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import { LayoutAlgorithm, Node, CcState } from "../../codeCharta.model"
import { ThreeMapControlsService } from "./threeViewer/threeMapControls.service"
import { ThreeCameraService } from "./threeViewer/threeCamera.service"
import { ThreeSceneService } from "./threeViewer/threeSceneService"
import { ColorConverter } from "../../util/color/colorConverter"
import { Injectable } from "@angular/core"
import { treeMapSize } from "../../util/algorithm/treeMapLayout/treeMapHelper"
import { State } from "@ngrx/store"
import { defaultMapColors } from "../../state/store/appSettings/mapColors/mapColors.reducer"
interface InternalLabel {
sprite: Sprite
line: Line | null
heightValue: number
lineCount: number
node: Node
}
@Injectable({ providedIn: "root" })
export class CodeMapLabelService {
private labels: InternalLabel[]
private mapLabelColors = defaultMapColors.labelColorAndAlpha
private LABEL_COLOR_RGB = ColorConverter.convertHexToRgba(this.mapLabelColors.rgb)
private LABEL_WIDTH_DIVISOR = 2100 // empirically gathered
private LABEL_HEIGHT_DIVISOR = 35 // empirically gathered
private LABEL_CORNER_RADIUS = 40 //empirically gathered
private LABEL_SCALE_FACTOR = 0.7 //empirically gathered
private LABEL_HEIGHT_COEFFICIENT = 15 / 4 //empirically gathered, needed to prevent label collision with building with higher margin, TODO scale with margin factor once its available
private LABEL_HEIGHT_POSITION = 60
private previousScaling: Vector3 = new Vector3(1, 1, 1)
private lineCount = 1
private nodeHeight = 0
constructor(
private state: State<CcState>,
private threeCameraService: ThreeCameraService,
private threeSceneService: ThreeSceneService,
private threeMapControlsService: ThreeMapControlsService
) {
this.labels = new Array<InternalLabel>()
this.threeMapControlsService.subscribe("onCameraChanged", () => this.onCameraChanged())
}
// Labels need to be scaled according to map or it will clip + looks bad
addLeafLabel(node: Node, highestNodeInSet: number, enforceLabel = false) {
const { appSettings, dynamicSettings } = this.state.getValue()
const { scaling, layoutAlgorithm, showMetricLabelNodeName, showMetricLabelNameValue } = appSettings
const { margin, heightMetric } = dynamicSettings
const multiplier = new Vector3(scaling.x, scaling.y, scaling.z)
let labelText = ""
if (showMetricLabelNodeName || (enforceLabel && !showMetricLabelNameValue)) {
labelText = `${node.name}`
} else IEif (!showMetricLabelNameValue) {
return
}
if (showMetricLabelNameValue) {
if (labelText !== "") {
labelText += "\n"
}
labelText += `${node.attributes[heightMetric]} ${heightMetric}`
}
const label = this.makeText(labelText, 30, node)
let newHighestNode = node.height + Math.abs(node.heightDelta ?? 0)
newHighestNode = newHighestNode * multiplier.y > highestNodeInSet * multiplier.y ? newHighestNode : highestNodeInSet
this.nodeHeight = this.nodeHeight > newHighestNode ? this.nodeHeight : newHighestNode
// todo: tk rename to addLeafLabel
const x = node.x0 - treeMapSize
const y = node.z0
const z = node.y0 - treeMapSize
const labelX = (x + node.width / 2) * multiplier.x
const labelY = (y + this.nodeHeight) * multiplier.y
const labelYOrigin = (y + node.height) * multiplier.y
const labelZ = (z + node.length / 2) * multiplier.z
const labelHeightScaled = this.LABEL_HEIGHT_COEFFICIENT * margin * this.LABEL_SCALE_FACTOR
let labelOffset = labelHeightScaled + label.heightValue / 2
switch (layoutAlgorithm) {
// !remark : algorithm scaling is not same as the squarified layout,
// !layout offset needs to be scaled down,the divided by value is just empirical,
// TODO !needs further investigation
case LayoutAlgorithm.StreetMap:
case LayoutAlgorithm.TreeMapStreet:
labelOffset /= 10
this.LABEL_HEIGHT_POSITION = 0
label.line = this.makeLine(labelX, labelY + labelOffset, labelYOrigin, labelZ)
break
default:
label.line = this.makeLine(labelX, labelY + labelHeightScaled / 2, labelYOrigin, labelZ)
}
label.sprite.position.set(labelX, labelY + labelOffset, labelZ) //label_height
label.sprite.material.color = new Color(this.mapLabelColors.rgb)
label.sprite.material.opacity = this.mapLabelColors.alpha
label.sprite.userData = { node }
this.threeSceneService.labels.add(label.sprite)
this.threeSceneService.labels.add(label.line)
this.labels.push(label) // todo tk: why is the duplication of this.labels and threeSceneService.labels needed? To sync label.sprite with label.line I guess - is there maybe a nicer solution for that?
