New defaults and return to queue

Signed-off-by: Martyn Ranyard <m@rtyn.berlin>

Makefile

@@ -5,10 +5,17 @@ LDFLAGS=-ldflags "-X main.buildDate=${BUILD}"
 .PHONY: build deps static
 
 build:
-	go build ${LDFLAGS}
+	go build ${LDFLAGS} -o ledcontroller-server cmd/ledcontroller-server/main.go
+
+emulator:
+	go build ${LDFLAGS} -o emulator cmd/emulator/main.go
 
 deps:
-	go get
+	cd cmd/ledcontroller-server ; go get ; cd ../..
 
+deps-emulator:
+	cd cmd/emulator ; go get ; cd ../..
+
+# Static only makes sense for the server
 static:
-	CGO_ENABLED=0 GOOS=linux go build ${LDFLAGS} -a -installsuffix cgo -o LEDController .
+	CGO_ENABLED=0 GOOS=linux go build ${LDFLAGS} -a -installsuffix cgo -o ledcontroller-server cmd/ledcontroller-server/main.go

build/ci/drone.yml

@@ -14,8 +14,8 @@ steps:
   - mkdir -p /go/src/git.martyn.berlin/martyn
   - ln -s /drone/src /go/src/git.martyn.berlin/martyn/LEDController
   - cd /go/src/git.martyn.berlin/martyn/LEDController
-  - go get
-  - go build
+  - make deps
+  - make
 
 - name: publish
   image: plugins/docker:18
@@ -54,8 +54,8 @@ steps:
   - mkdir -p /go/src/git.martyn.berlin/martyn
   - ln -s /drone/src /go/src/git.martyn.berlin/martyn/LEDController
   - cd /go/src/git.martyn.berlin/martyn/LEDController
-  - go get
-  - go build
+  - make deps
+  - make
 
 trigger:
   ref:

build/package/Dockerfile

@@ -1,12 +1,12 @@
 FROM golang@sha256:cee6f4b901543e8e3f20da3a4f7caac6ea643fd5a46201c3c2387183a332d989 AS builder
 RUN apk update && apk add --no-cache git make ca-certificates && update-ca-certificates
-COPY main.go /go/src/git.martyn.berlin/martyn/LEDController/
+COPY cmd /go/src/git.martyn.berlin/martyn/LEDController/cmd/
 COPY internal/ /go/src/git.martyn.berlin/martyn/LEDController/internal/
 COPY Makefile /go/src/git.martyn.berlin/martyn/LEDController/
 RUN cd /go/src/git.martyn.berlin/martyn/LEDController/; make deps ; make static
 
 FROM scratch
 COPY --from=builder /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/
-COPY --from=builder /go/src/git.martyn.berlin/martyn/LEDController /app/
+COPY --from=builder /go/src/git.martyn.berlin/martyn/LEDController/ledcontroller-server /app/
 WORKDIR /app
-CMD ["/app/LEDController"]
+CMD ["/app/ledcontroller-server"]

cmd/emulator/main.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"image/color"
+
+	"fyne.io/fyne"
+	"fyne.io/fyne/app"
+	"fyne.io/fyne/theme"
+	"fyne.io/fyne/widget"
+
+	fynewidget "git.martyn.berlin/martyn/LEDController/internal/fynewidget"
+
+	"log"
+)
+
+type tappableIcon struct {
+	widget.Icon
+}
+
+func newTappableIcon(res fyne.Resource) *tappableIcon {
+	icon := &tappableIcon{}
+	icon.ExtendBaseWidget(icon)
+	icon.SetResource(res)
+
+	return icon
+}
+
+func (t *tappableIcon) Tapped(_ *fyne.PointEvent) {
+	log.Println("I have been tapped")
+}
+
+func (t *tappableIcon) TappedSecondary(_ *fyne.PointEvent) {
+}
+
+func main() {
+	app := app.New()
+	w := app.NewWindow("Hello")
+	w.SetContent(widget.NewVBox(
+		widget.NewLabel("Hello Fyne!"),
+		newTappableIcon(theme.FyneLogo()),
+		fynewidget.NewOutputWidget(color.Black),
+		widget.NewButton("Quit", func() {
+			app.Quit()
+		}),
+	))
+
+	w.ShowAndRun()
+}

