Increasing the size of points in a point cloud

Beginners
1

I’m new to touchdesigner, so I’m undoubtedly missing or not understanding something.

I’ve created a point cloud around a sphere and I’m trying to work out how to increase the size of the points beyond what seems to be a default maximum. I’ve added a math and multiply op and by changing the value of the multiplier I can vary the point size from 0 to what I presume is 1 (?) but I can’t get them any bigger, no matter what value I set the multiplier to.

I’d be grateful if someone could point me in the right direction for how to increase point size beyond this limit (eg. does this need to be done in compositing?).

Main network:

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image1023×440 55.7 KB

Inside geo_instancing:

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image1163×522 53.2 KB

fireballs_json.40.toe (79.4 KB)

2

Greg at TouchDesigner support provided the following answer (thanks Greg!):

The reason nothing changed size is your Constant TOP that is white is 8-bit flxed point, which has a maximum of 1. You multiply in a Math TOP by 7.8 but it will clamp at 1. Needs to be floating point pixel values. See TOPs’ Common page.

You multiply the xyz size of each point by its xyz position value, which I don’t think you would want.

You can adjust the point sizes in the Line MAT’s Width parameters, which may be all you need.