An abstract base class for creating a curve object that contains methods for interpolation.
For an array of Curves see [page:CurvePath].
[example:webgl_geometry_extrude_splines geometry / extrude / splines ]
Constructor
[name]()
This constructor creates a new [name].
Methods
[method:Vector getPoint]( t )
Returns a vector for point t of the curve where t is between 0 and 1. Must be implemented in the extending class.
[method:Vector getPointAt]( u )
Returns a vector for point at relative position in curve according to arc length
[method:Array getPoints]( divisions )
Get sequence of points using getPoint( t )
[method:Array getSpacedPoints]( divisions )
Get sequence of equi-spaced points using getPointAt( u )
[method:Float getLength]()
Get total curve arc length
[method:Array getLengths]( divisions )
Get list of cumulative segment lengths
[method:null updateArcLengths]()
Update the cumlative segment distance cache
[method:Float getUtoTmapping]( u, distance )
Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant
[method:Vector getTangent]( t )
Returns a unit vector tangent at t. If the subclassed curve do not implement its tangent derivation, 2 points a small delta apart will be used to find its gradient which seems to give a reasonable approximation
[method:Vector getTangentAt]( u )
Returns tangent at equidistant point u on the curve
Source
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]