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Everything posted by Sumit

  1. 4 wheeled vehicle along a curved path

    Off the top of my head I can think of this for easiest and fast solution. Constraint only the front wheels hub rotation to the path and move the rear wheels in direction of center of front hub.
  2. from what I see, your vel is coming from vel[1] -= timestep * 9.80665f; on first frame its -(1/24) * 9.80665 = -0.40861 timestep will evaluate in first frame too, official might have something else.
  3. https://en.wikipedia.org/wiki/Robinson_projection The projection is defined by the table: Latitude PLEN PDFE 00 1.0000 0.0000 05 0.9986 0.0620 10 0.9954 0.1240 15 0.9900 0.1860 20 0.9822 0.2480 25 0.9730 0.3100 30 0.9600 0.3720 35 0.9427 0.4340 40 0.9216 0.4958 45 0.8962 0.5571 50 0.8679 0.6176 55 0.8350 0.6769 60 0.7986 0.7346 65 0.7597 0.7903 70 0.7186 0.8435 75 0.6732 0.8936 80 0.6213 0.9394 85 0.5722 0.9761 90 0.5322 1.0000 The table is indexed by latitude at 5 degree intervals; intermediate values are calculated using interpolation. Robinson did not specify any particular interpolation method, but it is reported that he used Aitken interpolation himself. The PLEN column is the length of the parallel of latitude, and the PDFE column is multiplied by 0.5072 to obtain the distance of that parallel from the equator. Meridians of longitude are equally spaced on each parallel of latitude.
  4. Hi Guys, I'm very new to houdini and I've been trying to learn fluid sim lately. From few days I've been trying a tornado system from tutorial from 3dbuzz and a technical paper (http://repository.tamu.edu/bitstream/handle/1969.1/ETD-TAMU-2011-05-9417/DWIVEDI-THESIS.pdf?sequence=2). I've completed the particle system part but the fluid sim is out of my league for now. I'd be very grateful for any tips to convert that to fluid sim. I want to use this opportunity to start learning about fluids. Thank you.. I've also attached the final file I came up with. I tried the fluid sim from the thesis and other post on the forum but failed :"> hehe.. thank you.. tornado_test.hip
  5. Tips and Help request for tornado sim

    hello guys...sorry but looks like not much people have seen this so I'm posting comment so it'll be at top again and more people will see it.. Still hoping that someone with come up with some solution... thanks...