ptarray_from_SFCGAL()

static POINTARRAY * ptarray_from_SFCGAL ( const sfcgal_geometry_t *  geom, int  force3D  )

static

Definition at line 119 of file liblwgeom/lwgeom_sfcgal.c.

References lwerror(), ptarray_construct(), ptarray_set_point4d(), POINT4D::x, POINT4D::y, and POINT4D::z.

Referenced by SFCGAL2LWGEOM().

{
        POINT4D point;
        uint32_t i, npoints;
        POINTARRAY* pa = NULL;

        assert(geom);

        switch (sfcgal_geometry_type_id(geom))
        {
        case SFCGAL_TYPE_POINT:
        {
                pa = ptarray_construct(want3d, 0, 1);
                point.x = sfcgal_point_x(geom);
                point.y = sfcgal_point_y(geom);

                if (sfcgal_geometry_is_3d(geom))
                        point.z = sfcgal_point_z(geom);
                else if (want3d)
                        point.z = 0.0;

                ptarray_set_point4d(pa, 0, &point);
        }
        break;

        case SFCGAL_TYPE_LINESTRING:
        {
                npoints = sfcgal_linestring_num_points(geom);
                pa = ptarray_construct(want3d, 0, npoints);

                for (i = 0; i < npoints; i++)
                {
                        const sfcgal_geometry_t* pt = sfcgal_linestring_point_n(geom, i);
                        point.x = sfcgal_point_x(pt);
                        point.y = sfcgal_point_y(pt);

                        if (sfcgal_geometry_is_3d(geom))
                                point.z = sfcgal_point_z(pt);
                        else if (want3d)
                                point.z = 0.0;

                        ptarray_set_point4d(pa, i, &point);
                }
        }
        break;

        case SFCGAL_TYPE_TRIANGLE:
        {
                pa = ptarray_construct(want3d, 0, 4);

                for (i = 0; i < 4; i++)
                {
                        const sfcgal_geometry_t* pt = sfcgal_triangle_vertex(geom, (i%3));
                        point.x = sfcgal_point_x(pt);
                        point.y = sfcgal_point_y(pt);

                        if ( sfcgal_geometry_is_3d(geom))
                                point.z = sfcgal_point_z(pt);
                        else if (want3d)
                                point.z = 0.0;

                        ptarray_set_point4d(pa, i, &point);
                }
        }
        break;

        /* Other types should not be called directly ... */
        default:
                lwerror("ptarray_from_SFCGAL: Unknown Type");
                break;
        }
        return pa;
}

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