This is my personal thoughts, opinions and musings place. I will also rant about things, especially politically-correct things that irritate me. And sci-fi. Did I mention sci-fi? There'll be lots of sci-fi stuff here. And movies, too. Mmmmm... Movies

Monday, March 07, 2005

Reality and the world of 3D - Part 09

Reality - Continued 8

Congratulations! You are now able to describe how various objects in the world around you work, how they look, what they do, and even how they affect other objects around them. You know that objects have certain properties, such as color and transparency, and that they can do things like move in and out of other objects.

You've also learned about water, other fluids and light, and how each affects the others. Now let's talk about how it all hangs together. So far, we have looked at simple objects, such as desks. These objects can only perform very few actions. Let's now look at a more complex object, such as a car.

Ah, the car. Most of us love our cars, and I hope that love affair will never end. But have we really thought about them, in terms of form and function? Most people are content to get in their car, start the engine and drive. But let's look at the car.

A car, at its most basic, has a certain shape, it has four wheels, and it has see-through windows, or at least, if you're a pimp, it has distinct windows that may not let a lot of light through; the windshield is generally relatively transparent. The car may have a visible antenae, though many newer cars do not have those. When you see a construct made of metal, glass and rubber hurtling down the highway, you know it is a car. Through its shape, you may recognize different kinds of cars, but the fact that they are cars remains constant. The same is true of trucks; they may look different from cars and from each other, but the shape and size tells you what it is, a car or a truck.

OK, now let's look at what a car does. It has at least two doors, often four. These open and close, but only up to a certain angle. The door handles move. Side windows are mounted on doors, and move up and down; they also move with their doors, when those doors are opened or closed. Windshield and rear windows do not move. Wiper blades are attached to wiper arms and move together with the arms. The hood covering the front compartment, and the trunk covering the rear compartment, open and close by tiping up and down. Wheels spin around their centers and turn left and right, but only to certain degrees. If the car has an external antenae, it will wave and vibrate in the wind.

Now, how do you know the engine is running without raising the hood? It makes a sound generally recognizable as a running engine. When you turn the key in the ignition, it sends an electrical impulse to the starter motor which turns over the engine and it starts. If you see a car moving on the highway and you can see no one inside it, it will look very unnatural to you, unless it is sitting on a car transporter truck. If you see it moving down the highway and there's someone in it, but you don't see the wheels spin, it also will look very unnatural to you.

Think about other complex objects and try to come up with a list of actions those objects can perform and what will make it look natural or unnatural.

What is the point of this exercise, you may wonder. Stay tuned and you will find out...


At Mon Mar 07, 06:59:00 PM AST, Anonymous Anonymous said...

You know, you have waaaay to much time on your hands, find a companion, a pet, something.

At Mon Mar 07, 07:14:00 PM AST, Blogger The Mad Perseid said...

So what? What are you, a communist, to dictate to me what I do with my own time?


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