All Questions
Tagged with coordinate-system or coordinates
377 questions
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3
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106
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Rotating the vertex to the exact height
Vertex A is the center of rotation.
The projection is Right Orthographic (X Viewpoint).
How do I rotate vertex B (along with vertices C and D), to the same height (Z) as point A?
Vertex A value for Z ...
- 55
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0
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18
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Dimensions and coordinates don't match up
We can see here that the object has a Z dimension of 2.44m, its origin thus being at 1.22m since it's bottom face is resting on the plane of 0:0:0 :
However when I select a bottom point, it shows its ...
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2
votes
1
answer
43
views
Script to import coordinates from CSV and create a bezier curve with control points
I am trying to import Bezier curves from CSV into Blender using a script. In this question I could find the solution, but without importing the coordinates of the control points but only the ...
- 91
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0
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27
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How to create a 3D array of items based a matrix with Z-coordinates?
I'm new to Blender
I want to create an X-Y-Z matrix with identical glass spheres. This is the model for building a very nice lamp in my hallway. In the X-direction I have 27 available positions, in ...
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1
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0
answers
34
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How can I keep each objects gradient transition co ordinates when joining all?
I have a color gradient on multiple objects origin so colors mix in the middle but when I join them the origin sets gradient to new mass object which makes sense but I need it to remain centered on ...
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1
vote
1
answer
19
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How can you work on a mesh in rest position?
Is there a way to orient a mesh to the global XYZ temporarily, or the viewport camera to the active mesh local XYZ? It's easier to do editing on a mesh when the transforms are removed, but it's a ...
- 901
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24
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Raycast - Why are the ray intersections not at the right location?
I have an ellipsoid and a conical frustum.
The ellipsoid is centred at cellipsoid, and the small-radius frustum base at cfrustum....
- 37
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16
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reversed positioning of object
I have a problem with moving my object. When I drag the body of this man, its mesh goes in opposite way of how I drag the origin. First picture is before, second is after i dragged.
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0
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7
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Blender 3.4 coordinates in file unable to move objects [duplicate]
I just ran into this problem with an old file, where there are large coordinates in my viewport when I select an object, and when I try to move that object only the coordinates move and not the object ...
- 1
0
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0
answers
39
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MPFB2 Rig Helpers Transform Differently for Left and Right Side of Armature
I try to translate an animated armature and found in Graph Editor that right side rig helpers translate correctly but left side's do inversely.
What I do is, everything with default properties:
In ...
- 11
0
votes
0
answers
28
views
Get edges with subdivision modifier active?
I'm trying to get edges when subdivision modifier is active.
Using depsgraph method gives the result as if the modifier had already been applied.
...
- 649
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0
answers
201
views
Yaw Pitch Roll of camera in local coordinate system
I retrieved camera properties from a bunch of Unreal scenes that I want to reproduce in Blender. The Unreal coordinate system is quite different: it is a left-handed one, cameras face +X instead of -Z ...
- 31
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0
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17
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Question about bpy's matrix_world to torch3d coordinate system conversion
From the visualization results, it appears that the camera pose I converted is not accurate. It has moved backwards. Is there have any suggestions ?QAQ
1.difference of cameras space
2 some discussion
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0
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28
views
Absolute and Relative Coordinates; Camera Distortion; Calculation
Hello Blender Community,
Question: How close is the object in the image? What are the absolute coordinates from the image's perspective? What is the error?
An object:
A frame with two reference ...
0
votes
2
answers
132
views
3D axis are gone
The little 3D axis in the upper right corner were gone for months for me, I've tried everything with no results. I hoped that in version 4.0 it would be fixed but still nothing. I have all the gizmos ...
0
votes
1
answer
102
views
Recreating clip space coordinates in Blender shader nodes
I've been trying to recreate the clip space coordinate system in Blender's shader nodes. From what I know, the only coordinate systems you have access to are object coordinates (position), world ...
