70 lines
2.3 KiB
JavaScript
70 lines
2.3 KiB
JavaScript
class Point {
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constructor(x, y) {
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this.x = x
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this.y = y
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}
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equals(pt) { return this.x == pt.x && this.y == pt.y }
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isIn(arr) { return this.indexIn(arr) != -1 }
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indexIn(arr) { return arr.findIndex((pt) => this.equals(pt)) }
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lastIndexIn(arr) { return arr.findLastIndex((pt) => this.equals(pt)) }
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up() { return new Point(this.x, this.y - 1) }
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down() { return new Point(this.x, this.y + 1) }
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left() { return new Point(this.x - 1, this.y) }
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right() { return new Point(this.x + 1, this.y) }
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upleft() { return new Point(this.x - 1, this.y - 1) }
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upright() { return new Point(this.x + 1, this.y - 1) }
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downleft() { return new Point(this.x - 1, this.y + 1) }
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downright() { return new Point(this.x + 1, this.y + 1) }
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u() { return this.up() }
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d() { return this.down() }
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l() { return this.left() }
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r() { return this.right() }
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ul() { return this.upleft() }
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ur() { return this.upright() }
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dl() { return this.downleft() }
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dr() { return this.downright() }
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getUnfilteredAdjNeighbors() { return [this.u(), this.l(), this.r(), this.d()] }
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getUnfilteredDiagNeighbors() { return [this.ul(), this.ur(), this.dl(), this.dr()] }
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getUnfilteredAllNeighbors() { return [this.ul(), this.u(), this.ur(), this.l(), this.r(), this.dl(), this.d(), this.dr()] }
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getUnfilteredAdjNeighborsIncSelf() { return [this.u(), this.l(), this, this.r(), this.d()] }
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getUnfilteredDiagNeighborsIncSelf() { return [this.ul(), this.ur(), this, this.dl(), this.dr()] }
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getUnfilteredAllNeighborsIncSelf() { return [this.ul(), this.u(), this.ur(), this.l(), this, this.r(), this.dl(), this.d(), this.dr()] }
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add(pt) { return new Point(this.x + pt.x, this.y + pt.y) }
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addMut(pt) {
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this.x += pt.x
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this.y += pt.y
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return this
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}
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sub(pt) { return new Point(this.x - pt.x, this.y - pt.y) }
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subMut(pt) {
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this.x -= pt.x
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this.y -= pt.y
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return this
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}
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squaredMag() { return this.x * this.x + this.y * this.y }
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mag() { return Math.sqrt(this.squaredMag()) }
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squaredDist(pt) { return this.sub(pt).squaredMag() }
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dist(pt) { return this.sub(pt).mag() }
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readingOrderCompare(pt) { return this.y < pt.y ? -1 : this.y > pt.y ? 1 : this.x < pt.x ? -1 : this.x > pt.x ? 1 : 0 }
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copy() { return new Point(this.x, this.y) }
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toString() { return this.x + "," + this.y }
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}
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Pt = Point
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function P(...args) {
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return new Point(...args)
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}
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