add gradient and random effect.

cmd/bustest/main.go

@@ -55,27 +55,15 @@ func main() {
 
 	time.Sleep(time.Millisecond)
 
+	for i, id := range []string{"40e5", "dead", "beef", "cafe", "1337"} {
 		bus.RunEvent(events.HardwareState{
-		ID:           "nanoleaf:10.80.1.11:40e5",
-		InternalName: "Hexagon 6",
-		SupportFlags: device.SFlagPower | device.SFlagColor | device.SFlagIntensity,
-		ColorFlags:   device.CFlagRGB,
-		State:        device.State{},
-	})
-	bus.RunEvent(events.HardwareState{
-		ID:           "nanoleaf:10.80.1.11:dead",
-		InternalName: "Hexagon 7",
-		SupportFlags: device.SFlagPower | device.SFlagColor | device.SFlagIntensity,
-		ColorFlags:   device.CFlagRGB,
-		State:        device.State{},
-	})
-	bus.RunEvent(events.HardwareState{
-		ID:           "nanoleaf:10.80.1.11:beef",
-		InternalName: "Hexagon 8",
+			ID:           "nanoleaf:10.80.1.11:" + id,
+			InternalName: fmt.Sprintf("Hexagon %d", 6+i),
 			SupportFlags: device.SFlagPower | device.SFlagColor | device.SFlagIntensity,
 			ColorFlags:   device.CFlagRGB,
 			State:        device.State{},
 		})
+	}
 
 	time.Sleep(time.Millisecond)
 
@@ -90,22 +78,25 @@ func main() {
 
 	time.Sleep(time.Millisecond)
 
+	c1 := gentools.Ptr(color.MustParse("rgb:#ff0000"))
+	c2 := gentools.Ptr(color.MustParse("rgb:#00ff00"))
 	bus.RunCommand(commands.Assign{
 		Match: "**:Hexagon *",
-		Effect: effects.Pattern{
+		Effect: effects.Gradient{
 			States: []device.State{
 				{
 					Power:     gentools.Ptr(true),
-					Color:     gentools.Ptr(color.MustParse("rgb:#ff0000")),
+					Color:     c1,
 					Intensity: gentools.Ptr(1.0),
 				},
 				{
 					Power:     gentools.Ptr(true),
-					Color:     gentools.Ptr(color.MustParse("rgb:#00ff00")),
+					Color:     c2,
 					Intensity: gentools.Ptr(0.7),
 				},
 			},
-			ShiftMS: 1000,
+			AnimationMS: 1000,
+			Interpolate: true,
 		},
 	})
 

device/state.go

@@ -3,6 +3,7 @@ package device
 import (
 	"fmt"
 	"git.aiterp.net/lucifer3/server/internal/color"
+	"git.aiterp.net/lucifer3/server/internal/gentools"
 	"strings"
 )
 
@@ -13,24 +14,65 @@ type State struct {
 	Color       *color.Color `json:"color"`
 }
 
-func (d State) String() string {
+func (s State) String() string {
 	parts := make([]string, 0, 4)
-	if d.Power != nil {
-		parts = append(parts, fmt.Sprintf("power:%t", *d.Power))
+	if s.Power != nil {
+		parts = append(parts, fmt.Sprintf("power:%t", *s.Power))
 	}
-	if d.Temperature != nil {
-		parts = append(parts, fmt.Sprintf("temperature:%f", *d.Temperature))
+	if s.Temperature != nil {
+		parts = append(parts, fmt.Sprintf("temperature:%f", *s.Temperature))
 	}
-	if d.Intensity != nil {
-		parts = append(parts, fmt.Sprintf("intensity:%.2f", *d.Intensity))
+	if s.Intensity != nil {
+		parts = append(parts, fmt.Sprintf("intensity:%.2f", *s.Intensity))
 	}
-	if d.Color != nil {
-		parts = append(parts, fmt.Sprintf("color:%s", d.Color.String()))
+	if s.Color != nil {
+		parts = append(parts, fmt.Sprintf("color:%s", s.Color.String()))
 	}
 
