Draw live Visual system. Feedback with SOPs instead of TOPs

Beginners
1

Hey there!
I need few tips for my Visual system, can you help me guys?
I spent a lot of time in the forum to resolve the problems by my own, but now i stuck again, i still miss some python basics…

I want to draw a line of points with mous or tablet (over OSC-Touch). The points should change size, color, rotation in realtion to the time. So they live maybe 3 seconds, and when they get “old” the grow and dissapear. The newest point is always in front.
Then i instance geometry so that i can draw many pics, or animations.

Maybe its better to do all the CHOP work with DATs, but i still dont know so much about DATs.

I wrote the specific questions in the file :wink:

greetings
Draw_Line_Particles.1.toe (8.31 KB)

2

Does anyone has an idea why the SOP circle sometimes cover the other pictures though its transparent? And how to render the newest point always in the front even they are in the same plane surface?

Any ideas how to solve this project with DATs?