I was hoping someone can help. In the attached image specifically near the end of the screen cast there are areas of light green. I'm using a maskbyfeature sop after a DOPImport to get these color values.

How do I calculate the angle of the slope of the areas which are green and create an attribute on those areas while having control over the angle of the slope of those areas as the maskbyfeature creates a float attribute. In other words, if the slope attribute is too steep; and it's calculating the slope around those green areas then don't create an attribute for those areas otherwise create the attribute for those areas ?

Attribute Remap SOP and remap your slope based mask to produce values only in areas you want

tamte
Attribute Remap SOP and remap your slope based mask to produce values only in areas you want

Except this sop adds these ugly edges; I tried attribute blur but no success ?

Those "ugly edges" seem to be consistent with your original data set.
You could paint a mask along the sides to filter them out...

Cheers,

rafaels
Those "ugly edges" seem to be consistent with your original data set.
You could paint a mask along the sides to filter them out...

Cheers,

How is this possible without using attribute paint as in procedurally ?

Feed your geo into a bounds SOP;
Group the top and/or bottom faces of the box using the normal direction and delete them;
Use the ray SOP to calculate the distance from your geo to the bounding box's sides;
Attribute remap the distance value to your liking and multiply the resulting attribute by the slope.

OR

attribute paint a mask!

Cheers,

rafaels
Feed your geo into a bounds SOP;
Group the top and/or bottom faces of the box using the normal direction and delete them;
Use the ray SOP to calculate the distance from your geo to the bounding box's sides;
Attribute remap the distance value to your liking and multiply the resulting attribute by the slope.

OR

attribute paint a mask!

Cheers,

I have to create two groups, based on the normals (keep by normals) enabled; then I have to set one vector to 1, the other to -1 for each group create sop. Too bad one cannot do this in one group create instead of two.

Then using raycast sop, I cast the rays against the deleted primitives and the maskbyfeature node and this is where I don't see any results before feeding into the attribute remap distance sop ?

Sorry, I didn't have Houdini near me when I first wrote and then I've been too busy to check back on this.
I'm attaching an example file of what I meant, only I'm using curvature instead. Hope it helps!

Cheers,

rafaels
Sorry, I didn't have Houdini near me when I first wrote and then I've been too busy to check back on this.
I'm attaching an example file of what I meant, only I'm using curvature instead. Hope it helps!

Cheers,

Image Not Found

The scene helps but in my case I'm using a DOPImport and it's not translating this is my node graph hoping it helps as I'm not seeing any results from the dist attribute ?

_Christopher_
The scene helps but in my case I'm using a DOPImport and it's not translating this is my node graph hoping it helps as I'm not seeing any results from the dist attribute ?

Switch the order of the nodes going into the Ray SOP. What I sent you was a potential solution for the "ugly" edge artifacts you mentioned here [www.sidefx.com], nothing more.

Cheers,

rafaels

_Christopher_
The scene helps but in my case I'm using a DOPImport and it's not translating this is my node graph hoping it helps as I'm not seeing any results from the dist attribute ?

Switch the order of the nodes going into the Ray SOP. What I sent you was a potential solution for the "ugly" edge artifacts you mentioned here [www.sidefx.com], nothing more.

Cheers,

I did switch the order based on the graph seen above I placed the right side into input1 of the raysop and the left side into input2 of the raysop; it still is not recognizing the dopimport in relation to my original question as there is not values for the dist attribute.

Edit
What I think the issue is that ray sop does not work with dop imports it doesn't know how to calculate the hit attribute. Unless there is way I'm guessing that I have to cache it out ?