}
clearLabels() {
this.threeSceneService.resetLabel()
this.threeSceneService.resetLineHighlight()
this.dispose(this.labels)
this.labels = []
this.nodeHeight = 0
this.LABEL_HEIGHT_POSITION = 60
// Reset the children
this.dispose(this.threeSceneService.labels.children)
this.threeSceneService.labels.children = []
}
private disposeSprite(element: Sprite) {
element.material.dispose()
element.material.map.dispose()
element.geometry.dispose()
}
private disposeLine(element: Line) {
const lineBasicMaterial = element.material as unknown as LineBasicMaterial
lineBasicMaterial.dispose()
element.geometry.dispose()
}
dispose(labels) {
for (const element of labels) {
if (element instanceof Sprite) {
this.disposeSprite(element)
}
if (element instanceof Line) {
this.disposeLine(element)
}
if (element.sprite !== undefined) {
this.disposeSprite(element.sprite)
}
if (element.line !== undefined) {
this.disposeLine(element.line)
}
}
}
clearTemporaryLabel(hoveredNode: Node) {
const index = this.labels.findIndex(({ node }) => node === hoveredNode)
if (index > -1) {
this.labels.splice(index, 1)
this.dispose(this.threeSceneService.labels.children)
this.threeSceneService.labels.children.length -= 2
this.threeSceneService.resetLineHighlight()
}
}
scale() {
const { scaling } = this.state.getValue().appSettings
const scalingVector = new Vector3(scaling.x, scaling.y, scaling.z)
const { margin } = this.state.getValue().dynamicSettings
const labelHeightDifference = new Vector3(0, this.LABEL_HEIGHT_COEFFICIENT * margin * this.LABEL_SCALE_FACTOR, 0)
for (const label of this.labels) {
const multiplier = scalingVector.clone()
label.sprite.position.sub(labelHeightDifference).divide(this.previousScaling).multiply(multiplier).add(labelHeightDifference)
if (multiplier.y > 1) {
multiplier.y = 1
}
// Attribute vertices does exist on geometry but it is missing in the mapping file for TypeScript.
const lineGeometry = label.line.geometry as BufferGeometry
const lineGeometryPosition = lineGeometry.attributes.position
// Position save, then clear and redraw?
