# All Activity

1. Past hour
2. ## Calculator a Parabola Curve

This is just an option/example (related to your first picutre). If you don't want to use all points you can filter by id. By default you can use all but usually a curve with degree 2 won't fit good (higher degree has better chance for better fit). If you know you have a specific subset of points you want to use , you can set the id for this subset to 1.
3. ## Houdini 17.5.173 Centos PDG cores use

Try setting the 'Maximum CPUs to Use' to 1 in the Local Scheduler.
4. Today
5. ## VEX Function Source Code

Is there a way to find the source code for a specific built-in VEX function?
6. ## thickness to object ?

polyExtrude SOP with backface is not working for you?
7. ## thickness to object ?

This question has been asked before but the thread I found on the subject I can't seem to copy; that is, how do I add thickness to an object ?
8. ## Calculator a Parabola Curve

I sorta see what you mean; but how do I define which points are filtered out; which will result in different ids ?
9. Yesterday
10. ## Calculator a Parabola Curve

You can define which points are filtered out. You will get different results with different ids. You know how to calculate the focus? As hint: If your parabola is y = a*x^2 + b*x + c the derivative is y' = 2*a*x + b. What will happen, if the derivative is 0 (base) and 1 (reflection at this point is from vertical to horizontal (45°)).
11. ## Calculator a Parabola Curve

How do I know where the focus is, when filtering out only points with an id=1, since there are many points with an id=1 ?
12. ## SOP Solver and DOP import help

Hello all! I have a question concerning SOP Solvers in an Auto DOP Network. Im using SOP Solvers and switches to activate fracture geometry at certain times. I am trying to activate a second RBD object in the scene. Inside my SOP solver how do I specify which object the DOP import node fetches from the network? My_Scene.hipnc
13. ## find points and cut.

This is a bit of a naive test but see if it helps chop_up_shape.hip
14. ## fore each loop question

in a python sop you can use the pressButton() argument pointing to your file cache "save to disk" parameter (might have to use evalparm as well) that will in essence physically press the save to disk button on every cook. combine that with the detail attribute filepath variables and that should be all you need also you can set a global variable holding your detail expression (under edit menu > aliases and variables > variables), say \$CACHE = `detail(blahblah)`, then use \$CACHE in your filepath instead of that expression, allowing you to read everything back in as packed prims in a single node using the filemerge sop utilizing that variable (similar to how you can load back in multiple wedge passes)
15. ## Houdini 17.5.173 Centos PDG cores use

Yeap Luke I understand. If you check the Entagma link, they are using TOPs to run multiple frames of VDB meshing and turn a single core process to a multi-core one. They are on Windows and CPU load goes 100% on a 12core system.
16. ## Houdini 17.5.173 Centos PDG cores use

Linux doesn't have anything to do with it. Some algorithms used by Houdini use a single processor core. In those cases performance can be improved by running multiple tasks concurrently. You would see 100% processor utilization only if there were more concurrent tasks than processor cores. Other algorithms will use all processor cores available. It all depends on the specific scene and how it's built as to how well it will scale to multiple processor cores.
17. ## fore each loop question

also TOPs can provide easy wedging within an asset if you can use 17.5
18. ## Houdini 17.5.173 Centos PDG cores use

Hello everyone, I am trying to speed up surfacing tasks using this simple method from Entagma (https://vimeo.com/323270525). I am on Centos 7 and when I monitor CPU usage, it goes maximum at 35% and doesn't use all cores. Is anyone experiencing similar behavior or have any info to share about Houdini and CPU usage at Linux?. Thank you.
19. ## Euler to orient-matrix inside dops.

im on this situation where i need to rotate a lot of RBD stuff inside dops transforming from Euler to Matrix at the same time, do you know whats the best way to do it?,
20. ## Lockheed Martin (Suffolk, VA)

a secret clearance?!! im pretty sure they are making some jets with extraterrestrial tecnology then!!
21. ## Calculator a Parabola Curve

