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monkstone
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Adding Cornell Box in python
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‎raytracing/cornell_box.pov

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// Persistence Of Vision Ray Tracer Scene Description pov_fib
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// pov_fib: Generated by tracer.py
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// tracer.py is based on http://code.activestate.com/recipes/205451/ (r1)
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// For PovRAY Version: 3.7 (includes radiosity)
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// Date: September 2011
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// Auth: Martin Prout
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// +width 800 +height 600 for basic_scene example
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#version 3.7;
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global_settings{
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assumed_gamma 1.0
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radiosity{
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pretrace_start 0.04
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pretrace_end 0.01
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count 200
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recursion_limit 3
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nearest_count 10
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error_bound 0.5
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}
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}
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#include "colors.inc"
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#include "skies.inc"
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#declare LightColor=<1,0.67,0.21>;
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#declare N=3; //Divisions per side
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#declare DX=13/N; //Dimensions of sub patches
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#declare DZ=10.5/N;
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#declare SubPatch=
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light_source{
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<27.8,54.88,27.95>
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color LightColor*7
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area_light DX*x, DZ*z, 4, 4 jitter adaptive 0
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spotlight radius -90 falloff 90 tightness 1 point_at <27.8,0,27.95> //for cosine falloff
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fade_power 2 fade_distance (DX+DZ)/2
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}
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#declare i=0;#while (i<N)
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#declare j=0;#while (j<N)
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light_source{SubPatch translate<i*DX-(13-DX)/2,0,j*DZ-(10.5-DZ)/2>}
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#declare j=j+1;#end
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#declare i=i+1;#end
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camera
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{
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direction <0, 0, 1>
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right <-1, 0, 0>
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angle 39.5
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up <0, 1, 0>
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location <27.8, 27.3, -80>
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}
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box
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{
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<21.3, 54.87, 33.2>, <34.3, 54.88, 22.7>
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no_shadow
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pigment
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{
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rgb <1, 1, 1>
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}
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finish
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{
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diffuse 0
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emission 0.78
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}
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}
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union
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{
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triangle
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{
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<55.28, 0.0, 0.0>, <0.0, 0.0, 0.0>, <0.0, 0.0, 55.92>
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}
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triangle
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{
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<55.28, 0.0, 0.0>, <0.0, 0.0, 55.92>, <54.96, 0.0, 55.92>
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}
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triangle
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{
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<55.6, 54.88, 0.0>, <55.6, 54.88, 55.92>, <0.0, 54.88, 55.92>
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}
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triangle
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{
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<55.6, 54.88, 0.0>, <0.0, 54.88, 55.92>, <0.0, 54.88, 0.0>
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}
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triangle
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{
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<0.0, 54.88, 55.92>, <55.6, 54.88, 55.92>, <54.96, 0.0, 55.92>
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}
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triangle
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{
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<0.0, 54.88, 55.92>, <54.96, 0.0, 55.92>, <0.0, 0.0, 55.92>
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}
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texture
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{
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pigment
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{
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rgb <1, 1, 1>
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}
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finish
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{
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diffuse 0.75
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ambient 0
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}
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}
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}
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union
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{
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triangle
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{
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<0.0, 54.88, 0.0>, <0.0, 54.88, 55.92>, <0.0, 0.0, 55.92>
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}
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triangle
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{
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<0.0, 54.88, 0.0>, <0.0, 0.0, 55.92>, <0.0, 0.0, 0.0>
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}
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texture
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{
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pigment
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{
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rgb <0.025, 0.236, 0.025>
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}
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finish
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{
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diffuse 0.75
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ambient 0
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}
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}
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}
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union
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{
