Actually I want them to point up... in the original version of this scene
there are more objects that they should be shining on.  When I realized they
weren't shining on anything, I began commenting out things one by one to try
to find out what was blocking the lights.  I copied the "un-commented" code
into a new file to post.  Otherwise I'd have sent in a .pov file with
something like 500 lines commented out -- more than half.  I will try your
suggestion though, and see if it makes any difference.  If it does, then at
least it'll be a starting point.

Thanks a lot.

--Dave

Bob Hughes wrote in message <370D7E03.31BB938A@aol.com>...
>Try changing all your point_at 50*y to -50*y to direct them downward
>instead. They still behave like spotlights, that is, they point in one
>direction; not endless cylinders going in both directions. I first
>thought they did myself.
>I didn't try your script out, though I believe that is the answer.

>>
>>  [Image]
>>
>>  [Image]
>>
>> // Textures
>>
>> // I'm using a staggared radial texture for the floor.  Here's the
>> // basic texture... It will be phased later to get the circular-checkered
>> // effect.  Kind of like the floor on the stage of this year's Academy
Awards, but not exactly.
>> #declare rad =
>> pigment {
>>         radial
>>         color_map {
>>                 [0.5 color rgb 1.0]
>>                 [0.5 color rgb 0.0]
>>         }
>>         frequency 10
>> }
>>
>> // here is the texture of the rings that will surround the floor
>> // and contain the fountains, and for all the other stone in the scene as
well.
>> #declare stonetexture =
>> texture {
>>         pigment {
>>                 color rgb 0.5
>>         }
>>
>>         normal {granite 1}
>> }
>>
>> // Lights... camera... ...ray trace!
>>
>> light_source {
>>         <0, 1000, 0>
>>         color rgb 0.5//<0.17, 0.17, 0.2>
>>         media_attenuation off
>>         media_interaction off
>>         shadowless // this is always shadowless.  just to help illuminate
things while I try
>>                    // to figure out why the cylinder lights don't light
>> }
>>
>> // these are the cylindrical lights
>>
>> light_source { // #1
>>         <0, 0, 82>
>>         color rgb <2.00, 0.50, 0.50>
>>         cylinder
>>         radius 45
>>         falloff 47
>>         tightness 100
>>         point_at <0, 50, 82>
>>         rotate <0, 270, 0>
>>         media_interaction on
>>         shadowless //made this shadowless for test run
>> }
>>
>> light_source { //#2
>>         <0, 0, 82>
>>         color rgb <2.00, 1.00, 0.50>
>>         cylinder
>>         radius 45
>>         falloff 47
>>         tightness 100
>>         point_at <0, 50, 82>
>>         rotate <0, 306, 0>
>>         media_interaction on
>>         shadowless //made this shadowless for test run
>> }
>>
>> light_source { //#3
>>         <0, 0, 82>
>>         color rgb <2.00, 2.00, 0.50>
>>         cylinder
>>         radius 45
>>         falloff 47
>>         tightness 100
>>         point_at <0, 50, 82>
>>         rotate <0, 342, 0>
>>         media_interaction on
>>         shadowless //made this shadowless for test run
>> }
>>
>> light_source { //#4
>>         <0, 0, 82>
>>         color rgb <0.50, 2.00, 0.50>
>>         cylinder
>>         radius 45
>>         falloff 60
>>         tightness 100
>>         point_at <0, 50, 82>
>>         rotate <0, 18, 0>
>>         media_interaction on
>>         shadowless //made this shadowless for test run
>> }
>>
>> light_source { //#5
>>         <0, 0, 82>
>>         color rgb <0.50, 0.50, 2.00>
>>         cylinder
>>         radius 45
>>         falloff 47
>>         tightness 100
>>         point_at <0, 50, 82>
>>         rotate <0, 54, 0>
>>         media_interaction on
>>         shadowless //made this shadowless for test run
>> }
>>
>> light_source { //#6
>>         <0, 0, 82>
>>         color rgb <2.00, 0.50, 2.00>
>>         cylinder
>>         radius 45
>>         falloff 47
>>         tightness 100
>>         point_at <0, 50, 82>
>>         rotate <0, 90, 0>
>>         media_interaction on
>>         shadowless //made this shadowless for test run
>> }
>>
>> camera {
>>         location <0, 200, 0>
>>         look_at <0, 0, 0>
>> }
>>
>> // Every scene needs some objects.
>>
>> // I've never used discs before.. but layering concentric rings
>> // was the only way I could think of to get the pattern I wanted.
>> // The discs have the "rad" pattern, one half phase off from each other.
>>
>> disc { // White circle in the center
>>         <0, 0, 0>, y, 5
>>         pigment {color rgb 1}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 10, 5
>>         pigment {rad}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 15, 10
>>         pigment {rad phase 0.5}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 20, 15
>>         pigment {rad}
>> }
>>
>>
>> disc {
>>         <0, 0, 0>, y, 25, 20
>>         pigment {rad phase 0.5}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 30, 25
>>         pigment {rad}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 35, 30
>>         pigment {rad phase 0.5}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 40, 35
>>         pigment {rad}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 45, 40
>>         pigment {rad phase 0.5}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 50, 45
>>         pigment {rad}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 55, 50
>>         pigment {rad phase 0.5}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 60, 55
>>         pigment {rad}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 65, 60
>>         pigment {rad phase 0.5}
>> }
>>
>> disc {
>>         <0, 0, 0>, y, 70, 65
>>         pigment {rad}
>> }
>>
>>
>> // this large ring immediately surrounds the floor
>> difference {
>>         cylinder {
>>                 <0, -3, 0>, <0, 1, 0>, 72
>>         }
>>
>>         cylinder {
>>                 <0, -3.1, 0>, <0, 1.1, 0>, 70
>>         }
>>         texture {stonetexture}
>> }
>>
>> // this outer ring will surround the floor, and the several mini-rings
that will hold the fountains.
>> difference {
>>         cylinder {
>>                 <0, -3, 0>, <0, 1, 0>, 94
>>         }
>>
>>         cylinder {
>>                 <0, -3.1, 0>, <0, 1.1, 0>, 92
>>         }
>>         texture {stonetexture}
>> }
>>
>> // Here's the ground that will surround the floor.  I cut out the area
where
>> // the floor and rings are so you don't see grass (or this really bad
>> // aproximation of grass) in the bottom.
>> difference {
>>         plane {
>>                 y, -0.5
>>                 texture {
>>                         pigment {
>>                                 color rgb <0.25, 1.00, 0.25>
>>                         }
>>
>>                         normal {
>>                                 average
>>                                 normal_map {         // just arbitary
trial & error numbers to not
>>                                         [granite 2]  // have too smooth
of a ground
>>                                         [bumps 1]
>>                                         [dents 2]
>>                                         [crackle 1]
>>                                 }
>>                         }
>>                 }
>>                 hollow
>>         }
>>
>>         cylinder {
>>                 <0, -3.00001, 0>, <0, 1, 0>, 94
>>                 texture {
>>                         pigment {
>>                                 color rgb 0.50
>>                         }
>>
>>                         normal {
>>                                 average
>>                                 normal_map {
>>                                         [granite 2]  // more arbitrary
trial & error valuse to make
>>                                         [crackle 2]  // the inside of the
pools not be smooth
>>                                 }
>>                         }
>>                 }
>>          hollow
>>          no_shadow
>>         }
>>         hollow on
>> }
>>
>
>--
> omniVERSE: beyond the universe
>  http://members.aol.com/inversez/homepage.htm
> mailto:inv### [at] aolcom?Subject=PoV-News

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