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Questions tagged [point-clouds]

questions concerning the use of point clouds / data point sets in blender.

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Camera projection with geo-nodes

I’m trying to create camera projection with geo-nodes to store image color on point cloud color attribute, but I’m not into trigonometry at all. What I’d like to achieve is this: But with geo-nodes - ...
greengreen's user avatar
1 vote
1 answer
32 views

Can Particle System caches be accessed directly by Geometry Nodes?

My goal is to instantiate objects on the points of a particle system. Right now, my workflow is: tweak the parameters of the particle system export it as an Alembic cache (point cloud?) import it ...
andycepi's user avatar
0 votes
0 answers
38 views

Point cloud texture mapping

I imported a mesh 3d scan and made it into point cloud model using geo nodes mesh to point, the 3d scan comes with a file of texture, which is about 12 pages of texture map like I showed in the image, ...
user166647's user avatar
3 votes
1 answer
72 views

How can I create a static "particle cloud" within a fixed volume?

The task Ok, so, the title of this question is relatively abstract, but what I would actually like to do is pretty specific. Yesterday, I asked in a post over at graphic design, how I could recreate ...
mapf's user avatar
  • 135
0 votes
0 answers
53 views

How to make 3D model from spot elevation geodetic map

I need help, and I could not find the answer anywhere, so if anyone knows how to do it, please tell me. First of all, I know there are probably better tools to do this. But I would like to do it in ...
Babica's user avatar
  • 1
0 votes
1 answer
366 views

How to visualize point cloud colors in Blender 4.0 after PLY data import?

Given the following data set which stems from the export of a photogrammetric scan: ...
Markus W.'s user avatar
  • 179
2 votes
0 answers
71 views

Geometry Nodes - Optimizing mesh instancing on a patchy grid

I have this generated selection of points that I'm instancing meshes onto, they are in a grid pattern but not all spaces on the grid contain a point. What I want to ask is if it's possible to cycle ...
SHill's user avatar
  • 21
0 votes
0 answers
34 views

Geometry Nodes Points (and instances) not showing in a small sized objects

I'm working in a really small sized object with real scale size (about 13 mm length object) and I make a distribution node tree to put some tiny rocks distributed in part of the model. All transforms ...
Jamingrone's user avatar
0 votes
0 answers
18 views

How do I export this model so that it is is one object using one material?

I downloaded this model from SketchFab https://skfb.ly/oLsvy and I want to turn it into a point cloud. However the way I usually do this is by assigning a material with a single image texture on one ...
Benjamin Persaud's user avatar
0 votes
0 answers
110 views

Rendering of PointCloud not working

I managed to get a point cloud into Blender 3.6 and wanted to render a view port image. But all I get is a black screen. It happens since I changed the size of the radius in the "Mesh to Points&...
Robert Wildling's user avatar
0 votes
0 answers
78 views

How to export the point cloud coordinates created by the geometry node "distribution points on faces "?

Tried everything I could but cannot find a solution to export it in python code!
Mr. H's user avatar
  • 1
0 votes
2 answers
223 views

GeoNode "Points to Curves": how to make curves for each distinct vertex group in mesh

I am newbie in geonodes and, after some googling, I still do not know how to find answer to my question. My data: Mesh, made of vertices only. Each vertex is assigned to Vertex Group, therefore ...
Mariya's user avatar
  • 1
0 votes
0 answers
13 views

XYZ-Property Point Set Export [duplicate]

Is it possible to export an ASCII/CSV file (or use python,) to obtain the X, Y, Z and colour property for a regular 3D mesh? If so where are the points referenced to? The corner or centre of cell? ...
arw's user avatar
  • 1
0 votes
0 answers
62 views

Lidar point cloud and ambient occlusion shading

I'm trying to replicated the way sketchfab visualizes lidars. The color of each point seem to be determined by some kind of ambient occlusion technique. What I tried: Tried plugging an ambient ...
Andras Ormos's user avatar
3 votes
1 answer
651 views

Geometry Nodes: Phyllotaxis using Repeat Zone as a For loop

I would like to make a pattern of points following a phyllotaxis (like on a sunflower). The algorithm I use is: ...
Gol_D_Roger's user avatar
1 vote
0 answers
161 views

How to handle the huge point cloud with Geometry nodes? [closed]

I am working with the geometry nodes to handle some amount of points generated. However, blender becomes very slow when the points amount is big. I am thinking if I can handle the points batch by ...
Patrick's user avatar
  • 117
5 votes
1 answer
5k views

How can I convert a complex point cloud to mesh?

