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import { BoxGeometry, Group, Mesh } from "three"
export class ViewCubemeshGenerator {
static buildCube(edgeToFaceRatio: number) {
const middleEdgeSize = 1 / edgeToFaceRatio
const verticeSize = (1 - middleEdgeSize) / 2
const cubeTopEdgeGeometry = new BoxGeometry(middleEdgeSize, verticeSize, verticeSize)
const cubeSideEdgeGeometry = new BoxGeometry(verticeSize, middleEdgeSize + verticeSize, verticeSize)
const cubeVerticeGeometry = new BoxGeometry(verticeSize, verticeSize, verticeSize)
const cubeTopFaceGeometry = new BoxGeometry(middleEdgeSize, middleEdgeSize, verticeSize)
const cubeSideFaceGeometry = new BoxGeometry(middleEdgeSize, middleEdgeSize + verticeSize, verticeSize)
return ViewCubemeshGenerator.newBuildCubeGroup(
cubeTopEdgeGeometry,
cubeSideEdgeGeometry,
cubeVerticeGeometry,
cubeTopFaceGeometry,
cubeSideFaceGeometry
)
}
private static newBuildCubeGroup(
cubeTopEdgeGeometry: BoxGeometry,
cubeSideEdgeGeometry: BoxGeometry,
cubeVerticeGeometry: BoxGeometry,
cubeTopFaceGeometry: BoxGeometry,
cubeSideFaceGeometry: BoxGeometry
) {
const group = new Group()
const {
group: cubeTopFace,
frontLeft: topFrontLeft,
frontCenter: topFrontCenter,
frontRight: topFrontRight,
middleLeft: topMiddleLeft,
middleCenter: topMiddleCenter,
middleRight: topMiddleRight,
backLeft: topBackLeft,
backCenter: topbackCenter,
backRight: topBackRight
} = ViewCubemeshGenerator.buildCubeTopFace(cubeTopEdgeGeometry, cubeVerticeGeometry, cubeTopFaceGeometry)
group.add(cubeTopFace)
const {
group: cubeSides,
frontLeftEdge: sideFrontLeft,
frontCenterFace: sideFrontCenter,
frontRightEdge: sideFrontRight,
middleLeftFace: sideMiddleLeft,
middleRightFace: sideMiddleRight,
backLeftEdge: sideBackLeft,
backCenterFace: sideBackCenter,
backRightEdge: sideBackRight
} = ViewCubemeshGenerator.buildCubeSides(cubeSideEdgeGeometry, cubeSideFaceGeometry)
group.add(cubeSides)
return {
group,
top: {
front: {
left: topFrontLeft,
center: topFrontCenter,
right: topFrontRight
},
middle: {
left: topMiddleLeft,
center: topMiddleCenter,
right: topMiddleRight
},
back: {
left: topBackLeft,
center: topbackCenter,
right: topBackRight
}
},
sides: {
front: {
left: sideFrontLeft,
center: sideFrontCenter,
right: sideFrontRight
},
middle: {
left: sideMiddleLeft,
right: sideMiddleRight
},
back: {
left: sideBackLeft,
center: sideBackCenter,
right: sideBackRight
}
}
}
}
private static buildCubeTopFace(cubeEdgeGeometry: BoxGeometry, cubeVerticeGeometry: BoxGeometry, cubeFaceGeometry: BoxGeometry) {
const frontLeftVertice = new Mesh(cubeVerticeGeometry, getBaseMaterialVertices())
const frontCenterEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialEdge())
const frontRightVertice = new Mesh(cubeVerticeGeometry, getBaseMaterialVertices())
const middleLeftEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialEdge())
const middleCenterFace = new Mesh(cubeFaceGeometry, getBaseMaterialFace())
const middleRightEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialFace())
const backLeftVertice = new Mesh(cubeVerticeGeometry, getBaseMaterialVertices())
const backCenterEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialEdge())
const backRightVertice = new Mesh(cubeVerticeGeometry, getBaseMaterialVertices())
const offset = cubeFaceGeometry.parameters.height / 2 + cubeVerticeGeometry.parameters.height / 2
frontLeftVertice.position.x -= offset
frontLeftVertice.position.y -= offset
frontCenterEdge.position.y -= offset
frontRightVertice.position.x += offset
frontRightVertice.position.y -= offset
middleLeftEdge.position.x -= offset
middleLeftEdge.rotation.z = Math.PI / 2
middleRightEdge.position.x += offset
middleRightEdge.rotation.z = Math.PI / 2
backLeftVertice.position.x -= offset
backLeftVertice.position.y += offset
backCenterEdge.position.y += offset
backRightVertice.position.x += offset
backRightVertice.position.y += offset
const group = new Group()
group.rotation.x = Math.PI / 2
group.position.y += offset
group.add(frontLeftVertice)
group.add(frontCenterEdge)
group.add(frontRightVertice)
group.add(middleLeftEdge)
group.add(middleCenterFace)
group.add(middleRightEdge)
group.add(backLeftVertice)
group.add(backCenterEdge)
group.add(backRightVertice)
return {
group,
frontLeft: frontLeftVertice,
frontCenter: frontCenterEdge,
frontRight: frontRightVertice,
middleLeft: middleLeftEdge,
middleCenter: middleCenterFace,
middleRight: middleRightEdge,
backLeft: backLeftVertice,
backCenter: backCenterEdge,
backRight: backRightVertice
}
}
private static buildCubeSides(cubeEdgeGeometry: BoxGeometry, cubeFaceGeometry: BoxGeometry) {
const frontLeftEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialEdge())
const frontCenterFace = new Mesh(cubeFaceGeometry, getBaseMaterialFace())
const frontRightEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialEdge())
const middleLeftFace = new Mesh(cubeFaceGeometry, getBaseMaterialFace())
const middleRightFace = new Mesh(cubeFaceGeometry, getBaseMaterialFace())
const backLeftEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialEdge())
const backCenterFace = new Mesh(cubeFaceGeometry, getBaseMaterialFace())
const backRightEdge = new Mesh(cubeEdgeGeometry, getBaseMaterialEdge())
const offset = cubeFaceGeometry.parameters.width / 2 + cubeEdgeGeometry.parameters.width / 2
const verticalOffset = cubeEdgeGeometry.parameters.width / 2
frontLeftEdge.position.x -= offset
frontLeftEdge.position.z += offset
frontCenterFace.position.z += offset
frontRightEdge.position.x += offset
frontRightEdge.position.z += offset
middleLeftFace.position.x -= offset
middleLeftFace.rotation.y = Math.PI / 2
middleRightFace.position.x += offset
middleRightFace.rotation.y = Math.PI / 2
backLeftEdge.position.x -= offset
backLeftEdge.position.z -= offset
backCenterFace.position.z -= offset
backRightEdge.position.x += offset
backRightEdge.position.z -= offset
const group = new Group()
group.position.y -= verticalOffset
group.add(frontLeftEdge)
group.add(frontCenterFace)
group.add(frontRightEdge)
group.add(middleLeftFace)
group.add(middleRightFace)
group.add(backLeftEdge)
group.add(backCenterFace)
group.add(backRightEdge)
return {
group,
frontLeftEdge,
frontCenterFace,
frontRightEdge,
middleLeftFace,
middleRightFace,
backLeftEdge,
backCenterFace,
backRightEdge
}
}
}
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