Questions tagged [coordinates]

Blender represents locations in a scene by their coordinates. The coordinates of a location consist of three numbers that define its distance and direction from a fixed origin.

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26 views

Adress and select specific triangles of a stl data set

Dear Stackexchange community, I'm a beginner in Python and Blender. In general, we work with STL-data. I found a python code, that could parse the coordinates of each triangle (one scan data-set ...
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23 views

OBJ import coordinates

Importing OBJ files in blender gives positions that don't (textually) match the .obj file. That is to say, a vertex that has position ...
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25 views

How can I get the global coordinates of joints or bones of a skeleton during animation? [duplicate]

I want to get the coordinates of joints of a skeleton. The following is the main code I used. ...
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How to describe an object in the camera reference frame?

I have an environment with a sphere, a camera and the sun. Both the camera and the sun track the sphere, such that they point always to the sphere. All the coordinates are referred to the origin of ...
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Vertex coordinates of selected vertices not updating, but indices update

I am writing some code that selects the end vertices of an open tube, and then saves the indices and coordinates in a list so I can use these points to bridge edge loops. ...
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1answer
40 views

Half of the scale value not in the middle

I just tried starting with Blender by scaling a cube with the values x=20,y=20. Afterwards I tried to move the bottom left corner to the origin by changing the location by half of the values (10,10) -...
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Getting baked animation values using python while preserving editable animation

I'm trying to use python to get world space location and rotation values of an animated camera, including transformations applied trough parents and constraints. I need the Values as XYZ coordinates ...
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Help with local coordinates with parents, constraints, and drivers [duplicate]

I'm trying to make a wheel rotation system using drivers https://youtu.be/3mIrbZb-ZQQ I have tried to fix this with drivers, constraints, and parents, all of them do the same thing.
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29 views

Can you use .cub files in blender?

I am looking into a research opportunity with my college and my professor explained to me that he uses a application called Multiwfn and it produces a large txt file of coordinates, I was wondering if ...
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42 views

Get pixel coords for vertex in viewport

Is it possible to get the screen XY coordinates in viewport for a vertex in orthographic view? I get pixel locations as per a previous answer like this: ...
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1answer
58 views

Bend a flat gradient without distortion

I am trying to make some shapes out of object coordinate vectors. I want to take a linear gradient (the X, Y, or Z) and bend it an arbitrary amount around an arbitrary point without distorting it. ...
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how to iterate over the connected vertices sequentially of polygon?

I have a map where each country is a polygon of many vertices. I want to get an array of coordinates of the vertices of a polygon. Now I get and save the list of selected vertices in the table in edit ...
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changing the coordinate system of imported 3D stl

i am an oral and maxillofacial surgeon. when i import models from the impression of patients teeth it is imported in the 0 position of the coordinate system. when i immport models from segmentation ...
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UV cube projection preserving vertex coordinates

When I apply "UV > Cube projection" it centers all the islands somewhere around (0.5,0.5) UV coordinates. I'd like, however, to preserve the the local vertex coordinates. For example if ...
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Getting vertex coordinates with applied shape keys

I'm trying to write a function that returns vertex coordinates including their transformation that was a applied by (one or multiple) shape keys. Currently this is how I tried, but I only get vertex ...
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1answer
55 views

select certain vertices and export the xyz coordinate

How may I select certain vertices I want from this 3d mesh in Blender and export these vertices coordinates values as a table in a *.xls or *.csv file format? I'm looking at 100 over vertices to be ...
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Rotate a mesh selecting 3 points which will be the floor

In Zephyr, I've seen that there is a functionality to rotate the mesh selecting 3 points which will be the floor. Do we have such functionality in Blender? This is quicker that playing with the gizmo ...
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How to move a bone's tail to coordinate in pose mode?

How can I update the coordinates of each bone's head & tail like I did in edit mode, but in pose mode? Is rotation (along multiple axes) with resizing (as the distance between every two tails may ...
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1answer
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axis_conversion producing unexpected result?

I am attempting to convert the world transforms of scene objects into a different coordinate system (-Z forward Y up) using axis_conversion method as follows: ...
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1answer
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Plotting multiple, separate, closed Bezier objects from dataset of xyz coordinates

I am new to blender and am using python within blender to do the following: Read in list of coordinate data for bezier curve objects - DONE For each unique object within the dataset, take that ...
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How to get the coordinates of a sliced volume?

I have a project where I need to calculate the immersed volume of a floating body (e.g., ship). I am starting with the basics, so I am considering a cube for now. The waterline is assumed to be a ...
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1answer
251 views

How can I "bend" object coordinates?

As you can see, the object coordinates don't bend along with the object itself. I know this is intentional, but is there a way to perhaps make them follow the contours of the object, or to manually ...
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1answer
136 views

Finding image coordinates of rendered vertex after refraction, distortion, etc

I'm in blender 2.92 working with the Python API. I know how to get the pixel coordinates of a vertex before refraction, lens distortion, etc.--see e.g. How to find image coordinates of the rendered ...
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28 views

Camera extrinsics matrix blender

The camera object in blender python API has the variable matrix_world. I was hoping it would give the camera pose wrt to the world coordinate system but if you ...
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Error Setting new vertice coordinate values in python - 'BMVertSeq' object does not support item assignment

I have a model containing two meshes which need to be resized with python. Let's call them an artwork and a frame. I want to resize the artwork depending on parameters passed in, but for simplicity ...
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641 views

Get Point Coordinates generated with Geometry Nodes?

