🎉 Initial commit

animation/transform.go

@@ -0,0 +1,52 @@
+package animation
+
+import (
+	"fmt"
+)
+
+// TransformAnimation 变换动画
+type TransformAnimation struct {
+	BaseAnimation
+	TransformType string // 变换类型（scale, translate等）
+	From          string // 起始变换值
+	To            string // 结束变换值
+}
+
+// NewTransformAnimation 创建一个变换动画
+func NewTransformAnimation(targetID string, transformType string, from, to string, duration float64, repeatCount int) *TransformAnimation {
+	return &TransformAnimation{
+		BaseAnimation: BaseAnimation{
+			Type:        Transform,
+			Duration:    duration,
+			RepeatCount: repeatCount,
+			Delay:       0,
+			TargetID:    targetID,
+			Attributes:  make(map[string]string),
+		},
+		TransformType: transformType,
+		From:          from,
+		To:            to,
+	}
+}
+
+// GenerateSVG 生成变换动画的SVG代码
+func (a *TransformAnimation) GenerateSVG() string {
+	// 创建一个animateTransform元素，并将其添加到目标元素中
+	svg := fmt.Sprintf("<animateTransform href=\"#%s\" attributeName=\"transform\" attributeType=\"XML\" type=\"%s\" ", a.TargetID, a.TransformType)
+	svg += fmt.Sprintf("from=\"%s\" to=\"%s\" ", a.From, a.To)
+	svg += fmt.Sprintf("dur=\"%gs\" ", a.Duration)
+
+	if a.RepeatCount < 0 {
+		svg += "repeatCount=\"indefinite\" "
+	} else if a.RepeatCount > 0 {
+		svg += fmt.Sprintf("repeatCount=\"%d\" ", a.RepeatCount)
+	}
+
+	if a.Delay > 0 {
+		svg += fmt.Sprintf("begin=\"%gs\" ", a.Delay)
+	}
+
+	svg += "additive=\"sum\" />\n"
+
+	return svg
+}