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Hello all. This is my first post. Hope I'm following protocol.
Below is code I wrote for the difference between a helix isosurface and a
box. As you can see the box is removing the section of helix but leaving
an artifact. Can anyone explain how to fix this? Thanks in advance.
#include "colors.inc"
#include "functions.inc"
global_settings {
assumed_gamma 1.3
max_trace_level 5}
camera { location <3,3,-4>
look_at <1,0,0>}
light_source {<10, 20, -30> color Gray25}
sky_sphere {pigment {gradient y color_map {[0, 1 color Gray50 color
Gray80]}}}
plane { y, -1.25 pigment {checker color Gray40 color Gray80 scale <1, 1,
10000> rotate y*45} finish { ambient 0.45 }}
#declare IsoTexture = texture { pigment { rgb <1.0, 0.8, 0.5> } finish {
phong 0.6 phong_size 250 } }
#declare spring =
isosurface {
function { f_helix1(x,y,z, 1, 20, 0.0875, 0.75, 1,
1, 0) }
contained_by { box { <-1, -2.2, -1>, <2, 2, 2> } }
max_gradient 5
texture { IsoTexture }
no_shadow
scale <1,1,-1>
rotate <0,0,90>
}
#declare cutaway =
box { <-10,0,0> <20,100,-100> pigment {White}
}
difference{
object{spring}
object{cutaway}
}
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