Join Ran Ben Avraham for an in-depth discussion in this video Setting up the correct world scale, part of RealFlow: Soft Body Simulation for Motion Graphics.
- Now that we are aware of the importance of RealFlow's world scale, let's examine the ways we have to change that world scale. The first option is changing it from the Preferences window. We'll go to File, Preferences, and in the General tab in the Scale section, we have four different parameters: Geometry scale, Cell size scale, Daemon force scale for fluids and for objects.
All of these are set to one, i.e. one meter. The one we are interested in is the Geometry scale. The Cell size scale refers to Hybrido liquids. And the Daemon force scale for fluids and objects are all irrelevant for us. Now, changing the Geometry scale via the Preferences window will permanently change RealFlow world scale. That means that it will affect this project and any future objects we will create.
Personally, I prefer not to do it this way, so let's hit Cancel. Our second option is to use the Scale options button down here, this button. If we'll click on it, we can see it opens up the Scale options window and here, we can see the very same parameters: the Geometry scale, Cell size scale, Daemon force scale for fluids and objects. Same parameters, but when we change the world scale from the Scale options button, we change the RealFlow world scale just for this project.
But before we do any changes here, let's close the window and once again, I'll select the Z. I would like to measure the Z a bit more accurately and to do that, I'll go to the Tools tab, which is one before last on the right. And I'll select the Measure tool. Now the Units System it's measuring in right now is metric and it tells me that the surface scale is 9.71 meters, which is huge.
Now, let's close this and let's again go to the Scale options button. And we'll set the Geometry scale to 0.1. So, one is meters and 0.1 is centimeters. We'll hit OK. And as you can see, that scaled down our objects. Let's zoom in here. Now, that didn't do any change for our measures.
The only difference we have made here is that the world scale has changed. Now the Z is still selected. Let's measure it again. And as you can see, now its Surface is equal to 10 centimeters, which is a whole lot better. Let's hit OK. It is a whole lot better because RealFlow will be able to simulate this scene a lot faster now. So remember, when changing RealFlow's world scale, we have two options.
We have the permanent option via File, Preferences, and you have the local option via the Scale options button.
Note this is a project-based learning experience, designed for members who are already familiar with RealFlow. Each step of the process is rich with lessons applicable to the variations that motion design artists will face in the real world.
- Importing geometry in RealFlow
- Setting up dynamic types and world scale
- Rearranging objects in 3D space
- Simulating soft bodies
- Speeding up and slowing down simulations
- Animating, lighting, and rendering in Maya
- Compositing in After Effects