time | 添加关键点的时间(曲线图中的水平轴)。 |
value | 关键点的值(曲线图中的垂直轴)。 |
int 已添加的关键点的索引,如果无法添加关键点,则为 -1。
将一个新关键点添加到曲线中。
关键点的平滑切线是自动计算的。
返回已添加的关键点的索引。
如果因同时已经有另一个关键帧而无法添加关键点,则将返回 -1。
另请参阅:keys 变量。
key | 要添加到曲线中的关键点。 |
int 已添加的关键点的索引,如果无法添加关键点,则为 -1。
将一个新关键点添加到曲线中。
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