Forest Pack > Forest Pro (*)

Flickering in frame from map

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CQ2828:
Hi,

I am using the frame from map from the forest pack to represent grass swaying in the wind.
The map uses a gradient ramp, but flicker occurs where the map switches between black and white. Is there a way to solve this problem?
Please see the attached file.

The geometry is a looping animation from 0-100.
The gradient ramp also cycles from 0-100.
I am using 3dsmax 2022 and Forest Pro 7.3.1

Paul Roberts:
Looks like something to do with the interpolation of the gradient. Would you mind uploading that sample scene so I can take a closer look.

Thanks,
Paul

CQ2828:
Hi,
I have attached the scene file.
Please check it out.

Paul Roberts:
Thanks for the scene. I think in this case it's a simple case of maths. The frame from map feature controls the playback using the greyscale value of the map. This means you could potentially have 255 full frames. In,  this case there are 99 frames being sampled which doesn't divide well into 255 (theoretically a new animation sample every [2.5757,2.5757,2.5757]  RGB). So I think it sometimes skips or adds samples here and there due to rounding and causes a small stuttering effect.

Changing the animation and the number of samples to 128 might help to smooth it out.

Best,
Paul

CQ2828:
I have received the attached file. Thanks for your support, it is much appreciated.

But I'm sorry, but this may not be the problem I am thinking of. Can you confirm the flicker that occurs when the black and white border passes?
I have attached file.
I am experiencing this problem here in the scene file I received.

thanks.

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