62 lines
1.7 KiB
Go
62 lines
1.7 KiB
Go
package animation
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
// RotateAnimation 旋转动画
|
|
type RotateAnimation struct {
|
|
BaseAnimation
|
|
FromAngle float64 // 起始角度
|
|
ToAngle float64 // 结束角度
|
|
CenterX float64 // 旋转中心X坐标
|
|
CenterY float64 // 旋转中心Y坐标
|
|
}
|
|
|
|
// NewRotateAnimation 创建一个旋转动画
|
|
func NewRotateAnimation(targetID string, fromAngle, toAngle float64, duration float64, repeatCount int) *RotateAnimation {
|
|
return &RotateAnimation{
|
|
BaseAnimation: BaseAnimation{
|
|
Type: Rotate,
|
|
Duration: duration,
|
|
RepeatCount: repeatCount,
|
|
Delay: 0,
|
|
TargetID: targetID,
|
|
Attributes: make(map[string]string),
|
|
},
|
|
FromAngle: fromAngle,
|
|
ToAngle: toAngle,
|
|
CenterX: 0,
|
|
CenterY: 0,
|
|
}
|
|
}
|
|
|
|
// GenerateSVG 生成旋转动画的SVG代码
|
|
func (a *RotateAnimation) GenerateSVG() string {
|
|
// 创建一个带有transform-box和transform-origin样式的g元素
|
|
// 这个g元素将包裹目标元素及其相关元素
|
|
svg := fmt.Sprintf("<g style=\"transform-box: fill-box; transform-origin: center;\">\n")
|
|
|
|
// 这里只添加animateTransform元素
|
|
svg += fmt.Sprintf(" <animateTransform attributeName=\"transform\" attributeType=\"XML\" type=\"rotate\" ")
|
|
// 不再需要指定中心点坐标，直接使用角度值
|
|
svg += fmt.Sprintf("from=\"%g\" to=\"%g\" ", a.FromAngle, a.ToAngle)
|
|
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"
|
|
|
|
svg += "</g>\n"
|
|
|
|
return svg
|
|
}
|