A couple questions - AVS Forums

mikm

21st September 2002 00:23 UTC

A couple questions
1. What is the easiest way to create a solid superscope

2. What is the easiest way to write code to do 3d movement in dynamic movement. I want to be able to "zoom" with adding 1 to z, and pan by adjusting x and y. The final result can be in either d or x/y coordinates.

Karnov

21st September 2002 01:20 UTC

Well, I can help you with your first question

the very best example ive seen on how to do this came from someone asking about how to make a good square. (see attachment)

(I AM REALLY SORRY, BUT FOR THE LIFE OF ME, I CANNOT REMEMBER WHO MADE THIS(it was posted recently)

see, they just made a ziggy(?) line and set it the "n" var to 800 so you couldnt tell

try setting it to 30

also, the line width func on the misc->set render mode is very helpful

im sorry i cant help you on your second question :(

(remember, just waste your life with superscopes and you might (i havent yet)understand them)

Jaheckelsafar

21st September 2002 02:07 UTC

Zooming isn't that hard. Just multply x and y by the inverse of your zoom factor.

eg.

frame:
zoom = 1.5;
zf = 1/zoom;

pixel:
x=x*zf;
y=y*zf;

To move around, just do it the way you would normally. (x=x+whatever)

I made a preset once that did something like that. Feel free to dissect and stuff.

jheriko

21st September 2002 02:10 UTC

Re: A couple questions

Originally posted by Michaelthecat
2. What is the easiest way to write code to do 3d movement in dynamic movement. I want to be able to "zoom" with adding 1 to z, and pan by adjusting x and y. The final result can be in either d or x/y coordinates.

That one is actually quite simple since you don't have to do any rotaions (so it will be pretty fast too)

just put something like this in the last box

x1=x;
y1=y;
z1=z;

x=x1/(k+s*z1);
y=y1/(k+s*z1);

where k and s are constants you choose to alter the strength and scale of the perspective calculation. that is the based of doing a 3d projection onto a 2d plane.