cmd/ledcontroller-server/main.go

@@ -0,0 +1,201 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"math"
+	"os"
+	"strconv"
+	"time"
+
+	patterns "git.martyn.berlin/martyn/LEDController/internal/patterns"
+	queue "git.martyn.berlin/martyn/LEDController/internal/queue"
+	remapping "git.martyn.berlin/martyn/LEDController/internal/remapping"
+	webserver "git.martyn.berlin/martyn/LEDController/internal/webserver"
+
+	"github.com/Hundemeier/go-sacn/sacn"
+)
+
+type RGBcolor = [3]byte
+
+var currentFrame [99][512]byte //TODO make dynamic
+var channels [99]chan<- [512]byte
+var sema = make(chan struct{}, 1) // a binary semaphore guarding currentFrame
+
+var currentEffect queue.QueueItem
+var globalEffectChannel = make(chan queue.QueueItem, 1024)
+var universeCount int = 0
+
+var overrideEffect queue.QueueItem
+var overrideFlag = make(chan queue.QueueItem, 1)
+var previousEffect queue.QueueItem
+
+func foreverLoop() {
+	for /*ever*/ {
+		time.Sleep(40 * time.Millisecond) //25fps
+		for u := 0; u < universeCount; u++ {
+			sema <- struct{}{} // acquire token
+			channels[u] <- currentFrame[u]
+			<-sema
+		}
+	}
+}
+
+func reduceBrightness(universe [512]byte, percentage int) [512]byte {
+	for i := range universe {
+		universe[i] = byte(float64(universe[i]) * (float64(percentage) / float64(100)))
+	}
+	return universe
+}
+
+func main() {
+	go func() {
+		var err error
+		listenPort := 5353
+		if os.Getenv("LISTEN_PORT") != "" {
+			listenPort, err = strconv.Atoi(os.Getenv("LISTEN_PORT"))
+			if err != nil {
+				listenPort = 5353
+			}
+		}
+		fmt.Printf("Starting webserver on port %d\n", listenPort)
+		webserver.HandleHTTP(globalEffectChannel, listenPort, overrideFlag)
+	}()
+
+	PanelIP := os.Getenv("PANEL_IP")
+	if PanelIP == "" {
+		PanelIP = "127.0.0.1"
+	}
+
+	PanelWidth, err := strconv.Atoi(os.Getenv("PANEL_WIDTH"))
+	if err != nil {
+		PanelWidth = 60
+	}
+	PanelHeight, err := strconv.Atoi(os.Getenv("PANEL_HEIGHT"))
+	if err != nil {
+		PanelHeight = 15
+	}
+
+	universeCount = int(math.Ceil(float64(PanelHeight*PanelWidth*3) / 510))
+	fmt.Printf("Universe count is %d\n", universeCount)
+
+	PanelBrightness, err := strconv.Atoi(os.Getenv("PANEL_BRIGHTNESS"))
+	if err != nil {
+		PanelBrightness = 100
+	}
+
+	//instead of "" you could provide an ip-address that the socket should bind to
+	trans, err := sacn.NewTransmitter("", [16]byte{1, 2}, "test")
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	//activates the universes
+	for i := 0; i < universeCount; i++ {
+		channels[i], err = trans.Activate(uint16(i + 1))
+		//deactivate the channel on exit
+		defer close(channels[i])
+		trans.SetMulticast(uint16(i+1), false) //this specific setup will not multicast on windows,
+		trans.SetDestinations(uint16(i+1), []string{PanelIP})
+	}
+
+	// Plasma for start frame
+	/*rearranged := reduceBrightness(remapping.SliceRearrange(PanelWidth, PanelHeight, true, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.PlasmaPanel(PanelWidth, PanelHeight, 40))), PanelBrightness)
+	for i := 0; i < universeCount; i++ {
+		currentFrame[i] = remapping.Slice512(rearranged[i])
+	}*/
+	var e queue.QueueItem
+	e.Effect = "red"
+	e.Duration = 40 * 50
+	globalEffectChannel <- e
+	e.Effect = "colour"
+	e.Duration = 40 * 10
+	e.SeedColour[0] = 0
+	e.SeedColour[1] = 255
+	e.SeedColour[2] = 0
+	globalEffectChannel <- e
+	e.Effect = "plasma"
+	e.Speed = 40
+	globalEffectChannel <- e
+	e.Effect = "queue"
+	overrideEffect = e
+	previousEffect.Effect = "queue"
+	go func() {
+		for /*ever*/ {
+			if len(overrideFlag) > 0 {
+				e = <-overrideFlag
+				if e.Effect == "queue" {
+					if previousEffect.Effect != "queue" {
+						fmt.Printf("Returning to queue : %s\n", previousEffect.Effect)
+						overrideEffect = e
+						currentEffect = previousEffect
+						previousEffect.Effect = "queue"
+						currentEffect = <-globalEffectChannel
+					}
+				} else {
+					fmt.Printf("Overriding with : %s\n", e.Effect)
+					if previousEffect.Effect == "queue" {
+						previousEffect = currentEffect
+					}
+					overrideEffect = e
+					currentEffect = e
+				}
+			}
+			if overrideEffect.Effect == "queue" {
+				if currentEffect.Duration > 0 {
+					currentEffect.Duration -= 40
+				} else {
+					if len(globalEffectChannel) > 0 {
+						previousEffect.Effect = "queue"
+						lastEffect := currentEffect
+						currentEffect = <-globalEffectChannel
+						if lastEffect != currentEffect {
+							fmt.Printf("New effect selected : %s\n", currentEffect.Effect)
+						}
+					}
+				}
+			}
+			var rearranged [][]byte
+			switch currentEffect.Effect {
+			case "line":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, true, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.ZigZag(PanelWidth, PanelHeight)))
+			case "plasma":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, true, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.PlasmaPanel(PanelWidth, PanelHeight, currentEffect.Speed)))
+			case "red":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, false, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.RedPanel(PanelWidth, PanelHeight)))
+			case "random":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, false, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.RandomColourPanel(PanelWidth, PanelHeight, currentEffect.Speed)))
+			case "linearplasma":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, false, patterns.LinearPlasma(PanelWidth*PanelHeight))
+			case "gradientred":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, false, patterns.Gradient(255, 0, 0, 0, 0, 255, 0, PanelWidth*PanelHeight))
+			case "sine":
+				var black patterns.RGBcolor
+				var red patterns.RGBcolor
+				red[0] = 255
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, true, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.Sinewave(PanelWidth, PanelHeight, black, red, currentEffect.Speed)))
+			case "sinechase":
+				var black patterns.RGBcolor
+				var red patterns.RGBcolor
+				red[0] = 255
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, true, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.SineChase(PanelWidth, PanelHeight, black, red, currentEffect.Speed)))
+			case "plasmapulse":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, false, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.PlasmaColourPanel(PanelWidth, PanelHeight, currentEffect.Speed)))
+			case "colour":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, false, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.FillPanel(PanelWidth, PanelHeight, currentEffect.SeedColour[0], currentEffect.SeedColour[1], currentEffect.SeedColour[2])))
+			case "fade":
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, true, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.GradientPanel(PanelWidth, PanelHeight, currentEffect.SeedColour, currentEffect.SecondColour)))
+			default:
+				rearranged = remapping.SliceRearrange(PanelWidth, PanelHeight, false, remapping.XYGridToLinear(PanelWidth, PanelHeight, patterns.FillPanel(PanelWidth, PanelHeight, 128, 0, 128)))
+			}
+			//rearranged := remapping.SliceRearrange(PanelWidth,PanelHeight,true,linearPlasma(PanelWidth*PanelHeight))
+			sema <- struct{}{} // acquire token
+			for i := 0; i < universeCount; i++ {
+				currentFrame[i] = reduceBrightness(remapping.Slice512(rearranged[i]), PanelBrightness)
+			}
+			<-sema
+			time.Sleep(40 * time.Millisecond)
+		}
+	}()
+	foreverLoop()
+}

