setLightParameters doesn't work as in documentation

[ask4jubad]

I would like to change the diffuse and specular components of one of the default lights in my simulation using the following:

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sim.setLightParameters(lightHandleA, 1, None, [difA1, difA2, difA3], [0,0,0])

but it returns the following error:

Exception: b"42: Incorrect table size. (in function 'sim.setLightParameters')"

Mind you, difA1 - difA3 are all float numbers between 0 and 1.

In specific terms, how can I get this done?

Please support with this.

[coppelia]

Hello,

you are right. The Python version needs a bit different handling. Try by replacing None with [0,0,0].

Cheers

[ask4jubad]

Thanks Coppelia.

Can you tell me about how to do the handling in python then please? I mean to be able to change the diffuse and specular components across the range and not just turn on/of the light.

Thanks

[coppelia]

What about:

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    sim.setLightParameters(lightHandle,1,[0,0,0],[1,1,1],[0,0,0]) # light is white
    sim.setLightParameters(lightHandle,1,[0,0,0],[1,0,0],[0,0,0]) # light is red
    sim.setLightParameters(lightHandle,0,[0,0,0],[1,0,0],[0,0,0]) # light is off
    etc.

cheers

[ask4jubad]

Thanks it worked.

I think updating the documentation a bit would save a lot of time.

I see that it is currently written as:
Python synopsis

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sim.setLightParameters(int objectHandle,int state,None,list diffusePart,list specularPart)

The setToNULL parameter does not work with None (at least for me and I have reproduced this three times) rather [0, 0, 0] worked.

My recommendation is to update it thus:

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sim.setLightParameters(int objectHandle,int state,[0,0,0],list(3)diffusePart,list(3)specularPart)

The clarity will be helpful.