5-May-2003 DEMO DAY PRESENTATION

INTRODUCTION
	* About screen
	* So we it's still web-based, for use at Brown, but can be extended for
          use at other schools as well
	* We're hoping to get into the Harvey Project
	* Successful in that students can experiment with values and see results
	* We can test effectiveness of program by checking test scores in future
          BI080 classes
	* We started simpler, became kinda busy, but you can still see what's
          going on and not be wondering what does what, not be confused
	* Our program models A LOT of different factors in the system
	* Removed external links, in case addresses change
	* In the end, we still required everybody to program

THINGS THAT WE DID
	* Visualizer
		- Relation between resistance-blood flow and cardiac output
		- Histogram of cardiac output
		- Heart-blood flow relation to stroke volume
		- Hiliting of animation to tie it to values more
		- Logging textbox
		- Help rollovers - text from Prof. Stein
		- Valve timing
		- Oxygenation red->blue, deoxygenation blue-red
		- Sliders - undo/redo, scrollbar-like behavior,
                  control-clicking arrows
		- Default button
		- Pause button
		- Fields: blood pressure, MCFP, RAP, C.O. = H.R. x Stroke Volume
		- Contractility models correctly now (i.e. strong/weak heart)

	* Grapher
		- Grapher: line thickness, labels (which are static,
                  b/c axes don't change)
		- Flexible in terms of controlling margins, tick marks, functions
		- Dynamically redraws, very important part of the program and 
                  visualization
		- Show intersection
		- Show default curves (similar to show default animation)
		- Vectors weren't too practical

	* Math
		- Meaning of math behind it all
		- "Real" equation has 23 unknowns ... we're only dealing
                  with 5 variables in our program
		- Constructing the curves
		- What's wrong with our model

	* Scenarios
		- Scenario system: stop, rewind, step back, step forward
		- 3 scenarios: list of values and text strings
		- Enabling/disabling of buttons at appropriate times
		- Graph and animation update for each stage
		- Scenario textbox

	* Tutorials
		- Tutorials - very thorough, should be like an online-manual

PROCESS, WHAT WAS DIFFICULT
	* Director is a little buggy and slow, Java probably would have been
          better
	* Too memory intensive with so many cast members and sprites, even on
          these computers
	* Animation timing, coordinates, vector drawings, grapher/math/animation
          slowdown
	* Scripting got real messy real fast
	* Dealing with vectors - that was the first big milestone, which was
          our prototype demo
	* Vectors like resizing themselves when we don't want them to -
          hard when we overlay multiple vectors
	* Linking is messy

THINGS WE DIDN'T GET TO
	* Scenario-editor, which Prof. Stein showed interest in, especially
          for future work
	* Different screen sizes, dynamic resizing
	* Flowchart (abandoned)
	* Reference (i.e. glossary), but not necessary b/c Prof. Stein didn't
          require it
	* Sounds and narration
	* Math tutorial (math is not as interesting as it could be, because
          the model is simplified)
	* Can't change the type of heart

RECOMMENDATIONS/REFLECTIONS
	* Director probably not the best for speed optimization, it tries to do
          more than we really need
	* Visualizer looks simple, but underlying code is very complex
	* Definitely a project worth doing; valuable experience
	* Interesting future projects may involve porting our code over to Java,
          adding new scenarios/features, and other neat stuff :)