deployments/kubernetes/deploy.yaml

@@ -3,7 +3,7 @@ kind: Deployment
 metadata:
   labels:
     run: LEDController
-  name: LEDController
+  name: ledcontroller
 spec:
   progressDeadlineSeconds: 600
   replicas: 1
@@ -23,9 +23,20 @@ spec:
         run: LEDController
     spec:
       containers:
-      - image: imartyn/LEDController:devel
-        imagePullPolicy: IfNotPresent
-        name: LEDController
+      - env:
+        - name: LISTEN_PORT
+          value: "5353"
+        - name: PANEL_IP
+          value: "192.168.1.139"
+        - name: PANEL_WIDTH
+          value: "68"
+        - name: PANEL_HEIGHT
+          value: "4"
+        - name: PANEL_BRIGHTNESS
+          value: "10"
+        image: imartyn/ledcontroller:0.0-linux-amd64
+        imagePullPolicy: Always
+        name: ledcontroller
         ports:
         - name: web
           containerPort: 5353

internal/fynewidget/fynewidget.go

@@ -0,0 +1,45 @@
+package fynewidget
+
+import (
+	"image/color"
+
+	"fyne.io/fyne/widget"
+
+	"fyne.io/fyne"
+)
+
+// OutputWidget describes a coloured rectangle primitive in a Fyne canvas
+type OutputWidget struct {
+	widget.BaseWidget
+
+	CreateRenderer() WidgetRenderer
+}
+
+// NewOutputWidget returns a new OutputWidget instance
+func NewOutputWidget(color color.Color) *OutputWidget {
+	return &OutputWidget{}
+}
+
+// MinSize of panel
+func (l *OutputWidget) MinSize() fyne.Size {
+	return fyne.NewSize(320, 200)
+}
+
+// CreateRenderer gets the widget renderer
+func (t *Table) CreateRenderer() fyne.WidgetRenderer {
+	return widget.new
+}
+
+/*
+// NewOutputWidget Creates a new widget for outputting the patterns recieved over UDP
+func NewOutputWidget() *fyne.Container {
+	theBox := NewOutputWidget(theme.PrimaryColor())
+
+	theBox.Resize(fyne.NewSize(320, 200))
+
+	c := fyne.NewContainer(theBox)
+	c.Resize(fyne.NewSize(320, 200))
+
+	return c
+}
+*/

