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extract radiusAtAngle to a function

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This commit is contained in:
Val Erastov 2016-12-01 02:13:53 -08:00
parent 2c824b88ce
commit cfae03f291
1 changed files with 6 additions and 2 deletions
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8
web/app/sketcher/shapes/ellipse.js
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@ -52,10 +52,14 @@ export class Ellipse extends SketchObject {
y = radius * Math.sin(angle);
return {x, y, angle, radius};
}
radiusAtAngle(angle) {
return Math.sqrt(1/( sq(Math.cos(angle)/this.radiusX) + sq(Math.sin(angle)/this.radiusY)))
}
normalDistance(aim) {
const polarPoint = this.toEllipseCoordinateSystem(aim);
const L = Math.sqrt(1/( sq(Math.cos(polarPoint.angle)/this.radiusX) + sq(Math.sin(polarPoint.angle)/this.radiusY)));
const L = this.radiusAtAngle(polarPoint.angle);
return Math.abs(polarPoint.radius - L);
}