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How do I get geo points into cops without rendering?

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I have a square grid (512x512) of points with color attributes and I would like to turn them into a 512x512 pixel picture by transfering the data from the sop level into a COP. 

I am banging my head against the wall, because the data transfer does not seem to work properly. I am using a vopcop to try to get the point attribute values.

 

- I want to do it this way, because I hope to maintain a certain level of interactivty by not rendering... After all, it seems like such a simple thing to do. All I would have to do (theoretically), would be to read each point color value and assign it to a pixel.

 

- I suspect my math is flawed somewhere. Or my Houdini has a bug. Or Houdini just cannot compute for whatever reason...

 

Maybe someone can figure it out?

 

Thank you in advance!

geoToCopExperiment.hipnc

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I have a square grid (512x512) of points with color attributes and I would like to turn them into a 512x512 pixel picture by transfering the data from the sop level into a COP. 

I am banging my head against the wall, because the data transfer does not seem to work properly. I am using a vopcop to try to get the point attribute values.

 

- I want to do it this way, because I hope to maintain a certain level of interactivty by not rendering... After all, it seems like such a simple thing to do. All I would have to do (theoretically), would be to read each point color value and assign it to a pixel.

 

- I suspect my math is flawed somewhere. Or my Houdini has a bug. Or Houdini just cannot compute for whatever reason...

 

Maybe someone can figure it out?

 

Thank you in advance!

If you create point UVs on your grid, you can read the points in as a point cloud using the uv as the position channel.

geoToCopExperiment.hipnc

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Or you can use "render" cop to fetch mantra output without rendering to disk .

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