[Pbrt-discuss] problem with the sphere

[Mohamed Yessine Yengui]

Hello!
I tried with three linux versions of pbrt: version 1.04 and 1.03 from pbrt
web site and version 1.03 from
https://graphics.stanford.edu/wikis/cs348b-07/PBRTInfo. I reproduce the same
problem with all these versions. But, I don’t understand what do you mean by
version 2? Sorry, I’m new user of pbrt.

Thanks

2009/10/30 Mohamed Yessine Yengui <yengui.yessine at gmail.com>


> the version is pbrt-1.03.

>

> 2009/10/30 John Danks <john.danks at gmail.com>

>

> Which version of pbrt are you using? I was not able to reproduce the

>> problem with version 2.

>>

>> On Fri, Oct 30, 2009 at 2:14 PM, Mohamed Yessine Yengui

>> <yengui.yessine at gmail.com> wrote:

>> > Hello!

>> >

>> > When I tried to render the sphere model with pbrt, I noticed that there

>> was

>> > a dark point in the resulting image, normally, this point must be

>> > illuminated. After analyzing, I perceived that the normal vector

>> computed on

>> > the sphere is not continuous. Could anyone help me to resolve this

>> problem?

>> >

>> > This is my .pbrt file and you find in attached the resulting image.  The

>> > dark point is in the red circle.

>> >

>> >

>> >

>> >  Film "image" "string filename"  ["sphere.exr"]

>> >         "integer xresolution" [500] "integer yresolution" [500]

>> >    Sampler  "bestcandidate"  "integer pixelsamples" [4]

>> >    LookAt -12 -3 12 0 0 0 0 1 0

>> >     Camera "orthographic"

>> >     WorldBegin

>> >    AttributeBegin

>> >    CoordSysTransform "camera"

>> >      LightSource "distant"  "color I" [ 3 3 3 ] "point from" [0 0 0]

>> "point

>> > to" [-1 -1 1]

>> >     AttributeEnd

>> >     AttributeBegin

>> >      Material "plastic" "color Kd" [1.0 1.0 1.0] "color Ks" [8 8 8]

>> "float

>> > roughness" [.006]

>> >     Shape "sphere" "float radius" [.3]

>> >      AttributeEnd

>> >     WorldEnd

>> >

>> > Thanks

>> > _______________________________________________

>> > pbrt-discuss mailing list

>> > pbrt-discuss at pbrt.org

>> > http://six.pairlist.net/mailman/listinfo/pbrt-discuss

>> >

>> >

>> _______________________________________________

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>>

>

>

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