encode_mpoly()

static void encode_mpoly ( struct mvt_agg_context *  ctx, LWMPOLY *  lwmpoly  )

static

Definition at line 232 of file mvt.c.

References encode_ptarray(), mvt_agg_context::feature, LWMPOLY::geoms, MVT_RING, LWMPOLY::ngeoms, POINTARRAY::npoints, LWPOLY::nrings, and LWPOLY::rings.

Referenced by encode_geometry().

{
        uint32_t i, j;
        int32_t px = 0, py = 0;
        size_t c = 0, offset = 0;
        LWPOLY *poly;
        VectorTile__Tile__Feature *feature = ctx->feature;
        feature->type = VECTOR_TILE__TILE__GEOM_TYPE__POLYGON;
        feature->has_type = 1;
        for (i = 0; i < lwmpoly->ngeoms; i++)
                for (j = 0; poly = lwmpoly->geoms[i], j < poly->nrings; j++)
                        c += 3 + ((poly->rings[j]->npoints - 1) * 2);
        feature->geometry = palloc(sizeof(*feature->geometry) * c);
        for (i = 0; i < lwmpoly->ngeoms; i++)
                for (j = 0; poly = lwmpoly->geoms[i], j < poly->nrings; j++)
                        offset += encode_ptarray(ctx, MVT_RING,
                                poly->rings[j], feature->geometry + offset,
                                &px, &py);
        feature->n_geometry = offset;
}

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