The Truck: Container (ATT Jun 10, 2021)
There are certainly some questions. Please ask!
the discussion about the truck question starts here:
Charles asked a question during the Ask The Trainer session:
As I have experienced it many times, information comes in steps, and each iteration leads to new ideas.
Typically, we start with how we understand a specific question and then get feedback and refine it. I think we all work in this way. Besides that, we all have our preferred way to do things. There is often no right or wrong way, and it depends on many parts of the whole situation.
So, my personal way is based on the idea of control and the ease of communicating about it. What use has the most sophisticated solution when you need too long to explain it? When we have three or four solutions, we feel comfortable using what fits best to us as artists. Which is never a judgment from where I look at it. We just fill our creative library. The larger this library gets, the more we can work towards our visions as artists. So, please stay open to the great brainstorming that happens during the Ask The Trainer events.
Here is the version that I would do when the animation would land on my desk. I tried to keep the rig small and easy to adjust. You can see in frames 99 and 100 that I swap the Container. Which simplified the whole thing.
We create in Cinema 4D for a rendering, and this visual result is all I’m after. So, how we do this magic should always follow our very own ideas.
One null moves the object, while another (in the hierarchy) supports its orientation. This is the simplest form I can think of for now. I will go below in more detail about the main problem that this question contained.
Here is my take on it:
From my perspective, the core problem boils down to the problem of two “edges” of an object that needs to stay in contact with the context. Move the Container up the slide while keeping one edge on the floor.
A classic case is the connection rod between the piston and the crankshaft.
Here, it is solvable with simple Pythagoras (or trigonometry…) since the crankshaft and piston are limited in movement (either rotation or up/down).
For a container with a moveable slide, that would require more math, and it becomes something where we lose 99.9% of our audience.
The example below is a first step, and kind of easy, given the complexity of the otherwise simple-looking setup.
Example 1 with screen capture
Example 2 for curved slides.
I hope that supports future solutions.
Enjoy your weekend, stay safe, and thanks for watching Ask The Trainer.