kiteplayer-audioviz/io.github.yuroyami.kiteplayer.audioviz.viz.motion/Impulses

Impulses

class Impulses(capacity: Int = 64)

The last hits, each with a place, for rings, shocks and eddies that spread from where a hit landed. The newest is index 0. Ages count heard seconds, so a pause holds every ring where it is.

Positions are in the drawings' centred units: 0,0 is the middle and one unit is half the screen height, so x runs to about plus or minus the aspect ratio. A shader reads the same list as a 64 by 2 picture through impulseA and impulseB in the shared header.

Constructors

constructor(capacity: Int = 64)

Types

object Companion

Properties

How many hits the list holds now.

Functions

fun add(kind: Int, strength: Float, x: Float, y: Float, seed: Float)

Adds a hit of kind (LOW, BODY or HIGH) at x, y as the newest, dropping the oldest when full.

fun advance(heardSeconds: Float)

Ages every impulse by heardSeconds and drops those older than MOST_AGE.

fun ageOf(i: Int): Float

Heard seconds since hit i landed.

fun bindTo(program: ShaderProgram)

Writes the picture and hands it to program under the header's names.

fun kindOf(i: Int): Int

The kind of hit i: LOW, BODY or HIGH.

fun reset()

Empties the list.

fun seedOf(i: Int): Float

The random number 0 to 1 that came with hit i.

fun strengthOf(i: Int): Float

How hard hit i was, 0 to 1.

fun xOf(i: Int): Float

Where hit i landed across, in centred units.

fun yOf(i: Int): Float

Where hit i landed up, in centred units.