how could I generate a line in the middle of an object? i.e. a torus, the centerline would be a circle....

@ryew: thanks a lot. Will be a hard way the next few month but still loving Houdini ;-)

@particleskull: sorry for the late reply. I was in hospital after an accident. yup, your setup works fine.

Lot of tuts online. I.e:. https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjj-LXCo5j3AhWYRPEDHYJ8CesQtwJ6BAgGEAI&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3Dw0eGwlGyTjE&usg=AOvVaw2Mb6kBuuYNbW8BSCJjfmGZ https://www.cgcircuit.com/tutorial/how-to-fix-particle-stepping-in-houdini?utm_source=youtube&utm_medium=social&utm_campaign=how-to-fix-particle-stepping-in-houdini https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&cad=rja&uact=8&ved=2ahUKEwjj-LXCo5j3AhWYRPEDHYJ8CesQtwJ6BAgQEAI&url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DriUx1ILoedc&usg=AOvVaw1kdearygh3nJWPunWjhFHX Was just the first three after a google for "Houdini particle stepping". I am sure you will find a lot more online. Also try to change your popsetup before changing the subseps.

hi the scene in the attachement give me 2 different renderresults:

Hi, how do you setup a scene for caching with a lot of sims to render. It should cache and render all the sims at once. I am interested in both ways, the TOP and the "normal" way.

in wich direction should the particle tend to direct with its normals? If it should be completeley random use an attrib noise. Or a wranglenode, i.e. like so: @N = rand(@Ptnum)); Also go further to dev this rand function. Have a look into the Web for further usage and/or examples.

little late, sorry. Was ill. So thanks Librarian

How could I change resitant the base color (i.e. for coloring, forloop node) of HDA's?

