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import { CodeMapNode } from "../../../codeCharta.model"
import { Vector2 } from "three"
import Rectangle from "./rectangle"
import VerticalStreet, { VerticalOrientation } from "./verticalStreet"
import BoundingBox from "./boundingBox"
import { StreetViewHelper } from "./streetViewHelper"
export enum HorizontalOrientation {
RIGHT,
LEFT
}
export default class HorizontalStreet extends Street {
protected children: BoundingBox[] = []
mapNode: CodeMapNode
protected topRow: BoundingBox[] = []
protected bottomRow: BoundingBox[] = []
orientation: HorizontalOrientation
protected depth: number
constructor(node: CodeMapNode, children: BoundingBox[], orientation: HorizontalOrientation = HorizontalOrientation.RIGHT) {
super(node)
this.children = children
this.orientation = orientation
}
calculateDimension(metricName: string): void {
// calculates street width and height
for (const child of this.children) {
child.calculateDimension(metricName)
}
// splits the children in top and bottom side of the street
this.splitChildrenToRows(this.children)
// note : longest street will be last in the row
this.rearrangeRows()
// TODO Add a comment what the following calculations are doing.
this.metricValue = StreetViewHelper.calculateSize(this.mapNode, metricName)
this.width = Math.max(this.getLength(this.topRow), this.getLength(this.bottomRow))
this.height = this.getMaxHeight(this.topRow) + this.getStreetThickness() + this.getMaxHeight(this.bottomRow) + this.spacer
}
layout(margin: number, origin: Vector2): CodeMapNode[] {
const maxTopHeight = this.getMaxHeight(this.topRow)
const topRowNodes = this.layoutTopRow(origin, maxTopHeight, margin)
const bottomRowNodes = this.layoutBottomRow(origin, maxTopHeight, margin)
const streetNode = this.layoutStreet(origin, maxTopHeight)
return [...topRowNodes, streetNode, ...bottomRowNodes]
}
private layoutTopRow(origin: Vector2, maxTopHeight: number, margin: number): CodeMapNode[] {
const rowOrigin = new Vector2(origin.x, origin.y)
const nodes: CodeMapNode[] = []
Iif (this.orientation === HorizontalOrientation.LEFT) {
const rowWidth = this.getLength(this.topRow)
rowOrigin.x += this.width - rowWidth
}
for (let index = 0; index < this.topRow.length; index++) {
const childOriginX = this.calculateChildOriginX(rowOrigin, index, this.topRow)
const childOriginY = this.calculateStreetOffsetY(rowOrigin, maxTopHeight) - this.topRow[index].height
const childOrigin = new Vector2(childOriginX, childOriginY)
nodes.push(...this.topRow[index].layout(margin, childOrigin))
}
return nodes
}
/**
* Creates the layout for the street node.
* @param origin origin of local coordinate system
* @param maxTopHeight highest node in top row
*/
protected layoutStreet(origin: Vector2, maxTopHeight: number): CodeMapNode {
const streetOffsetY = this.calculateStreetOffsetY(origin, maxTopHeight)
const streetOrigin = new Vector2(origin.x, streetOffsetY)
const streetOverhang = this.calculateStreetOverhang(streetOrigin)
const streetWidth = this.width - streetOverhang
streetOrigin.x += this.orientation === HorizontalOrientation.LEFT ? streetOverhang : 0
this.streetRect = new Rectangle(streetOrigin, streetWidth, this.getStreetThickness())
return {
...this.mapNode,
value: this.metricValue,
rect: this.streetRect,
zOffset: 0
} as CodeMapNode
}
/**
* Creates the layout for the bottomRow.
* @param origin origin of local coordinate system
* @param maxTopHeight highest node in top row
*/
private layoutBottomRow(origin: Vector2, maxTopHeight: number, margin: number): CodeMapNode[] {
const rowOrigin = new Vector2(origin.x, origin.y)
const nodes: CodeMapNode[] = []
Iif (this.orientation === HorizontalOrientation.LEFT) {
const rowWidth = this.getLength(this.bottomRow)
rowOrigin.x += this.width - rowWidth
}
for (let index = 0; index < this.bottomRow.length; index++) {
const childOriginX = this.calculateChildOriginX(rowOrigin, index, this.bottomRow)
const childOriginY = this.calculateStreetOffsetY(rowOrigin, maxTopHeight) + this.getStreetThickness()
const childOrigin = new Vector2(childOriginX, childOriginY)
nodes.push(...this.bottomRow[index].layout(margin, childOrigin))
}
return nodes
}
/**
* Calculates x-coordinate of current child
* @param origin origin of local coordinate system
* @param index index in row of current node
* @param row the node's row
*/
private calculateChildOriginX(origin: Vector2, index: number, row: BoundingBox[]): number {
return origin.x + this.getLengthUntil(row, index)
}
/**
* Calculates y-coordinate of street.
