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1500 questions
30
votes
1 answer
Extracting a UV layout
I have a 3D truck model already textured and properly imported into Blender. This is a game model and I need to "re-paint" with design from other transport companies. The problem is that I don't have a UV layout (skin template) to serve as a guide…
Pumizo
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30
votes
9 answers
Efficient way to get selected vertices via python (without iterating over the entire mesh)
What's the best/fastest way to construct a list of selected vertices for a mesh object in python?
I want to avoid iterating over every vertex in the mesh if possible, since that seems like a really inefficient/wasteful way to go about it.
There's a…
Qutorial
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30
votes
2 answers
How can I get vertex positions from a mesh?
I want to read the vertex x and y coordinates with a script or a function.
How can I do that?
The MeshVertex
appears to have no position I could use.
I'd take any alternative approach that could give me x and y coordinates.
B Newmark
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- 12
29
votes
1 answer
How to simulate a rope?
I'm trying to simulate a rope (that later might get pulled on the ends*) that interacts with some obstacles. So far I created a plane as the floor and a cube as an obstacle, and activated "collision" in the physics menu for both of them.
*(In the…
flawr
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29
votes
4 answers
How can I set and get the vertex color property?
I can't find a way to display RGB values (or equivalent) without using the python shell.
I would like to get and set color values numerically (ie. not painting), I can't find it for weight painting either (I expected it to appear in the "n" panel…
user1759333
- 391
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29
votes
2 answers
an easy way to subdivide along one axis only?
I'm making a rope for a game so it needs to be low poly. If I create a cylinder and subdivide, I get too many vertices around the circumference which I don't want. I only want to add vertices to the length axis, like slicing a cucumber for a…
steveh
- 401
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29
votes
3 answers
How can I generate an object from a mathematical function?
I have a formula that mathematically describes the heart surface in Cartesian coordinates:
$$\left(x^2+\frac{9y^2}{4}+z^2-1\right)^3-x^2z^3-\frac{9y^2z^3}{80}=0$$
Unfortunately, I have no idea how to implement it in Blender.
Explicitly, I want to…
CloneBorg
- 299
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29
votes
6 answers
Export multiple objects to .obj
It is possible to export all object from a scene into different obj files (each object in a obj file separately)?
GabrielS
- 1,380
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29
votes
4 answers
How can I add motion to a rigid body?
I'm trying to create a bowling animation and I want the ball to hit the pins.
I already added the Rigid Body physics to the objects but can't get the ball to move.
Obviously I could just add keyframes but
that seems to interfere with the Rigid Body…
Abandoned account
- 393
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29
votes
2 answers
How to batch import Wavefront OBJ files?
Is it possible to batch import Wavefront .obj to blender? I'm working on 2.69.
If I select multiple .obj files, only one gets imported. Also if I hit A on file selection window to select all files (.obj and .mtl) I get an error, nothing gets…
finsopraiets
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29
votes
4 answers
How to stretch 120 seconds of animation over 270 seconds?
I have an object with some animation (120 seconds) and I want to make this animation now play over the duration of 270 seconds. How can I stretch the animation to this new duration?
retif
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29
votes
3 answers
Could someone please explain gimbal lock?
I have read the Wikipedia page on gimbal lock, and am still confused about the entire matter. My understanding is that, using a local coordinate system, if you rotate a model about its X axis then its Y and Z axes experience gimbal lock, and become…
fouric
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29
votes
7 answers
How do I make a normal/displacement map when all I have is a photo?
In order to make a rendering look more realistic some additional maps are useful.
The documentation lists: diffuse,specular displacement-maps .
I watched a video tutorial The Secrets of Realistic Texturing which uses a commercial tool.
Are there…
stacker
- 38,549
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29
votes
1 answer
What does unwrapping a model do and why is it important?
I am trying to learn how to make small games, and every time I watch a video it says that we need to unwrap it, but they never fully explain what unwrapping does or why we do it. Is it necessary when exporting to UDK?
Batman_nerd
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29
votes
2 answers
3x4 camera matrix from blender camera
In computer vision, the transformation from 3D world coordinates to pixel coordinates is often represented by a 3x4 (3 rows by 4 cols) matrix P as detailed below. Given a camera in Blender, I need code that returns P.
Context where this shows up
It…
rfabbri
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