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Index › Programming Questions & Help › Syntax Questions › dividing Traer springs into separate lists
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dividing Traer springs into separate lists (Read 443 times)
oompa_l
dividing Traer springs into separate lists
Apr 12th, 2009, 2:49pm  
I want to be able to draw springs within my Traer physics system but without drawing all of them - as it stands I have to cycle through the whole list. Is there a way to each spring an index, or place it in a arraylist which I could then use isolated from the global list of springs? I made a parent class called Link which spawns a spring but I am not sure how I you can add a spring to an arraylist...any ideas?

thanks!
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Florito
Re: dividing Traer springs into separate lists
Reply #1 - Apr 15th, 2009, 8:22am  
Somewhere in your code, you are create springs with the makeSpring command. All you need to do is to add the resulting Spring to your ArrayList or Vector:

Code:

// create physics
ParticleSystem physics = new ParticleSystem(5.0, 0.05);

// create ArrayList
ArrayList allSprings = new ArrayList();

// create particles and spring
p1 = physics.makeParticle(mass1, x1, y1, z1);
p2 = physics.makeParticle(mass2, x2, y2, z2);
Spring mySpring = physics.makeSpring(p1, p2, stren, damp, len);

// add Spring to ArrayList
allSprings.add(mySpring);
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