Range.cc
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/*
* Range.cc
*
* Created on: 17 déc. 2013
* Author: CS
*/
#include "Range.hh"
#include "ParamData.hh"
#include "iostream"
namespace plot {
Range extendRange(Range pRange) {
// Check in term of value which is the maximum value
// and which is the minimum.
double lMin = pRange.getMin();
double lMax = pRange.getMax();
double margin = pRange.getMargin();
if(lMin < lMax) {
if ( (lMin < 1 && lMin > -1) &&
(lMax < 1 && lMax > -1) ) {
lMin = extend2LowerValue(lMin-margin*(lMax-lMin));
lMax = extend2UpperValue(lMax+margin*(lMax-lMin));
} else {
lMax = ceil(lMax+margin*(lMax-lMin));
lMin = floor(lMin-margin*(lMax-lMin));
}
} else {
if ( (lMin < 1 && lMin > -1) &&
(lMax < 1 && lMax > -1) ) {
lMin = extend2UpperValue(lMin+margin*(lMax-lMin));
lMax = extend2LowerValue(lMax-margin*(lMax-lMin));
} else {
lMin = ceil(lMin+margin*(lMax-lMin));
lMax = floor(lMax-margin*(lMax-lMin));
}
}
Range lRange (lMin, lMax);
lRange._extend = pRange._extend;
return lRange;
}
void fixRange(Range &pRange, bool isLogScale) {
if (isNAN(pRange.getMin()) && isNAN(pRange.getMax())) {
if (isLogScale) {
pRange.setMin(1.);
pRange.setMax(10.);
}
else {
pRange.setMin(0.);
pRange.setMax(1.);
}
}
else if (isNAN(pRange.getMin())) {
if (isLogScale) {
pRange.setMin(pRange.getMax() / 10.);
}
else {
pRange.setMin(pRange.getMax() - 1.);
}
}
else if (isNAN(pRange.getMax())) {
if (isLogScale) {
pRange.setMax(pRange.getMin() * 10.);
}
else {
pRange.setMax(pRange.getMin() + 1.);
}
}
else if (isApproximatelyEqual(pRange.getMin(),pRange.getMax())) {
pRange.setMin(floor(pRange.getMin()));
pRange.setMax(floor(pRange.getMin())+1);
}
}
double extend2UpperValue(double lValue) {
// this give -0.0035 => 0.0035 => -2.4... => -3
int lExp;
if(lValue > 0) {
lExp = floor(log10(lValue));
} else {
lExp = floor(log10(-1 * lValue));
}
// -0.0035 => -3.5
double lTmpValue = lValue * pow(10, abs(lExp));
// -3.5 => -3
lTmpValue = ceil(lTmpValue);
// -3 => -0.003
lValue = lTmpValue * pow(10, lExp);
return lValue;
}
double extend2LowerValue(double lValue) {
// this give -0.0035 => 0.0035 => -2.4... => -3
int lExp;
if(lValue > 0) {
lExp = floor(log10(lValue));
} else {
lExp = floor(log10(-1 * lValue));
}
// -0.0035 => -3.5
double lTmpValue = lValue * pow(10, abs(lExp));
// -3.5 => -4
lTmpValue = floor(lTmpValue);
// -4 => -0.004
lValue = lTmpValue * pow(10, lExp);
return lValue;
}
}