatrix } from '../../Geometry/GeUtils';
+import { RenderType } from '../../GraphicsSystem/RenderType';
+export class Command_ExportSTL
+{
+    async exec()
+    {
+        let ssRes = await app.Editor.GetSelection({ Filter: { filterTypes: [Entity] } });
+        if (ssRes.Status !== PromptStatus.OK) return;
+        let ents = ssRes.SelectSet.SelectEntityList;
+        let exporter = new STLExporter();
+        let ocsInv = ents[0].SpaceOCSInv;
+        let totalBox = new Box3();
+        ents.reduce((box, en) =>
+        {
+            return box.union(en.GetBoundingBoxInMtx(ocsInv));
+        }, totalBox);
+
+        let min = totalBox.min;
+        let mtx = MoveMatrix(min.negate()).multiply(ocsInv);
+
+        let g = new Group();
+
+        for (let b of ents)
+        {
+            let o: Object3D;
+            o = b.Clone().ApplyMatrix(mtx).GetDrawObjectFromRenderType(RenderType.Physical);
+            g.add(o);
+        }
+
+        g.scale.set(1e-3, 1e-3, 1e-3);
+        g.updateMatrix();
+        g.updateMatrixWorld();
+        let result = exporter.parse(g, { binary: true });
+        FileSystem.WriteFile("webcad.stl", result);
+        // let exporter2 = new ColladaExporter();
+        // let r2 = exporter2.parse(g, () => { }, {});
+        // FileSystem.WriteFile("webcad.dae", r2.data);
+    }
+}
diff --git a/src/Editor/CommandRegister.ts b/src/Editor/CommandRegister.ts
index 044c42d55..0670d6354 100644
--- a/src/Editor/CommandRegister.ts
+++ b/src/Editor/CommandRegister.ts
@@ -178,6 +178,7 @@ import { Command_Conver2Polyline } from "../Add-on/Conver2Polyline";
 import { Command_Curve2VSBox } from "../Add-on/twoD2threeD/Command_Curve2VSBox";
 import { Command_ToggleUI } from "../Add-on/ToggleUI";
 import { Command_ExportObj2 } from "../Geometry/ExportObj2";
+import { Command_ExportSTL } from "../Add-on/Exports/ExportSTL";
 
 export function registerCommand()
 {
@@ -486,6 +487,7 @@ export function registerCommand()
     commandMachine.RegisterCommand("clearrelevance", new DeleteRelevance());
     commandMachine.RegisterCommand("exportobj", new Command_ExportObj());
     commandMachine.RegisterCommand("exportobj2", new Command_ExportObj2());
+    commandMachine.RegisterCommand("ExportSTL", new Command_ExportSTL());
 
     commandMachine.RegisterCommand("updateboardinfos", new UpdateBoardInfos());