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crop.go
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crop.go
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package main
import (
"github.com/IronSublimate/gomapinfer2/common"
"flag"
"fmt"
"strconv"
"strings"
)
var (
inFname = flag.String("in", "in.graph", "input filename")
outFname = flag.String("out", "out.graph", "output filename")
rectStr = flag.String("rect", "", "e.g. 500,500,1000,1000")
originStr = flag.String("origin", "", "empty for no origin, e.g. 34,34 to convert to meters with origin")
)
func main() {
flag.Parse()
graph, err := common.ReadGraph(*inFname)
if err != nil {
panic(err)
}
graph.MakeBidirectional()
if *originStr != "" {
parts := strings.Split(*originStr, ",")
x, _ := strconv.ParseFloat(parts[0], 64)
y, _ := strconv.ParseFloat(parts[1], 64)
origin := common.Point{x, y}
graph.LonLatToMeters(origin)
}
parts := strings.Split(*rectStr, ",")
x1, _ := strconv.Atoi(parts[0])
y1, _ := strconv.Atoi(parts[1])
x2, _ := strconv.Atoi(parts[2])
y2, _ := strconv.Atoi(parts[3])
r := common.Rectangle{
common.Point{float64(x1), float64(y1)},
common.Point{float64(x2), float64(y2)},
}
oldBounds := graph.Bounds()
oldCount := len(graph.Edges)
graph = graph.GetSubgraphInRect(r)
fmt.Printf("cropped from bounds=%v, count=%d to bounds=%v, count=%d\n", oldBounds, oldCount, graph.Bounds(), len(graph.Edges))
if err := graph.Write(*outFname); err != nil {
panic(err)
}
}