Math Is Fun Forum

cond( <cond> , <true_expr> , <false_expr> )

I hope this helps, let me know if it doesn't

There again posted is most of the expression terms. There isn't really any more expressions terms left that are frequently used.
I had given them to you in post #22 but I listed them again.  This is the image to show what I'm trying to achieve

You are right I've been asking Bobby if he knows of any books that could help a beginner so I could grasp the basics or a little more advanced then basics then take it from there

Hi, bobbym I understand what you mean in terms of learning.  Do you have any strong recommendations on a programming books that could help learning to understand how to write these expressions ? I have read the help documentation but I've had a hard time in how to write out the expression, so that it works.

Good Afternoon or Day Bobby

This expression worked, what you did was using the MIN command you nested a cos command with the first value for the MIN then a second cos with the second part of the function for MIN.  Why did you put (.3) & (.5) in brackets ? Lets suppose that I wanted to make a sphere have a Cos with noise how come this wouldn't work:

Cos(noise 45,23,12) ?

Here are some of the basic functions that are within this software:

+ Add
– Subtract
* Multiply
/ Divide
% Modulo (remainder)

Abs()
Absolute value

Cos()
Cosine

Fix(), Int()
Integer portion of a number

Log()
Natural logarithm

Rnd()
Random number

Sgn()
The sign of a number: –1, 0, or 1

Sin()
Sine

Sqr()
Square root

Tan()
Tangent

Fc = Current Frame
Fc = Start Frame

Now How would you go about, with a cosine curve but have the cosine curve become flat at times then go into the curve.  Imagine if you draw a constant curve, now you draw some random flat peaks that would be at zero.  Would the MIN with COS and NOISE be used to control this ? How would you write this out ?

Thank You.

Noise doesn't do anything because there is nothing driving the noise.  The expression noise(45,34,25) works but nothing is going to happen because there is nothing to drive the noise.

And now for a simple oscillation using the cosine function and the frame rate of the scene’s playback.

The expression you see above this sentence is with a variable which has been written in the expression. 

MIN( <val1> , <val2> )

noise( <x>, <y>, <z> )

This expression sets a Cosine curve based on a variable on time (T equals Time) multiplying by 90 by the variables which is
the sphere.Control.freq <multiple> by another variable which is sphere.Control.amp. 

Using this example how would you put, within this expression
this code:

and this ?

Bobbym I was going to mention this in my original thread that we talked about this You mentioned though that you should know the scale of the model in that thread but I don't know what the actual proportions of a human is to multiple it by.  Mathyperson mentioned 180 CM now if this is correct then 30 CM is right, but that is what I'd like to know what is the average height ?

5'10 for a male human ? That is the first question
Then how do you convert feet and inches to CM to figure out the scale  ?

I suppose I have to found out a average humans height Then I multiple that by 1/6 which will give me the actual scale height.

It's a 3D program.  I'm just having a hard time understanding that is unless if you were supplied some documentation you could help me ?

Oh so you would have to learn in relation to the program ? You couldn't just use any formula and it would work each program would have a specific formula to use !

Well when I'm typing an expression and I'll use something simple

Sin(Fc*5) now in relation to what I'm doing I understand what the Fc means for the software but is it specific to the software how to write a expression formula out ? Or is there a General rule that one could use most of these formulas have some ties with Javascript if that helps.