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21,242 questions with no upvoted or accepted answers
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35
votes
1answer
2k views

Custom trackpad pan/zoom/rotate behavior add-on

I'm trying to write an addon to customize the trackpad panning, zoomimg, and rotating gestures, but can't find a way to read the actual trackpad parameters for position and so on. The properties in ...
16
votes
0answers
738 views

Property Panel Custom Popup Menu when user presses hotkey over an input field

is it possible to trigger this kind of menu: in the property panel when I press a hotkey over a button/input field? I want to specifically,when the user presses a specific hotkey when over an input ...
14
votes
1answer
1k views

How can I remove a linked library with Python?

Load and add linked object I'm working on an add-on. The purpose is to link and un-link groups from another blend file. Thanks to stack exchange and the Blender documentation this works pretty well. ...
13
votes
0answers
451 views

How to make a dynamically expanding menu in Blender?

Say we want to navigate a tree structure without knowing all the data ahead of time, is it possible to do this in Blender? For example, a menu which dynamically loaded a directory hierarchy from the ...
11
votes
0answers
175 views

Generated Previews - low-resolution and dark shading fix?

(2.79 - Blender Internal) Generated Previews is very handy feature for previewing assets when importing / linking, I would just like to know if there is a way to: Make thumbnails lighter to match ...
11
votes
1answer
1k views

Per-Vertex lighting in GLSL?

How can I achieve per-vertex lighting (like in single/multi-texture shading) in GLSL with all of the other GLSL features (like buffer shadows, texture layers, etc.)? Bonus points if it can be done in ...
10
votes
0answers
592 views

How to get Blender 2.80 to render through an ssh connection? [Minimal working example provided]

I am using Blender 2.80 on my local machine and the machines I am connecting to via ssh. My local machine is Ubuntu 18.04. I hope to use Blender to programmatically generate images as part of my code ...
9
votes
3answers
3k views

How to bake high to low poly normals for multiple objects on one normal map?

Imagining I have multiple objects which make up a scene including high poly and low poly of each object and I want to put all of the baked information onto one map. What would be the easiest way to ...
9
votes
2answers
743 views

Make path move like snake in snake game

In my game I have a Nurbs curve in the XY plane. I have a rigged car, that has a follow path constraint, so that it follows this curve. I would like to make the ...
8
votes
2answers
625 views

Visible gaps in mesh when using adaptive subdiv and multiple materials

No matter what I try, I can't close a visible displacement gap between materials when I'm using Adaptive Subdivision. Enabling Auto-Smooth in the normal options fixes gaps on the corners of objects ...
8
votes
1answer
172 views

How do you avoid dependency cycle between two soft bodies?

How do you setup two softbodies with collisions without getting a dependency cycle ? A depends on B through Softbody Collision B depends on A through Softbody Collision Those two objects interact ...
8
votes
0answers
207 views

Branching and swirling mesh on a ring

I need help constructing this ring. I thought it would be simpler, but the splitting and recombining of curves that swirl in variously symmetrical ways make the intricacy a little more difficult than ...
8
votes
2answers
181 views

Animate Curve along mesh surface

i am trying to find a way to aproach, animating a curve along a mesh surface, like having a wire creating a mesh. I thought about having a curve snapped along the mesh and then animate the wires. Do ...
8
votes
1answer
2k views

Toon Shader Cycles- Change Color of Shadows

I made a character for a mobile game in Blender, Cycles, and i used a toon material as shader. Now, for each toon material i create, i used an 'Image Texture' as a color gradient. I like the result, ...
8
votes
0answers
206 views

Problem with sculpting, using graphics monitor

So I have this graphics drawing monitor Huion Kamvas, that I'm trying to use with the blender sculpting, and I am getting this weird issue. Whenever I try to put the first stroke on my object, ...
8
votes
1answer
997 views

Apply force along normals of cloth mesh

I'm trying to simulate an inflatable mesh by applying a force field to a cloth. As air pressure always acts perpendicular to a surface it might be a close enough approximation when pushing all ...
8
votes
1answer
251 views

Why can't I smash these 2 fractured objects together?

