CS 262, Spring '98


Assignment #6: 10 points

Date Due: Friday, 4/10/98


(4)  1.	Use the AVS network ~cs262/anim.net to produce an animation
	of the orthogonal slices in the field ~cs262/hebert.fld.  Show
	the J slice plane on channel 1 of the field. The animation 
	should step through the slices from slice 0 to slice 6 and 
	back to slice 1 again.  This allows the animation to be played 
	in a continuous loop cycle.  Add your name to the output,
	save the frames as disk files in a directory you create in
	/scratch  and then convert the individual frames to an MPEG 
	movie using the dmconvert command on viz1.  Set the Geometry 
	Viewer window to be 200x200 pixels (see the Geometry Viewer 
	Camera submenu) and adjust the Image Viewer window accordingly 
	to minimize the size of the saved files.  Print and hand in 
	frame 0 of your movie along with the name of your movie file 
	on viz1. Set world read permissions on your movie file.

(3)  2.	Examine the 3D vector velocity field ~cs262/hw6.fld using
	the Hedgehog module and the Isosurface and Vector Mag modules.
	Display the Hedgehog output from a sample plane located in 
	the center of the field parallel to the x-y plane
	together with an isosurface level of 5.0 and answer the following:
	(a)  What are the dimensions of the field?
	(b)  Describe the structure of the velocity field qualitatively.
	Label the output with your name and hand in a printout of your
	network and the Geometry Viewer output.

(3)  3.	Use the Particle Advector and Samplers modules to release a 
	line of particles into the velocity field ~cs262/hw6.fld. 
	Set the following parameters for the Particle Advector:
	Method=Runge-Kutta, Stepsize=0.1, Size=0.2, Length=50, Style=add.
	For Samplers, use a line in the center of the field
	parallel to the X axis with 8 segments.  When you have the
	advection working, rotate the field so the trace motion
	can be clearly seen, save each step, and make an MPEG movie.
	Label the output with your name, print and hand in your 
	AVS network along with the last frame of your movie and the name
	of your movie on viz1.  Remember to set world read permissions on 
	your movie file.