NAME

LiveGraphicsCylindricalPlot3D.pl - provide an interactive plot on a rectangular cylinder.

DESCRIPTION

This macro provides the CylindricalPlot3D method for creating an interactive plot of a function of two variables z = f(r, t) (where r is the radius and t is the angle) via the LiveGraphics3D JavaScript applet. The method takes a MathObject Formula of two variables defined over an annular domain and some plot options as input and returns a string of plot data that can be displayed using the Live3Ddata routine of the LiveGraphics3D.pl macro.

METHODS

CylindricalPlot3D

Usage: CylindricalPlot3D(%options)

The available options are as follows.

function => $f

$f is a MathObject Formula. For example, in the setup section define

Context()->variables->are(r => 'Real', t => 'Real');
$a = random(1, 3);
$f = Formula("$a * r + t");    # Use double quotes!

before calling CylindricalPlot3D.

rvar => 'r'

Radial independent variable name, default 'r'. This must correspond to the radial variable used in the function.

tvar => 't'

Angular independent variable name, default 't'. This must correspond to the angular variable used in the function.

rmin => -3

Lower bound for the domain of the radial variable.

rmax => 3

Upper bound for the domain of the radial variable.

tmin => -3

Lower bound for the domain of the angular variable.

tmax => 3

Upper bound for the domain of the angular variable.

rsamples => 20

The number of sample values for the radial variable in the interval from rmin to rmax to use.

tsamples => 20

The number of sample values for the angular variable in the interval from tmin to tmax to use.

axesframed => 1

If set to 1 then the framed axes are displayed. If set to 0, the the framed axes are not shown. This is 1 by default.

xaxislabel => 'x'

Label for the axis corresponding to the first independent variable.

yaxislabel => 'y'

Label for the axis corresponding to the second independent variable.

zaxislabel => 'z'

Label for the axis corresponding to the dependent variable.

outputtype => 1

This determines what is contained in the string that the method returns. The values of 1 through 4 are accepted, and have the following meaning.

1. Return a string of only polygons (or edge mesh).

2. Return a string of only plot options.

3. Return a string of polygons (or edge mesh) and plot options.

4. Return the complete plot to be passed directly to the Live3DData method.