Outputting geometry on 2s

[zjie]

Hi guys, so right now I need to do a cloth simulation and export it out on 2s. So what I have thought of is, simulate the cloth as per normal, then for the result, for every 2 frames the points will take it previous frame's position, does anyone know how could I realize it?

Thanks!

[Noobini]

this ?

 

vu _on2s.hipnc

Edited April 16, 2020 by Noobini

[Noobini]

3s ?

vu _on23s.hipnc

[zjie]

Hi Noobini, for your example, the points are still moving every frames, when I wanted to achieve is actually a stepped animation, if it is an mocap, it will be to delete keys for every two frames and use a stepped curve, so every second frame should be a still.

[zjie]

The animation curve should be something like this 

Edited April 17, 2020 by zjie

[zjie]

Let me know if it is not clear, but I am really grateful for your help!

 

Edited April 17, 2020 by zjie

[Noobini]

looking at the anim curve shape is a mistake.

the curve could be a linear line going straight up, say. but it does NOT show the effect of time shift.

tell me between frame 1 and 2, does it move ? NO

between 3 and 4 does it move ? NO

between 5 and 6 does it move ? NO

.....

....

so NO it doesn't move every frame. It moves between PAIRS of frame...which is on 2s

[Noobini]

if you don't believe me go have a look at the HDA i posted where it hold for 8 frames....you cannot tell me it moves every frame there.

[zjie]

Chill chill, in the file vu _on23s.hipnc that I have downloaded, it is using a merge node, but once I changed it to switch node with the expression, it works! Thanks again.

[Noobini]

lemme guess, you're on 17....a lot of H18 nodes are mysteriously interpreted as 'merge'....ask SESI.

just use the HDA I posted recently, that's a more universal solution than the hold 2 or 3 that I gave you earlier.

[zjie]

Ah I see, yeap I'm using houdini 17.