Plane

Source (.js)Source (.d.ts)

Introduction

vtkPlane provides methods for various plane computations. These include projecting points onto a plane, evaluating the plane equation, and returning plane normal.

Methods

distanceToPlane

Get the distance of a point x to a plane defined by n (x-p0) = 0. The normal n must be magnitude = 1.

Argument	Type	Required	Description
x	Vector3	Yes	The point coordiante.

evaluateFunction

Evaluate plane equation for point x.

Accepts both an array point representation and individual xyz arguments.

plane.evaluateFunction([0.0, 0.0, 0.0]);
plane.evaluateFunction(0.0, 0.0, 0.0);

Argument	Type	Required	Description
value	Vector3	Yes

evaluateFunction

Evaluate plane equation for point x.

Accepts both an array point representation and individual xyz arguments.

plane.evaluateFunction([0.0, 0.0, 0.0]);
plane.evaluateFunction(0.0, 0.0, 0.0);

Argument	Type	Required	Description
x	Number	Yes	The x coordinate.
y	Number	Yes	The y coordinate.
z	Number	Yes	The z coordinate.

evaluateGradient

Given the point xyz (three floating values) evaluate the equation for the plane gradient. Note that the normal and origin must have already been specified. The method returns an array of three floats.

Argument	Type	Required	Description
xyz		Yes

extend

Method used to decorate a given object (publicAPI+model) with vtkPlane characteristics.

Argument	Type	Required	Description
publicAPI		Yes	object on which methods will be bounds (public)
model		Yes	object on which data structure will be bounds (protected)
initialValues	IPlaneInitialValues	No	(default: {})

generalizedProjectPoint

Argument	Type	Required	Description
x	Vector3	Yes	The point coordinate.
xproj	Vector3	Yes	The projection point's coordinate.

getNormal

Get plane normal. Plane is defined by point and normal.

getNormalByReference

Get plane normal. Plane is defined by point and normal.

getOrigin

Get the origin of the plane

getOriginByReference

Get the origin of the plane

intersectWithLine

Given a line defined by the two points p1,p2; and a plane defined by the normal n and point p0, compute an intersection. Return an object:

let obj = {intersection: ..., betweenPoints: ..., t: ..., x: ...};

where:

• intersection (boolean): indicates if the plane and line intersect.
• betweenPoints (boolean): indicates if the intersection is between the provided points. True if (0 <= t <= 1), and false otherwise.
• t (Number): parametric coordinate along the line.
• x (Array): coordinates of intersection.

If the plane and line are parallel, intersection is false and t is set to Number.MAX_VALUE.

Argument	Type	Required	Description
p1	Vector3	Yes	The first point coordiante.
p2	Vector3	Yes	The second point coordiante.

intersectWithPlane

Given a planes defined by the normals n0 & n1 and origin points p0 & p1, compute the line representing the plane intersection. Return an object:

let obj = {intersection: ..., error: ..., l0: ..., l1: ...};

where:

• intersection (boolean): indicates if the two planes intersect. Intersection is true if (0 <= t <= 1), and false otherwise.
• l0 (Array): coordinates of point 0 of the intersection line.
• l1 (Array): coordinates of point 1 of the intersection line.
• error (String|null): Conditional, if the planes do not intersect, is it because they are coplanar (COINCIDE) or parallel (DISJOINT).

Argument	Type	Required	Description
planeOrigin	Vector3	Yes
planeNormal	Vector3	Yes

newInstance

Method used to create a new instance of vtkPlane.

Argument	Type	Required	Description
initialValues	IPlaneInitialValues	No	for pre-setting some of its content

projectPoint

Argument	Type	Required	Description
x	Vector3	Yes	The point coordinate.
xproj	Vector3	Yes	The projection point's coordinate.

projectVector

Project a vector v onto plane. The projected vector is returned in vproj.

Argument	Type	Required	Description
v	Vector3	Yes	The vector coordinate.
vproj	Vector3	Yes	The projection vector's coordinate..

push

Translate the plane in the direction of the normal by the distance specified. Negative values move the plane in the opposite direction.

Argument	Type	Required	Description
distance	Number	Yes

setNormal

Set the normal of the plane.

Argument	Type	Required	Description
x	Number	Yes	The x coordinate.
y	Number	Yes	The y coordinate.
z	Number	Yes	The z coordinate.

setNormal

Set the normal of the plane.

Argument	Type	Required	Description
normal	Vector3	Yes	The normal coordinate.

setNormalFrom

Set the normal object.

Argument	Type	Required	Description
normal	Vector3	Yes	The normal coordinate.

setOrigin

Set the origin of the plane.

Argument	Type	Required	Description
x	Number	Yes	The x coordinate of the origin point.
y	Number	Yes	The y coordinate of the origin point.
z	Number	Yes	The z coordinate of the origin point.

setOrigin

Set the origin of the plane.

Argument	Type	Required	Description
origin	Vector3	Yes	The coordinate of the origin point.

setOriginFrom

Set the origin of the plane.

Argument	Type	Required	Description
origin	Vector3	Yes	The coordinate of the origin point.

x

The intersection point, or an empty array when the line is parallel to the plane and no intersection was computed.