manifold to dxf

const start = async () => { const box = await bitbybit.manifold.manifold.shapes.cube({ center: true, size: 1 }); const rectangle = await bitbybit.manifold.manifold.transforms.scale3D({ manifold: box, vector: [10, 1, 10] }); const cylinder = await bitbybit.manifold.manifold.shapes.cylinder({ height: 2, radiusLow: 1, radiusHigh: 1, circularSegments: 50, center: true }); const rotated_cylinder = await bitbybit.manifold.manifold.transforms.rotate({ manifold: cylinder, vector: [90, 0, 0] }); const rectangle_subtraction = await bitbybit.manifold.manifold.booleans.subtract({ manifold1: rectangle, manifold2: rotated_cylinder }); // Rotated into X-Y plane for cross-section const rotated_subtraction = await bitbybit.manifold.manifold.transforms.rotate({ manifold: rectangle_subtraction, vector: [90, 0, 0] }); const plane = await bitbybit.manifold.manifold.operations.slice({ manifold: rotated_subtraction, height: 0 }); const polygons = await bitbybit.manifold.crossSection.crossSectionToPolygons({ crossSection: plane }); // Likely area to improve using vectors rather than nested for loops const jscadPolygonsPromise = polygons.map(polygonPoints => { return bitbybit.jscad.polygon.createFromPoints({ points: polygonPoints.map(point => { return [point[0], point[1], 0] }) }); }); const jscadPolygons = await Promise.all(jscadPolygonsPromise); bitbybit.draw.drawAnyAsync({ entity: [rotated_subtraction] }); bitbybit.draw.drawAnyAsync({ entity: [plane] }); const gridOptions = new Bit.Inputs.Draw.SceneDrawGridMeshDto(); bitbybit.draw.drawGridMesh(gridOptions); createGUI(jscadPolygons) } async function createGUI(jscadPolygons) { var advancedTexture = BABYLON.GUI.AdvancedDynamicTexture.CreateFullscreenUI("UI"); var panel = new BABYLON.GUI.StackPanel(); // panel.width = "800px"; // panel.background = "#00000055"; // panel.paddingLeftInPixels = 40; // panel.paddingRightInPixels = 40; panel.horizontalAlignment = BABYLON.GUI.Control.HORIZONTAL_ALIGNMENT_LEFT; panel.verticalAlignment = BABYLON.GUI.Control.VERTICAL_ALIGNMENT_BOTTOM panel.adaptHeightToChildren = true; advancedTexture.addControl(panel); var button1 = BABYLON.GUI.Button.CreateSimpleButton('download', "Download DXF"); button1.width = "350px" button1.thickness = 0; button1.height = "120px"; button1.paddingTop = 30; button1.color = "white"; button1.fontSize = 30; button1.cornerRadius = 10; button1.background = "black"; button1.onPointerUpObservable.add(() => { downloadDXF(jscadPolygons); }); panel.addControl(button1); } async function downloadDXF(jscadPolygons) { bitbybit.jscad.downloadGeometryDxf({ geometry: jscadPolygons, fileName: "dxf_from_manifold_slice", options: undefined }); } start();