There's an error with the attribute vop.

[fresiaa]

Hello guys.

 

Why is there an error in the attribute vop?

It's houdini 18.

solver_xyz_dist.hipnc

[anim]

you simply didn't delare dist_max variable, so it's invalid

also why are you using Attrib VOP if all you are doing is writing a snippet like Wranlge? You'll run into more issues, like you have to define Bindings to Export etc, which you haven't and your ramp parameter is nonexistent so it can't sample it

so maybe for start just use Wrangle and declare dist_max variable either as constant number or parameter value

Edited April 10, 2020 by anim

[anim]

something like this:

int near_prim ;
vector near_uv ;
float dist_max = chf("dist_max");

float near_dist = xyzdist(1, v@P, near_prim, near_uv, dist_max) ;
if (near_prim != -1) 
{
 float near_dist_normed = near_dist/dist_max;
 float ramp_val = chramp("ramp",near_dist_normed);
 vector color = {1,0,0};
 v@Cd = lerp(v@Cd, color, ramp_val);
}

 

solver_xyz_dist2_fix.hipnc

[fresiaa]

34 minutes ago, anim said:

something like this:

int near_prim ;
vector near_uv ;
float dist_max = chf("dist_max");

float near_dist = xyzdist(1, v@P, near_prim, near_uv, dist_max) ;
if (near_prim != -1) 
{
 float near_dist_normed = near_dist/dist_max;
 float ramp_val = chramp("ramp",near_dist_normed);
 vector color = {1,0,0};
 v@Cd = lerp(v@Cd, color, ramp_val);
}

 

solver_xyz_dist2_fix.hipnc

Thank you so much