Package net.paulhertz.pixelaudio.curves

package net.paulhertz.pixelaudio.curves

Gesture, path, and Bézier curve modeling classes for PixelAudio.

This package supports timed gesture capture, point reduction, Bézier path construction, brush shapes, hit testing, curve drawing, and gesture-derived event paths for audio and visual applications.

Core gesture and brush classes

• PACurveMaker records timed gestures and derives reduced points, Bézier paths, brush shapes, polygons, and event points.
• PAGesture defines the basic interface for gesture point and timing data.
• AudioBrush combines a gesture curve with audio synthesis parameters.
• GranularBrush and SamplerBrush specialize AudioBrush for gesture playback with granular and sampler audio synthesis.

Path and curve geometry

• PABezShape stores and draws composite Bézier paths, including transforms and hit-test polygons.
• PABezVertex and PALineVertex represent curved and straight path segments.
• PAVertex2DINF defines shared behavior for 2D path vertices.
• PACurveUtility provides static geometry, reduction, and drawing utilities.

Gesture mapping, transforms, and parameter curves

• GestureTransformState stores geometric transform state for gesture and curve modeling.
• PABoundsPolicy applies boundary rules to gesture points and schedules.
• PAControlCurve and PAKeyframeControlCurve model control values over normalized time.

Experimental

• PAGestureParametric, PAIndexParametric, and PAPathParametric provide parametric sampling over gestures, indices, and paths.
• PAGestureWriter supports output or serialization of curves implemented by BezShape.

Curve-modeling adapted from the IgnoCodeLib Processing library for use with PixelAudio.

Related Packages

Package	Description
net.paulhertz.pixelaudio	Core classes for PixelAudio, a Processing library that maps between sound and image data.
net.paulhertz.pixelaudio.example	Example Processing sketches and demonstrations of PixelAudio library functionality.
net.paulhertz.pixelaudio.granular	Granular synthesis classes for PixelAudio.
net.paulhertz.pixelaudio.io	JSON-based persistence for PixelAudio data structures supported by file i/o classes.
net.paulhertz.pixelaudio.sampler	Digital audio sampling synthesis classes for PixelAudio.
net.paulhertz.pixelaudio.schedule	Sample-accurate event scheduling, gesture-based time management, and audio utility functions.

Class	Description
AudioBrush	Abstract class for combining gesture data from PACurveMaker with audio synthesis parameters from GestureGranularConfig.Builder.
GestureTransformState	Stores optional affine-transform state for a gesture/curve.
GranularBrush	AudioBrush subclass for PAGranularInstrument.
PABezShape	Class to store a path composed of lines and Bezier curves, along with fill, stroke, weight and opacity values.
PABezVertex	Provides storage for a cubic Bezier curves's control points and anchor point.
PABoundsPolicy	Boundary policy for mapping gesture points into a rectangular domain.
PABoundsPolicy.PABoundaryMode	Provides descriptors for PABoundsPolicy: CLIP, WRAP, REFLECT, SKIP_TIME, KEEP_TIME.
PAControlCurve	Minimal interface for interpolated curves.
PACurveMaker	PACurveMaker is a utility and storage class for gestures and curve modeling, with point reduction and drawing to on-screen PApplets or off-screen PGraphics.
PACurveMaker.PointsMutator	Simple Processing-friendly callback interface.
PACurveUtility	A class to maintain static versions of point reduction and curve-modeling methods.
PAGesture	PAGesture provides a interface for "gesture" defined by: a list of points and a list of time offsets where both lists have the same cardinality and time offsets are monotonically non-decreasing.
PAGestureParametric	Treats a gesture defined by (time, x, y) samples as a parametric curve.
PAGestureParametric.Sample	Data storage class for PAGestureParametric.
PAGestureWriter	Reduced set of Adobe Illustrator 3.0 (ancient but still useful) path operators for recording curves.
PAIndexParametric	PAIndexParametric Parametric view of an indexed offset list, typically into a float[] buffer (for example, an audio signal or lookup table).
PAKeyframeControlCurve	Models piecewise-linear scalar control curve defined by keyframes.
PALineVertex	Stores a line vertex consisting of a single point.
PAPathParametric	Deprecated.
PAVertex2DINF	Interface for line and curve vertices.
SamplerBrush	AudioBrush subclass for PASamplerInstrument.