Multi Axis Parametric Joint

// joint parameters const jointTotalHeight = 14; const jointWallThickness = 0.3; const jointEdgeFilletRadiusPercentage = 0; // joint hole parameters const jointRadiusOfTheHole = 0.83; const jointHoleDepth = 2; // joint rotation parameters const xDivisions = 1; const zDivisions = 1; // output parameters const splitInHalfFor3DPrint = true; const saveStepFile = false; const whiteColour = '#ffffff'; const faceColour = '#ff2966'; const edgeColour = '#297fff'; const doubleHeight = jointTotalHeight * 3; bitbybit.babylon.scene.drawPointLight({ position: [doubleHeight, doubleHeight, doubleHeight], intensity: 3000, radius: 0, diffuse: whiteColour, specular: whiteColour }); start(); async function start() { const cylinder = await makeCylinder(jointWallThickness, jointRadiusOfTheHole, jointTotalHeight / 2, jointHoleDepth, (jointWallThickness / 2) * (jointEdgeFilletRadiusPercentage / 100)); const rotatedShapes = await rotateInPositions(cylinder, xDivisions, zDivisions); const union = await bitbybit.occt.booleans.union({ shapes: rotatedShapes, keepEdges: false }); let resultShape = union; if (splitInHalfFor3DPrint) { const box = await bitbybit.occt.shapes.solid.createBox({ width: doubleHeight, height: doubleHeight, length: doubleHeight, center: [0, 0, -doubleHeight / 2] }); const half = await bitbybit.occt.booleans.difference({ shape: union, shapes: [box], keepEdges: false }); resultShape = half; } const drawOptions = new Bit.Inputs.Draw.DrawOcctShapeOptions(); drawOptions.faceColour = faceColour; drawOptions.edgeColour = edgeColour; drawOptions.edgeOpacity = 0.3; drawOptions.edgeWidth = 5; bitbybit.draw.drawAnyAsync({ entity: resultShape, options: drawOptions }); if (saveStepFile) { bitbybit.occt.io.saveShapeSTEP({ shape: resultShape, fileName: 'bitbybit-dev.step', adjustYtoZ: true }) } } async function makeCylinder(thickness: number, radiusHole: number, height: number, holeDepth: number, roundRadius: number) { const cylinderBase = await bitbybit.occt.shapes.solid.createCylinder({ center: [0, 0, 0], height, radius: radiusHole + thickness, direction: [0, 1, 0] }); const cylinderHole = await bitbybit.occt.shapes.solid.createCylinder({ center: [0, holeDepth, 0], height, radius: radiusHole, direction: [0, 1, 0] }); const cyl = await bitbybit.occt.booleans.difference({ shape: cylinderBase, shapes: [cylinderHole], keepEdges: false }); const mirrored = await bitbybit.occt.transforms.mirror({ shape: cyl, direction: [0, 0, 1], origin: [0, 0, 0] }); const finalCyl = await bitbybit.occt.booleans.union({ shapes: [cyl, mirrored], keepEdges: false }); let result = finalCyl let finalRoundRadius; if (roundRadius * 2 >= thickness) { finalRoundRadius = roundRadius - 0.0001; } else { finalRoundRadius = roundRadius; } if (finalRoundRadius !== 0) { result = await bitbybit.occt.fillets.filletEdges({ shape: finalCyl, radius: finalRoundRadius, indexes: [1, 3, 4, 5] }); } return result; } async function rotateInPositions(shape: any, numOnXAxis: number, numOnZAxis: number) { const shapes = []; for (let i = -90 + (90 / numOnXAxis); i < 90; i += 90 / numOnXAxis) { const rotation = new Bit.Inputs.OCCT.RotateDto(shape, [1, 0, 0], i); const rotatedShapeX = await bitbybit.occt.transforms.rotate(rotation); for (let j = -90; j < 90; j += 90 / numOnZAxis) { const rotationY = new Bit.Inputs.OCCT.RotateDto(rotatedShapeX, [0, 0, 1], j); const rotatedShapeXY = await bitbybit.occt.transforms.rotate(rotationY); shapes.push(rotatedShapeXY); } } const rotation = new Bit.Inputs.OCCT.RotateDto(shape, [1, 0, 0], 90); const rotatedShapeToY = await bitbybit.occt.transforms.rotate(rotation); shapes.push(rotatedShapeToY); return shapes; }