linear 直线匀速运动
sine_easein
sine_easeout
sine_easeinout
quad_easein
quad_easeout
quad_easeinout
cubic_easein
cubic_easeout
cubic_easeinout
quart_easein
quart_easeout
quart_easeinout
quint_easein
quint_easeout
quint_easeinout
expo_easein
expo_easeout
expo_easeinout
circ_easein
circ_easeout
circ_easeinout
elastic_easeinout
back_easeout
back_easeinout
bounce_easein
bounce_easeout
bounce_easeinout
第一个是匀速直线运动,其他的呢?