BezierCurve-class {Rgraphviz} | R Documentation

## Class "BezierCurve": A class to describe a Bezier curve

### Description

This class is used to represent a Bezier curve in R, which can then be used for other applications, plotted, etc

### Objects from the Class

Objects can be created by calls of the form `new("BezierCurve", ...)`.

### Slots

`cPoints`:

  Object of class `"list"`: A list of `xyPoint` objects, representing control points for the curve

### Methods

`cPoints`:

  Returns the `cPoints` slot

`pointList`:

  Returns a list of all points having been processed with teh `getPoints` method of `xyPoint`

`bezierPoints`:

  Returns a matrix giving x & y points (by column) for the complete Bezier curve

`lines`:

  Draws the Bezier curve

`show`:

  Provides a concise display of information

### Author(s)

Jeff Gentry

### See Also

`xyPoint`

### Examples

    V <- letters[1:10]
    M <- 1:4
    g1 <- randomGraph(V, M, .2)
    z <- agopen(g1,"foo")
    x <- AgEdge(z)  ## list of AgEdge objects
    x[[1]]  ## AgEdge
    a <- splines(x[[1]])[[1]]
    a  ## BezierCurve

    cPoints(a)
    pointList(a)
    bezierPoints(a)

[Package Rgraphviz version 2.28.0 Index]