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254
api/v1/common/shp/shp.go
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254
api/v1/common/shp/shp.go
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package shp
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import (
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"fmt"
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"github.com/tomchavakis/turf-go"
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"github.com/tiger1103/gfast/v3/api/v1/common/globe"
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"github.com/tiger1103/gfast/v3/api/v1/common/tool"
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"github.com/tiger1103/gfast/v3/api/v1/common/tool/shp"
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"github.com/tomchavakis/geojson/geometry"
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)
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const (
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DefaultColor = "#12f6f6"
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DefaultWidth = "2"
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)
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type Point struct {
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Lng float64 `json:"lng"`
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Lat float64 `json:"lat"`
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Alt float64 `json:"alt"` // 裝點更新 只更新這一個，更新立柱的高程時 這個字段不動
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Width float64 `json:"width"`
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Property
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}
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type Polyline struct {
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Positions []Point `json:"positions"`
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Width string `json:"width"`
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Color string `json:"color"`
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Alpha string `json:"alpha"`
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Degree string `json:"degree"`
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// Name string `json:"name"` // text
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// Property string `json:"property"`
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Range Box `json:"range"`
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Property
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}
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type Polygon struct {
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Positions []Point `json:"positions"`
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Color string `json:"color"`
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Range Box `json:"range"`
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}
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type Box struct {
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MinX float64 `json:"min_x"`
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MinY float64 `json:"min_y"`
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MaxX float64 `json:"max_x"`
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MaxY float64 `json:"max_y"`
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}
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type ShpObj struct {
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Points []Point `json:"points"`
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Polylines []Polyline `json:"polylines"`
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Polygons []Polygon `json:"polygons"`
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}
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type Detail struct {
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// Rotation []interfac e{} `json:"rotation"`
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Position Point `json:"position"`
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}
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type Degree struct {
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Position PointDegree `json:"position"`
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}
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type PointDegree struct {
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Lng float64 `json:"lng"`
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Lat float64 `json:"lat"`
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Alt float64 `json:"alt"` // 裝點更新 只更新這一個，更新立柱的高程時 這個字段不動
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Degree string `json:"degree"`
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}
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type Property struct {
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Name string `json:"name"`
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Beizhu string `json:"beizhu"`
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Tishi string `json:"tishi"`
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Height float64 `json:"height"` // 更新立柱的時 更新這個字段
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Difference float64 `json:"difference"` // height - alt
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SourceId string `json:"sourceId"`
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}
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/*读取shp数据*/
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func ReadShp(file string) (error, *ShpObj) {
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//if !globe.IS_OFFLINE_VERSION {
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// file = globe.SOURCE + file
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//}
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if !tool.PathExists(file) {
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return globe.GetErrors("资源不存在," + file), nil
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}
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shape, err := shp.Open(file)
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if err != nil {
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return err, nil
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}
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defer shape.Close()
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obj := ShpObj{
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Polygons: []Polygon{},
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Polylines: []Polyline{},
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Points: []Point{},
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}
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fields := shape.Fields()
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for shape.Next() {
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n, p := shape.Shape()
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name := ""
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beizhu := ""
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tishi := ""
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var O_LClr, O_LWidth, O_LAlpha /*, O_LType, O_SType, O_TType, O_Name, O_Comment*/ string
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O_LClr = DefaultColor
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O_LWidth = DefaultWidth
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// Text := ""
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for k, f := range fields {
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val := shape.ReadAttribute(n, k)
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bb := f.String()
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// // 记录本次判断开始前的名字
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// temp := name
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switch bb {
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// case "名称": // 方阵的名称
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// if len(name) == 0 {
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// name = val
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// }
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// case "TxtMemo": // 方阵的名称
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// if len(name) == 0 {
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// name = val
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// }
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case "name": // 方阵的名称
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if len(name) == 0 {
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name = val
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}
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// case "O_Name": // 方阵的名称
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// if len(name) == 0 {
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// name = val