yeah again: one more question about the hodini.env I try to implement the FeElib (FeLib on GitHub) into my setup. Had read the toadstorm infos for the json files (Toadstorm: "doing away with houdini.env)" and also the sidefx hints. Unfortunately it wont work. Here is the felib.json wich I try to integrate in my setup: FeLib.json. The FeLib itself is located in "E:/github/FeELib-for-Houdini" on my workstation. the once part I've changed was the "path": [ { "value" : "$LibPath/FeELib-for-Houdini", "method" : "prepend", }, ], into "path": [ { "LibPath" : "e:/github", "value" : "$LibPath/FeELib-for-Houdini", "method" : "prepend", }, ], here is the complete FeLib.json: { "load_package_once": true, "path": [ { "LibPath": "E:/GITHUB", "value" : "$LibPath/FeELib-for-Houdini", "method" : "prepend", }, ], "env": [ { "FeELib": "$LibPath/FeELib-for-Houdini" }, { "HOUDINI_SCRIPT_PATH": { "method": "prepend", "value": [ "$FeELib/scripts", ] } }, { "HOUDINI_OTLSCAN_PATH": { "method": "append", "value": [ "$FeELib/otls/examples", "$FeELib/otls/2D", "$FeELib/otls/Advect", "$FeELib/otls/Animate", "$FeELib/otls/Attribute", "$FeELib/otls/Convert", "$FeELib/otls/Data", "$FeELib/otls/Deform", "$FeELib/otls/Deprecated", "$FeELib/otls/Edit", "$FeELib/otls/Export", "$FeELib/otls/Filter", "$FeELib/otls/Fluid", "$FeELib/otls/Fracture", "$FeELib/otls/Generator", "$FeELib/otls/Geo", "$FeELib/otls/Group", "$FeELib/otls/Growth", "$FeELib/otls/HeightField", "$FeELib/otls/Image 2D", "$FeELib/otls/Import", "$FeELib/otls/IO", "$FeELib/otls/Match", "$FeELib/otls/Morph", "$FeELib/otls/Operation", "$FeELib/otls/Poly Edit", "$FeELib/otls/POP", "$FeELib/otls/Script", "$FeELib/otls/Solver", "$FeELib/otls/Topo", "$FeELib/otls/Transform", "$FeELib/otls/UV", "$FeELib/otls/Visualize", "$FeELib/otls/Animate/Loop", "$FeELib/otls/Attribute/String", "$FeELib/otls/Attribute/Vector", "$FeELib/otls/Convert/Pack", "$FeELib/otls/Data/Capture", "$FeELib/otls/Data/Cluster", "$FeELib/otls/Data/Connectivity", "$FeELib/otls/Data/Enumerate", "$FeELib/otls/Data/Graph", "$FeELib/otls/Data/Hull", "$FeELib/otls/Data/Intersection", "$FeELib/otls/Data/NDC", "$FeELib/otls/Data/Orient", "$FeELib/otls/Data/Property", "$FeELib/otls/Data/Shading", "$FeELib/otls/Data/Similar", "$FeELib/otls/Data/Space", "$FeELib/otls/Data/Time", "$FeELib/otls/Data/Topology", "$FeELib/otls/Data/Transfer", "$FeELib/otls/Data/Transform", "$FeELib/otls/Data/Volume", "$FeELib/otls/Data/Weight", "$FeELib/otls/Detect/Bounding", "$FeELib/otls/Detect/Similar", "$FeELib/otls/File", "$FeELib/otls/File/Game", "$FeELib/otls/Filter/Animation", "$FeELib/otls/Filter/Bake", "$FeELib/otls/Filter/Boolean", "$FeELib/otls/Filter/Constraint", "$FeELib/otls/Filter/Constraint/Kinematics", "$FeELib/otls/Filter/Curve", "$FeELib/otls/Filter/Deform", "$FeELib/otls/Filter/Deform/Bend", "$FeELib/otls/Filter/Deform/Bone", "$FeELib/otls/Filter/Deform/Capture", "$FeELib/otls/Filter/Deform/Curve", "$FeELib/otls/Filter/Deform/Morph", "$FeELib/otls/Filter/Deform/NDC", "$FeELib/otls/Filter/Enumerate", "$FeELib/otls/Filter/Fracture", "$FeELib/otls/Filter/Generator", "$FeELib/otls/Filter/Geo", "$FeELib/otls/Filter/Interpolate", "$FeELib/otls/Filter/Match", "$FeELib/otls/Filter/Noise", "$FeELib/otls/Filter/Project", "$FeELib/otls/Filter/Ref", "$FeELib/otls/Filter/Rewrite", "$FeELib/otls/Filter/Smooth", "$FeELib/otls/Filter/Space", "$FeELib/otls/Filter/Struct", "$FeELib/otls/Filter/Topo", "$FeELib/otls/Filter/Topo/Artificial Line", "$FeELib/otls/Filter/Topo/LOD", "$FeELib/otls/Filter/Topo/Optimize", "$FeELib/otls/Filter/Topo/Subdivid", "$FeELib/otls/Filter/Transfer", "$FeELib/otls/Filter/Transform", "$FeELib/otls/Filter/Volume", "$FeELib/otls/Filter/Volume/Analysis", "$FeELib/otls/Filter/Volume/Rebuild", "$FeELib/otls/Filter/Volume/VDB", "$FeELib/otls/Filter/Volume/Analysis", "$FeELib/otls/Filter/Volume/Rebuild", "$FeELib/otls/Filter/Volume/VDB", "$FeELib/otls/Filter/Generator/Data", "$FeELib/otls/Filter/Generator/FX", "$FeELib/otls/Filter/Generator/Modeling", "$FeELib/otls/Fracture/Boolean", "$FeELib/otls/Fracture/Clip", "$FeELib/otls/Fracture/Collision", "$FeELib/otls/Fracture/Constraint", "$FeELib/otls/Fracture/Shatter", "$FeELib/otls/Fracture/Voronoi", "$FeELib/otls/Generator/Copy", "$FeELib/otls/Generator/Curve", "$FeELib/otls/Generator/Curve