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Quote:
Originally Posted by Greg
Good example, some of it makes sense, some not as much. Mainly because I've not had time to review your LB basics.
how does the result change with +3 vs -3 freq difference? I mean it is still a |1:3| ratio. Maybe it has to do with the default freq value when not stated or declared.
lasermaster1977: The -3 is to spin one of the circles in the opposite direction, or 180 degrees out of phase.
James: The graphic shows the same shape but this time with only the Y axis amplitude modulated.
Code:math to_frame 0.5
math iterations 2000
math LBO1 phase 90.0
math lissajou
# put this in the list
math store one_circle
math duration 8.0
# from 0 to 8 * two_pi (8 loops around)
math lissajou
# put this in the list
math store eight_circles
math factor 0.0 0.3 0.0
# factor is used by scale
math scale
# put this in the list
math store y_mod
math recall eight_circles
math factor 0.3 0.0 0.0
math scale
# put this in the list
math store x_mod
math recall eight_circles
math factor 0.3 0.3 0.0
math scale
# put this in the list
math store xy_mod
math recall one_circle
math recall x_mod
math add
math render
math recall one_circle
math recall y_mod
math add
math render
math recall one_circle
math recall xy_mod
math add
math render
Attachment 57878Attachment 57879Attachment 57880
Thanks James! That is very helpful. One more and I should be off and running. This one is an oscillator with amplitude modulation and phase modulation, with the modulating signal being 3 times the fundamental.
Ha!
I thought you had me there for a minute.
But then I remembered a trick to pull out of the bag.
The "warp" operator!
Basically it uses the x y z coordinate values of the second frame_set image to rotate the vertices in the first.
So in this example, I had to use the oscillator_xyz generator to put a sin into the z axis (x and y of the first frame are rotated around the z axis). Note that the amplitude of LBO1 and LBO2 is 0.0.
Thanks for that! This is the first example of the warp operator I have written. I wrote the code purely out of theory.
And it works!
The warp operator multiplies the rotational values by pi, so a regular sin wave oscillates from -1 to +1. This translates to -pi to +pi rotation in radians (one whole rotation).
Code:math LBO1 frequency 3.0
math LBO1 phase 180.0
math LBO1 offset 1.5
math polar
math LBO1 reset
math LBO1 amplitude 0.0
math LBO2 amplitude 0.0
math LBO3 amplitude 0.25
math LBO3 frequency 3.0
# x = LBO1(t)
# y = LBO2(t)
# z = LBO3(t)
math oscillator_xyz
math warp
math render
Attachment 57882
James, I want to publicly thank you for the time you spent on the phone with me today. It cleared up a great deal for me on the LaserBoy interface and allowed me to actually create some basic frames that I can relate to from my past harmonic ratios experience. I quickly did these 1:3, 2:3 and 3:5 summation ratios in a matter of minutes.
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Attachment 57885 Attachment 57886
Attachment 57887 Attachment 57888
I look forward to getting more involved with using LB.
That can turn into a Category 3 vortex very easily.Quote:
Originally Posted by james
Attachment 57889
I've got a big smile on my face right now!
Hey, Greg!
Something else that might be of interest to you is that Liquid Math can import your data tables and load them into the registers for math just like if they were generated from the script. It can also save text tables from the script.
That is something I'd also like to know how to do it, load data tables and save text tables.Quote:
Originally Posted by james
I think it is described in directives.txt.
The "size" operator would also be useful so you can be sure your imports are the size you want them to be.