Utilisation : Les liens ne sont pas apparents. Pour obtenir des informations sur un mot clé, cliquez-le dans le script !

// Persistence Of Vision raytracer version 3.5 sample file.
// Magnifying glass created using POV-Ray's refraction.
// A convex lens created with CSG
// (and something to view through it)
// This example doesn't work very well, but it gives a good
// starting point for a better use of the magnifying glass.

global_settings {assumed_gamma 2.2}

#include "colors.inc"
#include "shapes.inc"
#include "textures.inc"
#include "glass.inc"
#include "consts.inc"	// Index of refraction constants

camera {
	location <0.0, 2,-10>
	direction <0.0, 0.0, 1>
	angle 40
	up <0.0, 1.0, 0.0>
	right <4/3, 0.0, 0.0>
	look_at <0, 0, 0>
}

light_source {<30, 50,-50> color White}
light_source {<-30, 10, 20> color Gray50}

fog {color Gray50 distance 200}	// This fog reaches max density at 200z

// Background sphere
sphere {<0, 0, 0>, 1
	hollow on
	finish {crand 0.015}
	pigment {
		gradient y
		color_map {[0.0 1.0 color Gray80 color Gray30]}
		scale 10000
	}
}

// A lens. This uses the Ellipsoid quadric to make it independantly
// scalable, but it would be faster to use spheres.
// It is designed "sideways" so you can see the thickness.
// It is then rotated 90o on Y so the viewer is looking through the lens.
#declare Lens_Thickness = 0.35;
#declare Lens_Diameter = 1.5;

#declare Lens = intersection {
	sphere {<0, 0, 0>, 1.5 translate <0.75, 0, 0>}
	sphere {<0, 0, 0>, 1.5 translate <-0.75, 0, 0>}
	interior {ior Flint_Glass_Ior}
	texture {
		T_Glass3
		finish {reflection 0}	// Over-ride reflection
	}
	scale <Lens_Thickness, Lens_Diameter, Lens_Diameter>
}

plane {y,-4
	pigment {
		checker color HuntersGreen color SummerSky
		scale <3, 1, 3>
	}
	finish {
		ambient 0.2
		diffuse 0.6
	}
}

object {Lens rotate 80*y}

// A sphere in the distance
sphere {<3, 1, 30>, 2 finish {Phong_Shiny} pigment {Orange}}

object {Cylinder_X
	finish {
		Phong_Shiny
		ambient 0.25
		diffuse 0.6
	}
	pigment {
		granite
		scale 2
	}
	rotate -75*y
	translate <0,-3, 25>
}

Et voici ce que nous obtenons :