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Showing results for tags 'value'.
Found 9 results
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why my while loop just pass the whole 9 times loop result to the last element of my array? ArrayValueIncrementQuestion.hip
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as you can see the code below: i[]@values = findattribval(0,"point","random_number",3); for(int i = 0 ; i < len(@values) ; i++) { if(@ptnum == @values[i]) { @pscale = ch('specific_pscale'); } else { if(@ptnum != @values[i]) @pscale = ch('rest'); } } the second if inside the else doesn't work properly. Specific_pscale.hip -
Hi all So I have a question about the new versions of the For-Each node, particularly the Numbers one, I have been following a tutorial from Anastasia Opera, and during the tutorial she uses a For-Each subnetwork node now I understand what this node is doing collecting the data from the box_id, Anastasia also gave the node a stamp name which will be used a bit later on for a blast node to specifically target some points following the local path hence why the stamp name was given to the For-Each Subnetwork node in order to lead a path towards a node that contains specific points with a number that is less than 3 which I understand is the point number and can also see it infant of me.... but now here is where I get confused in the new version of Houdini 17 the Subnetwork node has been disabled and be re-enabled but instead I would like to understand what on earth is up with the new For-Each Numbers node, it has some weird dodgy layout that just throughs me right off!! I would not mind trying to re-create the tutorial using this new node but its proving to be a challenge as I have no idea where to place the nodes that help in set things up for procedural modelling which I have tried to place things in myself but ended up with nothing but more errors. if someone could please help that would really awesome and I would really appreciate it. Kindly Ahmet .B
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Hey magicians, Been getting crazy with wire solvers. I think the issue is because I get the points changing over time and the constraints go crazy. I've been reading that I need to create a id attribute with $PT to hold the value, tried that with no luck. Animation works fine until the number changes Any tip will be super helpful, thanks in advance.
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Hello there! Kinda new around here; think this is my first post, but lurking in the shadows and reading a lot this forum has been a great resource in learning the tools of the trade with Houdini lately. Well, straight to the point; I'm wondering if it's possible to make a parameter fetch a value from a created attribute. Can't post my network right now, but imagine; I have a IsoOffset, which creates a volume from a Boolean to be read by a Measure node; After that I promote the created Primitive attribute to a Detail attribute and Scatter some points on it. After this, a PopNetwork is created and I want it to emmit from the created points; but I need it to stop when the Volume Detail attribute is over a certain value; I'm wondering if via Wrangle I can do this with an If function, but then again, how would I transfer the final variable value to the Birth Rate Parameter in the Pop Source? I thought of something like this in the Parameter Field `detail("obj/Geometry1/attribpromote1", "VolCut", 0)` but it doesn't seem to work. Any ideas? Kind of noobish, so don't judge me hard on this! Cheers and thanks in advance!
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I have a RBD and I'm trying to set some fractures active and the others passive but I cant access the point attributes in a packed primitive without unpacking it. In my setup I have a foreach node but I cant access each primitive so that I can run the loop. Is this possible or should I set up an unpacked RBD? Access_PackedPrims.hip
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Hello, I'm looking for the best way to prevent an attribute from changing once it has reached a certain value. I'll have other benefits from this, but for now it's to control the "active" state of some points via an animated object. I'm setting a group of point with a bounding sphere grouping, then I wrangle i@active = 1 for that group. but, obviously, when a point is back out of the sphere, it's out of the group and gets a @active = 0 again. I'm wondering if it's doable in VEX (if active becomes 1 then never change again) or if there's other tricks to do that. here is a simple hip file where I move the points up when they are in group1, so for this exemple, I would like the point to never come back down if they get moved. Thank you! I've seen a way to do that in a particle tutorial, where the colours get changed and is then prevent from changing back when outside a box, but I just can't remember, and can't get my hand on that video again : / OD-F_keepattrib.hipnc -
anyone know how can i read a value from a frame number ? for example in frame 40 and want to access an attribute value at frame 20. is this possible to do this via expression ? tnx
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Hey guys, first post here. I'm extremely noob at Houdini and I've got a very basic question. I've got a particle system going, and after the POPs system in the Source Particles SOP it creates, I'm trying to use the Y position of each particle to drive a Blend Sequence that is copied onto the particles with a Copy SOP. What I haven't been able to find is how to query the Y position of my particles. I can find their positions with the Geometry Spreadsheet, but the name of the attribute it gives me is "P[y]", and typing that into an expression doesn't seem to work. I had thought it might be "@P.y" but that errors out as well. I think one of the problems is that I'm not telling Houdini WHAT to find the Y position of. But again, not sure how to find that. I've googled and did a cursory search of the forums here but all the posts I've found are way more advanced than this simple thing I'm trying to find Can you fine gentlemen/ladies point me in the right direction to find how to query this sort of basic data? wk2_copy.hipnc
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