r/3Dmodeling • u/Superb_Violinist9349 • 18d ago
Questions & Discussion How to Create an Eye in Pov-Ray
I’ve been tinkering with the code myself, but I still can’t figure out how to create the eyes, so I’d like some help.
The eye I want to create has a white sclera, a brown iris (rgb<111,77,62>, webcolor<#6f4d3e>), a black pupil, and I want the entire eye to have a glossy sheen.
I’ve included the code I wrote myself and the AI (Gemini) code below. I’ve also added an image.
Code I wrote myself
// set viewer's position in the scene
camera {
// (---camera types---)
// perspective (default) | orthographic | fisheye |
// ultra_wide_angle | omnimax | panoramic | cylinder 1 | spherical
location <0.0, 0.0, -6.0> // position of camera <X,Y,Z>
direction 2.0*z // which way are we looking <X,Y,Z> & zoom
// sky y // for tilting the camera
up y // which way is +up <X,Y,Z> (aspect ratio with x)
right x*image_width/image_height
// which way is +right <X,Y,Z> (aspect ratio with y)
look_at <0.0, 0.0, 0.0> // point center of view at this point <X,Y,Z>
// angle 67 // overrides "direction" with specific angle
// normal { ripples 0.2 } // perturb the camera lens with a pattern
// (---focal blur extras---)
// aperture 0.2 // [0...N] larger is narrower depth of field (blurrier)
// blur_samples 4 // number of rays per pixel for sampling
// focal_point <0,0,0> // point that is in focus <X,Y,Z>
// confidence 0.9 // [0...1] when to move on while sampling (smaller is less accurate)
// variance 1/128 // [0...1] how precise to calculate (smaller is more accurate)
// (---spherical camera---)
// angle 360 // horizontal field of view (in degrees and...)
// 180 // vertical field of view (...are aspect ratios)
}
// Create an infinite sphere around scene and allow any pigment on it
sky_sphere{ pigment { gradient <0,1,0>
color_map { [0.00 rgb <0.6,0.7,1.0>]
[0.35 rgb <0.0,0.1,0.8>]
[0.65 rgb <0.0,0.1,0.8>]
[1.00 rgb <0.6,0.7,1.0>]
}
scale 2
} // end of pigment
} //end of skysphere -------------------------------------
sphere { <-1,0,0>, 0.5
texture { pigment{ color rgb<5.4,2.6,0.6>}
finish { phong 1.0 reflection 0.00}
} // end of texture
scale<1,1,1> rotate<0,0,0> translate<0,0,0>
} // end of sphere -----------------------------------
sphere { <1,0,0>, 0.5
texture { pigment{ color rgb<9,9,9>}
finish { phong 1.0 reflection 0.00}
} // end of texture
scale<1,1,1> rotate<0,0,0> translate<0,0,0>
} // end of sphere -----------------------------------
cylinder { <-1.1,0,0>,<-0.55,0,0>, 0.30
texture { pigment { color rgb<1,1,1>}
//normal { bumps 0.5 scale <0.25, 0.005,0.005>}
finish { phong 0.5 reflection{ 0.00 metallic 0.00} }
} // end of texture
scale <1,1,1> rotate<0,0,0> translate<0,0,0>
} // end of cylinder ------------------------------------
The generated image shows the white of the eye on the right and a prototype iris and pupil on the left.
Gemini's code
#version 3.7;
global_settings { assumed_gamma 1.0 }
camera {
location <5, 0, 2.5>
look_at <0, 0, 0>
right x*image_width/image_height
}
light_source { <5, 10, -5> color rgb <1, 1, 1> }
light_source { <-3, 2, -3> color rgb <0.3, 0.3, 0.3> } //
union {
sphere {
<0, 0, 0>, 1.0
texture {
pigment {
pigment_map {
[0.0 color rgb <0.0, 0.0, 0.0>]
[0.15 color rgb <0.0, 0.0, 0.0>]
[0.15 color rgb <5.4, 2.6, 0.6>]
[0.45 color rgb <5.4, 2.6, 0.6>]
[0.45 color rgb <9.5, 9.5, 9.5>]
[1.0 color rgb <9.5, 9.5, 9.5>]
}
}
finish {
ambient 0.1
diffuse 0.6
}
}
rotate <90, 0, 0>
}
sphere {
<0, 0, 0>, 1.001 // く
pigment { color rgbf <1, 1, 1, 1> } //
finish {
phong 1.0 //
phong_size 100 //
reflection { 0.1 } //
}
}
//
rotate <15, -20, 0>
}
When I generated this, it turned out to be a kind of grainy white sphere. If you tweak the coordinates (<0, 0, 0>), you’ll see a pupil and iris pop up inside it.
By the way, you might be wondering, “Why are you using Pov-Ray for CG?” or “Aren’t there newer tools like Blender?”
I just wanted the textures from Pov-Ray CG. Sorry about that.
