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