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triangle
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{
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<55.28, 0.0, 0.0>, <54.96, 0.0, 55.92>, <55.6, 54.88, 55.92>
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}
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triangle
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{
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<55.28, 0.0, 0.0>, <55.6, 54.88, 55.92>, <55.6, 54.88, 0.0>
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}
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texture
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{
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pigment
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{
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rgb <0.57, 0.025, 0.025>
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}
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finish
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{
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diffuse 0.75
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ambient 0
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}
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}
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}
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union
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{
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triangle
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{
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<13.0, 16.5, 6.5>, <8.2, 16.5, 22.5>, <24.0, 16.5, 27.2>
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}
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triangle
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{
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<13.0, 16.5, 6.5>, <24.0, 16.5, 27.2>, <29.0, 16.5, 11.4>
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}
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triangle
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{
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<29.0, 0.0, 11.4>, <29.0, 16.5, 11.4>, <24.0, 16.5, 27.2>
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}
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triangle
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{
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<29.0, 0.0, 11.4>, <24.0, 16.5, 27.2>, <24.0, 0.0, 27.2>
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}
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triangle
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{
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<13.0, 0.0, 6.5>, <13.0, 16.5, 6.5>, <29.0, 16.5, 11.4>
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}
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triangle
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{
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<13.0, 0.0, 6.5>, <29.0, 16.5, 11.4>, <29.0, 0.0, 11.4>
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}
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triangle
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{
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<8.2, 0.0, 22.5>, <8.2, 16.5, 22.5>, <13.0, 16.5, 6.5>
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}
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triangle
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{
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<8.2, 0.0, 22.5>, <13.0, 16.5, 6.5>, <13.0, 0.0, 6.5>
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}
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triangle
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{
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<24.0, 0.0, 27.2>, <24.0, 16.5, 27.2>, <8.2, 16.5, 22.5>
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}
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triangle
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{
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<24.0, 0.0, 27.2>, <8.2, 16.5, 22.5>, <8.2, 0.0, 22.5>
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}
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texture
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{
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pigment
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{
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rgb <1, 1, 1>
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}
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finish
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{
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diffuse 0.75
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ambient 0
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}
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}
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}
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union
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{
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triangle
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{
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<42.3, 33.0, 24.7>, <26.5, 33.0, 29.6>, <31.4, 33.0, 45.6>
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}
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triangle
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{
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<42.3, 33.0, 24.7>, <31.4, 33.0, 45.6>, <47.2, 33.0, 40.6>
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}
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triangle
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{
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<42.3, 0.0, 24.7>, <42.3, 33.0, 24.7>, <47.2, 33.0, 40.6>
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}
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triangle
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{
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<42.3, 0.0, 24.7>, <47.2, 33.0, 40.6>, <47.2, 0.0, 40.6>
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}
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triangle
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{
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<47.2, 0.0, 40.6>, <47.2, 33.0, 40.6>, <31.4, 33.0, 45.6>
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}
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triangle
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{
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<47.2, 0.0, 40.6>, <31.4, 33.0, 45.6>, <31.4, 0.0, 45.6>
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}
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triangle
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{
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<31.4, 0.0, 45.6>, <31.4, 33.0, 45.6>, <26.5, 33.0, 29.6>
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}
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triangle
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{
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<31.4, 0.0, 45.6>, <26.5, 33.0, 29.6>, <26.5, 0.0, 29.6>
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}
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triangle
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{
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<26.5, 0.0, 29.6>, <26.5, 33.0, 29.6>, <42.3, 33.0, 24.7>
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}
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triangle
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{
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<26.5, 0.0, 29.6>, <42.3, 33.0, 24.7>, <42.3, 0.0, 24.7>
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}
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texture
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{
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pigment
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{
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rgb <1, 1, 1>
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}
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finish
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{
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diffuse 0.75
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ambient 0
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}
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}
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}
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‎raytracing/cornell_box.py

