Read shapfile with Multipolygon

[gonponlotus]

Hi everyone, how can i read shapefile with the geom is multipolygon and convert to array list polygon

thank you

[wangxin0814]

geomentry := (metaData.Shape).(*goShp.Polygon)

            coords := [][]geom.Coord{}
            for i := int32(0); i < geomentry.NumParts; i++ {
                coord := []geom.Coord{}

                if i == 0 {
                    if geomentry.NumParts > 1 {
                        for _, point := range geomentry.Points[0:geomentry.Parts[i+1]] {
                            coord = append(coord, []float64{point.X, point.Y})
                        }
                        coords = append(coords, coord)
                    } else { // 只有一个部分
                        for _, point := range geomentry.Points[0:] {
                            coord = append(coord, []float64{point.X, point.Y})
                        }
                        coords = append(coords, coord)
                    }
                } else if i == geomentry.NumParts-1 {
                    for _, point := range geomentry.Points[geomentry.Parts[i]:] {
                        coord = append(coord, []float64{point.X, point.Y})
                    }
                    coords = append(coords, coord)
                } else {
                    for _, point := range geomentry.Points[geomentry.Parts[i]:geomentry.Parts[i+1]] {
                        coord = append(coord, []float64{point.X, point.Y})
                    }
                    coords = append(coords, coord)
                }
            }

            polygon := geom.NewPolygon(geom.XY).MustSetCoords(coords).SetSRID(4326)