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//
// curvature.pov
//
// (c) 2022 Prof Dr Andreas Müller, OST Ostschweizer Fachhochschule
//
#version 3.7;
#include "colors.inc"
global_settings {
assumed_gamma 1
}
#declare imagescale = 0.1;
camera {
location <40, 10, -20>
look_at <0, 0, 0>
right 16/9 * x * imagescale
up y * imagescale
}
light_source {
<10, 10, -40> 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(<-3.1,0,0>, <3.1,0,0>, 0.01, White)
arrow(<0,-1,0>, <0,1,0>, 0.01, White)
arrow(<0,0,-2.1>, <0,0,2.1>, 0.01, White)
#include "curvature.inc"
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