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Found 11 results

  1. Hello everyone, I have recently wrote an inhouse python plug-in in c++ for houdini. H2A is a custom plug-in to export houdini geometry in arnold ass file format to be able to load in mtoa, htoa or c4dtoa. This plug-in exports almost every geometry type to arnold i.e. points, polygons and curves. You can compile or grab the compiled plug-in from: https://github.com/sergeneren/anima/tree/master/anima/render/arnold/H2A P.s. please excuse my sloppy c style
  2. Hello, The effect I'm trying to create is a dragon fire effect, However since I've added new translation to the particle emitter and and container the simulation no longer runs correctly. I believe this is to do with the individual DOP networks yet I'm not sure. Any help would be great since I've been stuck on this issue for some time Thank you Dragon_flames11.hipnc
  3. Hello, I'm trying to get particles to drive a pyro simulation to create a flamethorwer effect. However i keep getting random unexpected motion, I've tried sourcing the velocity of the particles to fix it but it doesn't give the look i want. I've attached my hip file Dragon_flames5.hipnc
  4. Hey everyone! Here's a demo of some point cloud tools I created to calculate concave and convex curvature as well as gradient and curl direction, also sharpening. Forgot to mention in the demo that the curvature calculation is a great way to do differential growth by advection along normal * curve * noise * parm. Also, the curl calculation can be used to make grass patches and groom fur by orienting curves along the direction to add swirly variance. There's a lot of ways these tools can be handy, interested to see what you all come up with! Let me know if you have any questions, enjoy! curveGradientCurlSharpen_v002.hipnc
  5. Hello,I'm attempting to create the slitscan/timeshift effect. I'm creating a vector array in a for loop, each loop has an attrib from map and a wrangle that appends Cd to a vector array. It works when the attrib from map is always reading from the same file. When I change the attrib from map file read expression to anything that has to do with $F or the meta nodes iteration Houdini crashes. I have a test scene that has documentation and even nodes setup to create test frames to work with.If it is a matter of the way that multiple files cannot be read at once please let me know. If someone knows of a better way to read from multiple files at once and/or achieve this effect please let me know. I'm aware that after effects has this effect and uses gradients to determine which frame to look up color from. While that method is great, I'd like to be able to write the gradients/lookups in vex to achieve results. Any help greatly appreciated. -T concept_025_slitScan_v001.hiplc
  6. Where are the example files located? In the Scatter SOP help it says: "See the Door With Polka Dots example" http://www.sidefx.com/docs/houdini/nodes/sop/scatter I can't locate the example anywhere.
  7. Hi, guys. Does anyone know why file_* functions don't work in SOP context? Documentation says that these functions are present in all contexts, but none of them are represented as nodes in AttribVOP, and AttribWrangle says "undefined function". I also did not find one in SHOP context. What I am trying to do is to write custom data to an external file using VEX. I also tried to #include <file.h>, but no luck.
  8. I currently am using a File SOP and a GEO_IOTranslator to read in a custom data file. However, I'd like the user to be able to edit some parameters when reading in the file, so I would like to create a custom File-like SOP. How would I go about doing this? I'm trying to create a SOP based on SOP_Star.C, but that's probably not the best resource. How do I load and read a file? Could you point me at some examples to look at?
  9. Hi all, I have been using the Pipe In chop and recording it with the Record Chop. I am now trying to save the data as a '.bclip' by right clicking the record chop then, save data channels. I get to choose the location, name and type. But when I click accept is says 'save failed: unknown reason'. I have tried all the different formats and saving it from chops further down the line. Also switching on and off the export flag. Has anyone had a similar problem? Is it a licensing thing? Any help would be appreciated. Thanks.
  10. I don't know what to do :S please help im on Houdini 12.5.469
  11. The new feature in Houdini 12 for simulating Pyro clusters is pretty cool and very efficient for the simulation. I'm trying to get the simulation caches back into Houdini (to view and render the results) but I don't see a straight forward way of doing so. I used the "${CLUSTER}" variable in the name for the export ROP that went to HQueue but that only works for the export, not for reading the simulation back in. Am I missing a straight forward way of reading the simulated Pyro clusters back in or is it a one way street to use the "${CLUSTER}" variable and you just make a bunch of file nodes to get them back in?