/usr/share/SuperCollider/HelpSource/Classes/TBall.schelp is in supercollider-common 1:3.8.0~repack-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 | class:: TBall
summary:: physical model of bouncing object
categories:: UGens>Filters>Nonlinear, UGens>Generators>PhysicalModels
related:: Classes/Ball, Classes/Spring
description::
models the impacts of a bouncing object that is reflected by a vibrating surface
classmethods::
method:: ar, kr
argument::in
modulated surface level
argument::g
gravity
argument::damp
damping on impact
argument::friction
proximity from which on attraction to surface starts
examples::
code::
// mouse x controls switch of level
// mouse y controls gravity
(
{
var t, sf;
sf = K2A.ar(MouseX.kr > 0.5) > 0;
t = TBall.ar(sf, MouseY.kr(0.01, 1.0, 1), 0.01);
Pan2.ar(Ringz.ar(t * 10, 1200, 0.1), MouseX.kr(-1,1));
}.play;
)
// mouse x controls step noise modulation rate
// mouse y controls gravity
(
{
var t, sf, g;
sf = LFNoise0.ar(MouseX.kr(0.5, 100, 1));
g = MouseY.kr(0.01, 10, 1);
t = TBall.ar(sf, g, 0.01, 0.002);
Ringz.ar(t * 4, [600, 645], 0.3);
}.play;
)
// mouse x controls sine modulation rate
// mouse y controls friction
// gravity changes slowly
(
{
var f, g, h, fr;
fr = MouseX.kr(1, 1000, 1);
h = MouseY.kr(0.0001, 0.001, 1);
g = LFNoise1.kr(0.1, 3, 5);
f = TBall.ar(SinOsc.ar(fr), g, 0.1, h);
Pan2.ar(Ringz.ar(f, 1400, 0.04),0,5)
}.play;
)
// sine frequency rate is modulated with a slow sine
// mouse y controls friction
// mouse x controls gravity
(
{
var f, g, h, fr;
fr = LinExp.kr(SinOsc.kr(0.1), -1, 1, 1, 600);
h = MouseY.kr(0.0001, 0.001, 1);
g = MouseX.kr(1, 10);
f = TBall.ar(SinOsc.ar(fr), g, 0.1, h);
Pan2.ar(Ringz.ar(f, 1400, 0.04),0,5)
}.play;
)
// this is no mbira: vibrations of a bank of resonators that are
// triggered by some bouncing things that bounce one on each resonator
// mouse y controls friction
// mouse x controls gravity
(
{
var sc, g, d, z, lfo, rate;
g = MouseX.kr(0.01, 100, 1);
d = MouseY.kr(0.00001, 0.2);
sc = #[451, 495.5, 595, 676, 734.5]; //azande harp tuning by B. Guinahui
lfo = LFNoise1.kr(1, 0.005, 1);
rate = 2.4;
rate = rate * sc.size.reciprocal;
z = sc.collect { |u,i|
var f, in;
in = Decay.ar(
Mix(Impulse.ar(rate, [1.0, LFNoise0.kr(rate / 12)].rand, 0.1)), 0.001
);
in = Ringz.ar(in,
Array.fill(4, { |i| (i+1) + 0.1.rand2 }) / 2
* Decay.ar(in,0.02,rand(0.5,1), lfo) * u,
Array.exprand(4, 0.2, 1).sort
);
in = Mix(in);
f = TBall.ar(in * 10, g, d, 0.001);
in + Mix(Ringz.ar(f, u * Array.fill(4, { |i| (i+1) + 0.3.rand2 }) * 2, 0.1))
};
Splay.ar(z) * 0.8
}.play;
)
::
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