Animate and roll a ball the correct way in blender.

Рет қаралды 31,196

Күн бұрын

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Пікірлер: 43

@knottt 3 жыл бұрын

This is the best way I could found, solved a big problem for me! Thank you sooooo much!

@verocalux 2 жыл бұрын

Good Teaching and Good Explanation every Details

@RobertShane 2 жыл бұрын

Your expression can be simplified. You're basically doing 2 / diameter but since diameter = 2 * radius the twos can cancel out. The simplified expression is -curve_length / radius * (eval_time / eval_max).

@lekkerfruit2208 2 жыл бұрын

what is the radius. I got the error F-Curve with path 'eval_time[0]' cannot be keyframed, ensure that it is not locked or sampled, and try removing F-Modifiers.

@robinsquares 3 жыл бұрын

-2*curve_length/diameter*(eval_time/eval_max)

@hacpoa_agent_143 4 ай бұрын

thank you so much

@faustoart 2 ай бұрын

really cool approach

@Honey_Tabby 5 ай бұрын

For anyone trying to use a path and the calculate length isnt working go into edit mode, right click path and select set spline type to bezier, you may need to subdivide it.

@FilmSpook Жыл бұрын

THANKS, Great Tutorial, my Brother, and cute cats you have there. 🙏🏾

@Coastfog 2 жыл бұрын

I found this driver earlier but just couldn't make it work. It was a tiny but essential bit I missed, and you led me in the right direction. Have my gratitude & my sub!

@sarahashemi6521 9 ай бұрын

Thank you very much for this nice tutorial. I also like your cat ❤

@frenkyb123 2 ай бұрын

Thanks. Very very good explanation.

@hanneshuber3d 3 жыл бұрын

Thank you so much!! Just discovered your channel, awesome quality content! Love it

@motionfigura 2 ай бұрын

you just saved me from a lot of time calculating physics

@tongenproduction3646 2 жыл бұрын

Thanks for good lesson I got learned something

@dileeshaabilash5562 2 жыл бұрын

thanks bro best tut ever

@sewwandisenevirathna9508 3 жыл бұрын

Thank you very much. This helped me a lot in my university assignment. Although the accent was a bit hard to comprehend at times, it was clear and easy to follow. P.S. that cat behind you is absolutely adorable

@3Dschool-David 3 жыл бұрын

I didn't know my accent was that thick hahaha!

@plcreator483 Жыл бұрын

I can't even find the Edit button at 7:43 on my blender

@emanak2810 9 ай бұрын

I have found that a division of 25 as the eval_max makes the ball roll smoother on blender 4.0

@Najim_R 3 жыл бұрын

This was exactly what I needed! Thanks! One question, afther you did all that can I still edit the curve at the end , like make it longer.. or do I need to update the curve length in the code again ?

@3Dschool-David 3 жыл бұрын

Yeah, just update the curve length and you are set.

@lekkerfruit2208 2 жыл бұрын

F-Curve with path 'eval_time[0]' cannot be keyframed, ensure that it is not locked or sampled, and try removing F-Modifiers." help!

@themoonman8953 3 жыл бұрын

Very nice Video. Thank you 🙏

@daniel_a.m. 4 ай бұрын

thanks man!

@aliensoup2420 3 жыл бұрын

Well presented, but of course, there is no subjectively "correct" way to roll a ball - the correct way is whatever works for your intended animation. But if you want to be anal about it, this is not the physically correct way to animate a rolling ball in any direction, because a ball does not steer itself around a path. There is no forward direction or orientation for a ball, it just changes its apparent rotation axis depending on the forces placed upon it, which is impossible to do in animation without using quaternions (or a physical simulation, which uses quaternions). I am surprised to see a "Curve Length" utility finally made its way into the interface. That is quite helpful.

@Krzyh4 Жыл бұрын

When I click button to calculate curve lenght nothing changes :( If I make a new curve it can calculate it, but if I convert mesh to curve it cant. Any solutions? :(

@BlueGuy078 12 күн бұрын

+1 for the cat

@sandan3 10 ай бұрын

thank you!!

@lovelylonerboy7156 Жыл бұрын

Can you make the curves anything

@впередиспесней-ы2б 2 жыл бұрын

How it works with circle curve?

@vyskochill487 Жыл бұрын

why my ball is bouncing instead of peacefully rolling?

@sebastianb3345 Жыл бұрын

Thx.

@starsky29200 2 жыл бұрын

merci pour ce tuto. ça fonctionne bien ;)

@natasha4695 3 жыл бұрын

how did you get to the formula? Where does -2 come from? Halp!

@natasha4695 3 жыл бұрын

I managed to get it to work, but would still give you a cookie if you tell me about -2

@RobertShane 2 жыл бұрын

@@natasha4695 The 2 comes from the fact that he didn't simplify the expression. He's doing 2 / (radius * 2) which simplifies to 1/radius. The negative comes from him using a positive 100 at the end instead of a negative.