 	return fmt.Sprint("(", strings.Join(parts, ", "), ")")
 }
 
+func (s State) Interpolate(s2 State, f float64) State {
+	newState := State{}
+	if s.Color != nil && s2.Color != nil {
+		newState.Color = gentools.Ptr(s.Color.Interpolate(*s2.Color, f))
+	} else if s.Color != nil {
+		newState.Color = gentools.ShallowCopy(s.Color)
+	} else if s2.Color != nil {
+		newState.Color = gentools.ShallowCopy(s2.Color)
+	}
+
+	if s.Intensity != nil && s2.Intensity != nil {
+		newState.Intensity = gentools.Ptr((*s.Intensity * f) + (*s2.Intensity * (1.0 - f)))
+	} else if s.Intensity != nil {
+		newState.Intensity = gentools.ShallowCopy(s.Intensity)
+	} else if s2.Intensity != nil {
+		newState.Intensity = gentools.ShallowCopy(s2.Intensity)
+	}
+
+	if s.Temperature != nil && s2.Temperature != nil {
+		newState.Temperature = gentools.Ptr((*s.Temperature * f) + (*s2.Temperature * (1.0 - f)))
+	} else if s.Temperature != nil {
+		newState.Temperature = gentools.ShallowCopy(s.Temperature)
+	} else if s2.Temperature != nil {
+		newState.Temperature = gentools.ShallowCopy(s2.Temperature)
+	}
+
+	if s.Power != nil && s2.Power != nil {
+		if f < 0.5 {
+			newState.Power = gentools.ShallowCopy(s.Power)
+		} else {
+			newState.Power = gentools.ShallowCopy(s2.Power)
+		}
+	} else if s.Power != nil {
+		newState.Power = gentools.ShallowCopy(s.Power)
+	} else if s2.Power != nil {
+		newState.Power = gentools.ShallowCopy(s2.Power)
+	}
+
+	return newState
+}
+
 type PresenceState struct {
 	Present        bool    `json:"present"`
 	AbsenceSeconds float64 `json:"absenceSeconds,omitempty"`

effects/gradient.go

@@ -0,0 +1,60 @@
+package effects
+
+import (
+	"fmt"
+	"git.aiterp.net/lucifer3/server/device"
+	"math"
+	"time"
+)
+
+type Gradient struct {
+	States      []device.State `json:"states,omitempty"`
+	AnimationMS int64          `json:"AnimationMs,omitempty"`
+	Reverse     bool           `json:"backward,omitempty"`
+	Interpolate bool           `json:"interpolate,omitempty"`
+}
+
+func (e Gradient) State(index, length, round, _ int) device.State {
+	if len(e.States) == 0 {
+		return device.State{}
+	}
+
+	if e.Reverse {
+		index = length - (index + 1)
+	}
+
+	walkedIndex := (index + round) % length
+	indexFactor := math.Min(float64(walkedIndex)/float64(length-1), 1)
+	stateIncrement := 1.0 / float64(len(e.States)-1)
+
+	for i := range e.States {
+		a := float64(i) * stateIncrement
+		if indexFactor >= a {
+			si := e.States[i]
+			sj := e.States[(i+1)%len(e.States)]
+			f := (indexFactor - a) / stateIncrement
+
+			if f < 0 || f > 1 {
+				panic(f)
+			}
+
+			if e.Interpolate {
+				return si.Interpolate(sj, f)
+			} else if f < 0.5 {
+				return si
+			} else {
+				return sj
+			}
+		}
+	}
+
+	return e.States[len(e.States)-1]
+}
+
+func (e Gradient) Frequency() time.Duration {
+	return time.Duration(e.AnimationMS) * time.Millisecond
+}
+
+func (e Gradient) EffectDescription() string {
+	return fmt.Sprintf("Gradient(states:%s, anim:%dms, int:%t)", statesDescription(e.States), e.AnimationMS, e.Interpolate)
+}

