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27
votes
1answer
52k views

How can I render an object with an hdr background?

I have an object with an hdr for the background. What do I do in Cycles to render the background with my object? How is this different from an ordinary render in Cycles? The hdr is a big one, 350MB.
27
votes
4answers
17k views

How to install Pip for Blender's bundled Python?

Blender comes with Python, and includes a stand-alone Python executable. However pip is not part of the official Python distribution so it needs to be added separately. How do you setup ...
27
votes
3answers
17k views

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 ...
27
votes
2answers
20k views

How to Construct a Diamond or Other Gemstone Material in Cycles

What would be the material or shaders node set up for a smooth gem in blender cycles engine? I want a result similar to this image:
27
votes
3answers
8k views

How can I change the centre of rotation of objects during an animation?

I have developed several puzzles in Blender, and to test them I wanted to animate them. The first problem I encountered was the rotation of an object around a central hub. Between keyframes the ...
27
votes
1answer
49k views

Why can't I import a SVG file from Adobe Illustrator or Inkscape?

I've tried multiple times to import a SVG file from illustrator CS5.5 to Blender 2.71 and 2.73. However, I do not see a mesh, curve, or anything pop up in my "Outliner" window. So I know its not so ...
27
votes
1answer
4k views

How can I create Light Streaks in Cycles?

I'm trying to make a light paths like there: To achieve this light threads (streaks) I used a particles emmiter with shining icospheres and motion blur shutter like Andrew. I got this result: First ...
27
votes
2answers
52k views

How to convert from high poly to low poly

I'm making a game in the unity engine and for my models i'm using blender 2.6. The thing is that i'm pretty new to graphics design (modeling, sculpting, etc) and by following some tutorials i've ...
27
votes
1answer
121k views

How to import a .mtl file?

I am new to Blender. I downloaded a .obj file of a plant model. When I unzipped it I found two files (.obj and ...
27
votes
3answers
12k views

Is the Blender GUI package available for other programs?

I really love the look of Blender's built-in GUI, and would potentially like to use these tools in some of my other Python applications. As I understand it, Blender created all of these tools from ...
27
votes
3answers
25k views

How can I use my Blender models in WebGL

I would like to create WebGL applications and use Blender as a modelling tool. I don't necessarily need to translate game engine functionality to WebGL but I would like to retain as much of the UV ...
27
votes
1answer
2k views

Physical iridescence in Cycles?

Having recently seen the Siggraph paper A Practical Extension to Microfacet Theory for the Modeling of Varying Iridescence, I of course said to myself "I have to have this in Blenderrrrr!" and started ...
26
votes
2answers
21k views

How to create a custom UI?

I was watching this video on making a custom UI tab using Python, and in the line from bpy.types import Menu, Panel, UIList, I see the names of objects that look ...
26
votes
5answers
31k views

Copy Physics To Multiple Objects

Using the cell fracture addon, I created many objects from my mesh. I want to have a rigid body physics on all of them. How would I copy one of the fractured pieces physics to all the pieces? I tired ...
26
votes
8answers
29k views

How to Combine two Normal Maps?

I made a high poly model and then baked its textures onto a low poly model. Now I want to give another normal map's details to the model. How can this be done?
26
votes
2answers
28k views

How to solidify edges

I have a complex mesh with only vertices and edges that I want to solidify. The problem is I just want to solidify edges (not any faces) to have some kind of fat wireframe model (i.e. just every ...
26
votes
4answers
13k views

What is Ambient Occlusion?

What is Ambient Occlusion and what are some of it's uses? I see it is used in creating what might be called "shadow catchers" in the following node tree setup:
26
votes
1answer
2k views

Is it possible to simulate an egg?

Is it possible to simulate an egg? Specifically, I was wondering how to handle simulating the yolk. I was thinking fluid simulation, but it seems you can't a specify different viscosity for ...
26
votes
2answers
34k views

Is it possible to apply modifiers to multiple objects at once?

You can copy modifiers from one object to other objects with CtrlL> Make links > Modifiers, or the Copy attributes addon. However, is it possible to apply modifiers to many objects at once?
26
votes
4answers
21k views

Glow with depth in Blender?

What would be a way to create a glow in Blender. For that purpose I've been always using the compositor. However, that is pixels work, which means it is a 2d work. To make a 3d one, do I have to use ...
26
votes
1answer
25k views

How to change Blender's default startup settings?

How can I change Blender from the default cube/lamp/camera default setup? Also, is it possible to change other features, such as the default view direction (Top, Side, etc) or the Editor type (3D View,...
26
votes
1answer
18k views

what can you call from the attribute node?

I know you can call density or flame for example from the attribute node. I was wondering what else you can write in the name slot. And maybe a bit of explanation of the attribute node. thanks in ...
26
votes
1answer
3k views

How to store particle locations in a list?

my question is how to store the locations of a particle or any changing data in a list so as to use the locations for effects like trails. What I intend to create are particle trails, the following ...
26
votes
3answers
14k views

Cycles: Shadeless “Shadow-catcher” Material for Rendering onto Footage

I am superimposing CGI over video footage, and have run into a problem in making materials for objects that act as 'shadow catchers'. Essentially I want a shader that is shadeless—like an emitter—but ...
26
votes
3answers
22k views

How do I scale from one side side only?