to Poly", "$FeELib/otls/Generator/Fractal", "$FeELib/otls/Generator/FX", "$FeELib/otls/Generator/Graph", "$FeELib/otls/Generator/Layout", "$FeELib/otls/Generator/Outline", "$FeELib/otls/Generator/Point", "$FeELib/otls/Generator/Poly Expand", "$FeELib/otls/Generator/Primitive", "$FeELib/otls/Generator/Sample", "$FeELib/otls/Generator/Stylize", "$FeELib/otls/Generator/Volume", "$FeELib/otls/Geo/Ball", "$FeELib/otls/Geo/Biome", "$FeELib/otls/Geo/Box", "$FeELib/otls/Geo/Building", "$FeELib/otls/Geo/Building/Stone", "$FeELib/otls/Geo/Building/Wood", "$FeELib/otls/Geo/Building/Decoration", "$FeELib/otls/Geo/City/Block", "$FeELib/otls/Geo/Curve", "$FeELib/otls/Geo/Fractal", "$FeELib/otls/Geo/Fractal 2D", "$FeELib/otls/Geo/Hard Surface", "$FeELib/otls/Geo/Hedra", "$FeELib/otls/Geo/Industry", "$FeELib/otls/Geo/Installation", "$FeELib/otls/Geo/Layout", "$FeELib/otls/Geo/Machine", "$FeELib/otls/Geo/Mirror Symmetry", "$FeELib/otls/Geo/Motion Design", "$FeELib/otls/Geo/Nature", "$FeELib/otls/Geo/Organic", "$FeELib/otls/Geo/Pattern 2D", "$FeELib/otls/Geo/Pattern 2D/Font", "$FeELib/otls/Geo/Primitive", "$FeELib/otls/Geo/Primitive/2D", "$FeELib/otls/Geo/Primitive/Curve", "$FeELib/otls/Geo/Primitive/Helix Spiral", "$FeELib/otls/Geo/Primitive/Knot", "$FeELib/otls/Geo/Primitive/Polyhedron", "$FeELib/otls/Geo/Primitive/Surface", "$FeELib/otls/Geo/Radial Symmetry", "$FeELib/otls/Geo/Radial Symmetry/Cup", "$FeELib/otls/Geo/Road", "$FeELib/otls/Geo/Script", "$FeELib/otls/Geo/Sphere", "$FeELib/otls/Geo/Terrain", "$FeELib/otls/Geo/Test Geometry", "$FeELib/otls/Geo/Tube", "$FeELib/otls/Group/Bound", "$FeELib/otls/Growth/Cluster", "$FeELib/otls/Growth/Fractal", "$FeELib/otls/Growth/Grain", "$FeELib/otls/Growth/Search", "$FeELib/otls/Growth/Tesselation", "$FeELib/otls/Layout", "$FeELib/otls/Morph/Time", "$FeELib/otls/Operation/Blast", "$FeELib/otls/Operation/Cache", "$FeELib/otls/Operation/Delete", "$FeELib/otls/Operation/Filter", "$FeELib/otls/Operation/Merge", "$FeELib/otls/Operation/Update", "$FeELib/otls/POP/Trail", "$FeELib/otls/Topo/Artificial", "$FeELib/otls/Topo/Blast", "$FeELib/otls/Topo/Culling", "$FeELib/otls/Topo/Optimize", "$FeELib/otls/Topo/Primitive", "$FeELib/otls/Topo/Recreate", "$FeELib/otls/Topo/Repair", "$FeELib/otls/Topo/Resolve", "$FeELib/otls/Topo/Sample", "$FeELib/otls/Topo/Standard", "$FeELib/otls/Topo/Stylize", "$FeELib/otls/Topo/Subdivid", ] } }, { "HOUDINI_VEX_PATH": { "method": "append", "value": [ "$FeELib/vex/^", "$FeELib/vex/include", "$FeELib/vex/include/child", "$FeELib/vex/include/child/element", "$FeELib/vex/include/child/element/basic", "$FeELib/vex/include/child/element/basic/deep", ] } }, { "HOUDINI_OCL_PATH": { "method": "append", "value": [ "$FeELib/ocl", ] } }, ], } The Felib isnt recognized at all with this configuration. And no, I dont want to copy the whole FeLib folder into my home directory. Thanks in advance and Healthyness and Peace.

did you installed the Ryzen Master tools? (AMD Ryzen Master Application). Here you will have a playground for tuning. And the correct driver wil also be installed, I think.

if I use a resample node, the points are evenly distributed. After a noisevop node the distribution isnt even aymore. How could I distribute the points again evenly? Another resample will change the pointcount wich is important for further developing. Is there a node for an evenly distribution of points. A VEX solution is welcome

how could I manage that i.e. inner, not visible particles i.e. from an thick spray, not to be rendered/calculated. Are they calculated?

how could I manage that that the vellum solver "unfolds" the overlapping cones? Growing few frames from a stadium where no overlapping occur at all wont help cause the cones become to tiny for the vellumsolver, do they?. Whats the secret to handle such a situation? animated_restblend.hip

one solution is using a SOPGEO, in some cases a sopsolver also would help.