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
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
// crossover J & J
// from cellsbutton02 yogyakarta performance
// -jrml aug2008
W=640
H=480
set_resolution(W,H);
audio = new AudioJack("alsa_pcm:capture_1", 2048, 44100);
geo = new GeometryLayer();
geo.activate(true);
geo.start();
geo.set_fps();
add_layer(geo);
shift=0;
draw=0;
mode=0;
kbd = new KeyboardController();
register_controller(kbd);
linedraw = function(x0,y0,x1,y1) {
if(draw==0) geo.line(x0,y0,x1,y1);
else if(draw==1) geo.aaline(x0,y0,x1,y1);
}
kbd.pressed_p = function() { shift++; }
kbd.pressed_o = function() { shift--; }
kbd.released_a = function() { draw=1; };
kbd.released_s = function() { draw=0; };
kbd.released_b = function() {
if(mode==1) mode=0;
else mode=1;
};
kbd.released_q = function() { quit(); }
kbd.released_r = function() {
if(reset("crossover.js")) {
rem_controller(this);
echo("reset ok");
}
return true;
};
center_x = W/2;
center_y = H/2;
crossfat = 10;
smallcross = function(x,y,len) {
linedraw(x-len,y-len,x+len,y+len);
linedraw(x-len,y+len,x+len,y-len);
};
wave = new Array();
bang = new TriggerController();
bang.frame = function() {
audio.fft();
geo.color(0,0,0,50);
geo.rectangle_fill(0,0,W,H);
geo.color( 0xff, 0xff, 0xff, 0xff );
if(mode==1) { // small crosses
hc1 = audio.get_harmonic(2);
hc2 = audio.get_harmonic(12);
crossfat = hc2*16;
if(crossfat<16) crossfat=16;
crosswide = hc1*8;
wave.unshift(crosswide);
if(wave.length < W/16) return;
/*
echo("crossfat = " + crossfat);
echo("diagonals = " + diago1 + " x " + diago2);
*/
for(xx=0; xx<W/crossfat; xx++) {
for(yy=0; yy<H/crossfat; yy++) {
smallcross(center_x+(xx*crossfat),
center_y+(yy*crossfat),
wave[xx]);
smallcross(center_x-(xx*crossfat),
center_y-(yy*crossfat),
wave[xx]);
smallcross(center_x+(xx*crossfat),
center_y-(yy*crossfat),
wave[xx]);
smallcross(center_x-(xx*crossfat),
center_y+(yy*crossfat),
wave[xx]);
}
}
wave.pop();
} else { // wired cross
for(c=0;c<16;c++) {
hc = (audio.get_harmonic(c) * 8) + shift*2;
p = c*8;
xphc = center_x+hc;
xmhc = center_x-hc;
xpp = center_x+p;
xmp = center_x-p;
yphc = center_y+hc;
ymhc = center_y-hc;
ypp = center_y+p;
ymp = center_y-p;
linedraw(xpp, ypp, xphc, yphc);
linedraw(xpp, ypp, xmhc, ymhc);
linedraw(xpp, ypp, xphc, ymhc);
linedraw(xpp, ypp, xmhc, yphc);
linedraw(xmp, ymp, xphc, yphc);
linedraw(xmp, ymp, xmhc, ymhc);
linedraw(xmp, ymp, xphc, ymhc);
linedraw(xmp, ymp, xmhc, yphc);
linedraw(xmp, ypp, xphc, yphc);
linedraw(xmp, ypp, xmhc, ymhc);
linedraw(xmp, ypp, xphc, ymhc);
linedraw(xmp, ypp, xmhc, yphc);
linedraw(xpp, ymp, xphc, yphc);
linedraw(xpp, ymp, xmhc, ymhc);
linedraw(xpp, ymp, xphc, ymhc);
linedraw(xpp, ymp, xmhc, yphc);
}
}
}
register_controller(bang);
gc();
|
