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 Scene Description File
// File: float5.pov
// Author:
// Description: Demonstrates various new float math functions and #while loop
// Modified for 3.5: changed "log()" to "ln()".

global_settings {assumed_gamma 1.0}

#include "colors.inc"

#declare Rad = 1/6;
#declare Font = "cyrvetic.ttf"

#declare Xval = -6.0;

#while (Xval <= 6.0)
	sphere {<Xval, exp(Xval), 0>, Rad pigment {Red}}
	#if (Xval != 0.0)
		sphere {<Xval, pow(Xval,-1), 0>, Rad pigment {Green}}
	#end
	sphere {<Xval, pow(Xval, 2), 0>, Rad pigment {Blue}}
	sphere {<Xval, pow(Xval, 3), 0>, Rad pigment {Cyan}}
	#if (Xval > 0.0)
		sphere {<Xval, ln(Xval), 0>, Rad pigment {Magenta}}
	#end
	#declare Xval = Xval+0.1;
#end

text {ttf Font "Y = exp(X)", 0.1, 0 translate <-6.5, 0.5, 0> pigment {Red}}
text {ttf Font "Y = pow(X,-1)", 0.1, 0 translate <-6.5,-1.5, 0> pigment {Green}}
text {ttf Font "Y = pow(X, 2)", 0.1, 0 translate <-6.5, 3, 0> pigment {Blue}}
text {ttf Font "Y = pow(X, 3)", 0.1, 0 translate <-6.5,-4, 0> pigment {Cyan}}
text {ttf Font "Y = ln(X)", 0.1, 0 translate <2.5, 2, 0> pigment {Magenta}}

camera {
	location <0, 0,-120>
	direction <0, 0, 12>
	look_at <0, 0, 0>
}

light_source {<5000, 10000,-20000> color White}
plane {-z,-Rad pigment {checker color rgb <1, .8, .8> color rgb <1, 1, .8>}}

union {	// X-axis
	cylinder {-x*5.5, x*5.5, .1}
	cone {-x*6.5, 0,-x*5.5, .2}
	cone {x*6.5, 0, x*5.5, .2}
	translate z*Rad
	pigment {rgb <1, .8, 1>}
}

union {	// Y-axis
	cylinder {-y*4, y*4, .1}
	cone {-y*5, 0,-y*4, .2}
	cone {y*5, 0, y*4, .2}
	translate z*Rad
	pigment {rgb <.8, 1, 1>}
}

union {	// Axes labels
	text {ttf Font "X", 0.1, 0 translate <5.5,-1, 0>}
	text {ttf Font "Y", 0.1, 0 translate <-.75, 4, 0>}
	pigment {rgb <1, .4, 0>}
}

Et voici ce que nous obtenons :