I come from this question where I have generated a Point Cloud from a simple script which I want to convert into a mesh. I see there is this question and this question, which was unfortunately marked ...
Harry McKenzie's user avatar
1 vote
1 answer
146 views

How do I get a "correct" isosurface from points to volume to mesh workflow?

I am a computational chemist, looking to visualize an electron density in blender. The density is basically a 3D-array with a value assigned to each point. I managed to load the density to blender, ...
Hendrik's user avatar
  • 41
0 votes
1 answer
67 views

transfer field from point cloud to mesh

I want to transfer float attributes/field from this point cloud, with this float attributes distribution. To this mesh, where vertices of the mesh have the same count/position as point cloud. If I ...
Josef Ludvík Böhm's user avatar
0 votes
0 answers
166 views

Exporting generated point cloud to Unreal with color data

I'm an art student from Paris, used to work with blender and pointclouds, and I have a ploblem that I can't seem to be able to solve. My workflow is (most of the time) what follows : Modeling mesh >...
Kiliannn's user avatar
0 votes
0 answers
184 views

point cloud color in pcd format

I am trying to visualize point clouds with color in blender but I cannot achieve that. I understand that the ply or stl format does not support the point cloud color but now I am trying with the *.pcd ...
Jose Moraga's user avatar
0 votes
0 answers
77 views

Point Cloud Visualizer point cloud is not visible with Oculus VR headset

I'm trying to use Oculus VR to view point cloud files (*.las, *.e57, *.ply). I have already installed Point Cloud Visualizer add-on. When I import a point cloud file, I can see it on my screen, but ...
poweren's user avatar
0 votes
2 answers
421 views

Remove sections of a point cloud with Geometry Proximity or any other node setup

I am trying to create slits in this point cloud model (.ply filetype). The geometry I would like to use to delete the slits in the point cloud is a plane with an array modifier (to control the ...
Cailean Boch Murphy's user avatar
0 votes
1 answer
193 views

Turn 2D shape into a Point Cloud

A project I'm currently working on requires turning a 2D shape (simple but random 2D shape, typically a face extracted from another object, can be tilted) into a Point Cloud of some specific specs (...
Raven's user avatar
  • 25
0 votes
1 answer
534 views

Geometry nodes: get line's point global coordinates

Somebody, help me please. I want to bend the curve at any point. So I separate it into two parts and than I try to rotate one around the point of separation. But I cannot get the correct coordinates ...
Inversus's user avatar
0 votes
0 answers
43 views

Is it possible to chang geonodes Extrude Mesh for a face "Origin" to other position?

I'm using Blender 3.4.1. I'm learning geonodes. I wanted to use Geo Proximity to control Extrude Mesh on different faces. But I find that some face like "L shape" has the origin point in the ...
Zag's user avatar
  • 1
1 vote
1 answer
223 views

Blender PLY export makes Vertex Colors darker

I wrote a Python script that exports Pointclouds (only vertices) and their vertex-colors (stored in color_attributes) to a .PLY file. The color on the exported .PLY file is way darker than the ...
op. 111's user avatar
  • 21
2 votes
1 answer
672 views

How to correctly import whitewater particles from fluid simulation (FLIP fluids)?

I exported a FLIP fluids simulation to Alembic (.abc) and imported it into another blend file. The fluid itself works fine however the whitewater particles are not visible. According to the docs, I ...
onetwo34's user avatar
1 vote
2 answers
388 views

Create new objects in a scene from point locations?

I'm using Geometry Nodes to generate a set of points within the volume of a mesh (a human character in this case), with the hope that I can take these points, export them into Unity, and use them as ...
Charlie Baldwin's user avatar
0 votes
0 answers
127 views

How to get point cloud produced by GN modifier by python?

I create a empty mesh and create many points in PointCloud and want to write a addon to export them, how to get them by python? i find the point cloud type doc, but don't get the api to get them: ...
willFederer's user avatar
0 votes
1 answer
1k views

How to generate Points (x,y,z) model from a 3D model using Blender

I am a newcomer to Blender. Briefly, I want to generate Points (x,y,z) model from a 3D model using Blender. And use these points to do numerical simulation. These points should be not only on the ...
gd l's user avatar
  • 3
1 vote
0 answers
110 views

Exporting PLY - No difference between moving object and moving its origin?

