🎉 Initial commit

animation/color.go

@@ -0,0 +1,55 @@
+package animation
+
+import (
+	"fmt"
+	"strings"
+)
+
+// ColorAnimation 颜色变换动画
+type ColorAnimation struct {
+	BaseAnimation
+	FromColor string // 起始颜色
+	ToColor   string // 结束颜色
+	Property  string // 要变换的属性（fill 或 stroke）
+}
+
+// NewColorAnimation 创建一个颜色变换动画
+func NewColorAnimation(targetID string, property string, fromColor, toColor string, duration float64, repeatCount int) *ColorAnimation {
+	return &ColorAnimation{
+		BaseAnimation: BaseAnimation{
+			Type:        Color, // 颜色变换动画类型
+			Duration:    duration,
+			RepeatCount: repeatCount,
+			Delay:       0,
+			TargetID:    targetID,
+			Attributes:  make(map[string]string),
+		},
+		FromColor: fromColor,
+		ToColor:   toColor,
+		Property:  property,
+	}
+}
+
+// GenerateSVG 生成颜色变换动画的SVG代码
+func (a *ColorAnimation) GenerateSVG() string {
+	var sb strings.Builder
+
+	// 创建一个animate元素
+	sb.WriteString(fmt.Sprintf("<animate href=\"#%s\" attributeName=\"%s\" ", a.TargetID, a.Property))
+	sb.WriteString(fmt.Sprintf("from=\"%s\" to=\"%s\" ", a.FromColor, a.ToColor))
+	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()
+}