Forums > Jitter

matrix output from or js jsglsurface.js

Jan 11 2011 | 1:33 am


I am interested in morphing between various 3D geometry objects by simply crossfading between them using jit.xfade. You can try this by changing the values in the yellow numberbox in the patch below. In this patch I am crosafading between two matrices from objects. Is it possible to output the matrix from to do the same? has a matrix output but I don’t know how to enable it? What about getting a matrix from jsglsurface.js?

Thank you!

-- Pasted Max Patch, click to expand. --

Jan 11 2011 | 6:08 am

awesome with the jit.xfade!

Feb 05 2013 | 11:13 pm

Also would be interested if "" can output matrix data!

Anybody know if it’s possible?

Feb 06 2013 | 7:11 pm

Can the render context not be a jit.matrix?

Feb 06 2013 | 8:22 pm does not support matrixoutput.

Feb 07 2013 | 3:41 am

So I am still interested in morphing between various 3D geometry objects. How would one do that in Max?

Feb 07 2013 | 11:31 am

@Rob: Thanx!
@Anthony: check out the green area of this patch and try to play with the red numbox…

-- Pasted Max Patch, click to expand. --

Feb 07 2013 | 5:23 pm

Ahhh I see, pretty cool. Originally I had envisioned using instead of Not sure if there is a way to convert the vertex data of the model into some thing "morphable". But this is very useful!

There is one question I still have… is there any way I can convert the output of this new shape morpher to a matrix. I want to be able to send the video out a syphon connection to an external application.

Feb 07 2013 | 5:35 pm

didn’t try but what’s the problem setting "@matrixoutput 1" with the object? i guess it will send out it’s matrix like gridshape…. isn’t it?

Feb 07 2013 | 7:12 pm

Hey folks, for some reason I am getting some strange results form the last patch that was posted. It looks like the color of the mesh lines are getting messed up. The color also seem to change when I go from fullscreen to mini window. I have attached a screenshot. I have also confirmed that the same result happens when I paste the original patch. Any ideas?


  1. ScreenShot20130207at12.59.18PM.png


Feb 07 2013 | 8:37 pm does support matrixoutput, but it outputs triangle vertices, unlike which outputs tri_grid vertices.
so you can’t mix the two, and if you want to draw with, you must set the @draw_mode to triangles.

this has been posted about many times in the forum, and a search will reveal many patches and info.

no idea what the color problems you’re seeing are about. if you can post a patch and steps to reproduce, and relevant system info, i can take a look.

Feb 07 2013 | 8:38 pm

if you want to send to syphon, use a to capture the output to a texture.

Feb 07 2013 | 9:02 pm

Here is the patch that is exhibiting the issue, it really should not be any different than the one that was previously posted. I changed the formatting a bit. I get the same result if I use the original pasted patch.

-- Pasted Max Patch, click to expand. --

Feb 08 2013 | 11:13 am

Anthony: Sorry, i can’t get that color problem you say… even with the patch you’ve posted all seems ok for me…

Feb 08 2013 | 2:51 pm

Hmmm that is odd. Maybe it is a graphics chipset issue. I am running OSX 10.7 on a MBP (late 2011), Max 6.08

Chipset Model: AMD Radeon HD 6770M
Type: GPU
Bus: PCIe
PCIe Lane Width: x8
VRAM (Total): 1024 MB

Feb 08 2013 | 8:17 pm

It appears that the problem as something to do with render mode.

The original line was… Kevin @lighting_enable 1 @scale 4. 4. 4. @poly_mode 1 2
which specifies line and point rendering.

This seems to fix things… Kevin @lighting_enable 1 @scale 4. 4. 4. @poly_mode 1 1

I also had to change the gl renderer erase color to something other than black.

Feb 12 2013 | 5:20 pm

" does support matrixoutput, but it outputs triangle vertices, unlike which outputs tri_grid vertices.
so you can’t mix the two"

Is there an easy way I can convert triangle vertices to tri_grid vertices?

Feb 13 2013 | 2:52 pm


Feb 13 2013 | 6:11 pm

probably much easier to go the other way.
search google for "convert triangle strip to triangles" (tri_grid is actually GL_TRIANGLE_STRIP)

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Forums > Jitter