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Hi!!
I'm a new user of POV. I looked your FAQ but I didn't find answers to my
problem.
I need to model a cornell box with photon mapping. I used different scenes
gave with pov to do it.
However, my photons in the scene are not always shot and when they are shot,
they don't give good results of global illumination. I don't see any
difference between basic ray tracing and photon mapping?
Following my pov file.
Thank you for your help
Arnaud Lapeyrade
// Persistence Of Vision Ray Tracer Scene Description File
// File: cornell.pov
// Vers: 3.5
// Desc: Radiosity demo scene. See also
http://www.Graphics.Cornell.EDU/online/box/
// Date: August 2001
// Auth: Kari Kivisalo
// +w300 +h300
#include "colors.inc"
#include "glass.inc"
#include "textures.inc"
global_settings {
assumed_gamma 1
max_trace_level 25
photons {
spacing 0.1 // study the photon spacing impact
count 1000000
autostop off
//save_file "D:BOULOT3D_Computer_GraphicsAssignment2map.ph"
}
}
#declare Finish=finish{diffuse 0.75 ambient 0}
#declare White=texture{pigment{rgb<1,1,1>} finish{Finish}}
#declare Red=texture{pigment{rgb<0.5,0.3,0.01>} finish{Finish}}
#declare Green=texture{pigment{rgb<0.025,0.236,0.1>} finish{Finish}}
#declare Radius = 10;
#declare LightColor=<1,0.67,0.21>;
//#declare N=3; // Divisions per side
//#declare DX=13/N; // Dimensions of sub patches
//#declare DZ=10.5/N;
/*
light_source {
<27.8, 54.88, 27.95>
color rgb <1.0, 1.0, 1.0>
shadowless
photons {
reflection on
refraction on
}
}*/
light_source{
<27.8,54.88,27.95>
color LightColor
// area_light <5, 0, 0>, <0, 0, 5>, 5, 5
adaptive 2
photons {
reflection on
refraction on
area_light
}
}
camera{
location <27.8, 27.3,-56.0>
direction <0, 0, 1>
look_at <27.8, 27.3, 1>
}
// ------------------------ OBJECTS ----------------------------
// Light Patch
sphere {
<16,10.0,35.0>,Radius
material {
texture {
pigment { color Col_Glass_Clear }
finish { F_Glass9 }
}
interior {
I_Glass_Exp(4)
// fade_color Col_Red_03
}
}
photons {
reflection on
refraction on
collect off
}
}
union{
sphere {
<40.0,10.0,10.0>,Radius
material {
texture {
pigment { color Col_Glass_Clear }
finish { F_Glass6 }
}
}
photons {
reflection on
refraction on
collect off
}
hollow off
}
}
union{
box{
<21.3,54.87,33.2><34.3,54.88,22.7> no_shadow
pigment{rgb<1,1,1>} finish{ambient 0.78 diffuse 0}
}
}
union{
// Floor
triangle{<55.28, 0.0, 0.0>,<0.0, 0.0, 0.0>,<0.0, 0.0, 55.92>
photons {
target
reflection off
refraction off
collect on
}
}
triangle{<55.28, 0.0, 0.0>,<0.0, 0.0, 55.92>,<54.96, 0.0, 55.92>
photons {
target
reflection off
refraction off
collect on
}
}
// Ceiling
triangle{<55.60, 54.88, 0.0>,<55.60, 54.88, 55.92>,<0.0, 54.88, 55.92>
photons {
target
reflection off
refraction off
collect on
}
}
triangle{<55.60, 54.88, 0.0>,<0.0, 54.88, 55.92>,<0.0, 54.88, 0.0>
photons {
target
reflection off
refraction off
collect on
}
}
// Back wall
triangle{<0.0, 54.88, 55.92>,<55.60, 54.88, 55.92>,<54.96, 0.0, 55.92>
photons {
target
reflection off
refraction off
collect on
}
}
triangle{<0.0, 54.88, 55.92>,<54.96, 0.0, 55.92>,<0.0, 0.0, 55.92>
photons {
target
reflection off
refraction off
collect on
}
}
texture {White}
}
union {
// Right wall
triangle{<0.0, 54.88, 0.0>,<0.0, 54.88, 55.92>,<0.0, 0.0, 55.92>
photons {
target
reflection off
refraction off
collect on
}
}
triangle{<0.0, 54.88, 0.0>,<0.0, 0.0, 55.92>,<0.0, 0.0, 0.0>
photons {
target
reflection off
refraction off
collect on
}
}
texture {Green}
}
union {
// Left wall
triangle{<55.28, 0.0, 0.0>,<54.96, 0.0, 55.92>,<55.60, 54.88, 55.92>
photons {
target
reflection off
refraction off
collect on
}
}
triangle{<55.28, 0.0, 0.0>,<55.60, 54.88, 55.92>,<55.60, 54.88, 0.0>
photons {
target
reflection off
refraction off
collect on
}
}
texture {Red}
}
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