/* 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; };