Heres my experiment with Radiosity.  I've been trying to make the LEDs
brighter so that they give off more light but I must be missing a trick 'cos
as I try to brighten them ( by upping the ambient) they start getting
artifacts or artificial shadows on the lit up LEDs.  The source is below and
an image attached.  If you can give me a pointer on how to get brighter
reflection of the LEDs on the tabletop i would appreciate it.  The code for
the LED is in the LED Macro.

BTW if anyone has any ideas on how to represent an "M" in a 3x5 grid,
suggestions welcome.

#include "colors.inc"
#include "textures.inc"
#include "shapes.inc"
#include "stones.inc"
#include "metals.inc"

global_settings {
  radiosity {
    pretrace_start 0.08           // start pretrace at this size
    pretrace_end   0.04           // end pretrace at this size
    count 35                      // higher -> higher quality (1..1600) [35]
    nearest_count 5               // higher -> higher quality (1..10) [5]
    error_bound 1.8               // higher -> smoother, less accurate [1.8]
    recursion_limit 10             // how much interreflections are
calculated (1..5+) [3]
    low_error_factor .5           // reduce error_bound during last pretrace
step
    gray_threshold 0.0            // increase for weakening colors (0..1)
[0]
    minimum_reuse 0.015           // reuse of old radiosity samples [0.015]
    brightness 5                 // brightness of radiosity effects (0..1)
[1]

    adc_bailout 0.01/2
    normal on                   // take surface normals into account [off]
    media on                    // take media into account [off]
    //save_file "file_name"       // save radiosity data
    //load_file "file_name"       // load saved radiosity data
    //always_sample off           // turn sampling in final trace off [on]
    //max_sample 1.0              // maximum brightness of samples
  }
}



#declare SnakeWood =
texture {  /* Bottom wood-grain layer */
    pigment {
        wood
        turbulence 0.05
        color_map {
            [0.00 rgb <0.58, 0.45, 0.23>]
            [0.34 rgb <0.65, 0.45, 0.25>]
            [0.40 rgb <0.33, 0.23, 0.13>]
            [0.47 rgb <0.60, 0.40, 0.20>]
            [1.00 rgb <0.25, 0.15, 0.05>]
        }
    }
    finish {
        crand 0.02
        //ambient 0.32
        diffuse 0.63
        phong 0.2
        phong_size 10
    }
    normal { bumps 0.05 }
}
texture {     /* top layer, adds small dark spots */
    pigment {
        bozo
        color_map {
            [0.0 rgbt <1.00, 1.00, 1.00, 1.00>]
            [0.8 rgbt <1.00, 0.90, 0.80, 0.80>]
            [1.0 rgbt <0.30, 0.20, 0.10, 0.40>]
        }
    scale 0.25
    }
}



#macro LED(TurnedOn)
merge   {
        cylinder        {
                        <0,0,0>,
                        <0,.3,0>,
                        1
                        }
        cylinder        {
                        <0,0,0>,
                        <0,1.5,0>,
                        0.9
                        }
        sphere          {
                        <0,1.5,0>,
                        0.9
                        }
        texture {
                pigment {
                        Red*0.7
                        }

                finish  {
                        reflection { 0.1,0.7 }
                        specular 0.5
                        #if(TurnedOn=1)
                        ambient 1
                        #else
                        ambient 0
                        #end
                        diffuse 1
                        }
                }

