ShapeTubeExtrudePlugin

Interactive Extrusion Example — Generators Example — Source Code — API Reference

Provides interactive extrusion of flat/planar geometry along a curve path. Select a flat mesh in the scene, click "Extrude Circle Tube", and the plugin auto-detects the planar axis, extracts a 2D shape from the vertices, and extrudes it along a circle curve using the tubeShape geometry generator.

Features:

• Extrude any flat/planar geometry along a circle curve
• Auto-detect the planar axis (X, Y, or Z) and extract a 2D shape from vertices
• Configurable shape/tube segments, shape scale, and material splits
• Multi-material support via configurable split positions
• Static ExtrudeShape helper for programmatic extrusion
• Static ConvertGeometryToFlatShape utility for extracting 2D shapes from 3D geometry

Interactive Usage

import {ThreeViewer, GeometryGeneratorPlugin, ShapeTubeExtrudePlugin} from 'threepipe'

const viewer = new ThreeViewer({...})
viewer.addPluginSync(GeometryGeneratorPlugin)
viewer.addPluginSync(ShapeTubeExtrudePlugin) // auto-adds PickingPlugin dependency

// Add flat shapes to the scene, then select one and click
// "Extrude Circle Tube" in the plugin UI panel.

Programmatic Usage

import {ShapeTubeExtrudePlugin, EllipseCurve3D, Shape} from 'threepipe'

// Create a custom shape
const shape = new Shape()
shape.moveTo(-0.3, -0.15)
shape.lineTo(0.3, -0.15)
shape.lineTo(0.3, 0.15)
shape.lineTo(-0.3, 0.15)
shape.closePath()

// Extrude along a circle
const curve = new EllipseCurve3D(0, 0, 1, 1, 0, 2 * Math.PI, false, 0)
const mesh = ShapeTubeExtrudePlugin.ExtrudeShape(viewer, shape, curve, 16, 64)
viewer.scene.addObject(mesh)

Check the interactive example or the generators example for full demos.