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Ransom

How do you do Force dynamics in R14?

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Guest Harrybee

Hi,

 

you could set the Linear Velocity Threshold to 0 on the dynamic tag of the can.

 

CU.

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  • Hi,

     

    you could set the Linear Velocity Threshold to 0 on the dynamic tag of the can.

     

    CU.

     

    Wow, that actually fixed the problem perfectly! Would you be able to explain why this made a difference, please? Just so that I'm a bit wiser from the experience :)

     

    Cheers Harry!

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  • Just noticed one more thing. The force seems to be applied constantly after the initial impact. How do I have it just hit once and then stop applying the force? My can is going everywhere!

     

    Thanks again.

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    Guest Harrybee

    Hi,

     

    you could move your mouse pointer over this 'Linear Velocity Threshold' field and press Cntr + F1 to get the C4D help about this field.

     

    Regarding your 2nd question

    You could key this threshold field, e.g:

    1) Frame 0: 0 cm,

    2) Frame 199: 0 cm

    3) Frame 200: your original value

    (Maybe you must play with the frame key set for 2) and 3) to get a proper result )

     

    This will deactivate the dynamic for this object beginning at 3) if there is no movement under the threshold value during 2 seconds.

    BTW: A '0' in this field deactivates the threshold function and the dynamic will not deactivated after 2 seconds.

     

    CU ;-)

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    on R15, doesnt work for me past 150 either.

     

    why not just do it with initial velocity. and keyframe dynamics enabled?

    bottle dynamics.c4d

     

    Got carried away and made more simulations :) 

    soft bottle dynamics.c4d

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  • Hi,

     

    you could move your mouse pointer over this 'Linear Velocity Threshold' field and press Cntr + F1 to get the C4D help about this field.

     

    Regarding your 2nd question

    You could key this threshold field, e.g:

    1) Frame 0: 0 cm,

    2) Frame 199: 0 cm

    3) Frame 200: your original value

    (Maybe you must play with the frame key set for 2) and 3) to get a proper result )

     

    This will deactivate the dynamic for this object beginning at 3) if there is no movement under the threshold value during 2 seconds.

    BTW: A '0' in this field deactivates the threshold function and the dynamic will not deactivated after 2 seconds.

     

    CU ;-)

     

    Hi Harry, thank you for the explanation. I didn't understand what Linear Velocity Threshold was before, and now I do! I've tried applying your technique to my scene but the drinks can just keeps zooming around my scene after it's landed. Would you be able to take a look and see why that might be, please?

     

    Thanks for taking the time to make those files for me Vozzz, I appreciate that. Sadly if I remove the big wall you placed behind the can, it seems to keep moving continuously once it lands on the floor, which is the same problem I'm having already :(

    dynamics-help.c4d.zip

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    increase friction of can and floor to 90% and it will stop.

    bottle dynamics_0001.c4d

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  • Thanks Vozzz, that's perfect. For anyone that might read this thread in the future - if you're a rookie like me, using the settings in the Dynamics tag is the easiest way to achieve a simple force. I'm sure Xpresso offers a lot more, but if you want to avoid getting in to complicated processes, stick with the Dynamics tag for this.

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