https://www.whatshesaidmovie.com/wp-content/themes/visia/framework/js/pe/jquery.pixelentity.utils.geom.js

1(function ($) {
2	/*jslint undef: false, browser: true, devel: false, eqeqeq: false, bitwise: false, white: false, plusplus: false, regexp: false */ 
3	/*global jQuery,setTimeout */
4
5	$.pixelentity = $.pixelentity || {version: '1.0.0'};
6
7	$.pixelentity.Geom = {
8		getScaler: function (scaleMode,halign,valign,w,h,tw,th) {
9			
10			var info = {};
11			
12			var rw = w/tw;
13			var rh = h/th;
14			var r;
15			
16			// get scale ratio
17			if (typeof scaleMode  == 'string') {
18				switch (scaleMode) {
19					case "fill":
20					case "fillmax":
21						r = rw > rh ? rw : rh;
22						if (scaleMode == "fill") {r = Math.min(1,r);}
23					break;
24					case "fit":
25					case "fitmax":
26						r = rw < rh ? rw : rh;
27						if (scaleMode == "fit") {r = Math.min(1,r);}
28					break;
29					case "none":
30						r = 1;
31					break;
32				}
33			} else {
34				r = scaleMode;
35			}
36			
37			// scale ration
38			info.ratio = r;
39			
40			info.diff = {};
41			info.offset = {};
42			info.align = {w:halign,h:valign};
43			
44			// now compute offset with requested alignment
45			//with (info) {
46			
47			var diff = info.diff;
48			var offset = info.offset;
49			
50			diff.w = offset.w = Math.round((w-tw*r)*10000)/10000;
51			diff.h = offset.h = Math.round((h-th*r)*10000)/10000;
52			
53			switch (halign) {
54				case "center":
55				offset.w = diff.w / 2;
56				break;
57				case "left":
58					offset.w = 0;
59				break;
60			}
61		
62			switch (valign) {
63				case "center":
64					offset.h = diff.h / 2;
65				break;
66				case "top":
67					offset.h = 0;
68				break;
69			}
70				
71			//}
72			
73			
74			// return the scaler object
75			return info;
76		},
77		
78		// split a string in object
79		splitProps : function(comma,numeric) {
80			var token = comma.split(/,/);
81			
82			return numeric ? { h:parseFloat(token[0]), w:parseFloat(token[1])} : { h:token[0], w:token[1]};
83		}
84	};
85		
86}(jQuery));