Module motion 

Motion path interpolation for keyframe animations

This module provides bezier curve interpolation and easing functions for smooth motion in animations. It supports:

• Linear interpolation
• Standard easing functions (ease-in, ease-out, ease-in-out)
• Cubic bezier interpolation with control points
• CSS steps() timing function
• Automatic arc path fitting

Example

use pixelsrc::motion::{Interpolation, interpolate, Point2D};

// Linear interpolation between two points
let start = Point2D { x: 0.0, y: 0.0 };
let end = Point2D { x: 100.0, y: 50.0 };
let mid = interpolate_point(&start, &end, 0.5, Interpolation::Linear);
assert_eq!(mid.x, 50.0);
assert_eq!(mid.y, 25.0);

Structs

ControlPoint

Control point for bezier curves

Point2D

A 2D point for motion path calculations

Enums

Interpolation

Interpolation method for keyframe animation

MotionPath

Motion path type for position interpolation

StepPosition

Step position for CSS steps() timing function.

TimingFunctionError

Error type for timing function parsing Error type for timing function parsing failures

Functions

ease

Apply easing to a normalized time value (0.0 to 1.0)

generate_motion_frames

Generate intermediate frames for a keyframe animation

interpolate_path

Interpolate along a motion path

interpolate_point

Interpolate between two points with easing

interpolate_value

Interpolate a single value between keyframes

parse_interpolation

Parse interpolation mode from string

parse_motion_path

Parse motion path from string

parse_timing_function

Parse a CSS timing function string.