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Fluidity issues in simple Color Shifter patch

January 11, 2010 | 6:00 pm

Hello,

I’m a relatively long time Max/MSP user but have only recently begun working with Jitter.

I am having issues with a seemingly simple patch. The effect I want to achieve is a continuous shift through the color spectrum, from red to orange to yellow to green, etc.. and back to red. I want to play this on a fullscreen mode and/or record this to a movie.

I implemented the following patch based on the helps/tutorials. It works but there is some "jumpiness" to it at certain moments, that also translates into the movie if I record it. I have tried to detail & comment the patch to make it easier to diagnose – you can change the rate of rotation through the colors and this jumpiness seems to occur at any/all rates.

Any ideas on how to make this color shifter work more fluidly would be well appreciated.

Running Max 5.0.8
OS X 10.6.2
Quad Core Intel Xeon

– Pasted Max Patch, click to expand. –

January 12, 2010 | 5:45 pm

hey terence

off the top of my head you could do this with some basic Jitter effects on the video stream:

•trying [jit.slide] with low up/down setting
•or if you are feeling a little more fancy dig out the gaussian blur from Andrew Benson’s video processing patch tutorials.

these should smooth the jumpy changes that happen when rendering the values in [jit.lcd] – I’m not noticing jumpiness on the longer timescale settings in yr patch.

let me know if there get you somewhere…

bg


January 15, 2010 | 1:11 am

also have a look at the jit.gl.render erase_color, it will be light on cpu then lcd

– Pasted Max Patch, click to expand. –

January 15, 2010 | 1:17 am

Hi Billy, strimbob,

Thank you very much for your suggestions. I will let you know how they worked out as soon as i get a chance to test them out.

Terence


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