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47 lines
1.3 KiB
TypeScript
47 lines
1.3 KiB
TypeScript
const epsilon = 1e-5;
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export function areClose(value1: number, value2: number): boolean {
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return Math.abs(value1 - value2) < epsilon;
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}
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export function greaterThanOrClose(value1: number, value2: number): boolean {
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return value1 > value2 || areClose(value1, value2);
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}
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export function greaterThan(value1: number, value2: number): boolean {
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return value1 > value2 && !areClose(value1, value2);
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}
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export function lessThan(value1: number, value2: number): boolean {
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return value1 < value2 && !areClose(value1, value2);
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}
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export function isZero(value: number): boolean {
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return Math.abs(value) < epsilon;
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}
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export function greaterThanZero(value: Object): boolean {
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return <number>value > 0;
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}
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export function notNegative(value: Object): boolean {
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return <number>value >= 0;
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}
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export const radiansToDegrees = (a: number) => a * (180 / Math.PI);
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export const degreesToRadians = (a: number) => a * (Math.PI / 180);
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/**
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* Map value changes across a set of criteria
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* @param val value to map
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* @param in_min minimum
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* @param in_max maximum
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* @param out_min starting value
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* @param out_max ending value
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* @returns
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*/
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export function valueMap(val: number, in_min: number, in_max: number, out_min: number, out_max: number) {
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return ((val - in_min) * (out_max - out_min)) / (in_max - in_min) + out_min;
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}
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