calc_tile_size()

static void calc_tile_size ( int  dimX, int  dimY, int *  tileX, int *  tileY  )

static

Definition at line 450 of file raster2pgsql.c.

References FLT_EQ, and r.

Referenced by convert_raster().

  {
        int i = 0;
        int j = 0;
        int min = 30;
        int max = 100;

        int d = 0;
        double r = 0;
        /*int _d = 0;*/
        double _r = -1;
        int _i = 0;

        /* j = 0, X */
        for (j = 0; j < 2; j++) {
                _i = 0;
                /*_d = 0;*/
                _r = -1;

                if (j < 1 && dimX <= max) {
                        *tileX = dimX;
                        continue;
                }
                else if (dimY <= max) {
                        *tileY = dimY;
                        continue;
                }

                for (i = max; i >= min; i--) {
                        if (j < 1) {
                                d = dimX / i;
                                r = (double) dimX / (double) i;

                        }
                        else {
                                d = dimY / i;
                                r = (double) dimY / (double) i;
                        }
                        r = r - (double) d;

                        if (
                                FLT_EQ(_r, -1) ||
                                (r < _r) ||
                                FLT_EQ(r, _r)
                        ) {
                                /*_d = d;*/
                                _r = r;
                                _i = i;
                        }
                }

                if (j < 1)
                        *tileX = _i;
                else
                        *tileY = _i;
        }
}

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