Explorando Houdini 17.5 #1 Vellum Glue

Explorando Houdini 17.5 #1 Vellum Glue

  08 Nov 2019   , , , , , ,


Simple test with Vellum in Houdini 17.5.327 I don’t think I did a good configuration but just want to explore the tools for now (… to visualize the simulation in background while we take a look at the other nodes…) Object with strands… A sphere deformed by Mountain node Basic animation with Transform node using some expressions with $F (currente frame) Group Number creation to specify where to put the strands on the geometry I did the selection manually for the group Hair Generate node using the Group to indicate the distribution of the strands Creating another Group with the roots in order to fix them on the sphere in the simulation Group Expression node already has a preset expression for that Creating another Group for Glue Constraints and attach the strands to the little spheres To simplify, I selected all points with Group node “empty” Vellum Configure Hair node for parameters of hair simulation Indicate the Pin Group and turn on “Match Animation” (if the geometry is animated) Creating little spheres… Adding the sphere and creating another Group for “Glue Constraints” to attach it to the strands. Again, I selected all points manually. adding a Grid and duplicate the spheres over the points with Copy to Points node adding Vellum Configure Strutt Softbody node and I keep it in default Creating geometries for collisions Grid for the floor and a sphere clipped with Clip node Merge node to joined them in a single geometry collision geometries, little spheres and geometry with strands… Merge node to combine the simulations from the strands and little spheres (… the only way I could acess to the Glue groups from them later…) All connected to Vellum Solver node to do the simulation Still need to “glue” the little spheres in contact with the strands using Glue Constraint It’s done inside Vellum Solver with Vellum Constraints node Choose Constraint Type Glue and use those Groups to “glue” Lastly, a Merge node to combine all the geometries in a single node

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