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"""
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cornell_box.py
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Object Orientated Cornell Box, some elements fudged by plain text copying mainly
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using a modified recipe (http://code.activestate.com/recipes/205451/ (r1)) as the
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interface
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"""
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from povwriter import *
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LC ='LightColor=<1,0.67,0.21>;'
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N = 'N=3; //Divisions per side'
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DX = 'DX=13/N; //Dimensions of sub patches'
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DZ = 'DZ=10.5/N;'
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SP = """SubPatch=
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light_source{
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<27.8,54.88,27.95>
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color LightColor*7
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area_light DX*x, DZ*z, 4, 4 jitter adaptive 0
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spotlight radius -90 falloff 90 tightness 1 point_at <27.8,0,27.95> //for cosine falloff
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fade_power 2 fade_distance (DX+DZ)/2
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}"""
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I0 = 'i=0;#while (i<N)'
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J0 = ' j=0;#while (j<N)'
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UF = ' light_source{SubPatch translate<i*DX-(13-DX)/2,0,j*DZ-(10.5-DZ)/2>}'
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JE = ' j=j+1;#end'
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IE = 'i=i+1;#end'
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class CornellBox(object):
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"""
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Cornell box mainly as an object, except for the lights which are bit complicated
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"""
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def __init__(self):
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self.scene = POVFile("cornell_box.pov", "colors.inc", "skies.inc")
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self.cam = Camera(
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location = (27.8, 27.3, -80),
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direction = (0, 0, 1),
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up = (0, 1, 0),
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right = (-1, 0, 0),
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angle = 39.5
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)
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# light patch
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self.skylight = Box ((21.3, 54.87, 33.2), (34.3, 54.88, 22.7), 'no_shadow',
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Pigment(rgb = (1, 1, 1)), Finish(emission = 0.78, diffuse = 0))
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# Floor, Ceiling, Backwall
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self.cornell_box = Union(
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# Floor
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Triangle((55.28, 0.0, 0.0), (0.0, 0.0, 0.0), (0.0, 0.0, 55.92)),
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Triangle((55.28, 0.0, 0.0), (0.0, 0.0, 55.92), (54.96, 0.0, 55.92)),
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# Ceiling
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Triangle((55.60, 54.88, 0.0), (55.60, 54.88, 55.92), (0.0, 54.88, 55.92)),
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Triangle((55.60, 54.88, 0.0), (0.0, 54.88, 55.92), (0.0, 54.88, 0.0)),
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# Backwall
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Triangle((0.0, 54.88, 55.92), (55.60, 54.88, 55.92), (54.96, 0.0, 55.92)),
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Triangle((0.0, 54.88, 55.92), (54.96, 0.0, 55.92), (0.0, 0.0, 55.92)),
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Texture(Pigment(rgb = (1, 1, 1)), Finish(diffuse=0.75, ambient = 0))
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)
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# Right wall
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self.right_wall = Union (
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Triangle((0.0, 54.88, 0.0), (0.0, 54.88, 55.92), (0.0, 0.0, 55.92)),
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Triangle((0.0, 54.88, 0.0), (0.0, 0.0, 55.92), (0.0, 0.0, 0.0)),
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Texture(Pigment(rgb = (0.025, 0.236, 0.025)), Finish(diffuse=0.75, ambient = 0))
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)
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# Left wall
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self.left_wall = Union (
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Triangle((55.28, 0.0, 0.0), (54.96, 0.0, 55.92), (55.60, 54.88, 55.92)),
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Triangle((55.28, 0.0, 0.0), (55.60, 54.88, 55.92), (55.60, 54.88, 0.0)),
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Texture(Pigment(rgb = (0.57, 0.025, 0.025)), Finish(diffuse=0.75, ambient = 0))
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)
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self.short_box = Union (
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#Short block
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Triangle((13.00, 16.50, 6.50), (8.20, 16.50, 22.50), (24.00, 16.50, 27.20)),
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Triangle((13.00, 16.50, 6.50), (24.00, 16.50, 27.20), (29.00, 16.50, 11.40)),
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Triangle((29.00, 0.0, 11.40), (29.00, 16.50, 11.40), (24.00, 16.50, 27.20)),
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Triangle((29.00, 0.0, 11.40), (24.00, 16.50, 27.20), (24.00, 0.0, 27.20)),
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Triangle((13.00, 0.0, 6.50), (13.00, 16.50, 6.50), (29.00, 16.50, 11.40)),
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Triangle((13.00, 0.0, 6.50), (29.00, 16.50, 11.40), (29.00, 0.0, 11.40)),
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Triangle((8.20, 0.0, 22.50), (8.20, 16.50, 22.50), (13.00, 16.50, 6.50)),
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Triangle((8.20, 0.0, 22.50), (13.00, 16.50, 6.50), (13.00, 0.0, 6.50)),
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Triangle((24.00, 0.0, 27.20), (24.00, 16.50, 27.20), (8.20, 16.50, 22.50)),
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Triangle((24.00, 0.0, 27.20), (8.20, 16.50, 22.50), (8.20, 0.0, 22.50)),
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Texture(Pigment(rgb = (1, 1, 1)), Finish(diffuse=0.75, ambient = 0))
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)
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self.tall_box = Union (
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#Tall block
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Triangle((42.30, 33.00, 24.70), (26.50, 33.00, 29.60), (31.40, 33.00, 45.60)),
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Triangle((42.30, 33.00, 24.70), (31.40, 33.00, 45.60), (47.20, 33.00, 40.60)),
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Triangle((42.30, 0.0, 24.70), (42.30, 33.00, 24.70), (47.20, 33.00, 40.60)),
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Triangle((42.30, 0.0, 24.70), (47.20, 33.00, 40.60), (47.20, 0.0, 40.60)),
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Triangle((47.20, 0.0, 40.60), (47.20, 33.00, 40.60), (31.40, 33.00, 45.60)),
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Triangle((47.20, 0.0, 40.60), (31.40, 33.00, 45.60), (31.40, 0.0, 45.60)),
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Triangle((31.40, 0.0, 45.60), (31.40, 33.00, 45.60), (26.50, 33.00, 29.60)),
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Triangle((31.40, 0.0, 45.60), (26.50, 33.00, 29.60), (26.50, 0.0, 29.60)),
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Triangle((26.50, 0.0, 29.60), (26.50, 33.00, 29.60), (42.30, 33.00, 24.70)),
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Triangle((26.50, 0.0, 29.60), (42.30, 33.00, 24.70), (42.30, 0.0, 24.70)),
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Texture(Pigment(rgb = (1, 1, 1)), Finish(diffuse=0.75, ambient = 0))
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)
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def writePovray(self):
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self.scene.declare(LC)
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self.scene.declare(N)
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self.scene.declare(DX)
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self.scene.declare(DZ)
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self.scene.declare(SP)
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self.scene.declare(I0)
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self.scene.declare(J0)
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self.scene.unformatted(UF)
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self.scene.declare(JE)
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self.scene.declare(IE)
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self.scene.write(self.cam, self.skylight, self.cornell_box, self.right_wall, self.left_wall,
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self.short_box, self.tall_box)
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def main():
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myScene = CornellBox()
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myScene.writePovray()
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if __name__ == "__main__":
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main()

‎raytracing/povwriter/__init__.py

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from povwriter import *

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