# Tag Info

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### How to: Exponential Fall Off for Volume Density?

You can use Vector maths and Maths nodes to calculate the 'altitude' above the planet and from there the atmospheric density and use this to control the density of the Volumetric Scatter. To achieve ...
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### Create procedural spiral pattern

Final result One method is to create a volumetric cylinder and distort it by rotating it around the origin by an amount that varies based on the distance from the origin. First, create a volumetric ...
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### How can I generate an object from a mathematical function?

Have used the equations found here http://www.econym.demon.co.uk/isotut/real.htm#heart1 The first can be crunched into XYZ surface. Notice the use of fabs(...) in ...
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### Sine wave using only Math nodes?

Sine Wave Producing a sine wave is easy as Sine is one of the math functions in the Blender Internal Converter --> Math node. However, a normal sine is no good as a direct factor for a mix node, ...
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### Use Latex in Blender

Here is how I would do it Wrap your expression inside a LaTeX document ...

### What does the fraction math node do?

Fract returns the fractional part of a floating-point value, as described by @Merlin, but its treatment of negative fractional parts is not actually the same as Blender's implementaion of Modulo. If ...
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### How can I create 3D surface of sine waves?

I don't think there's currently a way to add surfaces, but if you are okay with using meshes, you can use the Extra objects addon (it's not enabled by default). To enable the addon, open the User ...

### What do glossy distribution models do?

tl;dr: Always use GGX, set your roughness map to Non-color Data and square it with a math node before plugging it into the Glossy BSDF. Different microfacet distributions will have differently shaped ...
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### How can I make my procedural brick texture map correctly to both a cube and cylinder?

I think one issue with your original solution was due to lack of 'absolute' on your tests on the Normal - it's allowing for > 0.5 but not for `< -0.5'. Also, '...

### How can I generate an object from a mathematical function?

Computing a real mathematical set given implicitly by function(s) f1(x,y,z,...)=0, f2(x,y,z,...)=0, ... is really hard. Here's how I do what you want: The ...
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### HSV to RGB conversion

The RGB values in Blender use a linear color model while the Hex values use gamma corrected non-linear color model. To convert between these two, you would have to manually do the gamma calculations ...

### how are the math node operations in cycles calculated?

To supplement PGmath's answer: It is worth noting that the math is calculated a bit differently than you might think. It has to do with limitations of storing and representing floating point numbers (...

### Closing "Fibonacci's Hole"

Oh gosh, I spent ages with it. On the pictures you posted it looks particularly nice because of lines are actually spirals. If they were straight it won't look nice. On your picture pole doesn't have ...

### How do I create a 3D parametric surface using Geometry nodes?

Will this way do? It's actually the same as @LuckyOne's, and the 2D answer you refer to. Instead of starting with a curve, start with a 'UV' grid, at the desired resolutions. Map the dimensions of the ...

### Using Blender for plotting graphs?

Since asking this question, I've made a small (single script) plotting utility. This could be made into an add-on however I find it useful as-is. (Updated, tested to work in versions 3.6 .. 4.0). ...
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### Graph in blender a function of two variables,

There is an addon shipped by default with Blender called Add Mesh: Extra Objects capable of doing this. It is disabled by default and can be activated from the User Preferences dialog. Start by ...
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### Filling pentagon with quads (combinatorics)

Original answer (edit addressing the question clarification below) If you look at how the Catmull-Clark subdivision algorithm does it, you can see it creates a five-pointed star: Before: After: When ...
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### Create a plane perpendicular to the long diagonal of a cube

You can create a face-type Custom Orientation from any 3 points: Edit Mode: Select the 3 points you want the plane to be aligned to and create a Custom Orientation from them.. ensure it's being used. ...
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### Get Wave Texture to Follow Empty

You can use another empty with the track constraint and at the sphere's position, then use it in the Texture Coordinate node: Result:
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### What do glossy distribution models do?

We can take Sharp off the list right away as the entry in the manual states: Distribution: Microfacet distribution to use. Sharp results in perfectly sharp ...
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### Build color ramp out of math nodes?

Unfortunately there is no way to create a group node exactly like the Color Ramp, where you can add and remove color swatches at will. To get around this I have created a node with two movable ...

### Which of Blender's bpy.props properties can store a Matrix?

If you choose MATRIX as subtype the property will return a mathutils.Matrix object on access. So you might define a utility ...

### Recreating Mandelbulbs with math nodes

It's impossible to tell what's going wrong in your particular case as there just isn't enough information in your question - you've only partially shown the 'internal' node tree (many of the nodes are ...
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### How do I make a giant clock made of many small clocks?

Here is the simple scene that I made using animation nodes: I made 2 arrows, and duplicated it 5*8 times: Each arrow is sent to the node program, which determines the position in the space and the ...