All Questions

28,157 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
42
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 ...
22
votes
0answers
870 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 ...
18
votes
0answers
639 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 ...
14
votes
1answer
2k 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 ...
12
votes
0answers
324 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
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 ...
11
votes
0answers
347 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 ...
11
votes
1answer
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 ...
11
votes
1answer
362 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 ...
10
votes
0answers
248 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 ...
10
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 ...
10
votes
1answer
5k 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 ...
9
votes
0answers
138 views

ignore self-shadows for a cel shaded effect?

So For this project i'm trying to achieve somewhat of a cel-shaded look. Cel Shading is an attempt to make 3D Art look 2D, But The Main problem I've found with Cel Shading effects is the shadows are &...
9
votes
1answer
456 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 ...
9
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 ...
9
votes
0answers
688 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 ...
9
votes
0answers
458 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 ...
8
votes
0answers
61 views

Floating point precision problem with transparency?

I guess this is a question of understanding, but perhaps I'm overlooking something which might solve my hassle with rendering of objects with transparency in cycles. I'm working on a project with ...
8
votes
0answers
132 views

How can I get a list of currently running modal operators?

Here I found a working solution using ctypes which allows to find out if any modal operator is currently running. I am not good in C and don't understand how it works. But I'm sure someone does, so is ...
8
votes
0answers
95 views

Play/animate images, spritesheets or video files in 'template_icon_view'

I want to "play" some animation in this UI space, the template_icon_view: I can load all the images I want, for example: I know that the gif format is ...
8
votes
0answers
63 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 ...
8
votes
0answers
134 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 ...
8
votes
0answers
139 views

When is the depsgraph_update handler triggered? (and how does the depsgraph work? )

I've been looking at the depsgraph changes in the documentation here, but I don't know if I understood it right: the dependency graph is a sort of diagram that links data blocks to each other so that ...
8
votes
0answers
395 views

Why were default camera settings changed in Blender 2.8?

Default settings: v2.79: Lens 35mm, Sensor 32mm v2.8: Lens 50mm, Sensor 36mm Just out of curiousity what is the reason for that change?
8
votes
0answers
272 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 ...
8
votes
0answers
564 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) ...
8
votes
0answers
1k views

Seamless Procedural Texture in Polar Coordinates

I've written a Cycles node tree to convert rectangular (X,Y) to polar coordinates (R,theta) as the basis for a procedural texture with radial symmetry. However, there is a seam in the texture where ...
8
votes
2answers
2k 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 ...
8
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)" ...
8
votes
1answer
266 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 ...
8
votes
1answer
300 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 ...
7
votes
0answers
68 views

¿Is it possible to pass a [color ramp] to a node group?

Are there any addons or other features in Blender that allow the Blender User to write nodes that pass in color ramps and reuse them in a group node? If the answer is yes, then what are the steps? ...
7
votes
1answer
439 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 ...
6
votes
0answers
40 views

Is there any way to turn coordinates into curve?

I recorded fly camera movement, so I got keyframes with coordinates. Is there any way to turn the camera coordinates in keyframes into curve?
6
votes
0answers
83 views

How to make a cellophane plastic shader/material?

I can't find how to replicate the look of this specific material, cellophane. I want to create a candy wrapper for a lollipop that I'm making for my 3D modeling class. I've tried 3 different material ...
6
votes
0answers
84 views
+50

Trying to get depth-information in Workbench

I am normally using Cycles to render large quantities of images and I'm getting the depth-values by linking the depth-output of the renderLayer-node to the alpha-input of the Composite Node. I then ...
6
votes
0answers
129 views

How to redraw status bar in Blender 2.80

I've added my own progress bar to the Blender 2.80 status bar (the footer of Blender) with the following abstracted code: ...
6
votes
0answers
222 views

official name and meanings of properties (Custom, RNA , ID etc)

I sometimes feel difficult to call type of properties which user (or add on) added. and choice of them.(set driver etc) I know there are clear difference and how to add new properties, but I still ...
6
votes
1answer
1k views

Vertex Normals different from loop normals

I'm writing a model exporter in Blender 2.77 and except from triangles and vertex positions, I also want their normals and tangents. As an example, I'm using a simple cube centered at the Origin (0,0,...
5
votes
0answers
24 views

Rendering large image sizes in Eevee (Over 64k pixels)

I am working on creating a wrap for several walls spanning 25 to 60 feet long. People are going to be looking at these fairly close so I don’t want to go below 200 dpi for my final print quality. That ...
5
votes
0answers
23 views

Is it possible to combine rigid body and soft body physics in the same object?

In blender as most of you know there is an option in the animation tab to have soft body and rigid body physics on an object. On a project that I am currently working on I need soft body on one part ...
5
votes
0answers
109 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
351 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
311 views

Respect unit scale when linking or appending objects

Appending/linking the same object with the same metric size from Blender files with different unit scales in Blender 2.8 results in objects of different sizes. It seems, Blender respects only the ...
5
votes
0answers
138 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
750 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
188 views

Blender 2.8 Cycles Projecting world background to an object

How can i project world environment hdri texture to an object,like camera mapping, i know i can use a material that has only shadows for later compositing it,and rendering the world environment alone, ...
5
votes
0answers
241 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
2answers
3k views

Making particles collide with each other? Possible? (2.8)

So I have made what is essentially an asteroid field. I did this by making half a dozen asteroid models, and then making a large cube with a couple of ‘volume’ emitters that run for a single frame. ...
5
votes
0answers
82 views

Is there a possibility to create non rounded corners with bevel tool or bevel modifier?

Is it possible to create sharp / pointing vertex with bevel tool or modifier the way it is shown on the right cube? I am able only to create the type of bevels as on the left cube - to get the ...

15 30 50 per page
1
2 3 4 5
564