- 198
1
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0
answers
44
views
Calculate the pixel location of an object in the rendered result
I'm implementing a simple script to calculate the location of an object (which is a 2D plane) in the rendered image:
...
- 147
1
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1
answer
39
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How to set the axis of blender so that it is consistent with the rotation direction of the sensor？
I am a beginner in blender. I use the serial port to connect the posture sensor with the blender. Now I have a problem: I rotate sensor around the Z axis, but in blender it rotates around the Y axis. ...
2
votes
1
answer
100
views
How to add object coordinates to instance coordinates?
I'm trying to create infinite "Teleport Waves"
and everything is going well until I try to move the teleport itself. Then the waves stay in place.
My attempts to intercept the coordinates ...
- 1,369
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0
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16
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Newbie question- Exporting X&Y screen coordinates of a marker to csv or Excel [duplicate]
super noob here, first time posting.
I have a problem which I think you guys will be able to answer easily. I have several videos of an unbalanced disc and what I would need is to extract the vertical ...
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0
answers
24
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How to use .txt with 3D coords in BVH?
I have 3D coords from a hand mocap , the coords are (x,y,z), there are in a .txt list with 3 cols and each row represents a point. How can I transform them to BVH format? Any script, web, video or ...
1
vote
1
answer
50
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When I select the Donut object thousands of giant coordinate systems show up
I'm a Newbie in Blender. Now I'm learning Blender with the Donut Tutorial.
I met a question today about the coordinate system. When I chose an object (Donut), then came a giant coordinate system, or ...
- 21
1
vote
1
answer
50
views
Object is not perpendicular to the axis
I have a model which is created by 3d reconstruction and the human is connected to the floor. I found that the human body is not in the same direction as the z-axis, as figure 1 shows. What I want is ...
- 45
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258
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Blender import camera from COLMAP has wrong direction
I have the image.txt files from colmap, which includes the quaterion(QW, QX, Qy, QZ) and the translation(tx, ty, yz). I use the following code to do the transformation, but the direction of the camera ...
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-1
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1
answer
346
views
Exporting X & Y coordinates to file
Im trying to export X & Y coordinates of certain object to file with this script I found years ago somewhere:
...
1
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1
answer
73
views
Uv coordinates values seem to be placed on the wrong vertices
Let's say I have a simple plane in which I have created a UV with the "Smart UV Project":
I've then created this simple script to put the UV coordinates (x and y position) on each vertex:
<...
- 11
0
votes
1
answer
66
views
Get the coordinates of the intersection between a line and 3d model
I'm new to Blender. I want to know if there's a way to get the coordinates of the intersection point between a given line and a 3D model, just like the picture below. Thanks!
- 45
-2
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1
answer
591
views
Symmetry in sculpt mode is uneven
I am facing problem regarding the symmetry in sculpt mode version 3.3.10.0 . I even brought origin point to the center but still symmetry is uneven.
- 43
1
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1
answer
46
views
Symmetry axis is off center when joining
I am new to blender and still learning to navigate the interface. I am working on this model and my axis went off center after I joined the parts of the model. Now I can not work on the model ...
0
votes
1
answer
105
views
Geometry Nodes: Set Curve Line end at Global Z=0 (Blender 3.5.1)
I'm trying to use geometry nodes to create a support system for 3D printing with a thin wall as the connection point:
What I want to do is have columns going from the B points down to the floor at ...
- 1,951
2
votes
1
answer
492
views
Mapping Real World coordinates on 3D model of Earth
complete Blender noob here. I've worked with other node-based programs in the past so the geometry nodes seem (for the most part) intuitive to me. But Blender is obviously a different kind of beast...
...
- 23
2
votes
2
answers
367
views
How to position numbers on faces
I want to position numbers on a die, and looking for an efficient technique to do that. My current approach is to copy Median XYZ of a face to coordinates of an object, can I do it in at once, instead ...
- 97
1
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1
answer
548
views
Script to import coordinates and create a bezier curve
I would like to create a script to import coordinates from a CSV and create a bezier curve along these coordinates. I have developed a script that imports the coordinates, but it creates a curve along ...
