🎉 Initial commit

animation/wave.go

@@ -0,0 +1,81 @@
+package animation
+
+import (
+	"fmt"
+	"math"
+	"strings"
+)
+
+// WaveAnimation 波浪动画
+type WaveAnimation struct {
+	BaseAnimation
+	Amplitude float64 // 波浪振幅
+	Frequency float64 // 波浪频率
+	Direction string  // 波浪方向 ("horizontal" 或 "vertical")
+}
+
+// NewWaveAnimation 创建一个波浪动画
+func NewWaveAnimation(targetID string, amplitude, frequency float64, direction string, duration float64, repeatCount int) *WaveAnimation {
+	return &WaveAnimation{
+		BaseAnimation: BaseAnimation{
+			Type:        Wave, // 波浪动画类型
+			Duration:    duration,
+			RepeatCount: repeatCount,
+			Delay:       0,
+			TargetID:    targetID,
+			Attributes:  make(map[string]string),
+		},
+		Amplitude: amplitude,
+		Frequency: frequency,
+		Direction: direction,
+	}
+}
+
+// GenerateSVG 生成波浪动画的SVG代码
+func (a *WaveAnimation) GenerateSVG() string {
+	var sb strings.Builder
+
+	// 生成波浪路径
+	path := a.generateWavePath()
+
+	// 创建一个animateMotion元素
+	sb.WriteString(fmt.Sprintf("<animateMotion href=\"#%s\" ", a.TargetID))
+	sb.WriteString(fmt.Sprintf("path=\"%s\" ", path))
+	sb.WriteString(fmt.Sprintf("dur=\"%gs\" ", a.Duration))
+
+	if a.RepeatCount < 0 {
+		sb.WriteString("repeatCount=\"indefinite\" ")
+	} else if a.RepeatCount > 0 {
+		sb.WriteString(fmt.Sprintf("repeatCount=\"%d\" ", a.RepeatCount))
+	}
+
+	if a.Delay > 0 {
+		sb.WriteString(fmt.Sprintf("begin=\"%gs\" ", a.Delay))
+	}
+
+	sb.WriteString("/>\n")
+
+	return sb.String()
+}
+
+// generateWavePath 生成波浪路径
+func (a *WaveAnimation) generateWavePath() string {
+	var path strings.Builder
+	path.WriteString("M0,0 ")
+
+	// 生成正弦波路径
+	points := 20 // 路径点数量
+	for i := 0; i <= points; i++ {
+		x := float64(i) / float64(points) * 100 // 0-100 范围
+		// 计算正弦波 y 值
+		y := a.Amplitude * math.Sin(a.Frequency*x*math.Pi/180)
+
+		if a.Direction == "horizontal" {
+			path.WriteString(fmt.Sprintf("L%g,%g ", x, y))
+		} else { // vertical
+			path.WriteString(fmt.Sprintf("L%g,%g ", y, x))
+		}
+	}
+
+	return path.String()
+}