3D Wave Physlet

DownLoad

Documentation

Embedding

<APPLET code="EMWave.class" width=600 height=500>

<PARAM NAME = "showControls" VALUE = "false">

<PARAM NAME = "animate" VALUE = "true">
<PARAM NAME = "orientation" VALUE = "0">
<PARAM NAME = "framesPerSec" VALUE = "10">
<PARAM NAME = "translation" VALUE = "2">

</APPLET>

showControls

is a true/false boolean that reveals or conceals the display of a control panel containing three sliders which rotate the figures in three dimensions.

animate

is a true/false boolean that species the display of an animated wave or a static wave.

orientation

is a an integer of either 0 or 1. A value of 0 orients the z-axis vertically with propagation proceeding upwards. Rotation then occurs about the z-axis for side-to-side drags and about the line of nodes for up and down drags.

framesPerSec

is an integer value which specifies how fast the applet animates--or rather, how man times a second the figures are redrawn.

translation

is a double value which specifies the distance (in units) the waves are translated for every animation--that is, every redrawing of the screen.

JavaScript

The follow public methods can be called from within an HTML page using JavScript.

createAxes(double x, double y, double z, double s )

Creates a set of axes at {x,y,z} with lengths s.
Notes: Position and lengths are in units which has a default value of 10 pixels per 1 unit

createCircularLeft(double z1, double z2, double a, double ph)
        Creates a clockwise rotating circular wave extending from z1 to z2, with amplitude a, and phase ph.

Notes

• Position and amplitude are in units which has a default value of 10 pixels per 1 unit.
• The wave propagates in the positive z direction, so z1 must be less than z2. That is, z1<z2.
• The phase, ph, is in radians.

createCircularRight(double z1, double z2,double a, double ph)

        Creates a counterclockwise rotating circular wave extending from z1 to z2, with amplitude a and phase ph.

Notes:

• Position and amplitude are in units which has a default value of 10 pixels per 1 unit.
• The wave propagates in the positive z direction, so z1 must be less than z2. That is, z1<z2.
• The phase, ph, is in radians.

createFilledSquare(double z, double s)

        Creates a filled square at {0,0,z}with a side length s.

Notes: Position and length are in units which has a default value of 10 pixels per 1 unit.

createLinear(double z1, double z2, double a, double ph, double pol)

        Creates a linear wave extending from z1 to z2 with amplitude a, phase ph, and polarization pol.

        Notes:

• Position and amplitude are in units which has a default value of 10 pixels per 1 unit.
• The wave propagates in the positive z direction, so z1 must be less than z2. That is, z1<z2.
• The phase, ph, and polarization, pol, are in radians.

createParsedWave(String func, double z1, double z2, double pol)

        Creates a wave or function defined by func extending from z1 to z2 with polarization pol.

Notes:

• func must be a function of z.
• The figure propagates in the positive z direction, so z1 must be less than z2. That is, z1<z2.
• The polarization, pol, is in radians.

createPlane(double z, double l, double w, double pol)

        Creates a plane composed of lines at {0,0,z}with length l, width w, and polarization pol.

        Notes: Position and length are in units which has a default value of 10 pixels per 1 unit.

createSquare(double z, double s)

        Creates an outlined square at {0,0,z} with a side length s.

        Notes: Position and length are in units which has a default value of 10 pixels per 1 unit.

  setOrientation(double theta, double alpha, double phi)

Rotates the figures an amount theta in the x-y plane (z-axis rotation), alpha in the x-z plane (y-axis rotation), and theta in the y-z plane (x-axis rotation).

         Notes:

• Angles are in radians.
• When all three angles are zero the positive x-axis points horizontally to the right, the positive y-axis points vertically upwards, and the positive z-axis points out of the screen..

  setOrigin(int x, int y)

        Translates the origin from the current origin to {x,y}.  The default origin is the center of the window

Notes: The origin, x and y, is in pixels.

setPlaneLineDensity(int d)

        Sets the line density of the Plane figure to d.

        Notes:The line density is how many pixels there are per line--that is, how many pixels the lines are separated by. The default is 2.

 

setPixPerUnit(int ppu)

        Sets the number of pixels contained in one unit to ppu.  All figures are described in units--amplitude, extent, height, width, etc.

        Notes:The default is 10 pixels per 1 unit.

setRGB(int r, int g, int b)

        Sets the color to {r,g,b} in which all subsequent figures are drawn in.

        Notes:The color is specified by red (r), green (g), and blue (b) components in the range of 0-255.

setWavelength(double w)

        Sets the wavelength of all waves to w.

        Notes: The wavelength is in units.  The default is 20.

setWaveLineDensity(double d)
        Sets the line density of all waves to d.

        Notes: The line density is how many pixels there are per line--that is, how many pixels the lines are separated by. The default is 2.

deleteAll()
        Deletes all figures.