line

GL Line Scroll/Repeat

scalf's picture

Hello,

I am trying to get a GL line to seem to scroll across a window, continuously.

In the comp attached you can see I have made it scroll but I would like it to scroll continuously and not back and forth which approaches a pseudo-effect.

I was thinking having the line shift to the bottom rapidly after reaching the top or outside of the screen space but there must be an elegant way to do this?

Thanks

Flowing Linear Particles

londonsquared's picture

Hi, I'm having a bit of trouble working on my first quartz composition now and was wondering if anyone might be willing to give some advice or help getting going in the right direction. I've been wanting to learn quartz for a while and have taken a project for a client to push myself. Perhaps not the best plan but I am learning a lot and pleased to have discovered this site with all its wonderful work.

What I'm trying to do seems fairly simple, but I am having quite a bit of trouble with it. I am trying to make an interactive screensaver that senses movement and then triggers linear particles from several fixed positions. I would like the particle lines to flow somewhat randomly in slightly swirly or curved paths, as if they are being blown by wind.

I have managed to get the tracking part working in a basic manner building off the "Security" sample that comes with quartz composer. My trouble is with the particles. I have seen some projects that are great at manipulating them into linear strands and others manage the flow really well.

I am able to analyze them logically for the most part, but it is a really slow process for achieving this project in time. Also I think these compositions are generally more complex than what I really need at the moment. Any pointers or tips would be greatly appreciated.

Thank you.

Stock Patch Linemaker_GT (Composition by gtoledo3)

Author: gtoledo3
License: (unknown)
Date: 2010.08.14
Compatibility: 10.4, 10.5, 10.6
Categories:
Required plugins:
(none)

I'm posting this to show how to do "line structure" style drawing with all stock patches.

This has some provisions for color and thickness as well, so you can have lines of differing color and weight on screen at the same time.

jumping (Composition by gtoledo3)

Author: gtoledo3
License: (unknown)
Date: 2010.05.02
Compatibility: 10.4, 10.5, 10.6
Categories:
Required plugins:
(none)

This composition shows how to construct "jumping" lines out of sprites, textured with a gaussian gradient that appear as though they squish as they reach a given boundary, then bounce from that boundary.

There are controls that change the size, pace, interpolation, line weight, phase control, and some other parameters.

Line Spirograph (Composition by gtoledo3)

Author: gtoledo3
License: (unknown)
Date: 2010.05.02
Compatibility: 10.5, 10.6
Categories:
Required plugins:
(none)

This is a intermediate level composition that shows how to construct a Spirograph style shape by using GL Lines (GL Tools patch required), Iteration, Interpolation, and LFO's.

By using GL Lines, one has control over many interesting Stipple Patterns, and color control. This patch also has controls for Spirograph movement duration, max and minimum points for Spirograph extent, and controls to affect the way the movement of the Spirograph.

This patch will not work well in a Lighting environment due to the nature of GL Line.