source: Dev/trunk/src/client/dojox/charting/scaler/primitive.js

define(["dojo/_base/lang"], 
  function(lang){
        var primitive = lang.getObject("dojox.charting.scaler.primitive", true);
        return lang.mixin(primitive, {
                buildScaler: function(/*Number*/ min, /*Number*/ max, /*Number*/ span, /*Object*/ kwArgs){
                        if(min == max){
                                // artificially extend bounds
                                min -= 0.5;
                                max += 0.5;
                                // now the line will be centered
                        }
                        return {
                                bounds: {
                                        lower: min,
                                        upper: max,
                                        from:  min,
                                        to:    max,
                                        scale: span / (max - min),
                                        span:  span
                                },
                                scaler: primitive
                        };
                },
                buildTicks: function(/*Object*/ scaler, /*Object*/ kwArgs){
                        return {major: [], minor: [], micro: []};       // Object
                },
                getTransformerFromModel: function(/*Object*/ scaler){
                        var offset = scaler.bounds.from, scale = scaler.bounds.scale;
                        return function(x){ return (x - offset) * scale; };     // Function
                },
                getTransformerFromPlot: function(/*Object*/ scaler){
                        var offset = scaler.bounds.from, scale = scaler.bounds.scale;
                        return function(x){ return x / scale + offset; };       // Function
                }
        });
});