Say you generate some random points using Geometry Nodes, how can you get all those point coordinates using the python api? The only hint I have is that the point coords are located under Point Cloud ...
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1answer
35 views

Is it possible to move an object to deform a lattice?

I've seen the lattice used to move objects into place by deforming the lattice but I want to do something different. I want to move an object to create the deformations of a lattice and apply that ...
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1answer
33 views

Apply all Transforms to duplicated objects

I have been copy/pasting objects because when I Duplicate objects, I can no longer "apply all transforms" (control a) to them. I use that feature to reset the rotations to 0 and scaling ...
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1answer
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How do you change generated to object coordinates without changing the xyz

I was just wondering how you change generated to object coordinates without changing the xyz I am getting a little bit closer to it by adding -0.5 to the generated coordinate, but I'm still missing ...
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Coordinates problems in the bones of a character imported from Daz

I'm using the Daz-Blender bridge addon and i'm having issues importing characters in Blender from Daz. This is the condition in which I find the character when I import into Blender: In the folder ...
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Issues setting units to 0.01 meters

When I set the scene units to 0.01 meters several issues appear, and I hope there's a simple solution. When set to adjust origin, the origin access icon is ridiculously tiny (this would be a ...
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Need WORLD XYZ from Camera x/y/depth

Currently using location_3d_to_region_2d within a script to get the screen-space coordinates of each vertex. I need to do the reverse -- given a Cam and X/Y/depth get X,Y,Z world space. I've ...
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1answer
54 views

stl-Voxelisation and coordinates

I am new to Blender and have searched a lot for my problem, but unfortunately have not found anything useful... Is there a possibility to voxelise an stl-file with Blender and to define the voxel size ...
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2answers
232 views

random place on a face with python

I'm trying to place an object at a random place on a plane. So far, I found out how to get the vertices locations in real world. ...
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2answers
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Draw straight lines for sphere/polar coordinate meshes

I want to make a texture that basically splits a sphere into 8 quadrants, and has two boxes which are place on opposite poles (since these two boxes are where more of the visual detail is in an ...
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Bounding box of 3D object in 2D render is offset

I am currently trying to translate a 3D object in my Blender scene to a region of interest in the respective 2D render. I have found these solutions 1, 2, and 3 that make use of the ...
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398 views

How to apply driver based on geometry-node-generated coordinates

I had an idea that I'm attempting to implement with Blender geometry nodes. Basically, a swarm of scarabs, which should open and close their wings when their z-height is close to a certain value. I've ...
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1answer
167 views

Which matrix to use to transform children local coordinates to global?

Setup I have an object Plane with 6 vertices. To each vertex I assign another object as child. Then I apply two keyframes on location to object Plane: In frame 0 it goes to Z = 5 In frame 81 it goes ...
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Two objects right next to each other, but wildly different coordinates [duplicate]

Can someone explain why the coordinates on these two objects are so drastically different? The Y direction, which is UP/DOWN in this view, should be the same between these two objects. But they ...
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Extract object coordinates on from Keyframes and save in external file [duplicate]

I wish to create the animation of a robot on Blender and simulate the same animation in Webots to check for feasibility. For this, I'm thinking of extracting coordinate data from all objects in the ...
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1answer
34 views

Drivers breaking down after model transformation

I am currently modelling a complicated gearbox and I am using drivers to model the relations between the parts. There are multiple gears turning in different ratios and to each gear, a few parts are ...
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How to align local coordinate with object?

I created hundreds of cylinders, joined them into a single object, then splitted back by mesh -> separate -> by loose parts in Edit mode. The splitted-back ...
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1answer
50 views

Trying to understand coordinate spaces in python

In a sense I have "solved" my original problem but I don't understand why/how its solved. I have a script that generates a number of objects and then attempts to create straight lines via a ...
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1answer
47 views

How do I keep two softbodies in the same position?

I have two softbody cubes, one is smaller than the other. They are both aflling at the same speed, but the problem is that when the bigger cube lands, the smaller cube goes all the way down. Is there ...
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How can I see the coordinate/transformation change when I change the pose of a model?

For example, if I rotate the right forearm of my model in blender, how can I see that the model's forearm changed numerically?
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2answers
253 views

Select everything inside the UV 0-1

I have a problem that I can't solve on my own. I want to select (or in my case deselect) everything that's inside the UV 0-1 space. I have a specific workflow that I follow and all my objects are ...
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1answer
103 views

Update child coordinates relative to parent

I'm facing an apparently well known issue with Blender that was already described here. Basically, when I create a new object at world level and then make it the child of another object, its ...
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1answer
88 views

Copy light location in relation to object

I am just starting out with blender and could use some help. I imported an .fbx from Revit and it works great. I have some streetlights in this project and when i change one of them in blender then ...
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58 views

How to fix an image texture to object and camera?

I've looked for a similar problem but couldn't find anywhere, so here it goes. I'm having an issue with fixing the position of this image in the body of the sphere, as you can see, it leaves the ...
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1answer
101 views

Understanding axis locking and local coordinate systems

I'm having trouble understanding axis locking methods, specifically in regards to local coordinate systems. I have three questions about this topic. In most explanatory threads on the internet its ...

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