internal/patterns/font.go

@@ -0,0 +1,138 @@
+package patterns
+
+var FontData = [126][]byte{{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},
+	{0x00, 0x00, 0x00},             // 32 ' '
+	{0x5f},                         // 33 '!'
+	{0x07, 0x00, 0x07},             // 34 '"'
+	{0x14, 0x3e, 0x14, 0x3e, 0x14}, // 35 '#'
+	{0x24, 0x4a, 0xcb, 0x52, 0x24}, // 36 '$'
+	{0x22, 0x15, 0x2a, 0x54, 0x22}, // 37 '%'
+	{0x36, 0x49, 0x55, 0x22, 0x50}, // 38 '&'
+	{0x07},                         // 39 '''
+	{0x1c, 0x22, 0x41},             // 40 '('
+	{0x41, 0x22, 0x1c},             // 41 ')'
+	{0x14, 0x08, 0x3e, 0x08, 0x14}, // 42 '*'
+	{0x08, 0x08, 0x3e, 0x08, 0x08}, // 43 '+'
+	{0xc0, 0x60},                   // 44 ','
+	{0x08, 0x08, 0x08},             // 45 '-'
+	{0x60, 0x60},                   // 46 '.'
+	{0x20, 0x10, 0x08, 0x04, 0x02}, // 47 '/'
+	{0x3e, 0x51, 0x49, 0x45, 0x3e}, // 48 '0'
+	{0x42, 0x42, 0x7f, 0x40, 0x40}, // 49 '1'
+	{0x42, 0x61, 0x51, 0x49, 0x46}, // 50 '2'
+	{0x22, 0x41, 0x49, 0x49, 0x36}, // 51 '3'
+	{0x18, 0x14, 0x52, 0x7f, 0x50}, // 52 '4'
+	{0x27, 0x45, 0x45, 0x45, 0x39}, // 53 '5'
+	{0x3e, 0x45, 0x45, 0x45, 0x38}, // 54 '6'
+	{0x01, 0x01, 0x71, 0x09, 0x07}, // 55 '7'
+	{0x36, 0x49, 0x49, 0x49, 0x36}, // 56 '8'
+	{0x0e, 0x51, 0x51, 0x51, 0x3e}, // 57 '9'
+	{0x66, 0x66},                   // 58 ':'
+	{0xc6, 0x66},                   // 59 ';'
+	{0x08, 0x14, 0x22, 0x41},       // 60 '<'
+	{0x14, 0x14, 0x14, 0x14, 0x14}, // 61 '='
+	{0x41, 0x22, 0x14, 0x08},       // 62 '>'
+	{0x02, 0x01, 0x51, 0x09, 0x06}, // 63 '?'
+	{0x3e, 0x41, 0x5d, 0x55, 0x5e}, // 64 '@'
+	{0x7c, 0x12, 0x11, 0x12, 0x7c}, // 65 'A'
+	{0x7f, 0x49, 0x49, 0x49, 0x36}, // 66 'B'
+	{0x3e, 0x41, 0x41, 0x41, 0x22}, // 67 'C'
+	{0x7f, 0x41, 0x41, 0x41, 0x3e}, // 68 'D'
+	{0x7f, 0x49, 0x49, 0x49, 0x41}, // 69 'E'
+	{0x7f, 0x09, 0x09, 0x09, 0x01}, // 70 'F'
+	{0x3e, 0x41, 0x41, 0x49, 0x3a}, // 71 'G'
+	{0x7f, 0x08, 0x08, 0x08, 0x7f}, // 72 'H'
+	{0x41, 0x41, 0x7f, 0x41, 0x41}, // 73 'I'
+	{0x30, 0x40, 0x40, 0x40, 0x3f}, // 74 'J'
+	{0x7f, 0x08, 0x14, 0x22, 0x41}, // 75 'K'
+	{0x7f, 0x40, 0x40, 0x40, 0x40}, // 76 'L'
+	{0x7f, 0x02, 0x0c, 0x02, 0x7f}, // 77 'M'
+	{0x7f, 0x02, 0x04, 0x08, 0x7f}, // 78 'N'
+	{0x3e, 0x41, 0x41, 0x41, 0x3e}, // 79 'O'
+	{0x7f, 0x09, 0x09, 0x09, 0x06}, // 80 'P'
+	{0x3e, 0x41, 0x61, 0x41, 0xbe}, // 81 'Q'
+	{0x7f, 0x09, 0x09, 0x09, 0x76}, // 82 'R'
+	{0x26, 0x49, 0x49, 0x49, 0x32}, // 83 'S'
+	{0x01, 0x01, 0x7f, 0x01, 0x01}, // 84 'T'
+	{0x3f, 0x40, 0x40, 0x40, 0x3f}, // 85 'U'
+	{0x07, 0x18, 0x60, 0x18, 0x07}, // 86 'V'
+	{0x7f, 0x20, 0x18, 0x20, 0x7f}, // 87 'W'
+	{0x63, 0x14, 0x08, 0x14, 0x63}, // 88 'X'
+	{0x07, 0x08, 0x70, 0x08, 0x07}, // 89 'Y'
+	{0x61, 0x51, 0x49, 0x45, 0x43}, // 90 'Z'
+	{0x7f, 0x41},                   // 91 '['
+	{0x02, 0x04, 0x08, 0x10, 0x20}, // 92 '\'
+	{0x41, 0x7f},                   // 93 ']'
+	{0x04, 0x02, 0x01, 0x02, 0x04}, // 94 '^'
+	{0x80, 0x80, 0x80, 0x80, 0x80}, // 95 '_'
+	{0x01, 0x02},                   // 96 '`'
+	{0x20, 0x54, 0x54, 0x78},       // 97 'a'
+	{0x7f, 0x44, 0x44, 0x38},       // 98 'b'
+	{0x38, 0x44, 0x44, 0x28},       // 99 'c'
+	{0x38, 0x44, 0x44, 0x7f},       // 100 'd'
+	{0x38, 0x54, 0x54, 0x58},       // 101 'e'
+	{0x08, 0x7e, 0x09, 0x02},       // 102 'f'
+	{0x18, 0xa4, 0xa4, 0x7c},       // 103 'g'
+	{0x7f, 0x04, 0x04, 0x78},       // 104 'h'
+	{0x44, 0x7d, 0x40},             // 105 'i'
+	{0x84, 0x7d},                   // 106 'j'
+	{0x7f, 0x10, 0x28, 0x44},       // 107 'k'
+	{0x41, 0x7f, 0x40},             // 108 'l'
+	{0x7c, 0x04, 0x7c, 0x04, 0x78}, // 109 'm'
+	{0x7c, 0x08, 0x04, 0x78},       // 110 'n'
+	{0x38, 0x44, 0x44, 0x38},       // 111 'o'
+	{0xfc, 0x24, 0x24, 0x18},       // 112 'p'
+	{0x18, 0x24, 0x24, 0xfc},       // 113 'q'
+	{0x7c, 0x08, 0x04, 0x08},       // 114 'r'
+	{0x48, 0x54, 0x54, 0x24},       // 115 's'
+	{0x04, 0x3f, 0x44},             // 116 't'
+	{0x3c, 0x40, 0x20, 0x7c},       // 117 'u'
+	{0x3c, 0x40, 0x3c},             // 118 'v'
+	{0x3c, 0x40, 0x3c, 0x40, 0x3c}, // 119 'w'
+	{0x6c, 0x10, 0x6c},             // 120 'x'
+	{0x1c, 0xa0, 0xa0, 0x7c},       // 121 'y'
+	{0x64, 0x54, 0x4c},             // 122 'z'
+	{0x08, 0x36, 0x41},             // 123 '{'
+	{0x7f},                         // 124 '|'
+	{0x41, 0x36, 0x08},             // 125 '}'
+	{0x08, 0x04, 0x08, 0x04}}       // 126 '~'
+
+func Letter(whichLetter rune) [][]RGBcolor {
+	w := 8
+	h := 8
+	grid := make([][]RGBcolor, w)
+	for i := 0; i < w; i++ {
+		grid[i] = make([]RGBcolor, h)
+	}
+	//index := int(whichLetter)
+	return grid
+}

