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svg.go
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svg.go
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package main
import (
"fmt"
"github.com/MattSPalmer/svgraphs"
"github.com/ajstarks/svgo"
"os"
"time"
)
var colors = []string{"red", "orange", "green", "teal", "blue", "purple", "maroon"}
func barGraph(cg CallGraph, fp string) error {
f, err := os.Create(fp)
if err != nil {
return err
}
defer f.Close()
dist, err := cg.Distribution()
if err != nil {
return err
}
output := make(map[string]int)
for k, v := range dist {
key := cg.Labels(k)
output[key] = len(v)
}
canvas := svg.New(f)
g, err := graphs.NewBarGraph(output)
if err != nil {
return err
}
canvas.Start(700, 500)
defer canvas.End()
g.Draw(canvas, 30, 30, 600, 400)
return nil
}
func durationStackGraph(w, h int, m map[string][]timeBlock, fp string) error {
f, err := os.Create(fp)
if err != nil {
return err
}
defer f.Close()
canvas := svg.New(f)
canvas.Start(w, h)
defer canvas.End()
rh := int((float64(h) - (10*float64(len(m)) + 60)) / float64(len(m)))
rh = rh - (rh % 30)
nextColor := colorer()
// canvas.Grid(0, 0, w, h, 30, "stroke-width:3;fill:black;opacity:10%")
var i int
for _, blocks := range m {
style := fmt.Sprintf("fill:%v", nextColor())
for _, b := range blocks {
start := w * (timeToMins(b.start) - 540) / 660
pixelW := w * int(b.Duration().Minutes()) / 660
canvas.Rect(start, i, pixelW, rh, style)
}
i += rh + 30
}
return nil
}
func mapCallTime(calls []CallRecord) (map[string][]timeBlock, error) {
m := make(map[string][]timeBlock)
dist, err := GraphByAgent(calls).Distribution()
if err != nil {
return nil, err
}
for k, v := range dist {
if k == -1 {
continue
}
b := make([]timeBlock, 0)
for _, call := range v {
b = append(b, *call.Interval())
}
name := agentsByID[k]
m[name] = b
}
return m, nil
}
func colorer() func() string {
i := -1
return func() string {
i += 1
return colors[i%len(colors)]
}
}
func callDensity(w, h int, calls []CallRecord, fp string) error {
f, err := os.Create(fp)
if err != nil {
return err
}
defer f.Close()
canvas := svg.New(f)
canvas.Start(w, h)
defer canvas.End()
canvas.Grid(0, 0, w, h, 30, "stroke-width:3;fill:black;opacity:10%")
density := make([]int, 1440)
for _, call := range calls {
a := timeToMins(call.Interval().start)
b := timeToMins(call.Interval().end)
for i := a; i < b-1; i++ {
density[i] += 1
}
}
density = density[539:1200]
for i := 0; i < len(density); i++ {
canvas.Rect(w*(i+1)/660+10, h-(30*density[i]), w/660, 30*density[i])
}
return nil
}
func timeToMins(t time.Time) int { return 60*t.Hour() + t.Minute() }
func minsToTime(i int) time.Time {
return time.Date(0, time.January, 1, (i%60)/60, i-(i%60), 0, 0, time.UTC)
}