Tutorials

Calling functions by pressing buttons in Blender custom UI

Nikita

The button click is basically connected with the operator calling in the Blender user interface. However, some times actions, that need to be performed when a button is pressed, are quite simple and do not require a separate operator for them. And it makes no sense to fill a registered operators stack with a multitude of specific operators designed to perform one highly specialized function. It would be much more convenient to associate a button press with a separate function call but the Blender API allows to associate buttons only with an operator call.

To solve the problem of creating a separate operator for each button we can use the fact that the operator can be called with the input parameters.

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Solving the problem of the discrepancy between the size of the track section and the profile applied to it

Nikita

By Andrew M.

“Many letters about the simple”

I need a frame. No, two frames: one larger, the other smaller, but made from one profile. I drew a rectangle, set the desired dimensions, duplicated, set other sizes. I drew a separate profile. For a section to both rectangles I applied this profile. … why did I get different frames? And none matches the size of the profile? Ah, I forgot to apply the scale. Applied. The dimensions of the cross-section changed, became different, but again not equal to the profile. How to make them equal – read below!

Solving the problem of the discrepancy between the size of the track section and the profile applied to it

This problem occurs when the path for profiling is constructed in any way but then scaled to the desired size. In this case, it does not matter if its scale is 1 or not. If we apply the profile we need to it, then it will be different in size from the set … Why? We will see now.

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Fluid simulation in Blender 2.80

Nikita

By Pavel_Blend

What is this article about?

In this article, I will talk about the fluid simulator in Blender 2.80. This simulator was first added to the blender at the end of 2005, in version 2.40. Since then, it has not changed significantly (the changes were mainly in the beginning, after the introduction of the blender). The simulator code was written by a third-party developer Nils Thuerey. He wrote a fluid simulation library and named it El’Beem. The engine is voxel-based on the method of lattice Boltzmann equations. It is best suited for creating water, but it has the ability to create viscous liquids (honey, chocolate …) that are not very well implemented. Soon, a new Mantaflow simulator will be introduced into the blender (by the way, Nils Thuerey is taking part in its development).

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