internal/patterns/plasma.go

@@ -1,9 +1,15 @@
 package patterns
 
-import "math"
+import (
+	"math"
+)
 
 type RGBcolor = [3]byte
 
+func floatColorToIntColor(val float64) byte {
+	return byte(val*256 - 0.5)
+}
+
 func plasmaRGBFromVal(val byte) (byte, byte, byte) {
 	var r byte
 	var g byte
@@ -24,7 +30,6 @@ func plasmaRGBFromVal(val byte) (byte, byte, byte) {
 	return r, g, b
 }
 
-
 func LinearPlasma(l int) []byte {
 	line := make([]byte, l*3)
 	for i := 0; i < l*3; i += 3 {
@@ -37,26 +42,67 @@ func LinearPlasma(l int) []byte {
 	return line
 }
 
-var offset float64 = 0.5
+func linearFromVal(val byte) (byte, byte, byte) {
+	var r byte = val
+	var g byte = 0
+	var b byte = 0
+	return r, g, b
+}
+
+func positiveModF(val float64) float64 {
+	_, val = math.Modf(val)
+	if val < 0 {
+		return val + 1.0
+	}
+	return val
+}
+
+func colorPlasmaFromFloatVal(val float64) (byte, byte, byte) {
+	var r byte
+	var g byte
+	var b byte
+	val = positiveModF(val) * 3.0
+	if val < 1.0 {
+		r = floatColorToIntColor(val)
+		g = floatColorToIntColor(1.0 - val)
+		b = 0
+	} else if val < 2.0 {
+		b = floatColorToIntColor(val - 1.0)
+		r = floatColorToIntColor(1.0 - (val - 1.0))
+		g = 0.0
+	} else {
+		g = floatColorToIntColor(val - 2.0)
+		b = floatColorToIntColor(1.0 - (val - 2.0))
+		r = 0.0
+	}
+	return r, g, b
+}
+
+var palletteOffset float64 = 0.0
 
