ginger/gim/main.go

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package main
import (
"fmt"
"math/rand"
"os"
"strings"
"time"
"github.com/mediocregopher/ginger/gg"
"github.com/mediocregopher/ginger/gim/geo"
"github.com/mediocregopher/ginger/gim/terminal"
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)
// Leave room for:
// - Changing the "flow" direction
// - Absolute positioning of some/all vertices
// TODO
// - assign edges to "slots" on boxes
// - edge values
// - be able to draw circular graphs
// - audit all steps, make sure everything is deterministic
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const (
framerate = 10
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frameperiod = time.Second / time.Duration(framerate)
rounder = geo.Ceil
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)
func debugf(str string, args ...interface{}) {
if !strings.HasSuffix(str, "\n") {
str += "\n"
}
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fmt.Fprintf(os.Stderr, str, args...)
}
func mkGraph() (*gg.Graph, gg.Value) {
a := gg.NewValue("a")
aE0 := gg.NewValue("aE0")
aE1 := gg.NewValue("aE1")
aE2 := gg.NewValue("aE2")
aE3 := gg.NewValue("aE3")
b0 := gg.NewValue("b0")
b1 := gg.NewValue("b1")
b2 := gg.NewValue("b2")
b3 := gg.NewValue("b3")
oaE0 := gg.ValueOut(a, aE0)
oaE1 := gg.ValueOut(a, aE1)
oaE2 := gg.ValueOut(a, aE2)
oaE3 := gg.ValueOut(a, aE3)
g := gg.Null
g = g.AddValueIn(oaE0, b0)
g = g.AddValueIn(oaE1, b1)
g = g.AddValueIn(oaE2, b2)
g = g.AddValueIn(oaE3, b3)
c := gg.NewValue("c")
empty := gg.NewValue("")
jE := gg.JunctionOut([]gg.OpenEdge{
gg.ValueOut(b0, empty),
gg.ValueOut(b1, empty),
gg.ValueOut(b2, empty),
gg.ValueOut(b3, empty),
}, gg.NewValue("jE"))
g = g.AddValueIn(jE, c)
return g, c
}
//func mkGraph() *gg.Graph {
// g := gg.Null
// g = g.AddValueIn(gg.ValueOut(str("a"), str("e")), str("b"))
// return g
//}
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func main() {
rand.Seed(time.Now().UnixNano())
term := terminal.New()
term.Reset()
term.HideCursor()
g, start := mkGraph()
v := view{
g: g,
primFlowDir: geo.Right,
secFlowDir: geo.Down,
start: start,
center: geo.Zero.Midpoint(term.WindowSize(), rounder),
}
for range time.Tick(frameperiod) {
term.Reset()
v.draw(term)
term.Flush()
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}
}