Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 | import {
translate2D,
verticalProjectionOnPlane,
get3DDistanceBetweenPoints,
getDistanceBetweenPoints
} from '../geometry'
import { v4 as uuidv4 } from 'uuid'
import { Point } from './Point'
import {
addVector,
multiplyVector,
substractVector,
vectorLength,
crossProduct,
dotProduct,
normalizeVector
} from '../vector'
export class Circle {
constructor(center, radius, layer) {
this.id = uuidv4()
this.type = 'circle'
this.version = 0
this.center = center
this.radius = radius
this.layer = layer
this.visible = true
}
clone() {
const circle = new Circle(
new Point(this.point.x, this.point.y),
this.radius,
this.layer
)
circle.id = uuidv4()
return circle
}
getIntersections(object) {
const intersections = []
if (!object) return
if (object.type == 'point') {
if (get3DDistanceBetweenPoints(object, this.center) == this.radius) {
intersections.push({ ...object })
}
} else if (object.type == 'line') {
let P = object.getProjectedPoint(this.center)
let distance = get3DDistanceBetweenPoints(P, this.center)
if (distance <= this.radius) {
let A = addVector(
P,
multiplyVector(
Math.sqrt(Math.pow(this.radius, 2) - Math.pow(distance, 2)),
object.getDirectionVector()
)
)
let B = addVector(
P,
multiplyVector(
-Math.sqrt(Math.pow(this.radius, 2) - Math.pow(distance, 2)),
object.getDirectionVector()
)
)
intersections.push({ ...A })
intersections.push({ ...B })
}
}
return intersections
}
getPxDistanceTo(point, canvasContext) {
const toCanvasRef = canvasContext.toCanvasRef
let pxCenter = toCanvasRef(this.center)
let pxRadius = this.radius / canvasContext.mmPerPx
if (this.normalVector) {
point.z = verticalProjectionOnPlane(
point,
this.normalVector,
this.center
).z
} else {
point.z = this.center.z
}
return Math.abs(get3DDistanceBetweenPoints(point, pxCenter) - pxRadius)
}
getDistanceToPoint(point) {
return get3DDistanceBetweenPoints(point, this.getProjectedPoint(point))
}
getHorizontalDistanceToPoint(point) {
return getDistanceBetweenPoints(
point,
this.getVerticalProjectedPoint(point)
)
}
isInPlane(plane) {
if (!plane) return false
const { point, normalVector } = plane
const circleNormalVector = this.normalVector || { x: 0, y: 0, z: 1 }
if (vectorLength(crossProduct(circleNormalVector, normalVector)) > 0.1)
return false
if (
dotProduct(
normalizeVector(substractVector(point, this.center)),
normalVector
) > 0.1
)
return false
return true
}
getProjectedPoint(point) {
if (this.normalVector) {
point.z = verticalProjectionOnPlane(
point,
this.normalVector,
this.center
).z
} else {
point.z = this.center.z
}
let distance = get3DDistanceBetweenPoints(point, this.center)
if (distance == 0) {
console.error("can't project center to cercle", this)
return null
}
let x = this.center.x + (point.x - this.center.x) * (this.radius / distance)
let y = this.center.y + (point.y - this.center.y) * (this.radius / distance)
let z = this.center.z + (point.z - this.center.z) * (this.radius / distance)
let P = new Point(x, y, z, this.layer)
return P
}
getVerticalProjectedPoint(point) {
return this.getProjectedPoint(point)
}
translate(vectorInMm) {
this.center = translate2D(this.center, vectorInMm)
}
}
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