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37
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
784 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 ...
13
votes
0answers
502 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
241 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 ...
8
votes
2answers
719 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
0answers
2k 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 ...
8
votes
1answer
244 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
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
1answer
1k 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
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
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.
8
votes
1answer
308 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 ...
8
votes
2answers
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
0answers
238 views

Tracking script in Python

I am attempting to make these GUI steps into a script. When I follow this process manually, I get a tracking error under 1 and I get some great matches. This is far better than autotrack. ...
7
votes
0answers
238 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
1answer
494 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
189 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 ...
7
votes
0answers
250 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
0answers
1k views

Linking object data without changing rotation?

I have multiple objects that I would like to all use the same mesh but maintain their individual rotation positions. As it is, when I link their object data, all the objects rotate to the same ...
7
votes
3answers
3k 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
0answers
286 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 ...
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
432 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
1answer
228 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
2answers
1k 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 ...
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
260 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
41 views

how to write a custom projection type?

Is it possible to create a lens shader with EEVEE/Cycles ? I'd like to have the control over the camera position and the ray direction per sample. This allows to simulate various conventional lens ...
6
votes
1answer
125 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 ...
6
votes
0answers
470 views

How to bring the context “back” after running read_homefile()?

When I run import bpy bpy.ops.wm.read_homefile() and then I replace the above with this (in the same text data block) ...
6
votes
1answer
2k views

Import fbx animation

So I have a .fbx file with a model and a ton of animations for it as separate .fbx files but when I import the .fbx animation file into the scene currently with the .fbx model it imports a new ...
6
votes
1answer
3k views

How Do I Mirror Knife Tool?

In blender cycles I am trying to mirror the knife tool but it won't work. I have tried mirroring the knife tool using the mirror modifier and using mesh options as well to mirror.
6
votes
0answers
590 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
280 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 ...
6
votes
1answer
406 views

Trails Behind Projectiles

How would I add comic-like trails to projectiles, such as arrows? I have an example from YouTube, but the effect is done in another software. https://www.youtube.com/watch?v=K4lmGGSsFYg The effect ...
5
votes
0answers
34 views

How to set default save location for an image?

Currently, when I have a rendered image (or any other kind of image) I want to save, the file browser always insists on starting the save location from my Documents folder. I would prefer to set a ...
5
votes
1answer
61 views

Lattice control of multiple objects without distortion

what i am doing : I am looking for a simple way to animate a cobblestone floor ripping apart in a specific and easily controllable way. I currently have broken down the floor into segments, each ...
5
votes
0answers
58 views

Cycles Renderer - Updating Shaders and Images Every Frame?

This question is more of a curiosity to the potential of increasing render times, however, after finding very little out about this anywhere else, I am thinking it may be an intentional feature. I am ...
5
votes
0answers
91 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
228 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
61 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
0answers
3k views

Atmospheric fog in Blender 2.8

I am a long time Blender user and I built some nice scenes with it. I also love the new 2.8 but ever since I was working with volumetrics in Blender I was never really happy with it. So what I want ...
5
votes
0answers
471 views

Blender grease pencil shape keys

is there any possible way to achieve a similar result like here: https://www.youtube.com/watch?v=Tbp95snCPr4 with grease pencil? Or is there somewhere shape keys for the internal grease pencil tool? ...
5
votes
0answers
170 views

Is there any way to get single pixel wide aliased lines?

I'm trying to get clean, one pixel wide lines on my renders like the pic below, but nothing I try seems to work. I've tried freestyle with one sample, but I get extra pixels at some parts of the ...
5
votes
1answer
271 views

Refract grease pencil object?

so I'm trying to use the new 2.8 Update to do a grease pencil animation behind a dirty glass window in Eevee, but the grease pencil object does not get refracted or effected at all by the glass shader,...
5
votes
0answers
170 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
296 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
116 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
124 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 ...

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