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// }
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case "Text": // 方阵的名称
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if len(name) == 0 {
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name = val
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}
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case "备注": // 方阵的名称
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beizhu = val
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case "提示": // 方阵的名称
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tishi = val
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}
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// 如果本次循环后名字被清空，则替换为原本的名字
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// if name == "" {
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// name = temp
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// }
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// fmt.Printf("\t%v: %v\n", f, val)
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}
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// fmt.Println(O_Name, O_Comment, O_LClr, O_LWidth, O_LAlpha, O_LType, O_SType, O_TType, Shape_Leng, Text, TxtMemo)
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// fmt.Println("Text", Text)
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// fmt.Println("O_Name", O_Name)
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// fmt.Println("O_Comment", O_Comment)
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// fmt.Println("O_LType", O_LType)
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// fmt.Println("O_SType", O_SType)
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// fmt.Println("O_TType", O_TType)
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if p2, ok := p.(*shp.PolyLine); ok {
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polyline := Polyline{}
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polyline.Alpha = O_LAlpha
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polyline.Color = O_LClr
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polyline.Width = O_LWidth
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polyline.Name = name
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polyline.Range.MinX = p.BBox().MinX
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polyline.Range.MinY = p.BBox().MinY
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polyline.Range.MaxX = p.BBox().MaxX
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polyline.Range.MaxY = p.BBox().MaxX
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for _, po := range p2.Points {
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point := Point{Lng: po.X, Lat: po.Y}
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polyline.Positions = append(polyline.Positions, point)
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}
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obj.Polylines = append(obj.Polylines, polyline)
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} else if p3, ok2 := p.(*shp.Polygon); ok2 {
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polyline := Polyline{}
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polyline.Alpha = O_LAlpha
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polyline.Color = O_LClr
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polyline.Width = O_LWidth
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polyline.Name = name
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polyline.Beizhu = beizhu
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polyline.Tishi = tishi
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// polyline.Property = Property
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polyline.Range.MinX = p.BBox().MinX
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polyline.Range.MinY = p.BBox().MinY
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polyline.Range.MaxX = p.BBox().MaxX
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polyline.Range.MaxY = p.BBox().MaxX
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for _, po := range p3.Points {
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point := Point{Lng: po.X, Lat: po.Y}
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polyline.Positions = append(polyline.Positions, point)
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}
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obj.Polylines = append(obj.Polylines, polyline)
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// fmt.Println(p3.Points)
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} else if p3, ok3 := p.(*shp.Point); ok3 {
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point := Point{Lng: p3.X, Lat: p3.Y}
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point.Name = name
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point.Tishi = tishi
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point.Beizhu = beizhu
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obj.Points = append(obj.Points, point)
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} else if p3, ok2 := p.(*shp.PolygonZ); ok2 {
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polyline := Polyline{}
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polyline.Alpha = O_LAlpha
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polyline.Color = O_LClr
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polyline.Width = O_LWidth
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polyline.Name = name
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polyline.Beizhu = beizhu
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polyline.Tishi = tishi
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// polyline.Property = Property
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polyline.Range.MinX = p.BBox().MinX
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polyline.Range.MinY = p.BBox().MinY
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polyline.Range.MaxX = p.BBox().MaxX
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polyline.Range.MaxY = p.BBox().MaxX
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for _, po := range p3.Points {
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point := Point{Lng: po.X, Lat: po.Y}
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polyline.Positions = append(polyline.Positions, point)
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}
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obj.Polylines = append(obj.Polylines, polyline)
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// fmt.Println(p3.Points)
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} else if p3, ok3 := p.(*shp.PointZ); ok3 {
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point := Point{Lng: p3.X, Lat: p3.Y}
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point.Name = name
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point.Tishi = tishi
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point.Beizhu = beizhu
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obj.Points = append(obj.Points, point)
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} else {
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fmt.Println("其他类型")
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}
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}
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return nil, &obj
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}
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/*判断点是否被区域包含*/
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func PointInPolygon(point Point, positions []Point) (bool, error) {
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if len(positions) < 3 {
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return false, globe.GetErrors("坐标点数量不能小于3")
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}
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polygon := geometry.Polygon{}
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var pts []geometry.Point
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for _, position := range positions {
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pts = append(pts, geometry.Point{Lat: position.Lat, Lng: point.Lng})
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}
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// pts = append(pts, pts[len(pts)-1])
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LineString := geometry.LineString{}
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LineString.Coordinates = pts
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polygon.Coordinates = []geometry.LineString{LineString}
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return turf.PointInPolygon(geometry.Point{Lat: point.Lat, Lng: point.Lng}, polygon)
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}
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