69 lines
1.6 KiB
Go
69 lines
1.6 KiB
Go
package animation
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// ExpressionMapping maps emotion values to facial expressions
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type ExpressionMapping struct {
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Valence float64 // -1.0 to 1.0
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Arousal float64 // 0.0 to 1.0
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}
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// GetExpressionFromEmotion maps emotion to expression parameters
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func GetExpressionFromEmotion(valence, arousal float64) ExpressionParams {
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// Map valence/arousal to expression
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// High valence + high arousal = happy/excited
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// Low valence + high arousal = angry/frustrated
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// High valence + low arousal = calm/content
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// Low valence + low arousal = sad/depressed
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var emotion string
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var smileAmount float64
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var browRaise float64
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var eyeWideness float64
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if valence > 0.5 && arousal > 0.5 {
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emotion = "happy"
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smileAmount = 0.8
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browRaise = 0.3
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eyeWideness = 0.6
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} else if valence < -0.5 && arousal > 0.5 {
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emotion = "angry"
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smileAmount = -0.5
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browRaise = -0.7
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eyeWideness = 0.8
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} else if valence > 0.3 && arousal < 0.3 {
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emotion = "calm"
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smileAmount = 0.3
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browRaise = 0.0
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eyeWideness = 0.4
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} else if valence < -0.3 && arousal < 0.3 {
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emotion = "sad"
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smileAmount = -0.3
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browRaise = 0.2
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eyeWideness = 0.3
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} else {
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emotion = "neutral"
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smileAmount = 0.0
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browRaise = 0.0
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eyeWideness = 0.5
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}
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return ExpressionParams{
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Emotion: emotion,
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SmileAmount: smileAmount,
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BrowRaise: browRaise,
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EyeWideness: eyeWideness,
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Valence: valence,
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Arousal: arousal,
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}
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}
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// ExpressionParams contains facial expression parameters
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type ExpressionParams struct {
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Emotion string
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SmileAmount float64 // -1.0 to 1.0
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BrowRaise float64 // -1.0 to 1.0
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EyeWideness float64 // 0.0 to 1.0
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Valence float64
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Arousal float64
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}
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