Pointlights about 3dgameengine HOT 14 CLOSED

Could you please specify the following:
-What, specifically, is occurring? (i.e. What pointlights are currently doing to the plane mesh)
-What, specifically, did you expect to happen instead? (i.e. What are pointlights doing to the pyramid that they aren't doing to the plane)
-A detailed step by step process to reproduce the issue

Thanks!

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• I can't see the pointlights at all on the plane while I can see them perfectly on the pyramid mesh
• I expect to see the pointlights apply their light to the plane (which they don't right now)
• When you uncomment the first vertex and int array (the pyramid mesh) and comment the second vertex and int array (the plane mesh) you'll see the pointlights, but when you comment the pyramid mesh again and uncomment the plane mesh you can't see the pointlights.

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I had the same problem.
You should try to:

1. try to calc the normals by hand

from 3dgameengine.

Well, I thought it had something to do with the normals, so I downloaded Benny's code and looked at the calculated normals (by printing it using .toString()) which matched up with my normals. I don't think it has something to do with that.

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ups..

1. it fixed it for me to turn of cull facing.

In the end this was the Problem and solution:
the calc normals method from benny adds all normals on one vertex just together. But if you do that on a plane you just end up with a 0- Vector -> no direction is up -> no light at all is reflected.

To solve this problem I implemented a check if the angle between the two normals is too big.
If it is i add a new Vertex vith ist own normal and change the index of the triangle.

I have re-written bennys method but I have not tested it jet.

Hope I could help.

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Is the Plane just dark or is it bright but not light by the pointlight?

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It's dark, but I can't see the pointlight on it.

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in wich class do you test it? i just downloaded the engine...

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and its not the source code. You uploaded the compiled files...

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How about this one? http://ikbenerik.nl/Engine2.rar
I tested it in the Mesh class.

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sorry i cannot find any mistake in your code at the moment.
I will look at it later again. :)

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Here's something that's stood out to me:
In your phong vertex shader, you're calculating the worldPosition from the vertex normal rather than the vertex position. I don't know if that's your issue, but it probably isn't what you intended to do.

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Thanks Benny, that actually fixed it!

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In that case, issue closed :)

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