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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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Homography between two planes with rotation and translation

I generated two camera views using Blender with rotation and translation. Now I want to know how to compute homography between camera view A to B? I found how to compute homography for rotation only ...
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1answer
43 views

Is it posible to get the coordinates of the shadow from its rendering?

I need to know the volume of the shadow cast by an object by a light or at least the coordinates of the contour of the shadow in the floor. I thought that it would be possible to get the coordinates ...
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How to get coordinates of special vertices in an animated mesh with Python?

I try to get the positions of special vertices while animating. I only found quastions about positions of special vertices in one frame or positions of all vertices in an animation. But I need the ...
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1answer
21 views

how to know which pivot object is using (Local/World)

i have 2 identical objects with identical location numbers, but theyre located in different places. this is so annoying to deal with. how do i see the world coordinates? here is example of what i mean....
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How can I draw a line between 2 specific points?

I want to find the center axis of the inner irregular cylinder below. I want to determine 2 points and draw a line between them so I can find the central axis. Is there a way to do this?
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What is the between normal and local space?

So I get the difference between global space (or world space, whatever you want to call it) and local space-- global space looks at locations in a 3D Cartesian Graph that has a fixed orientation/...
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Change the Coordinate System for Unity Export? [duplicate]

How to change the axis Z and Y? Make it so that it was like in Unity or maybe this can be done in Unity?
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1answer
19 views

Take current rotation or coordinates as zero?

Let's say I have object rotated at 19 degrees and I want to keep current rotation, but I need to see 0 in rotation field.
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Is something strange about camera coordinates that I need to know?

I have a camera in the same position as a rig, paranted to it. At least, it's supposed to be in the same position but I accidently moved the camera (not the rig). To put back, I thought I'd copy the ...
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How can I determine the coordinations of the deepest point of a pit located on a 3D object?

I am trying to find the deepest point of a rough pit located on a rough 3d object. The pit is full of irregular vertices. https://drive.google.com/open?id=1muCjhRDHhwo3AnY194BAvkaCpPIdyWhx I cannot ...
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2answers
62 views

Camera Rotation in World Coordinates?

Are the coordinates of the camera in the world coordinate system? If they are not, how can I change to the world coordinate?
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How to link a mesh to scene with the desired local coordinate?

I create one mesh from another one via script. The rotation of the new mesh is different from the original one when I link the new mesh to the scene, because the original mesh has a Y-up and Z-forward ...
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1answer
93 views

Convert Object texture coordinates to UV

I have an object which as a texture that is positioned using Object Texture Coordinates that uses an Empty as its positioning object. I want to convert this to a UV texture. In Edit mode I press U > ...
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Position object relative to a bone's tranform and preserve position when exporting FBX to unity

I'm not sure if this can be posted here since it also involves unity, but I am convinced the answer is in blender. I have a character model and I made a nice head of hair to sit atop his barren crown....
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How to add two shapes coordinates?

Ok. Imagine yourself that I have two grids with the same amount of vertices. I sulpt a face of a man out of one of them. On the second one I sculpt a big "Z" letter. How can I combine those grids ...
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1answer
37 views

How to animate an object rotating on its own axis?

I want to animate a planet spinning on a slight tilt, like the earth does. I want to use a generator (in the graph editor) to have consistent, procedural motion, but animating any single axis of ...
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1answer
116 views

How can I export STL->OBJ without the coordinate system getting messed up?

We use a 3rd-party tool which generates STL files with a specific medical coordinate system (either RAS/LPS for those interested). Our software can only load the 3D meshes in OBJ format but whenever ...
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1answer
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How to write python to show Toruses from an imported txt file containing center coordinates

I have a question about Python. By the way, I'm beginner of Python and English. I wrote a script showing Toruses from an imported txt file containing center coordinates, but I got an error at ...
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Vertex coordinates in console are slightly different than in the UI

If I have a default cube, dimensions 1 meter on each side, and I run a script to output the vertex coordinates to the console, they print correctly (i.e., the values are either 0.0 or 1.0). However, ...
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1answer
68 views

Convert Cycles depth/z to distance to image plane

I want to simulate a depth sensor with Blender Cycles, but the z-pass returns the length of the sight ray and not the distance to the image plane. Here is a formula to convert the depth map, but I am ...
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1answer
40 views

Change pivot point to selected point [duplicate]

In the attached picture, that the model is in the center of the point. I want to change from pivot point to point, where I want to picture it. In Maya 2017 Student version works like this, when it is ...
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Bone scale vs vertex scale

The vertices and the bones seem to be working with a different coordinate system. In the image, the bone and vertex at roughly the same height are mis-scaled by a factor of 40. When I export it into ...
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1answer
92 views

How to translate plane coordinates x,y to equirectangular?

I have a procedural texture with a circle made by formula X ** 2 + Y ** 2 < R ** 2. It looks like a circle on a plane. But if I try to use this formula in the World environment - the circle is ...
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2answers
558 views

How can I export or print coordinates of each selected vertex?

I am pretty new to Blender. I need to get coordinates of each selected vertex somehow. I don't really want to manually copy coordinates of each and single vertex that would just take a lot of time. I ...
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2answers
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How do I generate pixel-art friendly UV maps?

