Package net.paulhertz.pixelaudio.curves

package net.paulhertz.pixelaudio.curves

Package net.paulhertz.pixelaudio.curves implements light weight classes for Bezier curve modeling.

Adapted from IgnoCodeLib Processing library for use with PixelAudio library. IgnoCodeLib is available in the Processing contributed libraries and at https://paulhertz.net/ignocodelib/ and https://github.com/Ignotus-mago/IgnoCodeLib3

• PAVertex2DINF. provides an interface for line and curve vertices.
• PALineVertex stores a line vertex Interface for line and curve vertices
• PABezVertex provides storage for a cubic Bezier curves's control points and anchor point.
• PABezShape stores open or closed paths composed of lines and Bezier curves, and implements attributes and geometric transforms for them.
• PACurveMaker is a utility and storage class for interactive drawing and curve modeling.
• PACurveUtility provides static methods that support curve modeling and drawing.

Related Packages

Package	Description
net.paulhertz.pixelaudio	Package net.paulhertz.pixelaudio blends sounds and images by mapping between arrays of audio samples and arrays of pixel values.
net.paulhertz.pixelaudio.example
net.paulhertz.pixelaudio.granular
net.paulhertz.pixelaudio.sampler	Package net.paulhertz.pixelaudio.sampler provides a hierarchy of Java classes for implementing digital audio sampling synthesis with support from the Minim library for Processing.
net.paulhertz.pixelaudio.schedule

Class	Description
AudioBrush	Abstract class for combining gesture data from PACurveMaker with settings for modifying gesture data and setting audio generation parameters with GestureGranularConfig.Builder.
GestureMapping	Maps gesture points to indices into a mappingSnapshot array.
GestureMapping.DefaultMapping	Default: interpret p as pixel coordinates and mappingSnapshot as width*height raster.
GranularBrush
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.
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 definitional interface for "gestures": A gesture is constructed from 1) a list of points and 2) a list of time offsets where 3) both lists have the same cardinality and 4) time offsets are monotonically non-dereasing.
PAGestureParametric	PAGestureParametric Treats a gesture defined by (time, x, y) samples as a parametric curve: u ∈ [0,1] → (t(u), x(u), y(u)) Under the hood: - timesMs: int[] of time offsets (ms), ascending, timesMs[0] == 0 - points: PVector list (x,y) of same length You can: - sample with a linear parameter: f(u) = u - pass a warp function f(u) to speed up/slow down traversal Exponential warp (speeding up over time) DoubleUnaryOperator expWarp = u -> (float_ Math.pow(u, 2.0); // u^2 GestureParametric.Sample s = gp.sample(0.5f, expWarp); Log-like warp (fast at start, slow at end) DoubleUnaryOperator sqrtWarp = u -> (float_ Math.sqrt(u); // GestureParametric.Sample s = gp.sample(0.5f, sqrtWarp); Something like f(u) = (e^{k * u} - 1) / (e^{k} - 1) for more dramatic warps.
PAGestureParametric.Sample
PAIndexParametric	PAIndexParametric Parametric view of a indexed offsets, typically into a float[] buffer (audio signal).
PALineVertex	Stores a line vertex consisting of a single point.
PAPathParametric	PAPathParametric Parametric view of a polyline path (e.g., polygonized Bezier).
PAVertex2DINF	Interface for line and curve vertices.
SamplerBrush