85 lines
2.6 KiB
TypeScript
85 lines
2.6 KiB
TypeScript
'use client'
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import { useEffect, useMemo } from 'react'
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import * as THREE from 'three'
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import { INVALID_GHOST_COLOR } from '../shared/ghost-materials'
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import { buildGutterGeometry } from './geometry'
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import type { GutterNode } from './schema'
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/**
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* Translucent ghost of a gutter — built from the same `buildGutterGeometry`
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* the renderer commits, so the shape on screen during placement is the
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* shape that lands on click.
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*
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* No internal transform wrapper. Callers (placement tool + move tool)
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* mirror the GutterRenderer's transform chain around this component
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* (roof → segment → snap), so the ghost shares one bulletproof chain
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* with the committed mesh instead of a flattened-yaw shortcut that can
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* drift in edge cases.
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*
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* FrontSide matches the renderer; DoubleSide would render the inside
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* of the trough walls and visually thicken the ghost relative to the
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* placed gutter.
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*/
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const GutterPreview = ({ node, invalid }: { node: GutterNode; invalid?: boolean }) => {
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// biome-ignore lint/correctness/useExhaustiveDependencies: deps deliberately list the build inputs; depending on the whole object would rebuild on unrelated field changes.
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const geometry = useMemo(
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() => buildGutterGeometry(node),
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[
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node.length,
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node.size,
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node.thickness,
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node.profile,
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node.endCapLeft,
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node.endCapRight,
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node.hangerStyle,
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node.hangerSpacing,
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JSON.stringify(node.outlets),
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],
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)
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const material = useMemo(
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() =>
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new THREE.MeshStandardMaterial({
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color: invalid ? INVALID_GHOST_COLOR : 0xff_ff_ff,
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emissive: invalid ? INVALID_GHOST_COLOR : 0xff_ff_ff,
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emissiveIntensity: 0.12,
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roughness: 0.7,
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metalness: 0.2,
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transparent: true,
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opacity: invalid ? 0.4 : 0.55,
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depthWrite: false,
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side: THREE.FrontSide,
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}),
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[invalid],
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)
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const edgesGeometry = useMemo(() => new THREE.EdgesGeometry(geometry, 25), [geometry])
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useEffect(
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() => () => {
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geometry.dispose()
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edgesGeometry.dispose()
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material.dispose()
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},
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[geometry, edgesGeometry, material],
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)
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return (
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<>
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<mesh
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geometry={geometry}
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material={material}
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// See box-vent preview note — never let the preview swallow
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// roof events meant for the placement tool's hit-tester.
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raycast={() => {}}
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/>
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<lineSegments geometry={edgesGeometry} renderOrder={1000}>
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<lineBasicMaterial color={0x6c_a3_ff} depthTest={false} opacity={0.9} transparent />
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</lineSegments>
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</>
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)
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}
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export default GutterPreview
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