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47377c4d@news.povray.org...
>
> Why not build your lines with some tori and make an object_pattern with
> them?
> You could keep constant width lines that way.
>
> Marc
#include "colors.inc"
#include"math.inc"
global_settings {
assumed_gamma 1.0
}
// ----------------------------------------
camera {
location <0.0, 2, -3.0>
direction 1.5*z
right x*image_width/image_height
look_at <0.0, 0.0, 0.0>
}
light_source {
<0, 0, 0> // light's position (translated below)
color rgb <1, 1, 1> // light's color
translate <-30, 30, -30>
}
// ----------------------------------------
#declare Sphere_rad=1;
#declare Line_width=0.0025;
#declare Long_number=24;
#declare Lat_number=12;
//construction of the longitude lines
#declare Line_long=torus{Sphere_rad,Line_width rotate x*90}
#declare Cnt_long=0;
#declare Long=union{
#while(Cnt_long<Long_number)
object{Line_long rotate y*360*Cnt_long/Long_number}
#declare Cnt_long=Cnt_long+1;
#end
}
//construction of the latitude lines
#declare Cnt_lat=0;
#declare Lat=union{
#while (Cnt_lat< Lat_number)
torus{Sphere_rad*cosd(90*Cnt_lat/Lat_number),Line_width translate
y*Sphere_rad*sind(90*Cnt_lat/Lat_number)}
#declare Cnt_lat=Cnt_lat+2;
#end
}
#declare Lines=union{
object{Long}
object{Lat} //North hemisphere
object{Lat scale<1,-1,1>} //South hemisphere
}
sphere {
0.0, Sphere_rad
texture {
pigment{
object {
Lines
color rgb <0,0,0.5>, // outside object
color rgb <0,1,0> // inside object
}
}
finish{
specular 0.6
}
}
}
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