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|
//
// zylinder.pov
//
// (c) 2022 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule
//
#version 3.7;
#include "colors.inc"
global_settings {
assumed_gamma 1
}
#declare imagescale = 0.064;
#declare r = 0.025;
#declare R = 1.3 * r;
camera {
location <-43, 20, 40>
look_at <1, 0.65, 2.1>
right 16/9 * x * imagescale
up y * imagescale
}
light_source {
<-40, 20, 10> color White
area_light <1,0,0> <0,0,1>, 10, 10
adaptive 1
jitter
}
sky_sphere {
pigment {
color rgb<1,1,1>
}
}
//
// draw an arrow from <from> to <to> with thickness <arrowthickness> with
// color <c>
//
#macro arrow(from, to, arrowthickness, c)
#declare arrowdirection = vnormalize(to - from);
#declare arrowlength = vlength(to - from);
union {
sphere {
from, 1.1 * arrowthickness
}
cylinder {
from,
from + (arrowlength - 5 * arrowthickness) * arrowdirection,
arrowthickness
}
cone {
from + (arrowlength - 5 * arrowthickness) * arrowdirection,
2 * arrowthickness,
to,
0
}
pigment {
color c
}
finish {
specular 0.9
metallic
}
}
#end
arrow(<-1.5,0,0>, <1.5,0,0>, r, White)
arrow(<0,-1,0>, <0,2.5,0>, r, White)
arrow(<0,0,-1.5>, <0,0,2*pi+0.5>, r, White)
#declare cylindercolor = rgb<0.6,0.8,1.0>;
#declare transparentcylinder = rgbf<0.6,0.8,1.0,0.7>;
#declare planecolor = rgb<0.2,0.8,0.4>;
#declare transparentplane = rgbf<0.2,0.8,0.4,0.7>;
difference {
cylinder { <0,0,0>, <0,2,0>, 1 }
cylinder { <0,-1,0>, <0,3,0>, 0.99 }
pigment {
color transparentcylinder
}
finish {
specular 0.9
metallic
}
}
box {
<1,0,0>, <0.99,2,2*pi>
pigment {
color transparentplane
}
finish {
specular 0.9
metallic
}
}
#macro punkt(phi)
<cos(phi), phi/pi, sin(phi)>
#end
#macro geschwindigkeit(phi)
<-sin(phi), 1/pi, cos(phi)>
#end
union {
#declare N = 100;
#declare phistep = 2*pi/N;
#declare phi = 0;
#declare maxphi = 2*pi;
#while (phi < maxphi - phistep/2)
sphere { punkt(phi), r}
cylinder { punkt(phi), punkt(phi+phistep), r }
#declare phi = phi + phistep;
#end
sphere { punkt(phi), r}
pigment {
color Red
}
finish {
specular 0.95
metallic
}
}
union {
sphere { <1,0,0>, r }
sphere { <1,2,2*pi>, r }
cylinder { <1,0,0>, <1,2,2*pi>, r }
pigment {
color Orange
}
finish {
specular 0.95
metallic
}
}
#declare winkel = (130/180) * pi;
#declare rr = 0.5 * r;
union {
sphere { <0,winkel/pi,0>, rr }
sphere { punkt(winkel), rr }
cylinder { <0,winkel/pi,0>, punkt(winkel), rr }
sphere { <cos(winkel), 0, sin(winkel)>, rr }
sphere { <cos(winkel), 2, sin(winkel)>, rr }
cylinder { <cos(winkel), 2, sin(winkel)>, <0, 2, 0>, rr }
sphere { <0,2,0>, rr }
sphere { <cos(winkel), 0, sin(winkel)>, rr }
cylinder { <cos(winkel), 0, sin(winkel)>, <0, 0, 0>, rr }
sphere { <0,0,0>, rr }
cylinder {
<cos(winkel), 0, sin(winkel)>
<cos(winkel), 2, sin(winkel)>
rr
}
pigment {
color White
}
finish {
specular 0.95
metallic
}
}
#declare geschwindigkeitsfarbe = rgb<1,0.6,1>;
arrow(punkt(winkel), punkt(winkel) + geschwindigkeit(winkel), r, geschwindigkeitsfarbe)
sphere { punkt(winkel), 1.3 * r
pigment {
color geschwindigkeitsfarbe
}
finish {
specular 0.95
metallic
}
}
|
