From 45bca977157084e11aaa2554ca3a2a403cedcfdb Mon Sep 17 00:00:00 2001
From: Terry Truong <terry06890@gmail.com>
Date: Fri, 24 Jun 2022 19:19:12 +1000
Subject: Move utility functions into util.ts

---
 src/lib.ts | 139 +------------------------------------------------------------
 1 file changed, 2 insertions(+), 137 deletions(-)

(limited to 'src/lib.ts')

diff --git a/src/lib.ts b/src/lib.ts
index e210e97..4fd999b 100644
--- a/src/lib.ts
+++ b/src/lib.ts
@@ -1,7 +1,8 @@
 
 /*
- * Types/classes
+ * Project-wide types/classes
  */
+
 // Used for tree-of-life representation
 // Maps tree-of-life node names to node objects
 export type TolMap = Map<string, TolNode>;
@@ -87,139 +88,3 @@ export type UiOptions = {
 	disabledActions: Set<Action>,
 	scrollGap: number, // Size of scroll bar, in px
 };
-
-/*
- * General utility functions
- */
-
-export type Breakpoint = 'sm' | 'md' | 'lg'; // These represent screen sizes
-export function getBreakpoint(): Breakpoint {
-	let w = window.innerWidth;
-	if (w < 768){
-		return 'sm';
-	} else if (w < 1024){
-		return 'md';
-	} else {
-		return 'lg';
-	}
-}
-
-// Returns [0 ... len]
-export function range(len: number): number[] {
-	return [...Array(len).keys()];
-}
-// Returns sum of array values
-export function arraySum(array: number[]): number {
-	return array.reduce((x,y) => x+y);
-}
-// Returns an array of increasing evenly-spaced numbers from 'start' to 'end' with size 'size'
-export function linspace(start: number, end: number, size: number): number[] {
-	let step = (end - start) / (size - 1);
-	let ar = [];
-	for (let i = 0; i < size; i++){
-		ar.push(start + step * i);
-	}
-	return ar;
-}
-// Returns array copy with vals clipped to within [min,max], redistributing to compensate
-// Returns null on failure
-export function limitVals(arr: number[], min: number, max: number): number[] | null {
-	let vals = [...arr];
-	let clipped = new Array(vals.length).fill(false);
-	let owedChg = 0; // Stores total change made after clipping values
-	while (true){
-		// Clip values
-		for (let i = 0; i < vals.length; i++){
-			if (clipped[i]){
-				continue;
-			}
-			if (vals[i] < min){
-				owedChg += vals[i] - min;
-				vals[i] = min;
-				clipped[i] = true;
-			} else if (vals[i] > max){
-				owedChg += vals[i] - max;
-				vals[i] = max;
-				clipped[i] = true;
-			}
-		}
-		if (Math.abs(owedChg) < Number.EPSILON){
-			return vals;
-		}
-		// Compensate for changes made
-		let indicesToUpdate = (owedChg > 0) ?
-			range(vals.length).filter(idx => vals[idx] < max) :
-			range(vals.length).filter(idx => vals[idx] > min);
-		if (indicesToUpdate.length == 0){
-			return null;
-		}
-		for (let i of indicesToUpdate){
-			vals[i] += owedChg / indicesToUpdate.length;
-		}
-		owedChg = 0;
-	}
-}
-// Usable to iterate through possible int arrays with ascending values in the range 0 to maxLen-1, starting with [0]
-	// eg: With maxLen 3, updates [0] to [0,1], then to [0,2], then [0,1,2]
-// Returns false when there is no next array
-export function updateAscSeq(seq: number[], maxLen: number): boolean {
-	// Try increasing last element, then preceding elements, then extending the array
-	let i = seq.length - 1;
-	while (true){
-		if (i > 0 && seq[i] < (maxLen - 1) - (seq.length - 1 - i)){
-			seq[i]++;
-			return true;
-		} else if (i > 0){
-			i--;
-		} else {
-			if (seq.length < maxLen){
-				seq.push(0);
-				seq.splice(0, seq.length, ...range(seq.length));
-				return true;
-			} else {
-				return false;
-			}
-		}
-	}
-}
-// Given a non-empty array of non-negative weights, returns an array index chosen with weighted pseudorandomness
-// Returns null if array contains all zeros
-export function randWeightedChoice(weights: number[]): number | null {
-	let thresholds = Array(weights.length);
-	let sum = 0;
-	for (let i = 0; i < weights.length; i++){
-		sum += weights[i];
-		thresholds[i] = sum;
-	}
-	let rand = Math.random();
-	for (let i = 0; i < weights.length; i++){
-		if (rand <= thresholds[i] / sum){
-			return i;
-		}
-	}
-	return null;
-}
-// Returns a string with words first-letter capitalised
-export function capitalizeWords(str: string){
-	str = str.replace(/\b\w/g, x => x.toUpperCase()); // '\b' matches word boundary, '\w' is like [a-zA-Z0-9_]
-	str = str.replace(/(\w)'S/, '$1\'s'); // Avoid cases like "traveler's tree" -> "Traveler'S Tree"
-	return str;
-}
-// Dynamically obtains scroll bar width
-// From stackoverflow.com/questions/13382516/getting-scroll-bar-width-using-javascript
-export function getScrollBarWidth(){
-	// Create hidden outer div
-	let outer = document.createElement('div');
-	outer.style.visibility = 'hidden';
-	outer.style.overflow = 'scroll';
-	document.body.appendChild(outer);
-	// Create inner div
-	let inner = document.createElement('div');
-	outer.appendChild(inner);
-	// Get width difference
-	let scrollBarWidth = outer.offsetWidth - inner.offsetWidth;
-	// Remove temporary divs
-	outer.parentNode!.removeChild(outer);
-	//
-	return scrollBarWidth;
-}
-- 
cgit v1.2.3