51 lines
1.6 KiB
C
51 lines
1.6 KiB
C
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/*
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Copyright (c) 2009 David Bucciarelli (davibu@interfree.it)
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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"Software"), to deal in the Software without restriction, including
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without limitation the rights to use, copy, modify, merge, publish,
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distribute, sublicense, and/or sell copies of the Software, and to
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permit persons to whom the Software is furnished to do so, subject to
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the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef _GEOM_H
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#define _GEOM_H
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#include "vec.h"
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#define EPSILON 0.01f
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#define FLOAT_PI 3.14159265358979323846f
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typedef struct {
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Vec o, d;
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} Ray;
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#define rinit(r, a, b) { vassign((r).o, a); vassign((r).d, b); }
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#define rassign(a, b) { vassign((a).o, (b).o); vassign((a).d, (b).d); }
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enum Refl {
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DIFF, SPEC, REFR
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}; /* material types, used in radiance() */
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typedef struct {
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float rad; /* radius */
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Vec p, e, c; /* position, emission, color */
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enum Refl refl; /* reflection type (DIFFuse, SPECular, REFRactive) */
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} Sphere;
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#endif /* _GEOM_H */
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