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I created a structure from bicubic patches. I noticed that if I use a shiny
finish the reflected image is not smooth over the edges of the bicubic
patches. With a normal (red) pigment the object seems smooth, so there is no
reason why the reflection of a shiny surface should be broken.
I created the object manually, but I understand the nature of bicubic
patches and I am 99.9999% certain that the individual patches line up
smoothly.
I created the picture with the following code fragment. If needed I can
upload the complete code for "my_object" but for the sake of (starting) this
topic it may be confusing (its a list of patches with an even longer list of
3D coordinates).
object {
my_object
texture { Aluminum }
// pigment { colour Red }
rotate <0, 0, 90>
translate <1, 0, 0>
}
object {
my_object
// texture { Aluminum }
pigment { colour Red }
rotate <0, 0, 90>
translate <0, -1, 0>
}
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![object_view.jpg](/povray.binaries.images/attachment/%3C3d7e4ddb%40news.povray.org%3E/object_view.jpg?ttop=443840&toff=8750&preview=1)
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On Tue, 10 Sep 2002 21:53:44 +0200, "jansb000" <jan### [at] planet nl> wrote:
> I created the picture with the following code fragment. If needed I can
> upload the complete code for "my_object" but for the sake of (starting) this
> topic it may be confusing (its a list of patches with an even longer list of
> 3D coordinates).
I think uploading zipped complete scene in apropriate binary group not hurts
:-)
ABX
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These graphics show how I defined the control points. In my opinion, the
resulting object should be nice smooth surface. However, ther is a clear
line between the bicubic-patches.
This message belongs to scene file:
"Possible bug in shiny bicubic-patch (11kb)" in povray.binaries.scene-files
and "Re: Possible bug in shiny bicubic_patch" in povray.general
.
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Preview of image 'w001.png'
![w001.png](/povray.binaries.images/attachment/%3C3d83002e%40news.povray.org%3E/w001.png?ttop=443840&toff=8750&preview=1)
Preview of image 'w002.png'
![w002.png](/povray.binaries.images/attachment/%3C3d83002e%40news.povray.org%3E/w002.png?ttop=443840&toff=8750&preview=1)
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