All Questions

14
votes
2answers
11k views

What does the Cycles Fresnel Node do?

What does the Fresnel node (in cycles) do? I know that it kind of does rim selection(similar to rim lighting), but I'm not exactly sure what it's doing. I've seen it used in many tutorials, but I can'...
6
votes
1answer
3k views

Getting the list of points that describe a Curve without converting to mesh

I've used mathutils.geometry.interpolate_bezier() in the past to create points for a curve using the bezier handle and knot coordinates. from the docs: ...
15
votes
2answers
3k views

How can I navigate the viewport using Python?

Normally, with most actions that you want to script with Python there is a pop-up tooltip that shows you the function that you want to use. However, for viewport navigation there are no pop-ups, you ...
6
votes
3answers
1k views

Does Blender have a file locking feature?

Is there some way to lock files with a password or to lock open files to prevent them from being edited by others? Use case examples: A: Jack wants to sell Blender models, but wants to ensure that ...
12
votes
3answers
3k views

Does Blender support any form of collaborative editing?

I remember there was once a project called Verse, which allowed (or at least was supposed to) collaborative editing in Blender, even using Blender collaboratively with other applications. Is anything ...
12
votes
2answers
462 views

How can I discover the author of a blendfile?

I know how to set the "Author" attribute for the blendfiles that I create, using Blender User Preferences > File. However, I have not found out how to view the ...
13
votes
3answers
4k views

What is the difference between the trackball and turntable style view modes?

Blender has two methods for model navigation using the viewport, namely turntable and trackball, with the default being turntable. When I use trackball instead, I can feel that something is changed, ...
32
votes
5answers
73k views

What are the differences between Orthographic and Perspective views?

In risk of being off topic for broadness and discussioness... but I think in the end it's a question that can't be avoided. Can someone please finally explain the difference and why we need both?
132
votes
7answers
130k views

Why does the zoom sometimes stop at a point?

I often find that I can zoom in to a point, but then cannot zoom any more, even when there is a lot of room to zoom to the meshes on the scene. This is particularly annoying in the following ...
23
votes
2answers
7k views

Is it possible to create image data and save to a file from a script

I'm currently trying to extract textures from a binary file, and ideally I'd like to save each texture to a file or embed in the .blend file. However, before saving ...
3
votes
1answer
152 views

Blender Compatibility Script?

Is there a script which can correct all compatibility breaks, (automatically looks what version of Blender the file was made with and adds whatever necessary to get it look like before)? Example: Let'...
7
votes
1answer
1k views

How do I get the path my script is running in?

I am writing a Quake 1 .BSP import script with python and I want to extract the textures from the .BSP so that the mesh can be ...
14
votes
3answers
2k views

How to model physics in Blender?

I'm robotic engineer. I'm using OpenSCAD to model robotic components (gears, pulleys, parts, etc). But I need application to model physics and interaction of the components (for i.e. how will robot ...
7
votes
2answers
1k views

When integrating live action footage and cg, how to make proper shadows for actors?

What is the best way to make believable shadows for moving actors that are standing in front of a green screen? Do you need to have a perfect modeled double that follows his movements so it can cast ...
11
votes
1answer
2k views

How can I export multiple animations into one .x file?

When I export my models and animations I use a .x (Direct X) format. I can see how this format could accommodate multiple animations. However, I can't get Blender to export anything other than the ...
13
votes
1answer
2k views

How to simulate string?

I want to make a group of party balloons. The strings on the balloons should have slack or be tight based on the length of the string and the location of the balloon. I thought the best way to start ...
6
votes
2answers
817 views

How to make the game engine render stereo on 2 monitors?

I am trying to use the game engine to display side-by-side stereo on two monitors. Does anyone know how to do this? I have been successful using the standalone player to display side-by-side stereo ...
21
votes
4answers
2k views

Do .blend files store information on which version of Blender they were created in?

I'd like to know if a .blend file contains information about the version of Blender it was saved from. I have couple of old files and I'd like to open them in ...
7
votes
2answers
2k views

Return list of associated vertex index, weight values for a given vertex_group

I am currently porting some code from the 2.49 API to the 2.6 API and looking for a nice way to replace this function call ...
10
votes
2answers
1k views

Why are materials linked to meshes by default?

Over the years I've discovered that I've had much more trouble with scenes where materials were linked to the Mesh Data. This is Blender's default. Then I'll go through the arduous task of re-linking ...
13
votes
6answers
5k views

Complex extrusion howto

I want to extrude a profile (either a mesh or a curve) along a "guide" curve such that: Its local Z axis is and remains parallel to the global Z axis at every point of the extrusion Its X axis must ...
33
votes
2answers
9k views

Generate curve from equation

I've been trying to design a dynamic sculpture which I can only define with exactitude through mathematical equations. Now, the equations yield only lines, like you can see in the animation below: I ...
12
votes
2answers
3k views

Can cycles Wireframe Input be coerced into displaying Tris, Quads and Ngons

edit 2 years later: Here is an alternative answer that meets the desired end-result using FreeStyle. Is there a way to make the wireframe input show the geometry as BMesh polygons instead of the raw ...
5
votes
1answer
213 views

Appending an object brings duplicated objects

I have a scene with three sets of three bricks, nine in total. I created eight of them by duplicating the first one and modifying them. In another scene I append one of the bricks. I get the brick I ...
8
votes
1answer
5k views

How can I set the object origin for an armature?

After importing a .bvh file from Motion Capturing, the object appears translated and its origin isn't in the objects geometric center. I've tried several options from the Set Origin menu (Shift + Ctrl ...
87
votes
10answers
62k views

How can I pause a render in progress and then resume it at a later time?

