| 1 | export default function linearFunction(x0, y0, a) {
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| 2 | return {
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| 3 | y(x) {
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| 4 | return +y0 + (x - x0) * a;
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| 5 | },
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| 6 |
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| 7 | x(y) {
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| 8 | return +x0 + (y - y0) / a;
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| 9 | }
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| 10 | };
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| 11 | }
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| 12 |
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| 13 | export function interpolateLinear(x0, x1, phase) {
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| 14 | return linearFunction(x0, x0, phase).y(x1);
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| 15 | }
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| 16 |
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