I create models in Blender, export them as point clouds and use them in another project. Today I wanted to test the following use case and I am surprised that the exported ply file looks differently ...
Perazim's user avatar
  • 111
1 vote
0 answers
308 views

How do I keep the Random Value node static on changing geometry? [closed]

I have an Alembic point cloud I'm trying to render as grains, but the random size keeps changing every frame because the point count isn't static. I guess I could use the seed input, but I have no ...
Paul S's user avatar
  • 41
2 votes
1 answer
3k views

Rotate instances to face one object with Geometry Nodes

I've created a dense forest of plane image trees using Distribute Points on Faces and Instance on Points nodes. I'm attempting ...
LDO's user avatar
  • 41
2 votes
2 answers
412 views

Object instance on single point using vertex group. Blender 3.2.2

I'm a complete noob with blender and just started learning geo nodes. I'm following this tutorial https://www.youtube.com/watch?v=GHGokQoqVb8&t=421s and I know it's for an old version of Blender ...
Daniel's user avatar
  • 23
0 votes
0 answers
73 views

Blender rendering changing required data colour (red to magenta)

I am using Blender to create a 3D model of a location/building with data points demonstrating the data values through their colour. Red is negative, white is zero and, blue is positive. I imported the ...
Alex's user avatar
  • 1
4 votes
1 answer
589 views

Filter point cloud based on proximity to another point cloud

I'm trying to build a nature scene with geometry nodes, and I want to make sure that plants aren't exactly on top of each other. For example, I don't want grass growing inside of trees and sticking ...
Sethbeastalan's user avatar
0 votes
1 answer
583 views

Getting colored point cloud sequence into Blender

I have motion capture data in the form of a colored point cloud that I would like to get into Blender. The export options from the MoCap program are: I have been trying desperately to get the Alembic ...
HelpMe's user avatar
  • 3
1 vote
0 answers
44 views

Render Point Density to Texture

Was curious if anyone knows of a way to render out a point density to a 3dTexture for use in a game engine? Usually these are just rendered to a red channel and then imported into a 3d texture in ...
Marauder2k9's user avatar
5 votes
3 answers
919 views

how to combine vertices into a surface

I have an array of vertices from the .obj file. I transferred it to a blender . BUT I can't create the surface. how to combine points into a single surface ??
timob256's user avatar
  • 173
0 votes
1 answer
1k views

Can I apply UV texture map into Geometry Node points?

I'm making a coral. It has UV map image texture and I spread it out some points with Geometry Node on the surface of the mesh, and I wanted to apply my UV texture to points. For instance, yellow ...
studentz0's user avatar
0 votes
1 answer
172 views

How to import reference images to specific XYZ positions

Dears, Scientific question: I have a bunch of images taken from a microscope. All images have XYZ coordinates of their real world position. How can I import them into Blender via a script to have them ...
Peter's user avatar
  • 51
4 votes
1 answer
276 views

Is there any way to render a perfect curve just like pointclouds in blender?

When we use the 'curve to mesh' node in geometry nodes, sometimes we cannot get an ideal results because mesh overlap frequently happens and leads to bad shading on surface, just like this figure: So ...
Shiki Ryougi's user avatar
0 votes
0 answers
565 views

Render Coloured Point Clouds as Collection of Spheres

I have a coloured point cloud in a .pcd file, that I can easily convert to a .ply file using Open3D. I would like to visualise ...
RMeli's user avatar
  • 101
0 votes
1 answer
148 views

Turn instances into bounding boxes or proxies in the viewport

I am currently doing a large scale scene involving scattering tons of trees. The viewport slows to a crawl then I do so, is their a way to convert the meshes into bounding boxes when in the viewport ...
Sooroojdeen's user avatar
1 vote
1 answer
182 views

Can a Point Cloud be Spread Through a Smoke Sim?

I'm simulating a sand storm and need a large number of particles in my smoke simulation. After reading about point clouds in Blender 3.0+ and using a few examples I was wondering whether they could be ...
eris0xff's user avatar
0 votes
1 answer
190 views

Dense Cloud col attribute not showing

I'm using metashape agisoft to generate dense cloud from images and I exported the points in PLY and imported to blender. then used attribute named it col to get the original color what calculated by ...
memonto's user avatar
1 vote
0 answers
516 views

How to turbulence the position of the point clouds in the geometry nodes? [closed]

I wanted to make an animation of the appearance from chaos, but my knowledge is not enough. My geonodes: Еxpected result: Until I found the answer and do it through the Erindale Toolkit,the result ...
Deonease Distortions's user avatar
3 votes
1 answer
6k views

Is there an easy way to import point clouds with colors in Blender 3.2?

I studied a couple of videos (it seems to be on this topic), but I failed to achieve something. For example, I have a cloud in Metashape and I want to convert it into a blender. If there is no such ...
Deonease Distortions's user avatar
2 votes
1 answer
823 views

Is it possible to turn particles into points/point cloud?

Now with the release of 3.1 and point clouds. I was wondering if it's possible to convert particles to point clouds and render them as point clouds. This seems like it would be much more efficient ...
TheJeran's user avatar
  • 2,631