托马斯·跑步
Something like this?

viklc
Hey, details() expression is for reading intrinsic values, detail("../set_seed", "seed_detail", 0) without "`" work for me. The "grave accent" characters are only needed if, for example the input field is a string and you want to pass an expression. In your case, both the retruned value of the expression as well as the input are integers.

Jonathan de Blok
You can use also use a merge node inside the for-loop. If you set the loop up in feedback mode the merge will add a font output in each iteration.

tamte

HenDaSheng
It turns out that "Spare Input" is a custom parameter interface, and its parameter type directly affects the final effect. This is very new knowledge to me. I will study it carefully and I think it will be used in other places.

here is some info on spare inputs https://www.sidefx.com/docs/houdini/model/compile.html#spare [www.sidefx.com]
they are susally used within compiled blocks as that has many restrictions, but they are useful overall to refer to other nodes without having to type the path to the node in every expression

animatrix_
You can also do this without a for loop network using some VEX:

string pos [ ] = { };
int count = npoints ( 0 );

for ( int i = 0; i < count; ++i )
{
    vector p = point ( 0, "P", i );
    append ( pos, sprintf ( "%s", p.y ) );
}

s@pos = join ( pos, "\n" );

Then read the string attribute from the Font SOP:

`details(-1, "pos")`

HenDaSheng

坦特
something like this

This completely solved my problem.
This is the first time I know how to use font node -> Spare Input. Thank you very much for your help!

坦特
something like this

巴巴杰

HenDaSheng
Thanks a lot for your help, can I have a look at your modified houdini file, I'm very new to Motion Fx.

I'm using your file, there is no modification other than what is in the sreen shot.

Just bring up your motionfx window and make sure the object2/3 nodes have there flags set(blue)- so it shows up in your graph.

巴巴杰

HenDaSheng
Can you explain in detail how to manually modify it(I found that clicking on the curve in the Motion FX view does nothing)?

Manually in graph or directly with parameter.

BabaJ

HenDaSheng
Thanks, I tried modifying the options here, but it still doesn't work.

You didn't change the start/end range of your objects.

Bring up your motionfx window and enable the objects view to see where they are established; From which ever way you decided to have them set up by.(works for me if I manually adjust the range).

巴巴杰
If you're going to be going back and forth between changing frame rates you have to decide whether or not you want to keep the keyframes at the same frames with the 'Keep Keys on Current Frames' option.
But you also have to go back to your chops objects and adjust the start/end range too.

Simon Russell
if you look under the channel tabs, set the sample rate to your fps and set the channel length as long as you need it... it should fix it. look in your motion channels viewer to see what you're doing