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thebrettwalter

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About thebrettwalter

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  • Birthday 07/02/1986

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    Brett
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    Australia

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  1. commenting to keep in recent activity. I have done a bit of kinect through cycling74-max and processing but haven't come up with a node graph for max or come across a library for proc which will allows me to export the point cloud sequence for use in houdini. //edit// looks like there is more online about this nowadays than in previous years. (it's been a while)
  2. Done something kind of similar sounding in the past but I didn't go with flip. I don't have houdini open right now, but off the top of my head, you could try ripple solver on a grid and then extrude volume the cache. If extruding your rippled grid is messy you could ray a highish poly grid onto the cache for tidier collision surface geo, then volume extrude the rayed grid and cache (You may not need to extrude if your polys allow for surface collision instead of volume on your static object dop node). Plug it into your sim as a static deforming object. You could then popsolve points down from above which land onto the ripple/undulating surface, which instance packed rigid body objects. If you definitely need flip though, this approach may not be so useful.
  3. RBD on fast moving collider

    can you time warp the geo so that it bends over more frames, run your sim with lower force values, then time warp everything back to normal?
  4. Growing effect issue

    there are a couple entagma tuts on mesh and line growth, if you haven't already, i'd suggest checking those out
  5. Recreating cotton candy in houdini

    you could try getting the shape you want for the cotton candy by drawing a curve, using the point numbers to store a directional vector, then sweep pscale ramped circles along the curve, mesh the output, convert it to a volume, scatter points inside and transfer the curves directional attribute to these points. Give the points another attribute which uses the gradient of the volume they are inside so they have a second vector which points outwards, this could then be used as the cross product of their inherited upwards direction to angle the vectors so that they spiral around and up the curve, like in some tornado tutorials you may have come across. You could then use a volume trail to get your strands from the points. Up the point count and control the pscale of your points before rendering. I'd probably start with something like that.
  6. Matte/Alpha rendering

    Thanks heaps!!!!
  7. Matte/Alpha rendering

    Hi, For a school project I have made a FLIP sim that enters the scene when a door opens. The project has been 3Dcamera tracked, matchmoved and model-built to sit in the shot nicely. I am wondering what the pathway would be to render only the visible sim once the door has opened to let the fluid enter the scene. Would there be a material I can put on the door which will act as an alpha that I can use the original plate and as the door opens it is only the exposed sim that renders? I don't know how to set this up, haven't done many complex renders at all. I hope someone can help or at least point me in the right direction. Because my working file has a lot of imported objects I have just uploaded a still frame, hope that's okay
  8. Dead Ends when Following Online Tutorials

    I totally agree and can see your point but what do people do for a work around? Or to learn how to do things in older versions in newer versions? Do users just stick to versions that work for them instead of learning different ways of doing the same things in latest versions?
  9. Houdini Cloud RnD

    This is really nice! Be cool if your video went for longer would you mind sharing your Hip file?
  10. Hey guys, I am using H14 and trying to follow tutorials on youtube/vimeo etc. Most of the tutorials I can get most of the way through until a node operation occurs on the video that my own version can't seem to mirror. I'll use this particular tutorial as an example; everything is fine up until the 27:00 mark where the tutorial guides us to entering a Point Expression into the Sweep Node "Scale" parameter. After entering the expression the tutorial operator is able to use the Scale graph in the VOP SOP to scale points along the curve but on my file only the first point of the graph controls the scale of my Circle Swept Curve. I have used the AttributeVOP instead of the VOPSOP. It is common that I have these kind of things happen, is it worth just using H13 instead of 14? Do other people have these problems? I've included my file in the event anyone should like to take a look, perhaps you'll see what I've done wrong or should have done instead due to the version difference. Thankyou VDB Crack Toolpt1.hipnc
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