Aizatulin
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Deform curves with other curves in loop
Aizatulin replied to sjrohit's topic in General Houdini Questions
I'm expecting, that there will be an offset since there are fewer guide curves, but it would be nice if you can provide a simple picture (or sequence of picutres) of your final goal. -
Deform curves with other curves in loop
Aizatulin replied to sjrohit's topic in General Houdini Questions
Hi, you can also try wire deform for this purpose. curve_wrap_wiredeform.hipnc -
Here is a simple setup using intersection analysis. intersection_curves_displace.hipnc
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Hi, is this coming close to what you are trying to achieve? InfiniteSpiralCarve_mod.hipnc
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Hi, here is an approach rebuilding the uv based on the distance to a given center point (for example (0.5, 0.5, 0)). noise_question_mod.hipnc
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Driving point position from a different vector attribute
Aizatulin replied to Triplett's topic in Scripting
Hi, you can use addpoint() function on each prim to add the vector attribute as point. You can remove the prims after this and you can also apply fuse to remove duplicates. You can also apply the add function on subsets (groups) if needed. prim_vector_attribute_add.hipnc -
Hi, there are probably many ways to do this, but one way can using the expand group node applied on the left open edge ring. Combined with some other attributes it should give you desired result. Question_sort_mod.hipnc
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You can also use scatter with relax iteration to get quite equidistant sampling. It is a bit slow but you can also use density attribute. poisson_on_bottle_setup_scattering.hipnc
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Hi, you can also loop over the edges. If an edge is convex, the dot product of the direction between the center of the first and second (incident) primitive with the normal of the first primitive should be less than zero. edges_convexity.hipnc
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Hi, you can try to set creases on edges for (catmull-clark) subdivision to get sharper lines, here is an example. creases_lines.hipnc
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Hi, here are some ideas: create a referene for each prim onto its parent (if not already done) for each prim store all children(ref) into one array (using the reference) map this array to the u position of the parent curve (by using distance functions) [there are probably multiple ways -> but xyzdist() should be fine here] push all u values into one array including the existing points and rebuild the curve (with this array sorted by u) Here is simple setup including some aspects prim_insert_vertices.hipnc
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Hi, you can also try polybevel. It is not exactly the same, but quite similar (you have to extend the edge selection). edge_polybevel.hipnc
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Hi, the linear vertex number is useful, if you want to loop over all vertices at once (without looping over the prims). The linear vertex is independent from the primitive, where the vertex belongs to. Each prim has multiple vertices but each vertex has only one prim. Or lets say, if you put all vertices of all primitives into one list with unique identification (increasing numbers) you will get the linear vertices. Just put this source code into a vertex wrangle, to see the differences (you can also see, that each point can have several vertices aswell but each (linear) vertex is exactly one point reference) i@vn = @vtxnum; i@pv = vertexprimindex(0, @vtxnum); i@prim = @primnum; or just a file linear_vertex.hipnc
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HELP WITH PLANT ANIMATION! PLEEAASSEE!!
Aizatulin replied to miccetro's topic in Animation & Rigging
You can also try to deform your static rest geometry and apply this deformation onto the deformed geometry using position and orientation attributes. Here is an example philodendron_model_03_for_forum_mod.hipnc -
Or you shift the previous frame to the current position and apply the attribute transfer on it (all in the solver). AttributeTransfer_03_shift.hipnc
