ptarray_to_SFCGAL()

static sfcgal_geometry_t * ptarray_to_SFCGAL ( const POINTARRAY *  pa, int  type  )

static

Definition at line 201 of file liblwgeom/lwgeom_sfcgal.c.

References POINTARRAY::flags, FLAGS_GET_Z, getPoint3dz_p(), LINETYPE, lwerror(), POINTARRAY::npoints, POINTTYPE, TRIANGLETYPE, POINT3DZ::x, POINT3DZ::y, and POINT3DZ::z.

Referenced by LWGEOM2SFCGAL().

{
        POINT3DZ point;
        int is_3d;
        uint32_t i;

        assert(pa);

        is_3d = FLAGS_GET_Z(pa->flags) != 0;

        switch (type)
        {
        case POINTTYPE:
        {
                getPoint3dz_p(pa, 0, &point);
                if (is_3d) return sfcgal_point_create_from_xyz(point.x, point.y, point.z);
                else       return sfcgal_point_create_from_xy(point.x, point.y);
        }
        break;

        case LINETYPE:
        {
                sfcgal_geometry_t* line = sfcgal_linestring_create();

                for (i = 0; i < pa->npoints; i++)
                {
                        getPoint3dz_p(pa, i, &point);
                        if (is_3d)
                        {
                                sfcgal_linestring_add_point(line,
                                                            sfcgal_point_create_from_xyz(point.x, point.y, point.z));
                        }
                        else
                        {
                                sfcgal_linestring_add_point(line,
                                                            sfcgal_point_create_from_xy(point.x, point.y));
                        }
                }

                return line;
        }
        break;

        case TRIANGLETYPE:
        {
                sfcgal_geometry_t* triangle = sfcgal_triangle_create();

                getPoint3dz_p(pa, 0, &point);
                if (is_3d) sfcgal_triangle_set_vertex_from_xyz(triangle, 0, point.x, point.y, point.z);
                else       sfcgal_triangle_set_vertex_from_xy (triangle, 0, point.x, point.y);

                getPoint3dz_p(pa, 1, &point);
                if (is_3d) sfcgal_triangle_set_vertex_from_xyz(triangle, 1, point.x, point.y, point.z);
                else       sfcgal_triangle_set_vertex_from_xy (triangle, 1, point.x, point.y);

                getPoint3dz_p(pa, 2, &point);
                if (is_3d) sfcgal_triangle_set_vertex_from_xyz(triangle, 2, point.x, point.y, point.z);
                else       sfcgal_triangle_set_vertex_from_xy (triangle, 2, point.x, point.y);

                return triangle;
        }
        break;

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

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