Thomas de Groot <tho### [at] degrootorg> wrote:
> On 21-3-2016 7:18, bocovp wrote:
> > I want to render two sheets of paper (one on top of another).
> > See e.g. the following images:
> >
http://3.bp.blogspot.com/-Z_xcZG_0OpM/T6QQOa_85RI/AAAAAAAAY2Y/SfjXLhylBc8/s1600/IMG_5882.JPG
> >
https://t2.ftcdn.net/jpg/00/67/30/75/240_F_67307554_13kmP5SBUF36d3HrbcR6O0swgZcv3Hhu.jpg
> >
> > I want to get this tiny shadow which is formed by the topmost sheet on the
> > bottom one.
> > Since the distance between the sheets is VERY small, I cannot just place two
> > meshes with different z-coordinates.
> >
> > I thought of using some multilayered texture:
> > 1. bottom sheet
> > 2. some shadow layer (???)
> > 3. top sheet
> >


> >
> >
> >
>
> It seems to me that placing two meshes, slightly offset vertically, is
> the best method and not difficult to build. A challenge would be if the
> sheets were wrinkled but I guess that is not your intention. The layered
> texture approach does not seem to me a very good solution. Personally, I
> always used the first approach in the past.
>
> --
> Thomas

I will need to render dozens of such papers stacked on top of each other.
Besides, I am going to render a video file where the scene is rotating.
So, I believe, even small offset being multiplied by, say, 20 will look no so
good at some particular camera positions.

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