effects/manual.go

@@ -15,14 +15,14 @@ type Manual struct {
 }
 
 func (e Manual) EffectDescription() string {
-	return fmt.Sprintf("Manual%s", e.State(0, 0, 0).String())
+	return fmt.Sprintf("Manual%s", e.State(0, 0, 0, 0).String())
 }
 
 func (e Manual) Frequency() time.Duration {
 	return 0
 }
 
-func (e Manual) State(int, int, int) device.State {
+func (e Manual) State(int, int, int, int) device.State {
 	return device.State{
 		Power:       e.Power,
 		Temperature: e.Temperature,

effects/pattern.go

@@ -8,17 +8,21 @@ import (
 
 type Pattern struct {
 	States      []device.State `json:"states,omitempty"`
-	ShiftMS int64          `json:"shiftMs,omitempty"`
+	AnimationMS int64          `json:"animationMs,omitempty"`
 }
 
-func (p Pattern) State(index, round, _ int) device.State {
-	return p.States[(index+round)%len(p.States)]
+func (e Pattern) State(index, _, round, _ int) device.State {
+	if len(e.States) == 0 {
+		return device.State{}
+	}
+
+	return e.States[(index+round)%len(e.States)]
 }
 
-func (p Pattern) Frequency() time.Duration {
-	return time.Duration(p.ShiftMS) * time.Millisecond
+func (e Pattern) Frequency() time.Duration {
+	return time.Duration(e.AnimationMS) * time.Millisecond
 }
 
-func (p Pattern) EffectDescription() string {
-	return fmt.Sprintf("Pattern(len:%d, animation:%dms)", len(p.States), p.ShiftMS)
+func (e Pattern) EffectDescription() string {
+	return fmt.Sprintf("Pattern(states:%s, anim:%dms)", statesDescription(e.States), e.AnimationMS)
 }

effects/random.go

@@ -0,0 +1,54 @@
+package effects
+
+import (
+	"fmt"
+	"git.aiterp.net/lucifer3/server/device"
+	"math/rand"
+	"time"
+)
+
+type Random struct {
+	States      []device.State `json:"states,omitempty"`
+	Interpolate bool           `json:"interpolate,omitempty"`
+	AnimationMS int64          `json:"animationMs,omitempty"`
+}
+
+func (e Random) State(_, _, _, _ int) device.State {
+	if len(e.States) == 0 {
+		return device.State{}
+	}
+
+	indexFactor := rand.Float64()
+	stateIncrement := 1.0 / float64(len(e.States)-1)
+
+	for i := range e.States {
+		a := float64(i) * stateIncrement
+		if indexFactor >= a {
+			si := e.States[i]
+			sj := e.States[(i+1)%len(e.States)]
+			f := (indexFactor - a) / stateIncrement
+
+			if f < 0 || f > 1 {
+				panic(f)
+			}
+
+			if e.Interpolate {
+				return si.Interpolate(sj, f)
+			} else if f < 0.5 {
+				return si
+			} else {
+				return sj
+			}
+		}
+	}
+
+	return e.States[len(e.States)-1]
+}
+
+func (e Random) Frequency() time.Duration {
+	return time.Duration(e.AnimationMS) * time.Millisecond
+}
+
+func (e Random) EffectDescription() string {
+	return fmt.Sprintf("Random(states:%s, anim:%dms, int:%t)", statesDescription(e.States), e.AnimationMS, e.Interpolate)
+}

effects/utils.go

@@ -0,0 +1,23 @@
+package effects
+
+import (
+	"git.aiterp.net/lucifer3/server/device"
+	"strings"
+)
+
+func statesDescription(states []device.State) string {
+	sb := strings.Builder{}
+	sb.Grow(128)
+
+	sb.WriteRune('[')
+	for i, state := range states {
+		if i > 0 {
+			sb.WriteString(", ")
+		}
+
+		sb.WriteString(state.String())
+	}
+	sb.WriteRune(']')
+
+	return sb.String()
+}