I would like to pause a render that I have started, with the intention of resuming it at a later time (but during the same Blender session). How can I do this?
18
votes
3answers
5k views

How can I generate camera shake?

I would like to generate camera shake in either a render or in BGE. How can I accomplish this?
11
votes
3answers
12k views

Where did my material / texture buttons go?

Something happened when editing a Blender scene that caused me to lose the whole texture properties window and most of the materials window as well. They all appear as normal when starting a new file, ...
25
votes
4answers
2k views

When is it useful to mirror?

Having discovered the mirror modifier I have been assuming I should always use it when modeling a symmetrical object. For instance, take a simple stool. Is it more efficient to model one half with a ...
6
votes
2answers
695 views

How to use dynamic topology for terrain modeling

I tried to get some hills and valley on a 2x2 Km plane with dynatopo, but it is invisible as it seems to be limited in the height it can produce. How can i get it to make bumps that are realistic for ...
13
votes
2answers
981 views

Getting pynodes geometric node to work

I downloaded the geometric node from git, and copied it in the addon folder of blender 2.67. Tried with 2.67b and a self-compiled svn version, in both, I can't enable it in the user preferences. Does ...
17
votes
5answers
17k views

How to get silhouette with contour rendering in Cycles

For an architectural visualization, I would like to use MakeHuman models, but: Only get them to render white with a black outline (on reflection surface too, if possible). Interact with light like ...
4
votes
3answers
1k views

Make a hole in the ground of a video which is camera-tracked?

With my trial and error learning, I managed to track a video in Blender 2.67 and make a cube (the one which is there by default) appear on the "ground" (which is a table). But how can I make a hole ...
13
votes
1answer
2k views

PyNodes, the bare basics

I know it's a very new thing (post 2.4 era anyways) but there seems to be very little documentation and examples for PyNodes in general, and the little there is doesn't seem to work in latest SVN (...
5
votes
2answers
3k views

Screen recording with Blender

Is it possible to record a non-timelapse video with Blender's built-in screen recording system? I can't set the capture time under 50ms. That means 2 frames per second.
5
votes
2answers
648 views

Is it possible to create a compositor node with PyNodes that outputs camera clip_start and clip_end?

Im not looking for a how to, but some of you may know if this is possible or not. An example of a dummy node added to compositor would be much appreciated, i can't find any (or i'm looking in all the ...
11
votes
1answer
294 views

Increase Cloud Evolution Speed?

I am trying out the Cloud Generator AddOn that comes with Blender 2.67. I have created a a single cloud and selected the CloudPointDensity texture. Under Turbulence I have changed Influence from ...
10
votes
2answers
369 views

Assigning different wire or halo materials to different parts of a mesh

This is a follow-up question to Stephen's Add different materials to different parts of a mesh? As explained there, it is possible to assign different surface materials to different faces of a mesh. ...
4
votes
2answers
6k views

Is there a working extension to import Kinect skeleton data as animation into Blender?

I already tried Bloop which would end in rewrite lots of C++ and Phyton code. The issues with bloop are described here im-so-annoyed-im-resurrecting-this-blog. For other things like RGBDemo the ...
39
votes
5answers
53k views

Snap object on top of surface of other object

How do you snap an object on top of the surface of another object? I tried using the shrinkwrap modifier but that produced weird results. If I have a cone, and a cube - I want to move the cone around ...
12
votes
1answer
294 views

Can unofficial Blender addons be included in a project as a text block and automatically register on load?

I am a keen user of Bassam's typewriter.py addon. It's not part of the official distribution, so I thought I could make my .blend projects more portable by including it as a text block. I always need ...
7
votes
2answers
2k views

How do I set a specific render engine while launching blender?

I have noticed that Blender Internal Render Engine is the default engine that is set when launching Blender. Users can change this behavior by setting a different engine and saving the user ...
8
votes
2answers
2k views

Apply rotation to camera?

So as a follow up to the gimbal lock question, I've learned that for a camera it's best to use YXZ euler model (as explained in this video). Here's the problem. ...
17
votes
2answers
1k views

How do I use the compositor to output colour based on the depth of objects?

This setup seems like it should work, but it doesn't.
40
votes
3answers
33k views

How to make a model cast shadows onto the world texture/background?

In most of my models, I usually end up setting a world background using an HDRI image of some kind or another. This has always been really useful for lighting in general or as a background for my ...
93
votes
4answers
133k views

Add different materials to different parts of a mesh?

How do you add more than one material to a mesh? I have tried adding two materials to the object, and then assigning one of the materials to a vertex-group, but I could not find a place to assign it....
19
votes
6answers
22k views

Why does a plane with an image texture show as black in Cycles?

I created a plane and added a Diffuse Material with an image as the texture, and a single lamp above it, using all default settings otherwise. Strangely, the plane appears as black in Cycles. I can't ...
30
votes
1answer
35k views

How can I duplicate a mesh along a curve?

I want to outline a curve in the form of text with a mesh (UV-sphere, cube etc.). How can I do that while saving mesh geometry without using the Curve modifier?
5
votes
3answers
11k views

Increase cycles speed for interior render

I modeled a house and wanted to render the rooms from the inside with the approximate sun lighting through the window. However cycles is incredibly slow in doing that. What should I change to increase ...
5
votes
4answers
4k views

Has anyone started a project similar to Grasshopper (Rhino) for blender?

For a while now I've been interested in prototyping parametric ways to generate geometry. The nodeview of Grasshopper reminds me a lot of the nodeviews we have in blender. I was thinking, with the ...

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