 func PlasmaPanel(w int, h int, speed uint16) [][]RGBcolor {
 	grid := make([][]RGBcolor, w)
 	for i := 0; i < w; i++ {
 		grid[i] = make([]RGBcolor, h)
 	}
-	scale := math.Pi * 2.0 / float64(w)
-	step := float64(5 * speed / 40)
-	offset -= step
-	if offset < 0 {
-		offset += 1.0
+
+	// pbrook didn't say what DT is for... so it resolves to 0.05
+	palletteOffset -= 0.05 / 1.0
+	if palletteOffset < 0 {
+		palletteOffset += 1.0
 	}
+
+	offset := 0.5 // center offset
+	scaleW := math.Pi * 2.0 / float64(w)
+	scaleH := math.Pi * 2.0 / float64(h)
+
 	for y := 0; y < h; y++ {
 		for x := 0; x < w; x++ {
-			u := math.Cos((float64(x) + offset) * scale)
-			v := math.Cos((float64(y) + offset) * scale)
-			w := math.Cos((float64(w) + offset) * scale)
-			e := (u + v + w + 3.0) / 6.0
-			r, g, b := plasmaRGBFromVal(byte((offset + e) * 255))
+			u := math.Cos((float64(x) + offset) * scaleW)
+			v := math.Cos((float64(y) + offset) * scaleH)
+			j := math.Cos(offset * scaleW) // 2D - No Z
+			e := (u + v + j + 3.0) / 6.0
+			r, g, b := colorPlasmaFromFloatVal(palletteOffset + e)
 			var rgb [3]byte
 			rgb[0] = r
 			rgb[1] = g
@@ -65,4 +111,4 @@ func PlasmaPanel(w int, h int, speed uint16) [][]RGBcolor {
 		}
 	}
 	return grid
-}
+}

internal/webserver/webserver.go

@@ -1,17 +1,17 @@
 package webserver
 
 import (
-
+	queue "git.martyn.berlin/martyn/LEDController/internal/queue"
 	"github.com/gorilla/handlers"
 	"github.com/gorilla/mux"
-	queue "git.martyn.berlin/martyn/LEDController/internal/queue"
 	"golang.org/x/image/colornames"
 
 	"fmt"
 	"net/http"
 	"os"
-	"time"
 	"strconv"
+	"strings"
+	"time"
 )
 
 func HealthHandler(response http.ResponseWriter, request *http.Request) {
@@ -29,13 +29,14 @@ func RootHandler(response http.ResponseWriter, request *http.Request) {
 	fmt.Fprint(response, "Not implemented")
 }
 
-var globalQueue chan queue.QueueItem;
+var globalQueue chan queue.QueueItem
+var overrideFlag chan queue.QueueItem
 
 func PatternHandler(response http.ResponseWriter, request *http.Request) {
 	vars := mux.Vars(request)
 	response.Header().Add("Content-type", "text/plain")
 	var e queue.QueueItem
-	e.Effect = vars["pattern"]
+	e.Effect = strings.ToLower(vars["pattern"])
 	_, found := vars["duration"]
 	if found {
 		i, _ := strconv.Atoi(vars["duration"])
@@ -50,12 +51,17 @@ func PatternHandler(response http.ResponseWriter, request *http.Request) {
 	} else {
 		e.Speed = 40
 	}
-	globalQueue <- e
+	if vars["override"] == "true" {
+		overrideFlag <- e
+	} else {
+		globalQueue <- e
+	}
 	fmt.Fprint(response, "OKAY")
 }
 
 func ColourHandler(response http.ResponseWriter, request *http.Request) {
 	vars := mux.Vars(request)
+	fmt.Printf("Vars : %v\n", vars)
 	response.Header().Add("Content-type", "text/plain")
 	var e queue.QueueItem
 	e.Effect = "colour"
@@ -67,8 +73,8 @@ func ColourHandler(response http.ResponseWriter, request *http.Request) {
 		e.Duration = 5000
 	}
 	var c queue.RGBcolor
-	for cn, cv := range(colornames.Map) {
-		if cn == vars["name"] {
+	for cn, cv := range colornames.Map {
+		if cn == strings.ToLower(vars["name"]) {
 			c[0] = cv.R
 			c[1] = cv.G
 			c[2] = cv.B
@@ -76,6 +82,11 @@ func ColourHandler(response http.ResponseWriter, request *http.Request) {
 	}
 	e.SeedColour = c
 	globalQueue <- e
+	if vars["override"] == "true" {
+		overrideFlag <- e
+	} else {
+		globalQueue <- e
+	}
 	fmt.Fprint(response, "OKAY")
 }
 
