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Found 8 results

  1. I have a strange problem after using a convert line sop to separate primitive edges (I know there are a couple of different ways to separate primitive edges, but in my example I must use convert line). I'm wanting to resample those primitive edges afterward, but even after fusing all points back together, the resample is somehow re-splitting the points. Example .hip attached - This is a very simple version of my original scene, so not overly complex at all - Just note I must use the convert line sop to split those edges apart beforehand. Resample_Problem.hip
  2. Pragmatic VEX: Volume 1 [4K] [H18]

    After more than 5 months of unimaginable amount of work, I am proud to release my first in-depth Houdini course on VEX More details in the video description and the website. Active Patreon members will receive additional discounts proportional to their lifetime support (25% of their lifetime support). Message me on Patreon for your discount coupon. Enjoy! Table of Contents 01 - Introduction [Point Clouds] 02 - Introduction [pcopen() vs pcfind() vs nearpoints()] 03 - Introduction 04 - Implementation 05 - pcfilter() Implementation for pcfind() 06 - pgfind() 07 - pcfind_radius() 08 - Excluding the Current Point & Ad-Hoc Groups 09 - Finding Min & Max Neighbour Points [Unique Pair Matching] 10 - Concept 11 - Implementation [Camera Based Occlusion with Variable Pscale] 12 - Concept 13 - Implementation [Uniform Point Distribution Over Polygonal Surfaces [Point Relaxation]] 14 - Concept 15 - Implementation 16 - Decoupling Operators [Convolution Kernels] 17 - Introduction 18 - Border Handling [Connectivity & k-Depth Point Neighbours Using Edges] 19 - Introduction 20 - Concept 21 - Implementation [Connectivity & k-Depth Point Neighbours Using Primitives] 22 - Concept 23 - Implementation [Extending k-Depth Point Neighbours Using Edges] 24 - Introduction 25 - Concept 26 - Implementation [Extending k-Depth Point Neighbours Using Primitives] 27 - Concept 28 - Implementation [smoothstep() [Cubic Hermite Interpolation]] 29 - Concept 30 - Implementation [Shaping Functions] 31 - Introduction 32 - Implementation 33 - Blurring Attributes [Sharpening Attributes Using Unsharp Mask] 34 - Concept 35 - Implementation [Generalizing the Kernel Code to Handle All Attribute Types] 36 - Concept 37 - Implementation [Attribute Gradient] 38 - Introduction 39 - Concept 40 - Implementation [Gradient Ascent & Descent] 41 - Planar Geometry - Introduction 42 - Planar Geometry - Concept 43 - Planar Geometry - Implementation 44 - 3D Geometry [Contour Lines] 45 - Introduction 46 - Concept 47 - Implementation 48 - Heightfields [Geometric Advection - Orthogonalization & Flowlines] 49 - Introduction 50 - Concept 51 - Implementation [Clustering & Quadtrees] 52 - Concept 53 - Implementation [Adaptive Subdivision] 54 - Introduction 55 - Implementation 56 - Hashing [Adaptive Subdivision] 57 - Improving OpenSubdiv Catmull-Clark Subdivision Surfaces Algorithm 58 - Half-Edges [Adaptive Subdivision] [Aggressive Performance Optimizations] 59 - Eliminating Groups 60 - Custom Fusing In VEX 61 - Recreating Proximity Structures In VEX 62 - Get Unshared Edges In VEX 63 - Final Optimizations [Limit Surface Sampling] 64 - Introduction 65 - OpenSubdiv Patches 66 - Moving Points to the Subdivision Limit Surface 67 - Scattering Points on the Subdivision Limit Surface 68 - Generating a Point Cloud on the Subdivision Limit Surface 69 - Pre-Generating a Point Cloud on the Subdivision Limit Surface 70 - Creating Isolines on the Subdivision Limit Surface [Adaptive Subdivision] 71 - Computing Surface Normals from the Subdivision Limit Surface [Custom Subdivision Surfaces] [Splitting Edges [Edge Divide]] 72 - Concept 73 - Converting Edges to Primitives 74 - Creating New Edge Points [Rebuilding Polygons] 75 - Concept 76 - Implementation 77 - Preserving & Interpolating Attributes 78 - Multithreading by Connectivity 79 - C++ vs VEX 80 - Preserving Groups 81 - Final Optimizations [Implementing Bilinear Subdivision] 82 - Introduction 83 - Concept 84 - Modeling Test Geometry 85 - Starting from Edge Divide 86 - Creating New Face Points 87 - Creating New Edge Points [Creating New Closed Polygons] 88 - Concept 89 - Implementation [Creating New Open Polygons] 90 - Concept 91 - Implementation 92 - Preserving Primitive Groups & Interpolating Primitive Attributes [Preserving Vertex Groups & Interpolating Vertex Attributes for Closed Polygons] 93 - Concept 94 - Implementation 95 - Preserving Vertex Groups & Interpolating Vertex Attributes for Open Polygons 96 - Implementing Iterations 97 - Preserving Literal Groups 98 - Creating Neighbour Primitives 99 - Final Changes 100 - Testing On Complex Geometry [Implementing Catmull-Clark Subdivision] 101 - Introduction [Closed Surfaces] 102 - Rules [Gathering Edge & Face Points] 103 - Concept 104 - Implementation [Computing Weights for New Edge Points] 105 - Concept 106 - Implementation [Computing Weights for Original Points] 107 - Concept 108 - Implementation [Attribute Interpolation] 109 - Concept 110 - Implementation [Boundary Interpolation Rules for New Edge Points] 111 - Concept 112 - Implementation [Boundary Interpolation Rules for Original Points] 113 - Concept 114 - Implementation 115 - Open Surfaces - Handling Corner Points 116 - Handling Non-Manifold Topology [Open Polygons] [Computing Weights for Original Points] 117 - Reverse Engineering OpenSubdiv 118 - Implementation [Computing Weights for New Edge Points] 119 - Reverse Engineering OpenSubdiv 120 - Implementation 121 - Handling Open Polygonal Curves [Handling Mixed Topology] 122 - Full Geometry 123 - Sub-Geometry 124 - Testing On Complex Geometry [Performance] 125 - Profiling [Grouping Boundary Edges from Primitive Group] 126 - Concept 127 - Implementation 128 - VEX vs C++ [Caustics] 129 - Introduction 130 - Sea Caustics 131 - Pool Caustics 132 - Conclusion
  3. Fuse edge to generate center line

