Press n or j to go to the next uncovered block, b, p or k for the previous block.
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import { CodeMapBuilding } from "./codeMapBuilding"
import { Box3, Vector3 } from "three"
import { CodeMapGeometricDescription } from "./codeMapGeometricDescription"
import { ColorConverter } from "../../../util/color/colorConverter"
export interface BoxMeasures {
x: number
y: number
z: number
width: number
height: number
depth: number
}
export interface SurfaceInformation {
node: Node
surfaceStartIndex: number
minPos: { z: number; x: number }
maxPos: { z: number; x: number }
}
export interface IntermediateVertexData {
positions: Float32Array
normals: Float32Array
uvs: Float32Array
colors: Float32Array
indices: Uint32Array
ids: Float32Array
deltas: Float32Array
isHeight: Float32Array
}
enum sides {
left = 0,
right = 1,
bottom = 2,
top = 3,
back = 4,
front = 5
}
// Vector 3: x, y, z
const normals = [
[-1, 0, 0],
[1, 0, 0],
[0, -1, 0],
[0, 1, 0],
[0, 0, -1],
[0, 0, 1]
]
const uvArray = [
// Left x, y
1, 0, 1, 1, 0, 1, 0, 0,
// Right x, y
0, 0, 0, 1, 1, 1, 1, 0,
// Bottom x, y
0, 1, 1, 1, 1, 0, 0, 0,
// Top x, y
0, 1, 1, 1, 1, 0, 0, 0,
// Back x, y
0, 0, 1, 0, 1, 1, 0, 1,
// Front x, y
1, 0, 0, 0, 0, 1, 1, 1
]
const numberSides = 6
const verticesPerSide = 4
const threeDimensions = 3
export function addBoxToVertexData(
data: IntermediateVertexData,
node: Node,
measures: BoxMeasures,
color: string,
subGeomIndex: number,
desc: CodeMapGeometricDescription,
delta: number
) {
desc.add(
new CodeMapBuilding(
subGeomIndex,
new Box3(
new Vector3(measures.x, measures.y, measures.z),
new Vector3(measures.x + measures.width, measures.y + measures.height, measures.z + measures.depth)
),
node,
color
)
)
data.uvs.set(uvArray, subGeomIndex * uvArray.length)
setPositions(data.positions, measures, subGeomIndex)
setVerticesAndFaces(node, measures, color, delta, subGeomIndex, data)
}
function setPositions(positions: Float32Array, measures: BoxMeasures, index: number) {
const { x: minPosX, y: minPosY, z: minPosZ, width, height, depth } = measures
const maxPosX = minPosX + width
const maxPosY = minPosY + height
const maxPosZ = minPosZ + depth
let positionIndex = index * verticesPerSide * numberSides * threeDimensions
// Left
// Bottom left
positions[positionIndex++] = minPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = minPosZ
// Top left
positions[positionIndex++] = minPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = minPosZ
// Top right
positions[positionIndex++] = minPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = maxPosZ
// Bottom right
positions[positionIndex++] = minPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = maxPosZ
// Right
// Bottom left
positions[positionIndex++] = maxPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = minPosZ
// Top left
positions[positionIndex++] = maxPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = minPosZ
// Top right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = maxPosZ
// Bottom right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = maxPosZ
// Bottom
// Bottom left
positions[positionIndex++] = minPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = minPosZ
// Top left
positions[positionIndex++] = minPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = maxPosZ
// Top right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = maxPosZ
// Bottom right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = minPosZ
// Top
// Bottom left
positions[positionIndex++] = minPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = minPosZ
// Top left
positions[positionIndex++] = minPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = maxPosZ
// Top right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = maxPosZ
// Bottom right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = minPosZ
// Back
// Bottom left
positions[positionIndex++] = maxPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = maxPosZ
// Top left
positions[positionIndex++] = minPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = maxPosZ
// Top right
positions[positionIndex++] = minPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = maxPosZ
// Bottom right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = maxPosZ
// Front
// Bottom left
positions[positionIndex++] = maxPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = minPosZ
// Top left
positions[positionIndex++] = minPosX
positions[positionIndex++] = minPosY
positions[positionIndex++] = minPosZ
// Top right
positions[positionIndex++] = minPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = minPosZ
// Bottom right
positions[positionIndex++] = maxPosX
positions[positionIndex++] = maxPosY
positions[positionIndex++] = minPosZ
}
function isTopSide(side: number, node: Node) {
if (!node.isLeaf || side === sides.bottom) {
return [0, 0, 0, 0]
}
if (side === sides.top) {
return [1, 1, 1, 1]
}
if (side <= sides.right) {
return [0, 1, 1, 0]
}
return [0, 0, 1, 1]
}
function setVerticesAndFaces(
node: Node,
measures: BoxMeasures,
color: string,
delta: number,
subGeomIndex: number,
data: IntermediateVertexData
) {
const { y: minPosY, height } = measures
const maxPosY = minPosY + height
const deltaRelativeToHeight = delta / (maxPosY - minPosY)
let index = subGeomIndex * numberSides * verticesPerSide
let vector3Index = index * threeDimensions
let surfaceStartIndex = subGeomIndex * numberSides * numberSides
const colors = ColorConverter.getVector3Array(color)
for (let side = 0; side < numberSides; side++) {
const topSides = isTopSide(side, node)
const normal = normals[side]
const indexBottomLeft = index
const indexTopLeft = index + 1
const indexTopRight = index + 2
const indexBottomRight = index + 3
data.isHeight.set(topSides, index)
for (const end = index + verticesPerSide; index < end; index++) {
data.normals.set(normal, vector3Index)
data.colors.set(colors, vector3Index)
vector3Index += threeDimensions
data.ids[index] = subGeomIndex
data.deltas[index] = deltaRelativeToHeight
}
const dimension = Math.floor(side / 2)
const positiveFacing = normal[dimension] === 1
if (positiveFacing) {
data.indices.set(
[indexBottomLeft, indexTopLeft, indexTopRight, indexBottomLeft, indexTopRight, indexBottomRight],
surfaceStartIndex
)
} else {
data.indices.set(
[indexBottomLeft, indexTopRight, indexTopLeft, indexBottomLeft, indexBottomRight, indexTopRight],
surfaceStartIndex
)
}
surfaceStartIndex += numberSides
}
}
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