* @param origin origin of local coordinate system
* @param maxTopHeight highest node in topRow
*/
private calculateStreetOffsetY(origin: Vector2, maxTopHeight: number): number {
return origin.y + this.spacer + maxTopHeight
}
/**
* Gets total length of the street.
* @param boxes placed boxes
*/
private getLength(boxes: BoundingBox[]): number {
return this.getLengthUntil(boxes, boxes.length)
}
/**
* Gets length of street from start to end index.
* @param boxes placed boxes
* @param end end index
*/
private getLengthUntil(boxes: BoundingBox[], end: number): number {
let sum = 0
for (let index = 0; index < end; index++) {
sum += boxes[index].width
}
return sum
}
/**
* Divides children nodes into top- and bottomrow
* @param children children of the current node
*/
protected splitChildrenToRows(children: BoundingBox[]): void {
let totalLength = 0
let sum = 0
for (const child of children) {
totalLength += child.width
}
for (const child of children) {
if (sum <= totalLength / 2) {
this.topRow.push(child)
sum += child.width
} else {
if (child instanceof VerticalStreet) {
child.orientation = VerticalOrientation.DOWN
}
this.bottomRow.push(child)
}
}
}
/**
* Arranges rows according to their orientation
*/
protected rearrangeRows(): void {
if (this.orientation === HorizontalOrientation.RIGHT) {
this.bottomRow.reverse()
} else E{
this.topRow.reverse()
}
}
/**
* Gets the highest box of an array of boxes.
* @param boxes boxes to be checked
*/
private getMaxHeight(boxes: BoundingBox[]): number {
return boxes.reduce((max, n) => Math.max(max, n.height), Number.MIN_VALUE)
}
/**
* Calculates overhang of a street.
* @param streetOrigin topleft point of street
*/
protected calculateStreetOverhang(streetOrigin: Vector2): number {
Iif (this.orientation === HorizontalOrientation.LEFT) {
return this.calculateLeftStreetOverhang(streetOrigin)
}
return this.calculateRightStreetOverhang(streetOrigin)
}
/**
* Calculates left hand side overhang of a street.
* @param streetOrigin topleft point of street
*/
private calculateLeftStreetOverhang(streetOrigin: Vector2): number {
const firstTopBox = this.topRow[0]
const firstBottomBox = this.bottomRow[0]
const topOverhang =
firstTopBox instanceof VerticalStreet && firstTopBox.streetRect
? firstTopBox.streetRect.topLeft.x - streetOrigin.x
: this.width - this.getLength(this.topRow)
const bottomOverhang =
firstBottomBox instanceof VerticalStreet && firstBottomBox.streetRect
? firstBottomBox.streetRect.topLeft.x - streetOrigin.x
: this.width - this.getLength(this.bottomRow)
return topOverhang > 0 && bottomOverhang > 0 ? Math.min(topOverhang, bottomOverhang) : 0
}
/**
* Calculates right hand side overhang of a street.
* @param streetOrigin topleft point of street
*/
private calculateRightStreetOverhang(streetOrigin: Vector2): number {
const lastTopBox = this.topRow.at(-1)
const lastBottomBox = this.bottomRow.at(-1)
const streetRightX = streetOrigin.x + this.width
const topOverhang =
lastTopBox instanceof VerticalStreet && lastTopBox.streetRect
? streetRightX - lastTopBox.streetRect.getBottomRight().x
: this.width - this.getLength(this.topRow)
const bottomOverhang =
lastBottomBox instanceof VerticalStreet && lastBottomBox.streetRect
? streetRightX - lastBottomBox.streetRect.getBottomRight().x
: this.width - this.getLength(this.bottomRow)
return topOverhang > 0 && bottomOverhang > 0 ? Math.min(topOverhang, bottomOverhang) : 0
}
}
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