    Hi guys, does anyone know if in Houdini is an option to fuse points in poly extrude to generate center line as I show in the gif below? Or how could we generate a center line in such a geometry? I need to do it to generate neon light in the center of the letter.
  4. I know about Cache Manager (Shift+Alt+M), but I am looking for a way to clear memory DURING cooking. Otherwise definition will crash. I tried rewriting fuse SOP in VEX, but with the same problem: int points[]=pcfind(0,"P",@P,0.0000001,200); pop(points,0); foreach(int i; points){ removepoint(0,i); }
  5. Hello, could someone explain to me what this parameter does exactly? What is being sampled for tolerance?
  6. Hello : ) I have a particle simulation with particles that die fairly quickly. I used a time blend then trail sop to replicate the particles. The problem is that the particles start to overlap once they start dying, as seen in the photo. This causes a problem later on in the pipeline for me. So I use a fuse sop to try to consolidate all the points occupying the same position into one particle. For some reason, I cannot get the fuse sop to work on these points. Am I doing something wrong? Any help would be appreciated. Does fuse not work if the points are not connected? thanks in advance. points.hip
  7. Hi, I have some issues with the FUSE before SUBDIVIDE sop and I think it might be a bug. Its realy simple... -> Platonic Soccerball -> create Unique Points -> assemble name attr. -> (foreachSubnet.-..Extrude) -> Fuse -> subdivide. After that it just doesnt seems to work probably. see example: soccerball tst.hip
  8. Right angle curve

    Good day, I'm looking for a simple way to convert a line or a curve in a curve composed only with right angle edges. I have try to use Fuse SOP in Snap/Grid mode but this gave me 45 degrees angle too. Any idea?
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