TypeScript Example

let myWidth = 5; let myHeight = 8; let myThickness = 3; const ptLightOpt = new Bit.Inputs.BabylonScene.PointLightDto(); ptLightOpt.position = [myThickness * 2, myHeight * 0.5, myWidth]; ptLightOpt.intensity = 1000; ptLightOpt.radius = 0.1; ptLightOpt.shadowMinZ = 0.1; bitbybit.babylon.scene.drawPointLight(ptLightOpt); ptLightOpt.position = [-myThickness * 2, myHeight, -myWidth]; bitbybit.babylon.scene.drawPointLight(ptLightOpt); start(myWidth, myHeight, myThickness); async function start(width: number, height: number, thickness: number) { type Pt3 = Bit.Inputs.Base.Point3; type Vec3 = Bit.Inputs.Base.Point3; type Pt2 = Bit.Inputs.Base.Point2; type Vec2 = Bit.Inputs.Base.Point2; const aPnt1: Pt3 = [-width / 2, 0, 0]; const aPnt2: Pt3 = [-width / 2, 0, -thickness / 4]; const aPnt3: Pt3 = [0, 0, -thickness / 2]; const aPnt4: Pt3 = [width / 2, 0, -thickness / 4]; const aPnt5: Pt3 = [width / 2, 0, 0]; const anArc = await bitbybit.occt.shapes.edge.arcThroughThreePoints({ start: aPnt2, middle: aPnt3, end: aPnt4 }); const edge1 = await bitbybit.occt.shapes.edge.line({ start: aPnt1, end: aPnt2 }); const edge2 = await bitbybit.occt.shapes.edge.line({ start: aPnt4, end: aPnt5 }); const firstHalfWire = await bitbybit.occt.shapes.wire.combineEdgesAndWiresIntoAWire({ shapes: [edge1, anArc, edge2] }); const direction: Vec3 = [1, 0, 0]; const origin: Pt3 = [0, 0, 0]; const secondHalfWire = await bitbybit.occt.transforms.mirror({ direction, origin, shape: firstHalfWire }); const wire = await bitbybit.occt.shapes.wire.combineEdgesAndWiresIntoAWire({ shapes: [firstHalfWire, secondHalfWire] }); const aPrismVec: Vec3 = [0, height, 0]; const face = await bitbybit.occt.shapes.face.createFaceFromWire({ shape: wire, planar: true }); const extruded = await bitbybit.occt.operations.extrude({ shape: face, direction: aPrismVec }); const appliedFillets = await bitbybit.occt.fillets.filletEdges({ shape: extruded, radius: thickness / 12 }); const neckLocation: Pt3 = [0, height, 0]; const neckRadius = thickness / 4.; const neckHeight = height / 10.; const neckAxis: Vec3 = [0, 1, 0]; const neck = await bitbybit.occt.shapes.solid.createCylinder({ radius: neckRadius, height: neckHeight, center: neckLocation, direction: neckAxis }) const unioned = await bitbybit.occt.booleans.union({ shapes: [appliedFillets, neck], keepEdges: false }); const faceToRemove = await bitbybit.occt.shapes.face.getFace({ shape: unioned, index: 27 }); const thickOptions = new Bit.Inputs.OCCT.ThickSolidByJoinDto(unioned, [faceToRemove], -thickness / 50) const thick = await bitbybit.occt.operations.makeThickSolidByJoin(thickOptions); const geom = bitbybit.occt.geom; // Threading : Create Surfaces const aCyl1 = await geom.surfaces.cylindricalSurface({ direction: neckAxis, radius: neckRadius * 0.99, center: neckLocation }); const aCyl2 = await geom.surfaces.cylindricalSurface({ direction: neckAxis, radius: neckRadius * 1.05, center: neckLocation }); const aPnt: Pt2 = [2. * Math.PI, neckHeight / 2.]; const aDir: Vec2 = [2. * Math.PI, neckHeight / 4.]; const aMajor = 2. * Math.PI; const aMinor = neckHeight / 10.; const anEllipse1 = await geom.curves.geom2dEllipse({ center: aPnt, direction: aDir, radiusMinor: aMinor, radiusMajor: aMajor, sense: true }); const anEllipse2 = await geom.curves.geom2dEllipse({ center: aPnt, direction: aDir, radiusMinor: aMinor / 4, radiusMajor: aMajor, sense: true }); const anArc1 = await geom.curves.geom2dTrimmedCurve({ shape: anEllipse1, u1: 0, u2: Math.PI, sense: true, adjustPeriodic: true }); const anArc2 = await geom.curves.geom2dTrimmedCurve({ shape: anEllipse2, u1: 0, u2: Math.PI, sense: true, adjustPeriodic: true }); const anEllipsePnt1 = await geom.curves.get2dPointFrom2dCurveOnParam({ shape: anEllipse1, param: 0 }); const anEllipsePnt2 = await geom.curves.get2dPointFrom2dCurveOnParam({ shape: anEllipse1, param: Math.PI }); const aSegment = await geom.curves.geom2dSegment({ start: anEllipsePnt1, end: anEllipsePnt2 }); const anEdge1OnSurf1 = await bitbybit.occt.shapes.edge.makeEdgeFromGeom2dCurveAndSurface({ curve: anArc1, surface: aCyl1 }); const anEdge2OnSurf1 = await bitbybit.occt.shapes.edge.makeEdgeFromGeom2dCurveAndSurface({ curve: aSegment, surface: aCyl1 }); const anEdge1OnSurf2 = await bitbybit.occt.shapes.edge.makeEdgeFromGeom2dCurveAndSurface({ curve: anArc2, surface: aCyl2 }); const anEdge2OnSurf2 = await bitbybit.occt.shapes.edge.makeEdgeFromGeom2dCurveAndSurface({ curve: aSegment, surface: aCyl2 }); const threadingWire1 = await bitbybit.occt.shapes.wire.combineEdgesAndWiresIntoAWire({ shapes: [anEdge1OnSurf1, anEdge2OnSurf1] }); const threadingWire2 = await bitbybit.occt.shapes.wire.combineEdgesAndWiresIntoAWire({ shapes: [anEdge1OnSurf2, anEdge2OnSurf2] }) const loft = await bitbybit.occt.operations.loft({ shapes: [threadingWire1, threadingWire2], makeSolid: true }) const union = await bitbybit.occt.booleans.union({ shapes: [loft, thick], keepEdges: false }); const di = new Bit.Inputs.Draw.DrawOcctShapeOptions(); di.edgeColour = '#000000'; di.edgeOpacity = 0.5; di.faceColour = '#ff00ff'; di.precision = 0.001; di.faceOpacity = 1; di.edgeWidth = 1; await bitbybit.draw.drawAnyAsync({ entity: union, options: di }); }