Here and here, you can see examples of what I'm trying to do in terms of texturing. The UV maps shown for these models appear to be very clean and uniform, pixel-friendly and keep distortion/artifacts ...
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1answer
42 views

Local translation with pivot point established on the active object

Whenever i try to translate objects, with pivot point established on the active object, every object translates in their own local coordinates. Video will explain it better: youtube.com/watch?v=...
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1answer
61 views

Coordinates of the segments of the hair particle

All Hair Particles are based on Vertices. I activated the option in ParticleSystem "Advanced" and switched to Verts. A hair has 4 segments. I would like to read these segments per hair as coordinates. ...
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How to add a certain number to an object's coordinates

I'm currently making a first person game in BGE. I animated an action for the camera of slowly going up and down to make the walking more realistic. I added it to the player's logic, but instead of ...
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234 views

How to show global location coordinates

How can I see the global coordinates of a bone? Blender only show the transform for local coordinates.
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1answer
77 views

Compute object's foreground mask in screen coordinates

For a research project I am using Blender's Python API to generate some simple random scenes. In addition to the generated renders, I need to acquire a 'foreground mask' in screen (image) coordinates ...
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49 views

Placing cameras like a triangle

I am trying to place the cameras in a equilateral triangle fashion. But, I am quite not sure if my coordinates are correct. How do I find co-ordinates to arrange them in a equilateral triangle? Thanks ...
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23 views

Display coordinates in render output

Is it possible to write into some kind of a label data from the Object properties? I.E If I move a cube in the 3D space, can I write down on the rendered output the cube's coordinates on every frame?
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2answers
60 views

How do I get the object to the ground floor grid?

I have an object that is far away from the starting point grid. When I Add a Bezier Curve, it is on the grid and switch to Top view, it is too far away to see and manipulate. How do I get my object in ...
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Snap an empty to a bone's coordinate, quickest way?

I'm doing a ragdoll system with lots of rigidbody constraints. I use empties as constraints, which will be snapped to the location of a bone. The problem is that my armature has too many bones and I ...
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1answer
117 views

Script for getting Camera Look At co-ordinates

(I'm new to Blender) Using a script, how can I get the an X, Y, Z set of co-ordinates showing me where the current camera is looking at? My use case is that the user just moves the camera visually ...
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1answer
44 views

Local Coordinates Assignment

I have a modeled SCARA robot in blender, this is moved through the use of a sensor and a python program. The problem now is that my inverse kinematics solved angle does not coincide in run in blender. ...
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154 views

How to change the Coordinate Reference System of a model to align with another?

This is my first question on Stack Exchange :) I just can't figure out how to align two models based on different Coordinate Reference Systems (CRS). This is an imported DXF file based on Amersfoort ...
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1answer
109 views

How to get a Fresnel node to only affect one part of an object? Ie) The top of an object

Just had a quick question. In the image below, I am trying to get dust to show up at only the white parts of an image. I am trying to get a PBR dust effect where when you look at it, at an angle, ...
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1answer
85 views

Camera coordinate appears to be left handed

It is weird that I have a camera that has a left-handed coordinate system. All the other cameras are right handed. Left handed camera: Right handed camera (all others are right handed, too): I can'...
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1answer
28 views

Why doesn't my script work on all of the vertices of a mesh?

So, I wrote this script to read UVs from a mesh and use the values to position the actual vertices on the same coordinates, but in 3D space, here's the script: ...
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1answer
240 views

Cycles: Generate 3d coordinates before modifier stack is resolved

Im trying to create a volumetric material that uses a 3d texture. I need this volumetric to be animated along a curve. Right now, I have the material using generated coordinates. But the 3d texture ...
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animate rig with 3d coordinates

I have frame-by-frame x,y,z coordinates for each joint of a human skeleton. How can I use these to animate a rig? The coordinates aren't perfect so the length of the bones may vary slightly throughout ...
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1answer
29 views

Why does number of coordinates increase after deformation?

I applied several deformation on grid, and exported it as ply file for each deformation. However, the number of coordinates increases as the deformation becomes intense. Is there any way to apply ...
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93 views

How to reproject a rendered image onto a plane intersecting camera's view?

I am trying to mimick the process of mapping an 2D image onto a 3D surface (or "orthorectifying" for aerial/satellite image). The set-up is the following: a ground plane (in green in the figure ...
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274 views

UV Mapping, XZY coordinates to UV coordinates

I'm kind of new to this and found myself having issues wrapping my head around UV-mapping. (also not 100% sure if this is the correct forum for my question) I am working on a small rendering engine (...
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291 views

Copy and paste X, Y and Z values

In Blender 2.79 there is a new option that allow you to copy all the transform values (x, y, z) at once in the N-menu with CTRL + ALT + C for copy and ...
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1answer
113 views

Blender 3D objects are shaking in viewport when it's too far from center

If you place any object in the viewport really far away from the center and start to rotate, it starts shaking/giggling... Does anyone know how to solve this problem by not moving objects to center? ...
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Why lattice coordinates differ in edit mode when selected?

Sorry, yet another question about lattice from a beginner... Consider a scene with a mesh (say, a default plane) and a (default) lattice. Let's run the following script in edit mode and in object ...
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1answer
317 views

Armature Bone Global Local coordinates python scripting

I'm writing a Python script to move a bone of an armature to a desired Global 3D point. When armature has only one bone my function works well, but when I add not connected bones, there seems to be an ...
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1answer
51 views

My global axes got rotated

My global axes are not not level anymore. How can I reset? So I don't mean an object, but the actual coordinate system.