        }
#end

#macro getLEDRow(theValue)
        #if(theValue = 0)
        union   {
                object { LED(0) }
                object { LED(0) translate <2.1,0,0>}
                object { LED(0) translate <4.2,0,0>}
                }
        #end
        #if(theValue = 1)
        union   {
                object { LED(1) }
                object { LED(0) translate <2.1,0,0>}
                object { LED(0) translate <4.2,0,0>}
                }
        #end
        #if(theValue = 2)
        union   {
                object { LED(0) }
                object { LED(1) translate <2.1,0,0>}
                object { LED(0) translate <4.2,0,0>}
                }
        #end
        #if(theValue = 3)
        union   {
                object { LED(1) }
                object { LED(1) translate <2.1,0,0>}
                object { LED(0) translate <4.2,0,0>}
                }
        #end
        #if(theValue = 4)
        union   {
                object { LED(0) }
                object { LED(0) translate <2.1,0,0>}
                object { LED(1) translate <4.2,0,0>}
                }
        #end
        #if(theValue = 5)
        union   {
                object { LED(1) }
                object { LED(0) translate <2.1,0,0>}
                object { LED(1) translate <4.2,0,0>}
                }
        #end
        #if(theValue = 6)
        union   {
                object { LED(0) }
                object { LED(1) translate <2.1,0,0>}
                object { LED(1) translate <4.2,0,0>}
                }
        #end
        #if(theValue = 7)
        union   {
                object { LED(1) }
                object { LED(1) translate <2.1,0,0>}
                object { LED(1) translate <4.2,0,0>}
                }
        #end
#end

#macro getLEDLetter(theLetter)
        union   {
        #if(theLetter = 0)
                object { getLEDRow(0) }
                object { getLEDRow(0) translate <0,0,-2.1>}
                object { getLEDRow(0) translate <0,0,-4.2>}
                object { getLEDRow(0) translate <0,0,-6.3>}
                object { getLEDRow(0) translate <0,0,-8.4>}
        #end
        #if(theLetter = 1)
                object { getLEDRow(2) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(7) translate <0,0,-4.2>}
                object { getLEDRow(5) translate <0,0,-6.3>}
                object { getLEDRow(5) translate <0,0,-8.4>}
        #end
        #if(theLetter = 4)
                object { getLEDRow(3) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(5) translate <0,0,-4.2>}
                object { getLEDRow(5) translate <0,0,-6.3>}
                object { getLEDRow(3) translate <0,0,-8.4>}
        #end
        #if(theLetter = 5)
                object { getLEDRow(7) }
                object { getLEDRow(1) translate <0,0,-2.1>}
                object { getLEDRow(3) translate <0,0,-4.2>}
                object { getLEDRow(1) translate <0,0,-6.3>}
                object { getLEDRow(7) translate <0,0,-8.4>}
        #end
        #if(theLetter = 6)
                object { getLEDRow(7) }
                object { getLEDRow(1) translate <0,0,-2.1>}
                object { getLEDRow(3) translate <0,0,-4.2>}
                object { getLEDRow(1) translate <0,0,-6.3>}
                object { getLEDRow(1) translate <0,0,-8.4>}
        #end
        #if(theLetter = 8)
                object { getLEDRow(5) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(7) translate <0,0,-4.2>}
                object { getLEDRow(5) translate <0,0,-6.3>}
                object { getLEDRow(5) translate <0,0,-8.4>}
        #end
        #if(theLetter = 12)
                object { getLEDRow(1) }
                object { getLEDRow(1) translate <0,0,-2.1>}
                object { getLEDRow(1) translate <0,0,-4.2>}
                object { getLEDRow(1) translate <0,0,-6.3>}
                object { getLEDRow(7) translate <0,0,-8.4>}
        #end
        #if(theLetter = 14)
                object { getLEDRow(7) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(5) translate <0,0,-4.2>}
                object { getLEDRow(5) translate <0,0,-6.3>}
                object { getLEDRow(5) translate <0,0,-8.4>}
        #end
        #if(theLetter = 15)
                object { getLEDRow(7) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(5) translate <0,0,-4.2>}
                object { getLEDRow(5) translate <0,0,-6.3>}
                object { getLEDRow(7) translate <0,0,-8.4>}
        #end
        #if(theLetter = 16)
                object { getLEDRow(7) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(7) translate <0,0,-4.2>}
                object { getLEDRow(1) translate <0,0,-6.3>}
                object { getLEDRow(1) translate <0,0,-8.4>}
        #end
        #if(theLetter = 18)
                object { getLEDRow(7) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(7) translate <0,0,-4.2>}
                object { getLEDRow(3) translate <0,0,-6.3>}
                object { getLEDRow(5) translate <0,0,-8.4>}
        #end
        #if(theLetter = 19)
                object { getLEDRow(7) }
                object { getLEDRow(1) translate <0,0,-2.1>}
                object { getLEDRow(7) translate <0,0,-4.2>}
                object { getLEDRow(4) translate <0,0,-6.3>}
                object { getLEDRow(7) translate <0,0,-8.4>}
        #end
        #if(theLetter = 20)
                object { getLEDRow(7) }
                object { getLEDRow(2) translate <0,0,-2.1>}
                object { getLEDRow(2) translate <0,0,-4.2>}
                object { getLEDRow(2) translate <0,0,-6.3>}
                object { getLEDRow(2) translate <0,0,-8.4>}
        #end
        #if(theLetter = 21)
                object { getLEDRow(5) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(5) translate <0,0,-4.2>}
                object { getLEDRow(5) translate <0,0,-6.3>}
                object { getLEDRow(7) translate <0,0,-8.4>}
        #end
        #if(theLetter = 22)
                object { getLEDRow(5) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(5) translate <0,0,-4.2>}
                object { getLEDRow(5) translate <0,0,-6.3>}
                object { getLEDRow(2) translate <0,0,-8.4>}
        #end
        #if(theLetter = 25)
                object { getLEDRow(5) }
                object { getLEDRow(5) translate <0,0,-2.1>}
                object { getLEDRow(2) translate <0,0,-4.2>}
                object { getLEDRow(2) translate <0,0,-6.3>}
                object { getLEDRow(2) translate <0,0,-8.4>}
        #end
        #if(theLetter = 27)
                object { getLEDRow(0) }
                object { getLEDRow(0) translate <0,0,-2.1>}
                object { getLEDRow(7) translate <0,0,-4.2>}
                object { getLEDRow(0) translate <0,0,-6.3>}
                object { getLEDRow(0) translate <0,0,-8.4>}
        #end
                }
#end

