Class QuadraticBezier

Represents a 2D Bézier curve.

Note: Many Bézier operations use bezier-js's.

Hierarchy

BezierJSWrapper
- QuadraticBezier

Constructors

constructor

new QuadraticBezier(p0, p1, p2): QuadraticBezier
Parameters
- p0: Vec3
- p1: Vec3
- p2: Vec3
Returns QuadraticBezier
Overrides BezierJSWrapper.constructor
- Defined in shapes/QuadraticBezier.ts:12

Properties

`Readonly` p0

p0: Vec3

`Readonly` p1

p1: Vec3

`Readonly` p2

p2: Vec3

Methods

approximateDistance

approximateDistance(point): number
Parameters
- point: Vec3
Returns number
the approximate distance from point to this curve.
- Defined in shapes/QuadraticBezier.ts:87

argIntersectsLineSegment

argIntersectsLineSegment(line): number[]
Parameters
- line: LineSegment2
Returns number[]
Inherited from BezierJSWrapper.argIntersectsLineSegment
- Defined in shapes/BezierJSWrapper.ts:89

at

at(t): Vec3
Parameters
- t: number
Returns Vec3
the curve evaluated at t.

t should be a number in [0, 1].
Overrides BezierJSWrapper.at
- Defined in shapes/QuadraticBezier.ts:41

containsPoint

containsPoint(point, epsilon?): boolean
Returns true if and only if the given point is contained within this shape.

epsilon is a small number used to counteract floating point error. Thus, if point is within epsilon of the inside of this shape, containsPoint may also return true.

The default implementation relies on signedDistance. Subclasses may override this method to provide a more efficient implementation.
Parameters
- point: Vec3
- epsilon: number = Abstract2DShape.smallValue
Returns boolean
Inherited from BezierJSWrapper.containsPoint
- Defined in shapes/Abstract2DShape.ts:46

derivativeAt

derivativeAt(t): Vec3
Parameters
- t: number
Returns Vec3
Overrides BezierJSWrapper.derivativeAt
- Defined in shapes/QuadraticBezier.ts:54

distance

distance(point): number
Parameters
- point: Vec3
Returns number
the (more) exact distance from point to this.

See
approximateDistance
Inherited from BezierJSWrapper.distance
- Defined in shapes/BezierJSWrapper.ts:49

`Protected` getBezier

getBezier(): Bezier
Returns Bezier
Inherited from BezierJSWrapper.getBezier
- Defined in shapes/BezierJSWrapper.ts:32

getLooseBoundingBox

getLooseBoundingBox(): Rect2
Returns Rect2
an overestimate of this shape's bounding box.
Overrides BezierJSWrapper.getLooseBoundingBox
- Defined in shapes/QuadraticBezier.ts:80

getPoints

getPoints(): Vec3[]
Returns Vec3[]
Overrides BezierJSWrapper.getPoints
- Defined in shapes/QuadraticBezier.ts:155

getTightBoundingBox

getTightBoundingBox(): Rect2
Returns Rect2
Inherited from BezierJSWrapper.getTightBoundingBox
- Defined in shapes/BezierJSWrapper.ts:81

intersectsBezier

intersectsBezier(other): {
parameterValue: number;
point: Vec3;
}[]
Parameters
- other: BezierJSWrapper
Returns {
parameterValue: number;
point: Vec3;
}[]
Inherited from BezierJSWrapper.intersectsBezier
- Defined in shapes/BezierJSWrapper.ts:228

intersectsLineSegment

intersectsLineSegment(line): Vec3[]
Parameters
- line: LineSegment2
Returns Vec3[]
Inherited from BezierJSWrapper.intersectsLineSegment
- Defined in shapes/Parameterized2DShape.ts:39

nearestPointTo

nearestPointTo(point): {
parameterValue: number;
point: Vec3;
}
Parameters
- point: Vec3
Returns {
parameterValue: number;
point: Vec3;
}
- parameterValue: number
- point: Vec3
Inherited from BezierJSWrapper.nearestPointTo
- Defined in shapes/BezierJSWrapper.ts:137

normal

normal(t): Vec3
Parameters
- t: number
Returns Vec3
Overrides BezierJSWrapper.normal
- Defined in shapes/QuadraticBezier.ts:74

normalAt

normalAt(t): Vec3
Parameters
- t: number
Returns Vec3
Inherited from BezierJSWrapper.normalAt
- Defined in shapes/BezierJSWrapper.ts:73

secondDerivativeAt

secondDerivativeAt(t): Vec3
Parameters
- t: number
Returns Vec3
Overrides BezierJSWrapper.secondDerivativeAt
- Defined in shapes/QuadraticBezier.ts:64

signedDistance

signedDistance(point): number
Parameters
- point: Vec3
Returns number
Inherited from BezierJSWrapper.signedDistance
- Defined in shapes/BezierJSWrapper.ts:39

splitAt

splitAt(t): [BezierJSWrapper] | [BezierJSWrapper, BezierJSWrapper]
Parameters
- t: number
Returns [BezierJSWrapper] | [BezierJSWrapper, BezierJSWrapper]
Inherited from BezierJSWrapper.splitAt
- Defined in shapes/BezierJSWrapper.ts:124

tangentAt

tangentAt(t): Vec3
Parameters
- t: number
Returns Vec3
Inherited from BezierJSWrapper.tangentAt
- Defined in shapes/BezierJSWrapper.ts:77

toString

toString(): string
Returns string
Inherited from BezierJSWrapper.toString
- Defined in shapes/BezierJSWrapper.ts:255

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