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|
//
// diffusion.pov
//
// (c) 2021 Prof Dr Andreas Müller, OST Ostscheizer Fachhochschule
//
#version 3.7;
#include "colors.inc"
#include "textures.inc"
#include "transforms.inc"
global_settings {
assumed_gamma 1
}
#declare imagescale = 0.077;
#declare N = 30;
#declare vscale = 10;
#declare r = 0.04;
camera {
location <43, 20, -20>
look_at <1, 0.83, 2.5>
right 16/9 * x * imagescale
up y * imagescale
}
light_source {
<20, 60, -80> color White
area_light <1,0,0> <0,0,1>, 40, 40
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
#declare O = <0,0,0>;
#declare Ex = <1,0,0>;
#declare Ey = <0,1,0>;
#declare Ez = <0,0,1>;
#declare s = 3;
#declare A_transformation = Matrix_Trans(<1.0300,0.2050,0.1050>,<0.4100,1.0250,0.1100>,<0.4200,0.2200,1.0150>,<0,0,0>);
//#declare A_transformation = Matrix_Trans(<1.0300,0.2050,0.1050>,<0.4100,1.0250,0.1100>,<0.4200,0.2200,0.5150>,<0,0,0>);
arrow(O, s * Ex, r, rgb<0.6,0.2,0.4>)
arrow(O, s * Ez, r, rgb<0.2,0.4,0.2>)
arrow(O, s * Ey, r, rgb<0.2,0.2,0.4>)
#declare A = vtransform(Ex, A_transformation);
#declare B = vtransform(Ey, A_transformation);
#declare C = vtransform(Ez, A_transformation);
#macro quadrant(rad)
intersection {
sphere { <0, 0, 0>, rad
//A_transformation
matrix <A.x, A.y, A.z,
B.x, B.y, B.z,
C.x, C.y, C.z,
0, 0, 0 >
}
plane { vnormalize(-vcross(A, B)), 0 }
plane { vnormalize(-vcross(B, C)), 0 }
plane { vnormalize(-vcross(C, A)), 0 }
pigment {
color rgbf<0.8,1,1,0.5>
//color rgb<0.8,1,1>
}
finish {
specular 0.9
metallic
}
}
union {
cylinder { O, s*A, 0.3*r }
sphere { s*A, 0.3*r }
cylinder { O, s*B, 0.3*r }
sphere { s*B, 0.3*r }
cylinder { O, s*C, 0.3*r }
sphere { s*C, 0.3*r }
pigment {
color White
}
finish {
specular 0.9
metallic
}
}
#end
#declare d = 3;
//union {
// plane { <0, 1, 0>, -d }
// plane { <1, 0, 0>, -d }
// pigment {
// color Gray
// }
// finish {
// specular 0.9
// }
//}
quadrant(s)
#declare V = < 1, 1, 0 >;
#declare U = < 1.3, 2.5, 0 >;
#declare VV = vtransform(V, A_transformation);
#declare Vx = vtransform(<V.x, 0, 0>, A_transformation);
#declare Vy = vtransform(<0, V.y, 0>, A_transformation);
#declare UU = vtransform(U, A_transformation);
#declare Ux = vtransform(<U.x, 0, 0>, A_transformation);
#declare Uy = vtransform(<0, U.y, 0>, A_transformation);
union {
sphere { V, r }
sphere { U, r }
cylinder { U, V, 0.5*r }
pigment {
color Red
}
finish {
specular 0.9
metallic
}
}
union {
cylinder { < U.x, 0, 0 >, < U.x, U.y, 0>, 0.3 * r }
cylinder { < V.x, 0, 0 >, < V.x, V.y, 0>, 0.3 * r }
cylinder { < 0, U.y, 0 >, < U.x, U.y, 0>, 0.3 * r }
cylinder { < 0, V.y, 0 >, < V.x, V.y, 0>, 0.3 * r }
pigment {
color rgb<1, 0.6, 1>
}
finish {
specular 0.9
metallic
}
}
union {
sphere { VV, r }
sphere { UU, r }
cylinder { UU, VV, 0.5*r }
pigment {
color Yellow
}
finish {
specular 0.9
metallic
}
}
union {
cylinder { Ux, UU, 0.3 * r }
cylinder { Uy, UU, 0.3 * r }
cylinder { Vx, VV, 0.3 * r }
cylinder { Vy, VV, 0.3 * r }
pigment {
color rgb<1, 1, 0.6>
}
finish {
specular 0.9
metallic
}
}
|
