ptarray_remove_dim_helper()

static void ptarray_remove_dim_helper ( POINTARRAY *  points, double  mindx, double  mindy  )

static

Definition at line 40 of file lwgeom_remove_small_parts.c.

                                                                                      {
 
        int r;
        double xmin = 0, ymin = 0, xmax = 0, ymax = 0;
        double x, y;
        POINT4D point;
 
        int npoints = points->npoints;
        for (r=0; r < npoints; r++) {
 
                getPoint4d_p(points, r, &point);
 
                x = point.x;
                y = point.y;
 
                if (mindx > 0) {
                        if (!r || xmin > x) xmin = x;
                        if (!r || xmax < x) xmax = x;
                }
                if (mindy > 0) {
                        if (!r || ymin > y) ymin = y;
                        if (!r || ymax < y) ymax = y;
                }
        }
 
        if ((mindx > 0 && xmax - xmin < mindx) ||
                (mindy > 0 && ymax - ymin < mindy)) {
                // skip part
                points->npoints = 0;
        }
}

References getPoint4d_p(), POINTARRAY::npoints, r, POINT4D::x, and POINT4D::y.

Referenced by ST_RemoveSmallParts().

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