26 lines
544 B
JavaScript
26 lines
544 B
JavaScript
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// Utility function
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export function randomi (min, max) {
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return Math.floor(Math.random() * (max - min) + min)
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}
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export function deg2rad (deg) {
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return deg * Math.PI / 180
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}
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export function rad2vec (r) {
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return { x: Math.cos(r), y: Math.sin(r) }
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}
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export function intersectRect (r1, r2) {
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return !(r2.x > r1.w + r1.x ||
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r2.w + r2.x < r1.x ||
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r2.y > r1.h + r1.y ||
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r2.h + r2.y < r1.y)
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}
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export function distanceTo (o1, o2) {
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return Math.sqrt(Math.pow(o2.x - o1.x, 2) + Math.pow(o2.y - o1.y, 2))
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}
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