add gradient and random effect.

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"`