services

package

v1.3.2 Latest Latest Go to latest Published: Nov 14, 2025 License: GPL-3.0 Imports: 10 Imported by: 0

Details

Valid go.mod file
Redistributable license
Tagged version
Stable version
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Repository

github.com/GrainArc/SouceMap

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Documentation ¶

Overview ¶

services/track_service.go

Constants ¶

This section is empty.

Variables ¶

This section is empty.

Functions ¶

This section is empty.

Types ¶

type Edge ¶ added in v1.3.2

type Edge struct {
	ID         int
	From       *Node
	To         *Node
	LineString orb.LineString
	Cost       float64
}

Edge 表示图中的边

type Graph ¶ added in v1.3.2

type Graph struct {
	Nodes map[string]*Node
	Edges []*Edge
}

Graph 表示路网图

type Item ¶ added in v1.3.2

type Item struct {
	// contains filtered or unexported fields
}

优先队列实现

type Node ¶ added in v1.3.2

type Node struct {
	ID    string
	Point orb.Point
	Edges []*Edge
}

Node 表示图中的节点

type PriorityQueue ¶ added in v1.3.2

type PriorityQueue []*Item

func (PriorityQueue) Len ¶ added in v1.3.2

func (pq PriorityQueue) Len() int

func (PriorityQueue) Less ¶ added in v1.3.2

func (pq PriorityQueue) Less(i, j int) bool

func (*PriorityQueue) Pop ¶ added in v1.3.2

func (pq *PriorityQueue) Pop() interface{}

func (*PriorityQueue) Push ¶ added in v1.3.2

func (pq *PriorityQueue) Push(x interface{})

func (PriorityQueue) Swap ¶ added in v1.3.2

func (pq PriorityQueue) Swap(i, j int)

type SplitResult ¶ added in v1.3.2

type SplitResult struct {
	Feature      *geojson.Feature
	SplitPoint   orb.Point
	SegmentIndex int     // 在哪个线段上打断
	T            float64 // 投影参数
}

SplitResult 存储线段打断的结果

type TrackService ¶

type TrackService struct{}

func NewTrackService ¶

func NewTrackService() *TrackService

func (*TrackService) CalculateShortestPath ¶

func (s *TrackService) CalculateShortestPath(
	ctx context.Context,
	linesGeoJSON *geojson.FeatureCollection,
	startPoint []float64,
	endPoint []float64,
) (*geojson.FeatureCollection, error)

func (*TrackService) FindNearestPointOnLines ¶ added in v1.3.2

func (s *TrackService) FindNearestPointOnLines(
	ctx context.Context,
	linesGeoJSON *geojson.FeatureCollection,
	targetPoint []float64,
	maxDistance float64,
) (snappedPoint []float64, distance float64, lineID int, err error)

FindNearestPointOnLines 修改签名，添加 maxDistance 参数

func (*TrackService) GetAndBreakGeometries ¶

func (s *TrackService) GetAndBreakGeometries(
	ctx context.Context,
	layerNames []string,
	bbox geojson.FeatureCollection,
) (*geojson.FeatureCollection, error)

Source Files ¶

View all Source files

track_service.go

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