From e44a7e37b6c7b5961adaffc62b9042b8d442938e Mon Sep 17 00:00:00 2001
From: mensonge <mensonge@b3834d28-1941-0410-a4f8-b48e95affb8f>
Date: Thu, 13 Nov 2008 09:49:11 +0000
Subject: New feature: basic Ajax suggestion for tags and implementation of
 Dojo toolkit

git-svn-id: https://semanticscuttle.svn.sourceforge.net/svnroot/semanticscuttle/trunk@151 b3834d28-1941-0410-a4f8-b48e95affb8f
---
 includes/js/dojox/math/_base.js | 122 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 includes/js/dojox/math/_base.js

(limited to 'includes/js/dojox/math/_base.js')

diff --git a/includes/js/dojox/math/_base.js b/includes/js/dojox/math/_base.js
new file mode 100644
index 0000000..ef2243c
--- /dev/null
+++ b/includes/js/dojox/math/_base.js
@@ -0,0 +1,122 @@
+if(!dojo._hasResource["dojox.math._base"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dojox.math._base"] = true;
+dojo.provide("dojox.math._base");
+
+dojo.mixin(dojox.math, {
+	degreesToRadians: function(/* Number */n){
+		//	summary
+		//	Convert the passed number to radians.
+		return (n*Math.PI)/180;	// Number
+	},
+	radiansToDegrees: function(/* Number */n){
+		//	summary
+		//	Convert the passed number to degrees.
+		return (n*180)/Math.PI;	//	Number
+	},
+
+	factoral: function(/* Number */n){
+		//	summary
+		//	Return the factoral of n.
+		if(n<1){ 
+			return 0;	// Number
+		}
+		var ret=1;
+		for(var i=1; i<=n; i++){
+			ret*=i;
+		}
+		return ret;	// Number
+	},
+	permutations: function(/* Number */n, /* Number */k){
+		//	summary
+		//	TODO
+		if(n==0 || k==0){ 
+			return 1; 	// Number
+		}
+		return (this.factoral(n)/this.factoral(n-k));
+	},
+	combinations: function(/* Number */n, /* Number */r){
+		//	summary
+		//	TODO
+		if(n==0 || r==0){ 
+			return 1; 	//	Number
+		}
+		return (this.factoral(n)/(this.factoral(n-r)*this.factoral(r)));	// Number
+	},
+	bernstein: function(/* Number */t, /* Number */n, /* Number */ i){
+		//	summary
+		//	TODO
+		return (this.combinations(n, i)*Math.pow(t, i)*Math.pow(1-t, n-i));	//	Number
+	},
+	gaussian: function(){
+		//	summary
+		//	Return a random number based on the Gaussian algo.
+		var k=2;
+		do{
+			var i=2*Math.random()-1;
+			var j=2*Math.random()-1;
+			k = i*i+j*j;
+		}while(k>=1);
+		return (i * Math.sqrt((-2*Math.log(k))/k));	//	Number
+	},
+
+	//	basic statistics
+	sd: function(/* Array */a){
+		//	summary
+		//	Returns the standard deviation of the passed arguments.
+		return Math.sqrt(this.variance(a));	//	Number
+	},
+	variance: function(/* Array */a){
+		//	summary
+		//	Find the variance in the passed array of numbers.
+		var mean=0, squares=0;
+		dojo.forEach(a, function(item){
+			mean+=item;
+			squares+=Math.pow(item,2);
+		});
+		return (squares/a.length)-Math.pow(mean/a.length, 2);	//	Number
+	},
+
+	//	create a range of numbers
+	range: function(/* Number */a, /* Number? */b, /* Number? */step){
+		//	summary
+		//	Create a range of numbers based on the parameters.
+		if(arguments.length<2){
+			b=a,a=0;
+		}
+		var s=step||1;
+		var range=[];
+		if(s>0){
+			for(var i=a; i<b; i+=s){
+				range.push(i);
+			}
+		}else{
+			if(s<0){
+				for(var i=a; i>b; i+=s){
+					range.push(i);
+				}
+			}else{
+				throw new Error("dojox.math.range: step must not be zero.");
+			}
+		}
+		return range; 	// Array
+	},
+	distance: function(/* Array */a, /* Array */b){
+		//	summary
+		//	Calculate the distance between point A and point B
+		return Math.sqrt(Math.pow(b[0]-a[0],2)+Math.pow(b[1]-a[1],2));	//	Number
+	},
+	midpoint: function(/* Array */a, /* Array */b){
+		//	summary
+		//	Calculate the midpoint between points A and B.  A and B may be multidimensional.
+		if(a.length!=b.length){
+			console.error("dojox.math.midpoint: Points A and B are not the same dimensionally.", a, b);
+		}
+		var m=[];
+		for(var i=0; i<a.length; i++){
+			m[i]=(a[i]+b[i])/2;
+		}
+		return m;	//	Array
+	}
+});
+
+}
-- 
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