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Topics - Uwe Siems

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Support / Object3D.setTransparency range?
« on: August 17, 2011, 08:25:51 pm »
What is the expected value range for Object3D.setTransparency?
I'm experiencing that objects are completely opaque at value 5 and reasonable transparent at 0. I would have expected that they are opaque at 255 and invisible at 0.

And it seems that the additional color set with setAdditionalColor is multiplied with the base color instead of added to it, so an object with a black texture will still be black, regardless of the additional color, and an object with a green texture and an additional red color will stay green. Is this intentional?


Support / 3ds model with flat surfaces?
« on: August 10, 2011, 09:14:20 pm »
I'm currently using a simple textured cube exported from Blender (2.58a) to 3ds to render a sample scene. But when two cubes are rendered side by side there is a clear light intensity step between them, probably because each vertex has only one normal vector that is shared between the faces. So the cube is lighted more like a sphere than a cube. I already have split the cube in Blender to not share the vertices between faces, but the appearance stays the same. Only if I separate the edges a little bit the faces look shaded correctly, but of course I don't want the gaps.

I assume that the vertex sharing of jPCT gets in the way here. Is there a way around this? I also read in the description of the 3ds format that faces can belong to "smoothing groups". I assume that faces not sharing any smoothing group should have a sharp edge between them. Does jPCT support this feature? (But I don't even know if the export filter of Blender uses this feature.)


Bugs / Interact2D.reproject2D3DWS returns wrong result...
« on: August 10, 2011, 08:44:58 pm »
...if Camera.setDirection was called with non-orthogonal vectors. This obviously is corrected for the camera view, but not for the result of Interact2D.reproject2D3DWS.
It's easy to avoid for me, but at first I wondered what was wrong.


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