@@ -92,49 +103,67 @@ func FadeHandler(response http.ResponseWriter, request *http.Request) {
 		e.Duration = 5000
 	}
 	var c queue.RGBcolor
-	for cn, cv := range(colornames.Map) {
-		if cn == vars["namefrom"] {
+	for cn, cv := range colornames.Map {
+		if cn == strings.ToLower(vars["namefrom"]) {
 			c[0] = cv.R
 			c[1] = cv.G
 			c[2] = cv.B
 		}
 	}
 	e.SeedColour = c
-	for cn, cv := range(colornames.Map) {
-		if cn == vars["nameto"] {
+	for cn, cv := range colornames.Map {
+		if cn == strings.ToLower(vars["nameto"]) {
 			c[0] = cv.R
 			c[1] = cv.G
 			c[2] = cv.B
 		}
 	}
 	e.SecondColour = c
-	globalQueue <- e
+	if vars["override"] == "true" {
+		overrideFlag <- e
+	} else {
+		globalQueue <- e
+	}
 	fmt.Fprint(response, "OKAY")
 }
 
-func HandleHTTP(queueChannel chan queue.QueueItem) {
+func ResumeHandler(response http.ResponseWriter, request *http.Request) {
+	response.Header().Add("Content-type", "text/plain")
+	var e queue.QueueItem
+	e.Effect = "queue"
+	overrideFlag <- e
+	fmt.Fprint(response, "OKAY")
+}
+
+func HandleHTTP(queueChannel chan queue.QueueItem, Port int, overrideChannel chan queue.QueueItem) {
 	globalQueue = queueChannel
+	overrideFlag = overrideChannel
 	r := mux.NewRouter()
 	loggedRouter := handlers.LoggingHandler(os.Stdout, r)
 	r.NotFoundHandler = http.HandlerFunc(NotFoundHandler)
 	r.HandleFunc("/", RootHandler)
 	r.HandleFunc("/healthz", HealthHandler)
-	r.HandleFunc("/pattern/{pattern}", PatternHandler)
+	r.HandleFunc("/pattern/{pattern}/override={override}", PatternHandler)
+	r.HandleFunc("/pattern/{pattern}/", PatternHandler)
 	r.HandleFunc("/pattern/{pattern}/{duration}", PatternHandler)
 	r.HandleFunc("/pattern/{pattern}/{duration}/{speed}", PatternHandler)
 	r.HandleFunc("/colour/{name}", ColourHandler)
+	r.HandleFunc("/colour/{name}/override={override}", ColourHandler)
 	r.HandleFunc("/colour/{name}/{duration}", ColourHandler)
 	r.HandleFunc("/color/{name}", ColourHandler)
+	r.HandleFunc("/color/{name}/override={override}", ColourHandler)
 	r.HandleFunc("/color/{name}/{duration}", ColourHandler)
 	r.HandleFunc("/fade/{namefrom}/{nameto}", FadeHandler)
+	r.HandleFunc("/fade/{namefrom}/{nameto}/override={override}", FadeHandler)
 	r.HandleFunc("/fade/{namefrom}/{nameto}/{duration}", FadeHandler)
+	r.HandleFunc("/resumequeue", ResumeHandler)
 	http.Handle("/", r)
 	srv := &http.Server{
 		Handler:      loggedRouter,
-		Addr:         "0.0.0.0:5353",
+		Addr:         "0.0.0.0:" + strconv.Itoa(Port),
 		WriteTimeout: 15 * time.Second,
 		ReadTimeout:  15 * time.Second,
 	}
-	fmt.Println("Listening on 0.0.0.0:5353")
+	fmt.Printf("Listening on 0.0.0.0:%d", Port)
 	srv.ListenAndServe()
 }

