Questions tagged [point-clouds]
questions concerning the use of point clouds / data point sets in blender.
110
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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!
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2
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62
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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 ...
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13
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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? ...
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26
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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 ...
3
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1
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351
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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:
...
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71
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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 ...
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1k
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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 ...
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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, ...
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47
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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 ...
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128
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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 >...
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106
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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 ...
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43
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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 ...
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2
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195
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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 ...
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1
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119
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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 (...
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320
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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 ...
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159
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Blender isn't reading color attributes from USD?
I'm recently learning about USD and it seems like a simple process to include color data with a mesh but I'm not seeing anything included in blender after import. I'm using this page https://docs....
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38
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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 ...
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16
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Unable to add Compositor Point Density Node - 3D Point Cloud render
I am trying to create a 3D point cloud for a certain scene as part of a 3D vision project I am working on.
I am still learning how to use blender for this purpose, and after reading the documentation ...
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151
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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 ...
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29
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Cycles renders GeoNodes pointclouds as 3d spheres and sometimes as 2d disks; how can this be controlled?
When creating a Pointcloud through DistributePointsOnFace node the output is rendered by cycles on some occassions as actual 3d spheres and on others as 2d disks
; This happens altough the exact same ...
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476
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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 ...
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2
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191
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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 ...
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62
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Assign and show vertex color in edit or object mode for a point cloud
I have displayed a point cloud after writing the following code.
...
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80
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How to render point cloud into svg?
I recently created a point cloud in Blender and now I wanted to export/render it into svg. I tried it with a few Youtube tutorials and Adonis but none of them worked, because every time I render it, ...
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85
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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:
...
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654
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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 ...
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93
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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 ...
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219
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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 ...
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1
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2k
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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 ...
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2
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310
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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 ...
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60
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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 ...
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485
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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 ...
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390
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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 ...
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40
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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 ...
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767
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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 ??
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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 ...
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141
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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 ...
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201
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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 ...
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472
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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 ...
- 101
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1
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129
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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 ...
- 402
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1
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157
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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 ...
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1
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161
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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 ...
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449
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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 ...
3
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1
answer
4k
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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 ...
2
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1
answer
665
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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 ...
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470
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Misalignment of depth map when projecting two views into 3D point cloud
Similar to this question, I'm projecting two views (RGBD) back to 3D point cloud, but observed severe misalignment.
The two views are generated using the same blender script. The blender file is here.
...
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752
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Is there a way to transfer an attribute value from a point to the instance (or the "realized" vertices of the instance)?
I have a curve with control points on which I'm going to instance spheres that are going to have shifting scale values (that is done) and hopefully shifting materials (and here I struggle).
So I ...
- 291
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246
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Dark horizon line between ocean and bottom of HDRi sky
I want to create a simple animation using the camera to fly through clouds (cloud panes, in this case) over a simple ocean. I've never used Blender to create an atmospheric scene before, so I'm ...
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710
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Align Instances to Curve with Geometry Nodes
Using Blender 3.0.
Using the grease pencil, I've created a curve that I've then converted to a mesh (using Object > Convert > Mesh). I have a series of points that I can work with using geometry ...
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263
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Pointclouds from rendered depth images do not align
I am trying to render multiple RGB-D images of a given object in Blender 2.93 using the python interface. The scene contains a single object at position [0, 0, 0] and I am rotating a camera around it ...
