67 lines
2.5 KiB
TypeScript
67 lines
2.5 KiB
TypeScript
import { type CeilingNode, useRegistry } from '@pascal-app/core'
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import { useRef } from 'react'
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import { float, mix, positionWorld, smoothstep } from 'three/tsl'
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import { BackSide, FrontSide, type Mesh, MeshBasicNodeMaterial } from 'three/webgpu'
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import { useNodeEvents } from '../../../hooks/use-node-events'
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import { NodeRenderer } from '../node-renderer'
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// TSL material that renders differently based on face direction:
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// - Back face (looking up at ceiling from below): solid
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// - Front face (looking down at ceiling from above): 30% opacity
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const ceilingTopMaterial = new MeshBasicNodeMaterial({
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color: 0xb5a78d,
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transparent: true,
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depthWrite: false,
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side: FrontSide,
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// Disabled as we only show ceiling grid when needed
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// alphaTestNode: float(0.4), // Discard pixels with alpha below 0.4 to create grid lines and not affect depth buffer
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})
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const ceilingBottomMaterial = new MeshBasicNodeMaterial({
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color: 0x999999,
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transparent: true,
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side: BackSide,
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})
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// Create grid pattern based on local position
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const gridScale = 5 // Grid cells per meter (1 = 1m grid)
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const gridX = positionWorld.x.mul(gridScale).fract()
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const gridY = positionWorld.z.mul(gridScale).fract()
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// Create grid lines - they are at 0 and 1
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const lineWidth = 0.05 // Width of grid lines (0-1 range within cell)
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// Create visible lines at edges (near 0 and near 1)
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const lineX = smoothstep(lineWidth, 0, gridX).add(smoothstep(1.0 - lineWidth, 1.0, gridX))
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const lineY = smoothstep(lineWidth, 0, gridY).add(smoothstep(1.0 - lineWidth, 1.0, gridY))
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// Combine: if either X or Y is a line, show the line
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const gridPattern = lineX.max(lineY)
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// Grid lines at 0.6 opacity, spaces at 0.2 opacity
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const gridOpacity = mix(float(0.2), float(0.6), gridPattern)
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// faceDirection is 1.0 for front face, -1.0 for back face
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// Front face (top, looking down): grid pattern, Back face (bottom, looking up): solid
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ceilingTopMaterial.opacityNode = gridOpacity
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export const CeilingRenderer = ({ node }: { node: CeilingNode }) => {
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const ref = useRef<Mesh>(null!)
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useRegistry(node.id, 'ceiling', ref)
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const handlers = useNodeEvents(node, 'ceiling')
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return (
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<mesh ref={ref} material={ceilingBottomMaterial}>
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{/* CeilingSystem will replace this geometry in the next frame */}
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<boxGeometry args={[0, 0, 0]} />
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<mesh name="ceiling-grid" material={ceilingTopMaterial} {...handlers} visible={false} scale={0}>
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<boxGeometry args={[0, 0, 0]} />
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</mesh>
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{node.children.map((childId) => (
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<NodeRenderer key={childId} nodeId={childId} />
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))}
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</mesh>
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)
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}
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