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Fix fence UV generation before geometry merge

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This commit is contained in:
sudhir
2026-04-20 13:12:20 +05:30
parent dfdeca4aae
commit b715e96038
1 changed files with 14 additions and 23 deletions
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packages/core/src/systems/fence/fence-system.tsx
+14 -23
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@@ -20,26 +20,13 @@ function applyFenceUVs(geometry: THREE.BufferGeometry) {
let minX = Number.POSITIVE_INFINITY
let minY = Number.POSITIVE_INFINITY
let minZ = Number.POSITIVE_INFINITY
let maxX = Number.NEGATIVE_INFINITY
let maxY = Number.NEGATIVE_INFINITY
let maxZ = Number.NEGATIVE_INFINITY
for (let index = 0; index < position.count; index += 1) {
const px = position.getX(index)
const py = position.getY(index)
const pz = position.getZ(index)
minX = Math.min(minX, px)
minY = Math.min(minY, py)
minZ = Math.min(minZ, pz)
maxX = Math.max(maxX, px)
maxY = Math.max(maxY, py)
maxZ = Math.max(maxZ, pz)
minX = Math.min(minX, position.getX(index))
minY = Math.min(minY, position.getY(index))
minZ = Math.min(minZ, position.getZ(index))
}
const width = Math.max(maxX - minX, 0.001)
const height = Math.max(maxY - minY, 0.001)
const depth = Math.max(maxZ - minZ, 0.001)
for (let index = 0; index < position.count; index += 1) {
const px = position.getX(index)
const py = position.getY(index)
@@ -52,14 +39,14 @@ function applyFenceUVs(geometry: THREE.BufferGeometry) {
let v = 0
if (ny >= nx && ny >= nz) {
u = (px - minX) / width
v = (pz - minZ) / depth
u = px - minX
v = pz - minZ
} else if (nx >= nz) {
u = (pz - minZ) / depth
v = (py - minY) / height
u = pz - minZ
v = py - minY
} else {
u = (px - minX) / width
v = (py - minY) / height
u = px - minX
v = py - minY
}
uvs[index * 2] = u
@@ -157,13 +144,17 @@ function generateFenceGeometry(fence: FenceNode) {
const geometries = parts.map((part) => {
const geometry = new THREE.BoxGeometry(1, 1, 1)
geometry.scale(part.scale[0], part.scale[1], part.scale[2])
applyFenceUVs(geometry)
geometry.translate(part.position[0], part.position[1], part.position[2])
return geometry
})
const merged = mergeGeometries(geometries, false) ?? new THREE.BufferGeometry()
geometries.forEach((geometry) => geometry.dispose())
applyFenceUVs(merged)
const mergedUv = merged.getAttribute('uv')
if (mergedUv) {
merged.setAttribute('uv2', new THREE.Float32BufferAttribute(Array.from(mergedUv.array), 2))
}
merged.computeVertexNormals()
return merged
}