#macro getLEDStream(one, two, three, four, five, six, seven,eight)
union   {
        object  { getLEDLetter(one) }
        object  { getLEDLetter(two)  translate <8,0,0>}
        object  { getLEDLetter(three) translate <16,0,0>}
        object  { getLEDLetter(four)  translate <24,0,0>}
        object  { getLEDLetter(five) translate <32,0,0>}
        object  { getLEDLetter(six) translate <40,0,0>}
        object  { getLEDLetter(seven) translate <48,0,0>}
        object  { getLEDLetter(eight) translate <56,0,0>}
        }
#end



#macro LEDBox() union {
        difference      {
                object  {
                        Round_Box(<-35,5,3>, < 35, 0, -13>, 1, no)
                        texture {
                                pigment {
                                        Black
                                        }
                                finish  {
                                        ambient 0
                                        specular 0.5
                                        roughness .002
                                        reflection { 0.1,.5 }
                                        diffuse 0.8
                                        }
                                normal  {
                                        bumps .3
                                        scale 0.1
                                        }
                                }
                        }
                box     {
                        <-32.99999,6,.99999>,
                        <32.99999,0.99,-10.99999>
                        texture { T_Chrome_3B //1A
                                finish  {
                                        ambient 0
                                        diffuse 0.8
                                        }
                                }
                        }
                }
        box     {
        <-33,5,1>,
        <33,4.5,-11>
        texture {
                pigment {
                        Clear
                        }
                finish  {
                        reflection { 0.1,1 }
                        specular 0.5
                        diffuse 0.1
                        ambient 0
                        }
                }
        hollow
        interior        {
                        ior 1.5
                        }
        }