main.go

@@ -1,127 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"time"
-
-	webserver "git.martyn.berlin/martyn/LEDController/internal/webserver"
-	queue "git.martyn.berlin/martyn/LEDController/internal/queue"
-	remapping "git.martyn.berlin/martyn/LEDController/internal/remapping"
-	patterns "git.martyn.berlin/martyn/LEDController/internal/patterns"
-
-	"github.com/Hundemeier/go-sacn/sacn"
-)
-
-type RGBcolor = [3]byte
-
-var currentFrame [2][512]byte
-var channels [2]chan<-[512]byte 
-var sema = make(chan struct{}, 1) // a binary semaphore guarding currentFrame
-
-var currentEffect queue.QueueItem;
-var globalEffectChannel = make(chan queue.QueueItem, 1024)
-
-func foreverLoop() {
-	for /*ever*/ {
-		time.Sleep(40 * time.Millisecond) //25fps
-		for u := 0; u < 2; u++ {
-			sema <- struct{}{} // acquire token
-			channels[u] <- currentFrame[u]
-			<- sema
-		}
-	}
-}
-
-func reduceBrightness(universe [512]byte, percentage int) [512]byte{
-	for i := range(universe) {
-		universe[i] = byte(float64(universe[i]) * (float64(percentage) / float64(100)))
-	}
-	return universe
-}
-
-func main() {
-	go func() {
-		fmt.Printf("Starting webserver on port %s\n", "5353")
-		webserver.HandleHTTP(globalEffectChannel)
-	}()
-	//instead of "" you could provide an ip-address that the socket should bind to
-	trans, err := sacn.NewTransmitter("", [16]byte{1, 2}, "test")
-	if err != nil {
-		log.Fatal(err)
-	}
-
-	//activates the universes
-	for i := 0; i < 2; i++ {
-		channels[i], err =  trans.Activate(uint16(i+1))
-		//deactivate the channel on exit
-		defer close(channels[i])
-		trans.SetMulticast(uint16(i+1), false) //this specific setup will not multicast on windows,
-		trans.SetDestinations(uint16(i+1), []string{"192.168.1.139"})
-	}
-
-	// Plasma for start frame
-	rearranged := remapping.SliceRearrange(68, 4, true, remapping.XYGridToLinear(68, 4, patterns.PlasmaPanel(68, 4, 40)))
-	currentFrame[0] = remapping.Slice512(rearranged[0])
-	currentFrame[1]	= remapping.Slice512(rearranged[1])
-	var e queue.QueueItem
-	e.Effect = "red"
-	e.Duration = 40 * 50
-	globalEffectChannel <- e
-	e.Effect = "plasma"
-	e.Duration = 0
-	e.Speed = 40
-	globalEffectChannel <- e
-
-	go func() {
-		for /*ever*/ {
-			if currentEffect.Duration > 0 {
-				currentEffect.Duration -= 40
-			} else {
-				if len(globalEffectChannel) > 0 {
-					currentEffect = <- globalEffectChannel
-				}
-			}
-			var rearranged [][]byte
-			switch currentEffect.Effect {
-				case "line":
-					rearranged = remapping.SliceRearrange(68, 4, true, remapping.XYGridToLinear(68, 4, patterns.ZigZag(68, 4)))
-				case "plasma":
-					rearranged = remapping.SliceRearrange(68, 4, true, remapping.XYGridToLinear(68, 4, patterns.PlasmaPanel(68, 4, currentEffect.Speed)))
-				case "red":
-					rearranged = remapping.SliceRearrange(68, 4, false, remapping.XYGridToLinear(68, 4, patterns.RedPanel(68,4)))
-				case "random":
-					rearranged = remapping.SliceRearrange(68, 4, false, remapping.XYGridToLinear(68, 4, patterns.RandomColourPanel(68,4,currentEffect.Speed)))
-				case "linearplasma":
-					rearranged = remapping.SliceRearrange(68, 4, false, patterns.LinearPlasma(68*4))
-				case "gradientred":
-					rearranged = remapping.SliceRearrange(68, 4, false, patterns.Gradient(255, 0, 0, 0, 0, 255, 0, 68*4))
-				case "sine":
-					var black patterns.RGBcolor
-					var red patterns.RGBcolor
-					red[0] = 255
-					rearranged = remapping.SliceRearrange(68, 4, true, remapping.XYGridToLinear(68, 4, patterns.Sinewave(68, 4, black, red, currentEffect.Speed)))
-				case "sinechase":
-					var black patterns.RGBcolor
-					var red patterns.RGBcolor
-					red[0] = 255
-					rearranged = remapping.SliceRearrange(68, 4, true, remapping.XYGridToLinear(68, 4, patterns.SineChase(68, 4, black, red, currentEffect.Speed)))
-				case "plasmapulse":
-					rearranged = remapping.SliceRearrange(68, 4, false, remapping.XYGridToLinear(68, 4, patterns.PlasmaColourPanel(68,4, currentEffect.Speed)))
-				case "colour":
-					rearranged = remapping.SliceRearrange(68, 4, false, remapping.XYGridToLinear(68, 4, patterns.FillPanel(68,4, currentEffect.SeedColour[0], currentEffect.SeedColour[1], currentEffect.SeedColour[2])))
-				case "fade":
-					rearranged = remapping.SliceRearrange(68, 4, true, remapping.XYGridToLinear(68, 4, patterns.GradientPanel(68,4, currentEffect.SeedColour, currentEffect.SecondColour)))
-			    default:
-					rearranged = remapping.SliceRearrange(68, 4, false, remapping.XYGridToLinear(68, 4, patterns.FillPanel(68,4, 128,0,128)))
-			}
-			//rearranged := remapping.SliceRearrange(68,4,true,linearPlasma(68*4))
-			sema <- struct{}{} // acquire token
-			currentFrame[0] = reduceBrightness(remapping.Slice512(rearranged[0]),10)
-			currentFrame[1]	= reduceBrightness(remapping.Slice512(rearranged[1]),10)
-			<- sema
-			time.Sleep(40 * time.Millisecond)
-		}
-	}()
-	foreverLoop();
-}