Controling scale along a curve?

[Fioxman]

Hi everyone,

I'm learning houdini, and i want to do a very simple thing but i have no clue how to do it.

 

I'm have a curve with 20 points (for exemple), i copy a sphere on the points, so i have 20 spheres, but i want to control the scale of the spheres with a ramp.

To increase the scale at the begining and decrease it at the end.

I'm still searching, but if someone can help me a bit.

Thanks.

[Sepu]

This is one way to do it in the resample Sop you could also use a UV Texture Sop and put in rows and columns as well and make sure attribute class is points and instead of using the @curveu you will use @uv.x Anyway here you go.

scaleAlongCurve.hipnc

[Fioxman]

Hi Sepu,

Cool, I understand, thank you for your help!!

[tamagochy]

float grad = @ptnum/(@numpt-1.0);
float ramp = chramp("ramp",grad);
f@pscale = fit01(ramp,chf("pscale_min"),chf("pscale_max"));

paste it to point wrangle

you can use ramp for controlling scale

 

[Fioxman]

Thank you Tamagochy,

it's even simpler in vex!!

Now i know how the "curveu" attribute is created in the resample node. I don't need it anymore.

Thanks again!