The focus is determined by the parameters of the parabola
22. ## Lockheed Martin (Suffolk, VA)

United States citizenship is required to get a clearance in most cases. These positions require a secret clearance (shown at the bottom of the job posting) which the company will help employees obtain.
23. ## Pyro source Wedges TOP

Vitor, Found it, horay : pyro_simple_wedge_odf003.hipnc
24. ## Writing attributes to image file

Hello! Since I have not seen a hip file for the solution to this problem yet, I've felt the need to post it. There were a couple of major things missing from localstarfights' file, namely correct addressing of the SOP to read the attributes from. Thanks to the people of this thread for letting me know this was even possible! attribexport.hip
25. ## Mantra Glowing points and fake DOF, fake Light emitting

Thanks to everyone on this thread - it's been really, really helpful! Did anybody figure out why the fastglow shops dont show up in reflections? And, if anyone figured out how to do it? Cheers, C
26. ## Calculator a Parabola Curve

With a Parabola curve, is there any way to adjust the focus point, the focus point being; the lowest arc in the curve ?
27. ## Thoughts on this laptop build?

Hi All I am just getting into Houdini and looking to do some more exploring of it whilst on the move. I realise that I am not gonna be able to push it with heavy sims, but I am keen to work on basic setups whilst keeping the weight low and keeping things portable. I am looking to mainly render using redshift hence the 2070 card and i've crammed all the ram in that I can. The company i'm using for the build don't offer amd options for cards, and this I7 is the only one which fits in this chassis. Any massive issues with the following setup? Are there any limitations I should expect? Any Feedback much appreciated. Chassis & Display Proteus Series: 15.6" Matte Full HD 144Hz 72% NTSC LED Widescreen (1920x1080) Processor (CPU) Intel® Core™ i7 Six Core Processor 8750H (2.2GHz, 4.1GHz Turbo) Memory (RAM) 32GB Corsair 2666MHz SODIMM DDR4 (2 x 16GB) Graphics Card NVIDIA® GeForce® RTX 2070 - 8.0GB GDDR6 Video RAM - DirectX® 12.1 1st Storage Drive 1TB SEAGATE BARRACUDA 2.5" SSD, (upto 560MB/sR | 540MB/sW) 1st M.2 SSD Drive 1TB WD Black™ SN750 M.2 NVMe SSD (up to 3470MB/s R | 3000MB/s W) Memory Card Reader Integrated SD Memory Card Reader AC Adaptor 1 x Proteus Series 230W AC Adaptor Battery Proteus V Series Lithium Ion Battery (7180mAh) Power Cable 1 x 1 Metre UK Power Cable (Kettle Lead) Thermal Paste COOLER MASTER MASTERGEL MAKER THERMAL COMPOUND Sound Card Intel 2 Channel High Definition Audio + MIC/Headphone Jack Bluetooth & Wireless GIGABIT LAN & WIRELESS INTEL® AC-9260 M.2 (1.73Gbps, 802.11AC) +BT 5.0 USB/Thunderbolt Options 3 x USB 3.0 PORTS + 1 x USB 3.1 Type C PORT AS STANDARD Keyboard Language PROTEUS SERIES RGB BACKLIT UK KEYBOARD WITH NUMBER PAD Operating System Genuine Windows 10 Professional 64 Bit - inc. Single Licence Operating System Language United Kingdom - English Language Laptop Cooling Stands CoolerMaster NotePal L2 Laptop Cooler, upto 17.3 inch Stand-Alone Monitor ASUS VP28UQG 28" 4K GAMING MONITOR Notebook Mouse INTEGRATED 2 BUTTON TOUCHPAD MOUSE Webcam INTEGRATED 720P 30 FPS HD WEBCAM Price £2,002.00 including VAT and Delivery
28. ## impact data after sim

Got it working by creating an age attribute and increasing the value of age every frame with a sop solver. Post by mart1jn in this thread helped alot. Thanks!
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