fabric
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Object model for HTML5 canvas, and SVG-to-canvas parser. Backed by jsdom and node-canvas.
27 lines (24 loc) • 619 B
JavaScript
import { halfPI } from '../../constants.mjs';
/**
* Calculate the cos of an angle, avoiding returning floats for known results
* This function is here just to avoid getting 0.999999999999999 when dealing
* with numbers that are really 1 or 0.
* @param {TRadian} angle the angle
* @return {Number} the cosin value for angle.
*/
const cos = angle => {
if (angle === 0) {
return 1;
}
const angleSlice = Math.abs(angle) / halfPI;
switch (angleSlice) {
case 1:
case 3:
return 0;
case 2:
return -1;
}
return Math.cos(angle);
};
export { cos };
//# sourceMappingURL=cos.mjs.map