/*
DynAPI Distribution
dynapi.functions.Math extension
Math and Path functions
*/
var f = dynapi.functions;
f.Math = {}; // used by dynapi.library
// Math Functions --------------------------
f.radianToDegree = function(radian) {
return radian*180/Math.PI
};
f.degreeToRadian = function(degree) {
return degree*Math.PI/180
};
f.sintable = function(lsin) {
for (var i=0; i<361; i+=1) lsin[i]=Math.sin((i/180)*Math.PI);
};
f.costable = function(lcos) {
for (var i=0; i<361; i+=1) lcos[i]=Math.cos((i/180)*Math.PI);
};
f.getRandomNumber = function(n) {
var t=new Date();
n=(n)? n: parseInt(Math.random()*10000);
return Math.round((Math.abs(Math.sin(t.getTime()))*(Math.random()*1000)))%n+1;
};
f.getGUID = function() { // Globally Unique ID
var n1,n2,n3,n4;
var l,r,m,c=Math.random()+''
c=c.substr(c.indexOf('.')+1);
m=(c.length-1)/2;
l=c.substr(0,m); r=c.substr(m);
n1=this.getRandomNumber(1000);
n2=this.getRandomNumber(255);n3=this.getRandomNumber(255);n4=this.getRandomNumber(255);
n2 = (n2 < 16 ? '0' : '') + n2.toString(16);
n3 = (n3 < 16 ? '0' : '') + n3.toString(16);
n4 = (n4 < 16 ? '0' : '') + n4.toString(16);
return (n1+n2+'-'+l+'-'+n3+n4+'-'+r).toUpperCase();
};
// Path Functions ------------------------
// Combines separate [x1,x2],[y1,y2] arrays into a path array [x1,y1,x2,y2]
f.interlacePaths = function (x,y) {
var l = Math.max(x.length,y.length);
var a = new Array(l*2);
for (var i=0; i<l; i++) {
a[i*2] = x[i];
a[i*2+1] = y[i];
}
return a;
};
// Returns correct angle in radians between 2 points
f.getNormalizedAngle = function (x1,y1,x2,y2) {
var distx = Math.abs(x1-x2);
var disty = Math.abs(y1-y2);
if (distx==0 && disty==0) angle = 0;
else if (distx==0) angle = Math.PI/2;
else angle = Math.atan(disty/distx);
if (x1<x2) {
if (y1<y2) angle = Math.PI*2-angle;
}
else {
if (y1<y2) angle = Math.PI+angle;
else angle = Math.PI-angle;
}
return angle;
};
// Generates a path between 2 points in N steps
f.generateLinePath = function(x1,y1,x2,y2,N) {
if (N==0) return [];
var dx = (x2 == x1)? 0 : (x2 - x1)/N;
var dy = (y2 == y1)? 0 : (y2 - y1)/N;
var path = new Array();
for (var i=0;i<=N;i++) {
path[i*2] = Math.round(x1 + i*dx);
path[i*2+1] = Math.round(y1 + i*dy);
}
return path;
};