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This small playground localizes this issue (shifting by Y):
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#include "colors.inc"
#version 3.8;
global_settings { assumed_gamma 1 }
//
// Axis textures
//
#declare tex_axis_common = texture {
pigment{ rgb <0.70, 0.70, 0.70>}
finish { phong 1 reflection {0.10 metallic 0.4} }}
#declare tex_axis_x = texture {
pigment{ rgb <1.00, 0.00, 0.00>}
finish { phong 1 reflection {0.10 metallic 0.4} }}
#declare tex_axis_y = texture {
pigment{ rgb <0.00, 1.00, 0.00>}
finish { phong 1 reflection {0.10 metallic 0.4} }}
#declare tex_axis_z = texture {
pigment{ rgb <0.00, 0.00, 1.00>}
finish { phong 1 reflection {0.10 metallic 0.4} }}
//
// Axis
//
#macro axis( len, rad, tex_odd, tex_even)
union{
cylinder { <0, -len, 0>,<0, len, 0>, rad
texture{ checker texture{ tex_odd } texture{ tex_even }
translate <0.1, 0, 0.1> }}
cone{<0, len, 0>, rad * 2, <0, len + rad * 7, 0>, 0 texture{tex_even}} }
#end
#macro axis_xyz( len_x, len_y, len_z, rad, tex_common, tex_x, tex_y, tex_z)
union{
#if (len_x != 0) object { axis(len_x, rad, tex_common, tex_x) rotate< 0,
0,-90>} #end
#if (len_y != 0) object { axis(len_y, rad, tex_common, tex_y) rotate< 0, 0,
0>} #end
#if (len_z != 0) object { axis(len_z, rad, tex_common, tex_z) rotate< 90, 0,
0>} #end }
#end
axis_xyz( 1.5, 1.5, 1.5, 0.02,tex_axis_common,tex_axis_x,tex_axis_y,tex_axis_z)
//
// Camera from +X +Y +Z
//
/*
camera
{ orthographic
location <5,5,5>
look_at <0,0,0>
angle 40
}
*/
//
// Camera from +Y
//
/*
camera
{ orthographic
location <0,10,0> / 1.5
look_at <0,0,0>
angle 40
}
*/
//
// Camera from +X
//
camera
{ orthographic
location <10,0,0> / 1.5
look_at <0,0,0>
angle 40
}
//
// Light
//
light_source { <0, 10, 0>, rgb <1,1,1> }
light_source { <10,0, 0>, rgb <1,1,1> }
light_source { <0, 0, 10>, rgb <1,1,1> }
//
// Poly0_2 common function
//
#declare FnPoly0_2 = function { pattern {
granite poly_wave 0.2 scale 0.7 }}
//
// No scale - shift by Y
//
#declare HF_Poly0_2_1 = height_field {
function 800, 800 { FnPoly0_2(x,y,z) }
pigment {Green}}
//
// With scale - shift by Y even more
//
#declare HF_Poly0_2_2 = height_field {
function 800, 800 { FnPoly0_2(x,y,z) }
scale <2, 2, 2>
pigment {Red}}
object { HF_Poly0_2_1 }
object { HF_Poly0_2_2 }
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Attachments:
Download 'scale_y_shift.png' (46 KB)
Preview of image 'scale_y_shift.png'
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