Pazuzu

Yeah you can even use the ratio as a factor for the stiffness for example, that way the zones with more force will be more deform-able in few words; But as with everything is a matter of testing the best method / technique. Cheers! Alejandro

Hi, You can try to inject some force in the geo normals direction; Also if you want to inject some variation in the inflation, you can use the ratio between each point velocity and the normal + some noise value to increase the ratio. Hope that this helps, Cheers! Alejandro

When in a sim with millions of particles you left "on" the cache setting in the flip object.

Hi! I just want to show something about what was talking about pyroclatic details using laplacian as a factor for curvature decimation in a gas sim. This vimeo video shows a custom solver that I have been working on; Is still incomplete, but I'm having really nice results, because is very very easy to configure in comparison with pyro solver and the most important, is fast. I hope you like it! Thank you!! Alejandro

Hi Sebastian! You're welcome! About the values, it mainly depends on what you want, for that example file that value works well. Its pretty high because the resultant gradient has very low magnitude. Remember that this file is just a template, a very rough template, so much to refine still! Cheers!!

Very Nice Stephen!!! Thank you!

Hey Guys!! Here is a video that shows a very fast and simple surface Tension Method! There is also an example file for you to inspect the method! Thank you!

Hi Petz! Nice answer about maths! I'm fan of your explanations and example files here on OdForce! But what about dissecting some siggraph papers for example (computer graphics research), I think one needs better understanding of deep maths to implement those algorithms, no? so again the question, what kind of maths or level of understanding do you need to dissect those computer graphics papers? I know some calculus, linear algebra, etc; But sometimes there is very deep math in those papers, like some Russian vodka of maths! So difficult to understand and implement. Thank you!

Ohh I really want to test the new surface tension model! I hope also some OpenCL news on this version (wranglers), and the most important thing, a robust subversion system for assets (GIT, :)). Cheers!

jejejejej Todo Bien!! Saludos!!

Because constraints are just polylines between points you can use the nearpoint o neighbors vex functions to iterate through the points you want to compare the distances (modo chambon ), or you can already use the arrays created internally by the grains solver (way faster). Then if you want to manually break a constraint, you can just set your weight attribute for the constraint. Hope that this helps! Saludos!

Hey Diego! Sure! Here is a very basic FLIP surface tension implementation using laplacian as a factor; You can change from Laplacian to Curvature to see some little differences, But for most cases Laplacian works better for my tests, and even better yet for smoke, as you can see in the example file, the FLIP sim behaves almost like a pyroclastic cloud at the begining, so imagine this in a gas sim. Hope That Helps! Alejandro ST_tutorial.hip

I usually use laplacian as a factor of perturbation in a smoke or FLIP sim, so you compute the laplacian (curvature has also a very close effect as with laplacian) of your surface field + a gradient to displace your particles for example. In the case of a smoke sim, I drive the divergence with the laplacian, so you can get nice bulbs without the use of vorticles or custom particles solutions to perturb the vel field. Hope that helps! Alejandro

Today the procedural generation is begin to emerge as an standard for space sandbox games, but this franchise was one of the first in 1984 (Hail to David Braben): https://www.elitedangerous.com/

This "Human" behavior is so normal nowadays!! Its a real shame, when I see posts like this, begin for a .hip file without pity. Sometimes I really miss the old community!

Thank you very much Marc!! All Looks awesome!

Very Nice Work!!

Hi! Just sample the handle inside your condition and all works! float radius = ch("radius"); int npts = chi("numpts"); int handle; if (@side > 0) { handle = pcopen(@OpInput2,"P",@P,radius,npts); v@Cd = pcimportbyidxv(handle,"Cd", 0); i@num = pcnumfound(handle); } else { handle = pcopen(@OpInput3,"P",@P,radius,npts); v@Cd = pcimportbyidxv(handle,"Cd", 0); i@num = pcnumfound(handle); } pcclose(handle);

Thank You Guys!!

Hi!! Here is another update for the Tension asset! I hope you like it! Thank you!

Nice solution as always!!

Hi! Not the most elegant way but works! Cheers! padding.hip

Hi! Because the ocean spectrum node gives volume primitives with frequency and amplitude information to ocean evaluate, you can use a volume mix node (experiment with the blending modes) between two ocean spectrum nodes with different settings, then just connect the output to the ocean evaluate and voila! You can try also a texture compositing approach, its way more versatile, because you can tweak (distort, offset, invert, etc) also the uv coordinates for nice blending effects. Hope that helps! Cheers!

Thank you!!

Thank you! Here are some more tests to compare the new APIC method (swirly kernel) in the FLIP solver for H15 with the default one (splashy kernel) without hole filling approach; In those tests you can see a mask attribute as visualization, this attribute controls the weight or influence for the cohesion that controls the behavior, so red area is where full energy is apply to minimize the surface area leading to spherical shapes. https://en.wikipedia.org/wiki/Surface_tension Also a chocolate like sim to test the pipeline in viscous fluids and with a standard meshing stage. Hope you like it! Alejandro splashyKernel.avi SwirlyKernel.avi preview_v004.mov