I have 2 objects that have been fractured, but for some reason I can't apply keyframes. I tried testing animating a cube to see if there were larger problems with settings but that worked fine. ...
8
votes
0answers
272 views

How to call original operator from operator's override?

I would like to amend functionality of an existing operator with a condition check and then "proceed" with the original operator (if condition check allows it). It is essentially what is done in ...
8
votes
0answers
2k views

How to get actual rendering progress and estimation from render_stats python handler?

There is render_stats bpy handler It seem like it is invoked every time rendering engine prints to console smth like ...
8
votes
0answers
2k views

How does blender calculate poseBone.matrix?

How does blender calculate a poseBone.matrix through the hierarchy chain? A bone's final matrix is a transformation matrix which defines the bone in armature-space in the current pose (M1). I want to ...
8
votes
1answer
293 views

What do different execution contexts mean?

The documentation says that I can invoke an operator with a different execution context, either invoking or executing it. What I know is that invoke will most often ...
7
votes
0answers
183 views

Copy scene node tree to other scenes

I have a Blender file wih many scenes and I want to copy the node tree of one of them to the other scenes. From Blender interface it is a very simple task, in python I have tried using bpy.ops.node....
7
votes
0answers
477 views

Visualizing 3D voxel data in Blender 2.8

right now I'm trying to visualize my scientific 3D data in Blender 2.8. So blenders built in textures or smoke simulations do not lead to the goal. I've read that older releases of Blender do support ...
7
votes
1answer
382 views

Workflow: Cloth simulation without disabling armature

The typical workflow for cloth is to have areas that are attached to the body be Pinned, and influenced by an armature limited to the Pinned group. The rest of the garment would not be influenced by ...
7
votes
0answers
244 views

Blender on Windows is skipping python script. (brenda on windows)

We've been using Brenda for quite some time now for rendering architectural stills. Since our editing stations are doing nothing at night, I started making a desktop app that allows you to pick jobs ...
7
votes
3answers
2k views

Weight Painting/Deform in shoulders

So I have been messing around a lot with the weight painting on the shoulders. I'm still new so I don't know much about the type of weights should be on the shoulders, I've tried a lot of different ...
7
votes
4answers
1k views

How do I color the shading of a material?

Some art styles increase the saturation in their shading, I'm trying to achieve this effect as seen in cell #2 of my example image. Right now it looks like cell #3, which lacks this and looks dull in ...
7
votes
0answers
1k views

Does a model exporter embedding materials as GLSL scripts exist?

as described in Blender Shader in OpenGL/GLSL, it is possible to export the (unoptimized) GLSL code generated by Blender for a given material. Since the viewport can use such GLSL for real-time ...
7
votes
0answers
426 views

Save screenshot (bge) without writing to disk

This is a little odd but I need to save a screen-shot as an array (numpy array for eg) without writing to disk. The idea here is to create and then call the array once per frame in an external script ...
7
votes
0answers
1k views

Using a video from the Video Sequence Editor in the Movie clip editor?

So what I want to do is track a video that I have edited in NLE, but when I click on the movie icon whilst in the Motion Tracking layout, the list is blank.
7
votes
1answer
206 views

3D Stereo Active shutter vision LCS glasses realtime viewport?

Is it possible (or maybe already implemented by someone) to configure the viewport to display stereoscopically at a set frequency dependent on the given screen refresh rate, while having the frequency ...
7
votes
1answer
1k views

Antialiasing textures in cycles (Blender 2.77 and higher)

I would like to get an answer to a frustrating question. https://wiki.blender.org/index.php/Dev:Ref/Release_Notes/2.77/Cycles In this link is "Anti-Aliasing is now enabled for baking. (c359343)" ...
7
votes
1answer
2k views

File format changes from MPEG to .DVD

I have an issue with rendering an animation. I set the file format to mpeg but when it finishes rendering the output file that it gives me is '.dvd'. How do I solve this problem?
7
votes
1answer
237 views

How to load an internal blender image using OSL?

