Would like comments on a project of mine.

It has spring, summer, fall, winter trees created with Processing. Check it out at http://www.stagnesphx.org/computerlab/quiz/trees/index.html
if you check out the source code you will see I give credit to Carlos Nazareno for his Fire and Forget Broccoli Tree Bomb program.

I wanted something for elementary school student to use to quickly draw trees for the four seasons so I modified his code for thicker trunks and changed the colors of background and leaves.

Any suggestions for improvements?

What about using the zbuffer so trees in the background are drawn behind trees in the foreground?

Marcello

The key ideas are change your code into orthographic 3d, then use the z coordinate to layer your various objects.

You can do the former by passing P3D into your size() function then calling the "ortho()" function.  Orthographic will disable perspective modes and prevent objects from automatically getting smaller (and approach the center) when they have a lower z value (alternatively, you could recode your entire program in full 3d, but it gets more complicated when converting mouse coordinates to a point in 3d space).

Then, before each tree/cloud draw to the screen, you could call resetMatrix() and translate(x,y,z) method to change the current transformation to the z position of your liking.  Since translate is relative, you would likely leave x and y at 0, and only set the z translation.

Marcello