You need to use Modify Data
http://www.sidefx.com/docs/houdini12.0/nodes/dop/modifydata [sidefx.com]
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Houdini Indie and Apprentice » negating the effect of a magnet force.
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- Erik_JE
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Technical Discussion » Color Mixing Using Flip
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- Erik_JE
- 299 posts
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Houdini Indie and Apprentice » Expression VOP?
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- Erik_JE
- 299 posts
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Technical Discussion » ? returning a float value in a string
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- Erik_JE
- 299 posts
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circusmonkey
Hi all ,
I have a string parameter with the string of “grp_letter_1” I want to replace the 1 in the string with my own float attribute called $FOO which returns 1 2 3 4 5 6 7 over $NFRAMES etc etc. Currently this fails “grp_letter_$FOO” I seem to remember this is because a string cannot return the value of a float. Can anyone point me in the right direction ?
Rob
grp_letter_`$FOO` should work fine.
Houdini Indie and Apprentice » Q about Houdini Apprentice | First Steps
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- Erik_JE
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I think they will be put up eventually but that it might take some time. That's how it was with the other webinars at least.
Houdini Indie and Apprentice » Difference between render view and render output - why?
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- Erik_JE
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I prefer increasing Shading Quality when rendering with MP instead of going crazy with the sampling on the env and area lights. It usually gives a quicker rendertime with the same result.
Houdini Indie and Apprentice » Difference between render view and render output - why?
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- Erik_JE
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Ahh, I totally switched the pictures in my head. Still looks like a sampling issue tho.
What renderengine do you use for the render output? MicroPoly, raytrace or pbr?
What renderengine do you use for the render output? MicroPoly, raytrace or pbr?
Houdini Indie and Apprentice » Difference between render view and render output - why?
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- Erik_JE
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I am failing to see the problem/error. In the render view you don't sample the env light as much as in the final render, hence when a sample hits a very bright spot of the hdr it can have a huge impact on that pixels value and therefor you get the noise.
Houdini Lounge » CPU Build
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- Erik_JE
- 299 posts
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Buy a i7 2600k, some decent asus motherboard 16gb ram and a 2gb gtx 560ti and you have a pretty good rig for not as crazy much money.
Houdini Indie and Apprentice » Render artifact
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- Erik_JE
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http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&p=92329&highlight=&sid=8ce0dd718e12ad786af4ba7e2f7f2edd [sidefx.com]
This explains how to gamma correct the texture inside of the shader.
This explains how to gamma correct the texture inside of the shader.
Technical Discussion » Control a Fluid simulation with Wind forces ??????????
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- Erik_JE
- 299 posts
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Does this question need more questionmarks???????????????????
Also, yes, you can use Wind. Just pop it into your popsolver as Manu wrote.
Also, yes, you can use Wind. Just pop it into your popsolver as Manu wrote.
Houdini Indie and Apprentice » Rendering PyroFX Simulations on
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- Erik_JE
- 299 posts
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Houdini Indie and Apprentice » Control scattered points with texture
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- Erik_JE
- 299 posts
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Houdini Indie and Apprentice » Control scattered points with texture
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- Erik_JE
- 299 posts
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You can use an attribute as scatter density on the scatter node. You can create that attribute with a texture lookup in a VOPSOP.
Technical Discussion » Split volume with rules in subvolumes
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- Erik_JE
- 299 posts
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A volumeVOP with volume sample vop inside would work nicely for that task.
That is if you by delete mean set value to 0.
That is if you by delete mean set value to 0.
Houdini Indie and Apprentice » about the fluid emission ...
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- Erik_JE
- 299 posts
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Do you have some more info what a “splash emitter” is for people that don't use Realflow?
Houdini Indie and Apprentice » [help] vertical distance of a pt on surface to edge of surf
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- Erik_JE
- 299 posts
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Same problem.
You can probably get the closest polygon and by that at least knowing which one the point is in but how do you know which polygon is the top polygon.
You can probably get the closest polygon and by that at least knowing which one the point is in but how do you know which polygon is the top polygon.
Technical Discussion » Audio Drive-Liquid Object (Procedurally)???????????????
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- Erik_JE
- 299 posts
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Check out Peter Quints tutorial on music driven animation. Some of the techniques can be applied on SPH/FLIP particles as well.
http://vimeo.com/6931106 [vimeo.com]
http://vimeo.com/6931106 [vimeo.com]
Technical Discussion » copy sop doesn't work the way I want... :'(
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- Erik_JE
- 299 posts
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Here you go.
You need to have your object aligned with the Z axis for it to align correctly with the point normals of the box.
You need to have your object aligned with the Z axis for it to align correctly with the point normals of the box.
Houdini Indie and Apprentice » [help] vertical distance of a pt on surface to edge of surf
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- Erik_JE
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asnowcappedromance
well you can just take the point in the upper left corner, take it's y position and subtract it by the red points y pos which will give you exactly what you want!
Manu
The problem is probably more figuring out which point that is and even then its not correct because there is no way to guarantee that the two top points are at same Y height and if it differs you can not just use one of the points.
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