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## Popular Content

Showing most liked content on 05/23/2018 in all areas

1. 3 points

## Immersive Linear Algebra

Linear algebra book online with interactive examples: http://immersivemath.com/ila/ Haven't gone through the lot but looks helpful.
2. 1 point

## Immersive Linear Algebra

I use Houdini to understand math basics for myself and VEX is a very handy tool for that: you are able to build 3D elements with math on the fly.
3. 1 point

4. 1 point

## Randomize point selection pattern

@group_targetPoints = 1; int delta = 2; i@modulo = 10 + int(ceil(delta * fit01(rand(@ptnum + 354656), -1, 1))); if(@ptnum%@modulo) { i@group_targetPoints = 0; } I use delta to add or subtract the module 10. Here 10 +- a random between -2 to +2. I think it's not the good way. This approach seems better: @group_targetPoints = 0; int delta = chi("delta"); i@modulo = int(ceil(delta * fit01(rand(@ptnum + 356156), -1, 1))); if(@ptnum%30 == 0) { setpointgroup(0,"targetPoints", @ptnum + @modulo, 1); } Here for each modulo of 30, i setup in group another point near the point number.
5. 1 point

## fur sim issues

Stiffness generally comes from the Elasticity tab in in the Wire Object. Play about with the Angular Spring Constant and Angular Damping Constant. Edit* These are called Bend Spring and Bend Damping in the Guide Simulate. You can also create attributes on the curves before the sim to help define the shape, kangular, width ect Definitely look at the Wire Object section within the Houdini Help sheet, gives you some useful info on exactly what you're talking about.
6. 1 point

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9. 1 point

## Vex shifting values.

Try the modulo operator: http://www.sidefx.com/docs/houdini/vex/lang.html#operators
10. 1 point

11. 1 point

## Absorption like Krakatoa for Smoke Volumes

Old thread, but i was just playing around with this and got a similar look going volumeAbsorption.hip
12. 1 point

## Push points out of Volume / Collision Deformer

Here is another example: push_points_out_of_volume.hip
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