OSL has the texture command that we can use to load image files and map in an object. Dfelinto made a nice video about it some years ago. https://www.youtube.com/watch?v=V5N2rnFtSlw We also have many ...
6
votes
0answers
1k views

Keying visibility of object collections with single property in 2.8?

I know this is a common issue, but I can't believe there isn't a better way to hide/reveal objects in an animation, besides moving them far into the distance from camera, scaling to 0 or keyframing ...
6
votes
0answers
259 views

How can I make a silky, wispy smoke effect?

A while back, I asked a question about how to make an effect of blood in the water. No one answered, so I assume that the question was too specific. I've elected to delete that post in favour of a ...
6
votes
0answers
164 views

Set Active FCurve in Graph Editor through python

I'm trying to set an FCurve in the Graph Editor to "Active" through python. In the API FCurves don't actually have an "Active" property, but manually click-selecting a channel or keyframe on an ...
6
votes
2answers
879 views

Make particles follow true (material) displacement

I'm experimenting with some procedural surfaces and I have a particle system on it. The problem is that, even though I'm using material displacement, the particles lie flat on the mesh. Is there a ...
6
votes
0answers
542 views

Stencil Image low resolution

I am trying to texture paint a mesh using a pretty high resolution stencil image.. But when i try to zoom into the image to paint the details...it appears very low res... Is there any way to make it ...
6
votes
1answer
229 views

Change multiple custom properties simultaneously

When I ⌥ Alt LMB on a transformations property, I can change multiple the property for multiple object with once input action. The property turns blue for the duration of the operation. Is ...
5
votes
0answers
72 views

How to access Density/Flame grid via Python in 2.82 (Mantaflow)

Does anyone know how do I access the density/flame grid for the new Mantaflow fluid simulation engine in Blender 2.82? The old path still exists: ...
5
votes
0answers
139 views

Get image pixels from multiple viewer nodes

For Blender 2.81 and Cycles render. I want to access all of the following data passes from a Python script: Z Normal ...
5
votes
0answers
39 views

Calculating position difference in a driver

Suppose I have an object, that I move from A to B (by pressing the G button) on the XY plane. I want to automatically orient it, so it always faces the direction of the movement. Furthermore, I want ...
5
votes
1answer
100 views

How to emit particles at intersection of faces (Scan animation)

I want to make an animation that explains laser scanning. It will consist of two videos. One of the videos is rotating duck with a laser on it. You can see the animation here. The animation is by me ...
5
votes
0answers
166 views

Can Blender Internal Render passes be put back together again?

I'm stuck with a simple task. I need to tweak some render passes of the image, and then put them back to the combined composited image. For Cycles I use this scheme from the manual: It works as ...
5
votes
0answers
271 views

Update function for NodeSocket?

How do I set a callback for socket input change (value or link change) when having a custom node? I have a socket defined like: ...
5
votes
0answers
101 views

How does “Flip Normals” affect Face Corner Data?

I use the "Normal Edit" and "Data Transfer" functions a lot, therefore I'm working with custom Normals with Face Corner Normals that differ from the Vertex Normals. The Pink lines represent the Face ...
5
votes
0answers
114 views

Why does Select-All in Face-Select mode also select isolated edges?

Blender v2.79. Let's say I have to extrude all faces of this planar construction containing two edges not included in faces, and one isolated vertex: In this object, there are not hidden ...
5
votes
1answer
143 views

Smoke Simulation Vibrating

Last week I started making a volcano that was starting to erupt. I've got some sparks and I made a nice smoke simulation. I clicked Bake All Dynamics and then rendered. The result was a nice volcano ...
5
votes
0answers
6k views

How can I achieve a Japanese style cell animation toon shader look in Blender?

Here are my examples. Edit// Here is a video showing what I want exactly, how "shaders" and "renderer" should work. https://www.youtube.com/watch?v=XQLgn9-xqQc notice how easy it is to set the ...

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