How do I scale from one side side only? I want to keep the left side of a object in place, but scale it smaller from the right. See this screen shot: I want it to end up like this: But I had to ...
26
votes
3answers
37k views

How to get selected edges length?

I have a female model and I want to know her waist width, so I select the edge loop, then use what tool? Is this only possible with python?
26
votes
3answers
10k views

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 ...
26
votes
2answers
6k views

What is the difference between Sobol and Correlated Multi-Jitter sampling patterns?

In Cycles we have two options for sampling patterns. The default is Sobol, there is also Correlated Multi-Jitter. The manual has this to say about sampling patterns: Pattern Random sampling ...
26
votes
3answers
74k views

Zoom in and out without a mouse wheel

I am using blender on a tablet, for those times when I can't plug a mouse into the tablet, I would like to still be able to zoom in and out on the viewport. What ways are there to zoom in and out ...
26
votes
4answers
3k 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 ...
26
votes
3answers
22k views

Select every other face loop

How can I select every other edge loop. In this example its not too bad to do it manually but it other cases it might be. How can I easily select alternating face loops?
26
votes
3answers
21k views

Can Blender export to the COLLADA format?

Can Blender export to the COLLADA format? I tried going to File → Export, but COLLADA was not an option. I'm using Blender 2.66.1 on Ubuntu 13.04.
26
votes
3answers
65k views

How to deselect using box select?

How do I deselect using the box select tool? I have read about middle mouse button and some other shortcuts but they don't work for me.
26
votes
2answers
6k views

Is there a way to unfold a mesh?

Is there a way to take a mesh, cut it with seams or sharp edges and flatten it, so that the faces stay the same shape and size? Making paper models is one aspect, where you could use that technique. ...
26
votes
2answers
14k views

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 ...
26
votes
3answers
5k views

Is it possible to change the emission rate of particles over time?

Is it possible to change the emission rate of particles over time? E.g. Start off with an initial burst of particles, then emit at a steady rate. Here is a (poor) example of what I mean by the ...
25
votes
3answers
13k views

What are the hotkeys to navigate the timeline?

I am looking for a way to move the timeline a specific amount, scroll, etc. even if the Timeline window is not open. Is this possible?
25
votes
2answers
34k views

How can I animate the camera in a perfect circular rotation around a fixed position?

I have an object at a fixed position in 3D space. I would like the camera to circle around it while facing it. I want to path of the camera to be circular in 2D, meaning that it does not move up or ...
25
votes
2answers
22k views

How to assign a new material to an object in the scene from Python?

How can I assign a new material to an object in the scene via Python?
25
votes
1answer
41k views

Constraint the camera to look at an object

In my scene I have a camera sitting at the origin. I would like to contraint it so that it always looks at the center of a given object. But the camera should not change its position. I found some ...
25
votes
7answers
123k views

How to make all faces flip to the right/consistent direction?

What's happening is that I have tried to flip the normals, inside and out, but there are always faces which have to be flipped! Normals recalculated Inside View If I flip them again, all faces get ...
25
votes
1answer
33k views

Planet texture generator

What cross-platform (or cross-browser) resources are available to help make texture maps for generating beautiful planetary images using Blender (Cycles)? Ideally, these would include: Terrain maps (...
25
votes
1answer
6k views

How to create piles of snow on a mesh?

For example on tree branches like this: Image from Wikimedia commons
25
votes
7answers
1k views

Tips and Tricks with using blender with one hand

Long story short, I was recently diagnosed with glioblastoma. I had surgery to remove one of the tumors and because of the surgery, I am paralyzed in my left arm. Hopefully, it's only temporary. I ...
25
votes
3answers
85k views

How to save render?

Every time I render an image and try to save it, it just disappears. How do you exactly save a render? I am using a mac.
25
votes
2answers
44k views

How do I select vertices that are directly under the other?

I'd like to select vertices that are directly beneath the one I am selecting to save me the trouble from moving out of ortho view. It's mostly on simple shapes like the cube below. Notice how the ...
25
votes
2answers
67k views

No file output after rendering?

I usually am able to render successfully to the c:\tmp folder, but when I came into work today, I rendered out the image on my work laptop, and everything seems to ...
25
votes
6answers
37k views

How to set a specific edge length numerically?

I've got this question from one of my best students. The question is the following: Suppose, that we have Edit mode with some edges, vertices, etc. How to set a selected edge to have a specific ...
25
votes
2answers
3k views

Scientific Illustration: Non-photorealistic rendering of sparse wireframe with dashed/dotted lines for backfacing areas - Blender 2.80

I'm interested in creating a material that gives this end result: I'm studying the possibility to use Blender as a tool for scientific education in pure mathematics. The idea is that the material ...
25
votes
3answers
8k views

Blurring/Feathering a Procedural Pointiness Mask

I'm trying to create a procedural mask to affect the sharp edges of my model using the Pointiness output from the Geometry node, ...

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