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greg |
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/* |
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* bsdf_t.h |
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* |
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* Support for variable-resolution BSDF trees |
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* |
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* Created by Greg Ward on 2/2/11. |
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* |
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*/ |
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#ifndef _BSDF_T_H_ |
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#define _BSDF_T_H_ |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#define SD_MAXDIM 4 /* maximum expected # dimensions */ |
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/* Basic node structure for variable-resolution BSDF data */ |
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typedef struct SDNode_s { |
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short ndim; /* number of dimensions */ |
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short log2GR; /* log(2) of grid resolution (< 0 for tree) */ |
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union { |
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struct SDNode_s *t[1]; /* subtree pointers */ |
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float v[1]; /* scattering value(s) */ |
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} u; /* subtrees or values (extends struct) */ |
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} SDNode; |
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/* Load a variable-resolution BSDF tree from an open XML file */ |
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extern SDError SDloadTre(SDData *sd, ezxml_t fl); |
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/* Our matrix handling routines */ |
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extern const SDFunc SDhandleTre; |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* ! _BSDF_T_H_ */ |
