/usr/share/games/flightgear/Phi/topics/Tools/Holding.js is in flightgear-phi 2016.4.2+dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 | define([
'jquery', 'knockout', 'text!./Holding.html', 'sprintf', 'kojqui/button', 'kojqui/spinner'
], function(jquery, ko, htmlString, sprintf) {
function ViewModel(params) {
var self = this;
function normDeg(val, min, max) {
var d = max - min;
while (val >= max)
val -= d;
while (val < min)
val += d;
return val;
}
self.standard = ko.observable(true);
self.nonStandard = ko.pureComputed(function() {
return false == self.standard();
});
self.inboundTrack = ko.observable(0);
self.heading = ko.observable(270);
self.entry = ko.observable("");
self.entryClass = function(p) {
console.log(p, self.entry());
if (p == self.entry())
return 'holding-pattern-' + p;
else
return 'active-holding-pattern-' + p;
}
self.holdingTransform = ko.pureComputed(function() {
return sprintf.sprintf("rotate(%f 50 50)", self.inboundTrack());
});
self.trackTransform = ko.pureComputed(function() {
return sprintf.sprintf("rotate(%f 50 50)", self.heading());
});
function test() {
var v = [ -1, 0 ];
var phi = 0 * Math.PI/180;
var cosPhi = Math.cos(phi);
var sinPhi = Math.sin(phi);
var m = [ [ cosPhi, sinPhi ], [ -sinPhi, cosPhi ] ];
var r = [ m[0][0] * v[0] + m[1][0]*v[1], m[0][1] * v[0] + m[1][1]*v[1]];
console.log(v,m,r);
}
function moveOnArc( targetHeading, r, dir ) {
dir = dir || 1;
var phi = targetHeading * Math.PI/180;
var cosPhi = Math.cos(phi);
var sinPhi = Math.sin(phi);
var x = dir*r*(1- cosPhi);
var y = r * sinPhi;
return [ Number(x.toFixed(1)), Number(-y.toFixed(1)) ];
}
function moveStraight( heading, dist ) {
var phi = heading * Math.PI/180;
var cosPhi = Math.cos(phi);
var sinPhi = Math.sin(phi);
var x = dist * sinPhi;
var y = dist * cosPhi;
return [ Number(x.toFixed(1)), Number(-y.toFixed(1)) ];
}
self.trackDraw = ko.pureComputed(function() {
function entryProcedure(s, t, h) {
var d = normDeg(t - h, -180, 180);
var reply = "";
var dir = s ? 1 : -1;
if ((s && d >= -110 && d < 70) || (!s && d >= -70 && d < 110)) {
self.entry("direct");
// turn to outbound track
var turn = normDeg(dir*d+180,0,360);
var p = moveOnArc(turn, 7.5, dir );
reply += sprintf.sprintf(" a 7.5 7.5, 0, %d, %d, %f %f ", turn>180?1:0, s?1:0, p[0], p[1] );
// fly outbound
p = moveStraight(d+180, 25);
reply += sprintf.sprintf(" l %f,%f", p[0], p[1] );
// turn back to the holding pattern, intercept inbound
p = moveStraight(d-dir*90, 15 );
reply += sprintf.sprintf(" a 7.5 7.5, 0, %d, %d, %f %f ", 0, s?1:0, p[0], p[1] );
// and to the fix
reply += " L50,50";
} else if ((s && d >= -180 && d < -110) || (!s && d >= 110 && d < 180)) {
self.entry("teardrop");
// fly outbount for 1minute
var p = moveStraight(d+180-dir*30, 30 );
reply += sprintf.sprintf(" l %f,%f", p[0], p[1] );
// turn back to station
p = moveOnArc(d-dir*30, 7.5, dir );
reply += sprintf.sprintf(" a 7.5 7.5, 0, %d, %d, %f %f ", 0, s?1:0, p[0], p[1] );
reply += " L50,50";
} else if ((s && d >= 70 && d < 180) || (!s && d >= -180 && d < -70)) {
self.entry("parallel");
// turn to outbound track
var turn = normDeg(dir*d+180,0,360);
var p = moveOnArc(180-dir*d, 7.5, -dir );
reply += sprintf.sprintf(" a 7.5 7.5, 0, %d, %d, %f %f ", 0, s?0:1, p[0], p[1] );
// fly outbound
p = moveStraight(d+180, 25);
reply += sprintf.sprintf(" l %f,%f", p[0], p[1] );
// turn back to the holding pattern, intercept inbound
p = moveStraight(d+dir*90, 15 );
reply += sprintf.sprintf(" a 7.5 7.5, 0, %d, %d, %f %f ", 0, s?0:1, p[0], p[1] );
reply += " L50,50";
} else {
self.entry("unknown");
}
return reply;
}
return "M50,100 v-50 " + entryProcedure(self.standard(), self.inboundTrack(), self.heading());
});
self.setStandard = function(a, b) {
self.standard(true);
}
self.setNonStandard = function(a, b) {
self.standard(false);
}
self.inboundTrackSpin = function(event, ui) {
$(event.target).spinner("value", normDeg(ui.value, 0, 360));
return false;
}
self.headingSpin = function(event, ui) {
$(event.target).spinner("value", normDeg(ui.value, 0, 360));
return false;
}
}
// ViewModel.prototype.dispose = function() {
// }
// Return component definition
return {
viewModel : ViewModel,
template : htmlString
};
});
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