        object { getLEDStream(16,15,22,27,18,1,25,0)  translate
<-30,1.1,-.6>}
        cylinder        {
                        <-35,2.5,0>,
                        <-35.3,2.5,0>
                        1.5
                        texture {
                                pigment { Black }
                                finish  {
                                        reflection { 0,.7 }
                                        specular 0.7
                                        diffuse 0.1
                                        ambient 0
                                        }
                                }
                        }
        sphere_sweep    {
                        cubic_spline
                        5,
                        <-32,2.5,0>,0.8,
                        <-35,2.5,0>,0.8,
                        <-50,2.5,0>,0.8,
                        <-75,-12.5,0>,0.8
                        <-95,-18.5,0>,0.8
                        texture {
                                pigment { Black }
                                finish  {
                                        reflection { 0.1,1 }
                                        specular 0.1
                                        diffuse 0.6
                                        ambient 0
                                        }
                                }
                        }
}
#end

/*
plane   { <0, 1, 0>, -0.0001
        texture { SnakeWood
                finish  {
                        reflection {0.1,0.3}
                        specular 0.5
                        ambient 0
                        }
                rotate <0,34,0>
                }
        }
*/
// atmospheric media can be generated by adding a media statement
// to the scene not attached to any specific object
/*
media {    // atmospheric media sample
  intervals 10
  scattering { 1, rgb 0.03 }
  samples 1, 10
  confidence 0.9999
  variance 1/1000
  ratio 0.9
}
*/

camera  { location <-30,75,-35> look_at <-5,5,0> }
background { color Black }
object { LEDBox() }
object  { Round_Box(<-42,0,-17>,<100,-5,1000>,0.2,no)
        texture {
                SnakeWood scale 1
                finish  {
                        ambient 0
                        }
                rotate <0,5,0>
                }
        texture {
                pigment { color rgbf< 0.7, 0.8, 0.98,1> }
                finish  {
                        reflection {0.1,0.2}
                        specular 0.5
                        ambient 0
                        diffuse 0.7
                        }
                }
        }

light_source {
        <40,70,-50>
colour White
        spotlight point_at <-55,0,0>
                tightness 50
                radius 7
                falloff 10
                photons {
                        reflection on
                        refraction on
                        }

 }

//cylinder { <40,70,-50>,<-55,0,0>,1 texture { pigment { Red } } }
 //light_source { <0, 20, -50> color rgb <0.2, 0.25, 0.3> shadowless }



//light_source { <-70, 40, -10> color White photons { refraction on
reflection on } }
//light_source { <-70, 20, 0> color White photons { refraction on reflection
on } }
//light_source { <-35,14,3> color White photons { refraction on reflection
on } }

Post a reply to this message

Attachments:
Download 'LEDPanel2.jpg' (49 KB)

Preview of image 'LEDPanel2.jpg'

for example : Letter 'O' :

00111100
01000010
01000010
01000010
01000010
00111100

But I don't really know (yet) how to use arrays... So it's just a
suggestion....

Post a reply to this message

I did consider that, but I havn't used arrays yet either!


"LightBeam" <s.f### [at] tiscalifr> wrote in message
news:4044ad0c$1@news.povray.org...

> for example : Letter 'O' :
>
> 00111100
> 01000010
> 01000010
> 01000010
> 01000010
> 00111100
>
> But I don't really know (yet) how to use arrays... So it's just a
> suggestion....
>
>

Post a reply to this message

M might be done like this:

o x o
o o o
o x o
o x o
o x o

bye,
	Marc

Post a reply to this message

Thanks but I've been there and my co-workers ripped the *iss out of me for
it.

I really think I should have done a 5x8 grid. The word to describe me, i
think, is PLONKER!


"Marc Roth" <mar### [at] rothconsultcom> wrote in message
news:4044bbf5$1@news.povray.org...
> M might be done like this:
>
> o x o
> o o o
> o x o
> o x o
> o x o
>
> bye,
> Marc

Post a reply to this message

Cool, this has a lot of potential.  Why not fill the panel with a solid grid
of LEDs.  Then you could animate it by having the text scroll by.  :)

Post a reply to this message