> tools

Remesh

tools/remesh·v1.5.1

IN:1 OUT:1

SUMMARY

The Remesh rebuilds any POP with triangles or quads the way the Houdini Remesh SOP does. Each iteration splits edges that are too long, collapses the ones that are too short, flips edges to raise the smallest angle of each triangle, smooths the points along the surface and projects them back onto the input. Open boundaries, edges sharper than Hard Angle and, with UV Seams, the borders of the UV islands are kept as edges of the new mesh, and Use Input Points Only keeps every output point on an input point.

Element Sizing aims for one Target Size everywhere (Uniform) or follows the curvature (Adaptive) with Relative Density, Min Size, Max Size and Gradation, and a point attribute on the input can set the edge length locally through Mesh Size Attribute. Every input attribute is carried over to the new triangles, N can be recomputed as point or vertex normals, and the output can add a Quality attribute per triangle and a MeshSize attribute per point. A typical use is building a low-poly lattice for a simulation that Point Deform then follows.

PARAMETERS

PAGERemesh

Hard Angle	Hardangle	Edges whose faces meet at more than this angle are kept as hard edges. Angles are given in degrees.
[+]UV Seams	Uvseams	Determines how the boundaries of UV islands are treated. Harden keeps them as hard edges so the UVs stay continuous.
UV Attribute	Uvattrib	The vertex attribute holding the UVs whose seams are kept.
Iterations	Iterations	The number of remeshing iterations. More iterations give more regular triangles but take more time.
Smoothing	Smoothing	The amount of smoothing applied at each iteration. Higher values give more equilateral triangles.
Use Input Points Only	Inputptsonly	Restricts the remesher to the input points: edges are only collapsed and flipped, no point is added or moved.
Recompute Normals	Recomputenormals	When on, computes new normals. When off, the input normals are interpolated like any other attribute.
[+]Normal Type	Normaltype	Point Normals gives one smooth normal per point. Vertex Normals keeps the hard edges sharp.
[+]Edge Lengths	Edgelengths	Uniform uses one target edge length everywhere. Adaptive varies the edge length with the local curvature.
Target Size	Targetsize	The target edge length in Uniform mode.
Use Max Size	Usemaxsize	Limits the edge length in Adaptive mode.
Max Size	Maxsize	The largest edge length allowed in Adaptive mode.
Use Min Size	Useminsize	Limits how small the edges can get in Adaptive mode.
Min Size	Minsize	The smallest edge length allowed in Adaptive mode.
Relative Density	Density	The relative density of the sampling in Adaptive mode. A value of 1 meshes a sphere with about 16 points.
Gradation	Gradation	The rate at which edge lengths can change from one triangle to the next. Higher values give fewer triangles.
Mesh Size Attribute	Sizeattrib	A point attribute giving the desired edge length near each point.
Min Size Attribute	Minsizeattrib	A point attribute giving the smallest edge length allowed near each point.
Max Size Attribute	Maxsizeattrib	A point attribute giving the largest edge length allowed near each point.
Output Mesh Size	Outputsize	Adds a point attribute with the edge length used around each point.
Mesh Size Name	Outputsizeattrib	The name of the mesh size attribute.
Output Mesh Quality	Meshquality	Adds a primitive attribute measuring each triangle: 1 for an equilateral triangle, toward 0 for thin ones.
Quality Name	Qualityattrib	The name of the mesh quality attribute.
[+]Buffer Size	Maxpointsmode	Auto sizes the working buffers from the input area and the edge length. Manual uses Max Points.
Max Points	Maxpoints	The number of working points allocated in Manual mode.
Point Limit	Pointlimit	The largest number of working points Auto allocates. Limits the GPU memory used.
Copy Topology Info Back to CPU	Cpureadback	Enable copying the point count and topology information held on the GPU to the CPU.

PAGECommon

Bypass	Bypass	Pass through the first input to the output unchanged.
Free Extra GPU Memory	Freeextragpumem	Free memory that has accumulated when output memory has grown and shrunk.

ATTRIBUTES

IOModified

P	point vec3	Point position. The output is a new triangle mesh lying on the input surface.
N	point vec3	Normal. Interpolated from the input, or computed again with Recompute Normals as point normals or vertex normals (sharp along the hard edges).

IOCreated

Quality	primitive float	Triangle quality with Output Mesh Quality: 1 for an equilateral triangle, toward 0 for thin ones (name set by Quality Name).
MeshSize	point float	The edge length the remesher aimed for around each point, with Output Mesh Size (name set by Mesh Size Name).

INPUTS

Input 0 POP - Input Mesh

OUTPUTS

Output 0 POP - Remeshed Mesh