easing

#!/usr/bin/env python3
"""
Easing Functions - Timing functions for smooth animations.

Provides various easing functions for natural motion and timing.
All functions take a value t (0.0 to 1.0) and return eased value (0.0 to 1.0).
"""

import math


def linear(t: float) -> float:
    """Linear interpolation (no easing)."""
    return t


def ease_in_quad(t: float) -> float:
    """Quadratic ease-in (slow start, accelerating)."""
    return t * t


def ease_out_quad(t: float) -> float:
    """Quadratic ease-out (fast start, decelerating)."""
    return t * (2 - t)


def ease_in_out_quad(t: floa

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