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View Full Version : problem modeling soccer ball (or football, depending where you're from)



fig
10-31-2003, 09:32 AM
i'm working on creating a photoreal (or as close as possible) soccer ball in LW 6.5, i found a nice tutorial at http://www.panebianco3d.com/e_tut-soccerball.htm but i can't get it to come out quite right, i keep getting slight gaps at the places where the corners of the panels meet as you can see in my test render:

http://www.tangentoriented.com/misc/testrender05.jpg

i've tried adjusting my smoothshift angle and not merging points as someone suggested but still get this result, my initial try with merging the points w absolute at 3.5mm resulted in only a few points deleted and a lot of 2-point polys. any info on how to avoid/rectify this problem? thanks.

chris (fig)

thekho
10-31-2003, 09:59 AM
Could you show your wireframe as well? That's maybe help. We can see thats you have a problem with it and we'll help you.

fig
10-31-2003, 10:21 AM
you bet, its rather dense tho so i don't know that you can see a whole lot. i'm totally fine with remodeling it if someone knows where i went wrong, just don't know where that was :) thanks.

http://www.judjohnson.com/misc/wireframe.jpg

chris

thekho
10-31-2003, 10:45 AM
Mmmm, your football model looks so fine.

Stewpot
10-31-2003, 05:40 PM
It looks like the subpatching is causing the sharp corners to be rounded off.

Hope that points you in the right direction, since if you want to subpatch it, I am not sure without working through it how to prevent the rounding.

Matt
10-31-2003, 05:55 PM
probably not the best solution as it might screw up the flow around where you're trying to fix, but you could try adjusting the Sub-Patch Weight in those areas.

Lightbase
11-01-2003, 05:27 AM
Here is a very old work by my friend. If you like it I can send you a tutorial for it.

fig
11-01-2003, 12:08 PM
thanks a bunch guys. matt, what you mentioned is exactly what i've been playing with. i've adjusted the point weights some and can get the corners more defined but it does seem to disturb the flow of the polys a bit, i'm not sure if it will be noticed for the final resolution of this shot or not (note: only some of the points have been adjusted so i can see the difference).

http://www.judjohnson.com/misc/ball_tweak.jpg

lightbase, if you could send me a tutorial for that it would be GREATLY appreciated, if nothing else just to some other ideas on how i could set things up, i haven't even started figuring out the texturing yet :) thanks.

chris

Lightbase
11-02-2003, 06:24 AM
I've send tutorial and soccer ball.lwo as well, you can use it if you want.

Good luck!!!

Lightbase

Lightbase
11-03-2003, 05:44 AM
Modeling Ball
Layer 1:Construct - Additional - Platonic - Icosahedron
Layer 2(Layer 1 Background):Construct - Additional - Platonic - Dodecahedron
Size(Factor 102.25%)
Boolean - Intersect - Merge(Automatic)
Copy Layer 2 and paste in next layer(Layer 3)
Layer 3:LW_MetaFormPlus(Subdivision Level 2) - Spherize(Modify - Deform) - Size (85%)
Poligon Statistics (select Dodecahedron surface) - Rename Surface(Soccer Ball_Black) - Deselect
Poligon Statistics (select Icosahedron surface) - Rename Surface(Soccer Ball_White)- Deselect
Poligon Statistics (select Soccer Ball_Black surface) - Cut - Paste into next Layer(4)
Layer(3): Select polygones(see pic) - Cut - Paste Layer(5)
Layer(3): Smooth Shift(Offset 1 cm , Max Smooth angle 44.95)
Layer(4): Smooth Shift(Offset 1 cm , Max Smooth angle 44.95)
Layer(5): Smooth Shift(Offset 1 cm , Max Smooth angle 44.95)
Activate Layer(3), (4) , (5) - Cut
Layer(3): Paste - Merge - LW_MetaFormPlus(Subdivision Level 1) - LW_Fast-Triple-Fan
Size(Factor 0.3/1.7*100)


Thats all.

fig
11-03-2003, 09:41 AM
very cool, thanks a bunch lightbase :)

it looks like tweaking the point weights at the corners of each patch has given me a decent result:
http://www.tangentoriented.com/misc/final_model.jpg

now i just need to figure out the texturing on the darn thing :D

chris