interface.go

@@ -8,9 +8,10 @@ import (
 type Effect interface {
 	// State uses three values:
 	// index: The position of this ID;
+	// len: The total length of the effect's IDs;
 	// round: Increases by one for each run of the effect if Frequency > 0;
 	// random: A random positive int in the full 31-bit range.
-	State(index, round, random int) device.State
+	State(index, len, round, random int) device.State
 	Frequency() time.Duration
 	EffectDescription() string
 }

internal/color/color.go

@@ -188,11 +188,17 @@ func (col *Color) Interpolate(other Color, fac float64) Color {
 		return Color{K: &k3}
 	}
 
+	if fac < 0.000001 {
+		return *col
+	} else if fac > 0.999999 {
+		return other
+	}
+
 	// Get the colorful values.
 	cvCF := col.colorful()
 	otherCF := other.colorful()
 
-	// Blend and normalize
+	// Blend and normalize (clamping is hax to avoid issues with some colors)
 	blended := cvCF.BlendLuv(otherCF, fac)
 	blendedHue, blendedSat, _ := blended.Hsv()
 	blendedHs := HueSat{Hue: blendedHue, Sat: blendedSat}
@@ -253,7 +259,7 @@ func (col *Color) colorful() colorful.Color {
 	case col.XY != nil:
 		return colorful.Xyy(col.XY.X, col.XY.Y, 0.5)
 	default:
-		return colorful.Color{R: 255, B: 255, G: 255}
+		return colorful.Color{R: 1, B: 1, G: 1}
 	}
 }
 

internal/color/hs.go

@@ -1,6 +1,9 @@
 package color
 
-import "github.com/lucasb-eyer/go-colorful"
+import (
+	"github.com/lucasb-eyer/go-colorful"
+	"math"
+)
 
 type HueSat struct {
 	Hue float64 `json:"hue"`
@@ -13,5 +16,5 @@ func (hs HueSat) ToXY() XY {
 
 func (hs HueSat) ToRGB() RGB {
 	c := colorful.Hsv(hs.Hue, hs.Sat, 1)
-	return RGB{Red: c.R, Green: c.G, Blue: c.B}
+	return RGB{Red: math.Max(c.R, 0), Green: math.Max(c.G, 0), Blue: math.Max(c.B, 0)}
 }

internal/color/rgb.go

@@ -14,6 +14,14 @@ func (rgb RGB) AtIntensity(intensity float64) RGB {
 	return RGB{Red: hsv2.R, Green: hsv2.G, Blue: hsv2.B}
 }
 
+func (rgb RGB) Bytes() [3]uint8 {
+	return [3]uint8{
+		uint8(rgb.Red * 255.0),
+		uint8(rgb.Green * 255.0),
+		uint8(rgb.Blue * 255.0),
+	}
+}
+
 func (rgb RGB) ToHS() HueSat {
 	hue, sat, _ := colorful.Color{R: rgb.Red, G: rgb.Green, B: rgb.Blue}.Hsv()
 	return HueSat{Hue: hue, Sat: sat}

internal/gentools/ptr.go

@@ -3,3 +3,8 @@ package gentools
 func Ptr[T any](t T) *T {
 	return &t
 }
+
+func ShallowCopy[T any](t *T) *T {
+	tCopy := *t
+	return &tCopy
+}

services/effectenforcer.go

@@ -94,7 +94,7 @@ func (s *effectEnforcer) runLoop(bus *lucifer3.EventBus) {
 					continue
 				}
 
-				state := run.effect.State(j, run.round, r)
+				state := run.effect.State(j, len(run.ids), run.round, r)
 				commandQueue = append(commandQueue, commands.SetState{
 					ID:    id,
 					State: state,