Read shapfile with Multipolygon about go-shp

[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)