lineGeometryPosition.setX(0, lineGeometryPosition.getX(0) * multiplier.x)
lineGeometryPosition.setY(0, lineGeometryPosition.getY(0) * multiplier.y)
lineGeometryPosition.setZ(0, lineGeometryPosition.getZ(0) * multiplier.z)
lineGeometryPosition.setX(1, label.sprite.position.x)
lineGeometryPosition.setY(1, label.sprite.position.y)
lineGeometryPosition.setZ(1, label.sprite.position.z)
lineGeometryPosition.needsUpdate = true
}
this.previousScaling.copy(scalingVector)
}
onCameraChanged() {
for (const label of this.labels) {
this.setLabelSize(label.sprite, label, label.sprite.material.map.image.width)
}
}
private makeText(message: string, fontsize: number, node: Node): InternalLabel {
const canvas = document.createElement("canvas")
const context = canvas.getContext("2d")
context.font = `${fontsize}px Roboto`
const margin = 25
const multiLineContext = message.split("\n")
// setting canvas width/height before ctx draw, else canvas is empty
const firstMultiLineContextWidth = context.measureText(multiLineContext[0]).width
const secondMultiLineContextWidth = context.measureText(multiLineContext[1]).width
canvas.width =
firstMultiLineContextWidth > secondMultiLineContextWidth
? firstMultiLineContextWidth + margin
: secondMultiLineContextWidth + margin
canvas.height = margin + fontsize * multiLineContext.length
// bg
context.font = `${fontsize}px Roboto`
context.fillStyle = "rgba(255,255,255,1)"
context.lineJoin = "round"
context.lineCap = "round"
context.lineWidth = 5
CodeMapLabelService.drawRectangleWithRoundedCorners(context, 0, 0, canvas.width, canvas.height, this.LABEL_CORNER_RADIUS)
// after setting the canvas width/height we have to re-set font to apply!?! looks like ctx reset
context.fillStyle = "rgba(0,0,0,1)"
context.textAlign = "center"
context.textBaseline = "middle"
//fillText() cannot create multi-line texts, we call it multiple times with different offsets to create a multi-line label
for (const [index, element] of multiLineContext.entries()) {
context.fillText(element, canvas.width / 2, (canvas.height * (index + 1)) / (multiLineContext.length + 1))
}
const texture = new Texture(canvas)
texture.minFilter = LinearFilter // NearestFilter;
texture.needsUpdate = true
const spriteMaterial = new SpriteMaterial({ map: texture })
const sprite = new Sprite(spriteMaterial)
this.lineCount = multiLineContext.length
this.setLabelSize(sprite, null, canvas.width)
return {
sprite,
heightValue: canvas.height,
line: null,
lineCount: multiLineContext.length,
node
}
}
private static drawRectangleWithRoundedCorners(context, x, y, width, height, radius) {
if (width < 2 * radius) {
radius = width / 2
}
Iif (height < 2 * radius) {
radius = height / 2
}
context.beginPath()
context.moveTo(x + radius, y)
context.arcTo(x + width, y, x + width, y + height, radius)
context.arcTo(x + width, y + height, x, y + height, radius)
context.arcTo(x, y + height, x, y, radius)
context.arcTo(x, y, x + width, y, radius)
context.closePath()
context.fill()
}
private setLabelSize(sprite: Sprite, label: InternalLabel, labelWidth: number = sprite.material.map.image.width) {
const mapCenter = new Box3().setFromObject(this.threeSceneService.mapGeometry).getBoundingSphere(new Sphere()).center
if (this.threeCameraService.camera) {
const distance = this.threeCameraService.camera.position.distanceTo(mapCenter)
Iif (label !== null) {
this.lineCount = label.lineCount
}
if (this.lineCount > 1) {
sprite.scale.set((distance / this.LABEL_WIDTH_DIVISOR) * labelWidth, distance / 25, 1)
} else {
sprite.scale.set((distance / this.LABEL_WIDTH_DIVISOR) * labelWidth, distance / this.LABEL_HEIGHT_DIVISOR, 1)
}
}
}
private makeLine(x: number, y: number, yOrigin: number, z: number) {
const material = new LineBasicMaterial({
color: this.LABEL_COLOR_RGB,
linewidth: 2
})
const bufferGeometry = new BufferGeometry().setFromPoints([
new Vector3(x, yOrigin, z),
new Vector3(x, y + this.LABEL_HEIGHT_POSITION, z)
])
return new Line(bufferGeometry, material)
}
}
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