# anicg

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## Posts posted by anicg

1. ### Fuse with no gaps

I need to properly fuse these lines of bricks so that after bending I do not have gaps, but at the same time I want to keep the offset of bricker polygons. Any idea?

2. ### beginner question: invert mask

I can't find a heightfield node to invert a mask, any idea how to do that? if it's not in a node, can I do it with vex, something like mask=-mask? how would you write it? and is it in an heightfield wrangle?

3. ### orientation when copying to points

many thanks, it works like a charm using the point vop and quaternion, although I didn't understand what is really happening.

4. ### orientation when copying to points

When I copy ( a circle) to points on another circle, and the number of divisions is high (e.g. 50), I get the impression the orientation works fine.

But in reality, the shape is twisted. So when I reduce the number of divisions to say 5, I end up with an obvious twist.

I used the cross product of the position with the up vector for orientation.

I need the shape not to twist, any idea?

5. ### From 9 primitives to 1 primitive

I have a shape that has 9 primitive, I need the whole thing to become one primitive only, which node should I use?

6. ### bbox (beginner question)

Thank you. I guess for a box it would be ch("sy") instead fo ch("rady")

7. ### bbox (beginner question)

1 hour ago, mald said:

Hi anicg

If you start with all the objects at the origin then you need to move the sphere centre in Y direction using the expression  bbox("../box1", D_YMAX) + ch(rady). This moves the sphere on top of the box.

Then for the torus you need to move the torus centre in Y direction using  bbox("../sphere1", D_YMAX) + ch(rady).  This moves the torus on top of the sphere.

Thereafter, you can alter the y parameter of the sphere and torus and they will stay on top of each other.

Cheers

Mal

Thanks, I get an error for the ch(rady): it says
Warning

8. ### bbox (beginner question)

It's quite a beginner question: how do I use bounding box information to let the sphere come exactly on top of the box, and the torus on top of both, in a way that when the size changes they all stay on top of each other. Thanks

9. ### Are these UDIM tiles correct?

I have 20*2, each 2 are (2 sides of the same plane, copied 20times) are supposed to show up in a rectangle. The first 9 seem to do it well, the other 11 (2nd row) are getting too cozy and want to share the rectangles with each other.

Am I doing something wrong?

thank you

11. ### use a Bounding object? possible? to group or delete?

I know there bounding box or bounding spherem but what if I want to delete or group based on an object. The object I want to use as bounding "box" is the same as the object I want to impact but smaller.

12. ### Any idea what is going on in the mesh?

Any idea what is going on in the mesh? I've tried fixing the normals with normal sop, facet sop, didn't help. Have you come across this before? what is it?

13. ### Bounce trees with explosion

I liked this effect of trees bouncing as the heavy explosion happens (though I would tone it down a bit), but I'd like to know how you would go about doing it in Houdini if you have SpeedTree trees. He did it in C4D:

14. ### Make a turntable

I found a very old tutorial (2010) ad I'm wondering if there is a better/faster way to make a turntable of a simulation

15. ### affect all except a group

I know how to target a group, but how to protect it? in this case not group 1, how do I write it?

Thanks

17. ### Offset points

I need to offset points, point number 5 needs to become number 10 for example, like moving the position of the starting point 0.

There is a node that has this, I don't remember

18. ### Why is the circle born with inverted normals?

Can someone explain why the circle is born with inverted normals when orientation is ZX Plane, in both H17 and H17.5?

19. ### Cache heightfield erosion?

The erosion node is the last on the network graph and every time I reopen the file everything starts recalculating. I've already frozen the erosion node on the frame I want, but I would like to store the result of the node on disc and reload it to continue from there.

Any idea which node to use to cache the erosion? (up till now the terrain is a volume, not yet converted to polygons.

20. ### Uv before or after bending

I have an individual object that I need to copy to get a long shape that I will bend to make it circular.

After the bend the external side is stretched and the internal is squeezed.

Would you make the UVs at the individual object level? or for the full circle of multiple objects?

21. ### TOPs: cook everytime the file is closed and reopened?

I have a few TOPs that save process and save geometry to disc. It takes some time for that work to finish. Do I have to recook the TOPs everytime the file is reopened? It was saved and geometry is still on disk.

Many thanks.

23. ### Create a separate group each connected piece

I have a "for-each connected piece" loop and want to use SOP group to create a different group for each connected piece.

How do I deal with the group name to make sure it's different for every connected piece?

24. ### Is there a way to import colour into cop2net?

Is there a way I can get the colour from the Heightfield Quickshade into a cop2net. I've tried sop import but it only cares about the heightfield planes (height, sediment, debris...), but I need the colour.

The real objective is to get that quickshade result out of Houdini. I couldn't do it with a heightfield output, so I thought I should try via the cop2net. But first how to get it into the cop2net?

25. ### How to edit a default preset node?

I found this in a quick shade and I'd like to edit it (change some stuff), how do I enable it? (it's all greyed out)

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