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/* padding on 32 bits systems (to match automatic 64 bits padding) */
typedef struct _RSurface RSurface;
typedef struct { /* needs to be identical to typdirinfo in RStarTree.h */
double m01, m02, m03;
double m11, m13;
double m22, m23, m33;
double m44, m55, m66, m77;
double m67, m76;
double H0, H1, H2, H3, H4;
double H5, H6;
float Hmin, Hmax;
int n;
PADDING_32_BITS
} RSurfaceSum;
typedef struct {
float l, h;
} RSurfaceInterval;
typedef RSurfaceInterval RSurfaceRect[2];
typedef int (* RSurfaceCheck) (RSurfaceRect rect, void * data, int depth);
RSurface * r_surface_open (const char * fname, const char * mode, int size);
int r_surface_close (RSurface * rt);
typedef int (* RSurfaceQuery) (double p[3], void * user_data);
void r_surface_query_region (RSurface * rt,
double min[2], double max[2],
RSurfaceQuery q, void * user_data);
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