I create a hda, and add a ramp parameter slope_ramp.
for example, i use a heightfield_maskbyfeature node, it have some ramp parameter.


How to pass the hda's ramp parameter slope_ramp to the node heightfield_maskbyfeature1 sloperamp parameter?
And then if i change the slope_ramp, heightfield_maskbyfeature1 sloperamp will change accordingly.

Thanks.

you can either create your HDA ramp parameter by promoting then ramp from internal node (dragging to parameter list or using From Nodes Tab)

OR if you already have both ramp parameters created

on your HDA's Slope Ramp RMB/Copy Parameter
on internal node's Slope Ramp RMP/Paste Relative References

It works, thanks.

The ramp parameter sometimes work, sometimes don't work.
It seems have some bug.

I create a heightfield mask byfeature node, it have a toggle parameter “Mask By Slope”, and a Ramp parametr “SlopeRamp”.




I create a toggle parameter “enable_slope” and a ramp parameter “slope_ramp” for hda.
I use ch(“../../enable_slope”) and ch(“../../slope_ramp”) to connect the hda parameter and heightfield mask byfeature node parameter.

the toggle parameter works, but the ramp parameter don't work.

ChenA
I use ch(“../../enable_slope”) and ch(“../../slope_ramp”) to connect the hda parameter and heightfield mask byfeature node parameter.

it wouldn't work if you just put ch(“../../slope_ramp”) as an expression in there, use one of the mentioned methods as those link the ramp multiparm properly

tamte

ChenA
I use ch(“../../enable_slope”) and ch(“../../slope_ramp”) to connect the hda parameter and heightfield mask byfeature node parameter.

it wouldn't work if you just put ch(“../../slope_ramp”) as an expression in there, use one of the mentioned methods as those link the ramp multiparm properly

Thanks.
When i use “Paste Relative References” it works.
I check the expressions, it's “ch(”../../slope_ramp“)”.

But when i use a foreach in the hda, i need the expressions to be something like
“ch(strcat(”../../slope_ramp“, detail(”../foreach_count1/“, ”iteration“, 0) + 1))”,
“detail(”../foreach_count1/“, ”iteration“, 0) + 1” is the index.

then sometimes the ramp don't work, but the toggle (“ch(strcat(”../../enable_slope“, detail(”../foreach_count1/“, ”iteration“, 0) + 1))”) always work.

because the loop times is variable(read form a json use python), so i can't use the method you mention before.
why can't just use the expression like the toggle parameter?
Thanks.

ChenA

tamte

ChenA
I use ch(“../../enable_slope”) and ch(“../../slope_ramp”) to connect the hda parameter and heightfield mask byfeature node parameter.

it wouldn't work if you just put ch(“../../slope_ramp”) as an expression in there, use one of the mentioned methods as those link the ramp multiparm properly

Thanks.
When i use “Paste Relative References” it works.
I check the expressions, it's “ch(”../../slope_ramp“)”.

But when i use a foreach in the hda, i need the expressions to be something like
“ch(strcat(”../../slope_ramp“, detail(”../foreach_count1/“, ”iteration“, 0) + 1))”,
“detail(”../foreach_count1/“, ”iteration“, 0) + 1” is the index.

then sometimes the ramp don't work, but the toggle (“ch(strcat(”../../enable_slope“, detail(”../foreach_count1/“, ”iteration“, 0) + 1))”) always work.

because the loop times is variable(read form a json use python), so i can't use the method you mention before.
why can't just use the expression like the toggle parameter?
Thanks.

Yeah, the ramp parm is buggy with multi-parm block / for loop. So I just replace it with VEX chramp to direct get the ramp from the parameter panel.
The Import Block is not work well with multi-parm block / for loop as far as my experience.

EricSheng

ChenA

tamte

ChenA
I use ch(“../../enable_slope”) and ch(“../../slope_ramp”) to connect the hda parameter and heightfield mask byfeature node parameter.

it wouldn't work if you just put ch(“../../slope_ramp”) as an expression in there, use one of the mentioned methods as those link the ramp multiparm properly

Thanks.
When i use “Paste Relative References” it works.
I check the expressions, it's “ch(”../../slope_ramp“)”.

But when i use a foreach in the hda, i need the expressions to be something like
“ch(strcat(”../../slope_ramp“, detail(”../foreach_count1/“, ”iteration“, 0) + 1))”,
“detail(”../foreach_count1/“, ”iteration“, 0) + 1” is the index.

then sometimes the ramp don't work, but the toggle (“ch(strcat(”../../enable_slope“, detail(”../foreach_count1/“, ”iteration“, 0) + 1))”) always work.

because the loop times is variable(read form a json use python), so i can't use the method you mention before.
why can't just use the expression like the toggle parameter?
Thanks.

Yeah, the ramp parm is buggy with multi-parm block / for loop. So I just replace it with VEX chramp to direct get the ramp from the parameter panel.
The Import Block is not work well with multi-parm block / for loop as far as my experience.

You use vex chramp to set the ramp parameter of a node? How?
Or you just get the ramp value in vex node?
Thanks.