Function invAttack

invAttack(length: number, curve: number, t: Time): number
Attack function that grows slowly from [0, 0] to [length, 1] in a convex shape.

curve controls the exponential strength.
```
     __
 ,·´
/
```
Parameters
- length: number
  The length of the attack phase.
- curve: number
  The curve of the attack (higher values = slower). Defaults to 2.
- t: Time
  The current time.
Returns number
The envelope value at time t.
- Defined in Envelope.ts:62
invAttack(length: number, t: Time): number
Attack function that grows slowly from [0, 0] to [length, 1] in a convex shape.

curve controls the exponential strength.
```
     __
 ,·´
/
```
Parameters
- length: number
  The length of the attack phase.
- t: Time
  The current time.
Returns number
The envelope value at time t.
- Defined in Envelope.ts:63