Use external getAxisData and getAbscissa methods

src/axis.js

@@ -421,171 +421,6 @@ c3_chart_internal_fn.tuneAxis = function(sync, callback){
 
 };
 
-function log10(n) {
-    return Math.log(n) / Math.log(10);
-}
-
-function log(n, m) {
-    return Math.log(n) / Math.log(m);
-}
-
-c3_chart_internal_fn.getAbscissa =  function(type, min, max) {
-    var $$ = this; 
-    var axis = {};
-
-    switch(type) {
-        case 'area':
-        case 'area-stacked':
-        case 'area-stacked-100':
-            axis.min = 1;
-            axis.max = max;
-            axis.step = 1;
-            break;
-        case 'bar':
-        case 'bar-stacked':
-        case 'bar-stacked-100':
-            axis = $$.getAxisData(min, max, true);
-            break;
-        case 'column':
-        case 'column-stacked':
-        case 'column-stacked-100':
-            axis.min = 1;
-            axis.max = max;
-            axis.step = 1;
-            break;
-        case 'line-m':
-        case 'line':
-        case 'line-stacked-m':
-        case 'line-stacked':
-        case 'line-stacked-100-m':
-        case 'line-stacked-100':
-            axis.min = 1;
-            axis.max = max;
-            axis.step = 1;
-            break;
-        case 'xy-m':
-        case 'xy-smooth-m':
-        case 'xy-smooth':
-        case 'xy-straight-m':
-        case 'xy-straight':
-            axis = $$.getAxisData(min, max, true);
-            break;
-        default:
-            throw new Error("Unsupported type for axis " + type);
-    }
-    return axis;
-};
-
-c3_chart_internal_fn.getAxisData =  function(min, max, isAbscissa) {
-    var $$ = this;
-
-    isAbscissa = isAbscissa || false;
-    var axis = {};
-
-    if (min === 0 && max === 0) {
-        axis.step = 0.1;
-        axis.min = 0;
-        axis.max = 1;
-        return axis;
-    }
-
-    var min4calc = 0;
-    var max4calc = 0;
-    if (min != max) {
-        min4calc = Math.min(min);
-        max4calc = Math.max(max);
-    }
-    else {
-        min4calc = signMin > 0 ? 0 : min;
-        max4calc = signMin > 0 ? max : 0;
-    }
-
-    var signMin = min4calc === 0 ? 0 : min4calc / Math.abs(min4calc);
-    var signMax = max4calc === 0 ? 0 : max4calc / Math.abs(max4calc);
-
-    var absMax4calc = Math.max(Math.abs(min), Math.abs(max));
-    var absMin4calc = Math.min(Math.abs(min), Math.abs(max));
-
-    var signAbsMax4calc = Math.abs(max) > Math.abs(min) ? signMax : signMin;
-    var signAbsMin4calc = Math.abs(max) < Math.abs(min) ? signMax : signMin;
-
-    var isBrokenAxis = Math.abs(Math.abs(max) - Math.abs(min)) < (Math.abs(max) > Math.abs(min)?Math.abs(max):Math.abs(min)) * 0.2 && signMin == signMax;
-
-    var delta = 0;
-
-    if (isBrokenAxis) {
-        delta = Math.abs(max4calc - min4calc);
-    }
-    else {
-        if (signMin == signMax) {
-                delta = Math.abs(max4calc) > Math.abs(min4calc) ? Math.abs(max4calc) : Math.abs(min4calc);
-        }
-        else {
-            delta = Math.abs(max4calc - min4calc);
-        }
-    }
-
-    var basePow = log10(delta);
-    var normalize = delta / Math.pow(10, Math.floor(basePow));
-    var peak = normalize * 1.05;
-
-    if (isBrokenAxis) {
-        peak = peak * 1.5;
-    }
-
-    var normalizestep = 0;
-    if(!isAbscissa) {
-            if (peak < 2) {
-                normalizestep = 0.2;
-            }
-            else if (peak < 5) {
-                normalizestep = 0.5;
-            }
-            else if (peak > 10) {
-                    normalizestep = 2;
-            }
-            else {
-                normalizestep = 1;
-            }
-    } else {
-            if (peak < 1.8) {
-                normalizestep = 0.2;
-            }
-            else if (peak < 4.5) {
-                normalizestep = 0.5;
-            }
-            else if (peak > 9) {
-                normalizestep = 2;
-            }
-            else {
-                normalizestep = 1;
-            }
-    }
-
-    axis.step = normalizestep * Math.pow(10, Math.floor(basePow));
-
-    var axisMax = 0;
-    var axisMin = 0;
-
-    if (!isBrokenAxis) {
-        if (signMin == signMax || signMin === 0 || signMax === 0) {
-            axisMin = 0;
-            axisMax = Math.ceil(absMax4calc * 1.05 / axis.step) * axis.step * (signAbsMax4calc);
-        }
-        else {
-            axisMax = Math.ceil(max4calc * 1.05 / axis.step) * (axis.step);
-            axisMin = Math.floor(((max4calc - (max4calc - min4calc) * 1.05)) / axis.step) * (axis.step);
-        }
-    }
-    else {
-        axisMin = Math.floor((absMin4calc - (absMax4calc - absMin4calc) / 2 )/ axis.step) * axis.step * signAbsMin4calc;
-        axisMax = Math.ceil(((absMax4calc - absMin4calc) * 1.075 + absMin4calc) / axis.step) * axis.step * signAbsMax4calc ;
-    }
-    axis.min = Math.min(axisMin, axisMax);
-    axis.max = Math.max(axisMin, axisMax);
-    return axis;
-};
-
 c3_chart_internal_fn.findMinMax = function () {
     var $$ = this;
     var minY, maxY, minX, maxX;

src/core.js

@@ -7,9 +7,23 @@ var c3init = function(module){
     return c3;
 }
 
+var injectedMethods = ['getAxisData', 'getAbscissa'];
+
 function Chart(config) {
     var $$ = this.internal = new ChartInternal(this);
     $$.ed3Config = config.ed3Config;
+    
+    // We have to pass some methods from ed3
+    if(!config.inject) {
+        throw new Error('You have to set config.inject');
+    }
+    injectedMethods.forEach(function(fn){
+        if(typeof config.inject[fn] !== 'function'){
+            throw new Error('You have to set '+fn+' function in config');
+        }
+        $$[fn] = config.inject[fn];
+    });
+
     $$.loadConfig(config);
     $$.init();