- 13
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0
answers
89
views
How to Snap Cursor to Selected, but accounting for the Modifier result?
Snap Cursor to Selected places your cursor at the selected vertex of your mesh (or the mean of multiple selected vertices).
The trouble is that sometimes the vert ...
- 19.4k
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393
views
Get vertex coordinates of model mesh in every frame of animation
I am trying to get the coordinates of all vertices of a model for each frame of an animation in Blender using python. I have seen a lot of answers from 50 years ago like Iterating vertex of every ...
0
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1
answer
640
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 ...
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0
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392
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How to get coordinates of intersection between a plane and an object (using python API)? [closed]
Like showing above, I would like to get the coordinates of intersection between an object and a cube(the cube also could be a plane).
That's to say, I want to get the intersection coordinates in the ...
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0
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258
views
How to get the pixel coordinates of a rendered object
I want to render an object (plane) and want to know exactly where this object is in the image.
To do so, I discovered this answer which was already quite helpful.
Here the code I use, based on the ...
- 153
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1
answer
383
views
Morphing 3D objects with Coordinates using Python/Geometric Nodes
I really need your help. I am looking at morphing, say a cube into a sphere. I wish to do this by scaling/transforming specific points of the cube to new points (with coordinates) in order to form a ...
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1
vote
1
answer
611
views
How to correctly convert from world to camera space using convert_space()?
I'm trying to use the python API to get the transformation matrix from world space to camera space. I want to do this by using convert_space() but I don't manage to ...
- 113
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1
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480
views
Selecting vertices of a mesh using vertex coordinates
I have two meshes: (A and B) that are partly overlapping and have some vertices with different indices but the exact same global location. I would like to look at the vertex locations of mesh A and ...
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0
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100
views
Display and animate object in local axis
I would like to rotate an object along one on its local axis ; while I can do this via the viewport by selecting Local orientation, I would like to set keyframes using the Transform panel. However the ...
- 177
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0
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201
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Getting the global coordinates of a vertex from mouse location
I have a some code here that I combined from other people to test out implementations on how to get the correct global coordinates of the vertex that your mouse is hoovering over.
There are 2 ...
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100
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How can I change the coordinate of part of an object to change the coordinate of all objects?
Imagine I have an object which is a vertebra with some markers on it. When I go to the edit mode and select each marker, I can easily see their coordinate of them. Now, if I want to register new ...
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0
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423
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How to get/copy pixel coordinates or rgb values from 2d image, in compositor editor?
Many times, i need to get and copy pixel coordinates (as well as rgb values) from the composite 2D image in the backdrop or image viewer. i can see it from the image editor by clicking in the image ...
2
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0
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427
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3D world to 2D image transformation with equidistant camera model
I'm currently implementing a simulation, where a 3D point needs to be transformed to a fisheye image with the equivalent of Blenders 'PANO' camera and the equidistant camera model. Does anyone know ...
- 21
1
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2
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518
views
Distribute pointed objects on a curved surface with random orientation and constraint
I am trying to put objects with random orientations on a curved surface, however the orientations must be limited to directions pointing away from the surface, thereby, avoiding clipping the surface. ...
- 11
0
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0
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64
views
Import UV Mapping on mesh
i would like to import a uv mapping coordinate to a mesh, but the code didn't work, cause there is an error on Blender 3.3:
File "C:\Users\Marku\Desktop\Blender Plugin\uvw.blend\Text.001", ...
- 1
0
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1
answer
212
views
How to move an object in relationship to a specific vertex numerically?
I am coming from a "2d-world" like Adobe Illustrator where I easily could move objects in relationship with their "corners" numerically. How do I do this in Blender? Let me explain:...
0
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1
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399
views
Get the actual position of bone (head and tail) even when armature is rotated
I would like to know if it is possible to get the real coordinates of a bone's head and tail when the armature is rotated.
I already got something working with translations of armature but can't ...
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