Range.cc
1.56 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
/*
* Range.cc
*
* Created on: 17 déc. 2013
* Author: CS
*/
#include "Range.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();
if(lMin < lMax) {
if ( (lMin < 1 && lMin > -1) &&
(lMax < 1 && lMax > -1) ) {
lMin = extend2LowerValue(lMin);
lMax = extend2UpperValue(lMax);
} else {
lMax = ceil(lMax);
lMin = floor(lMin);
}
} else {
if ( (lMin < 1 && lMin > -1) &&
(lMax < 1 && lMax > -1) ) {
lMin = extend2UpperValue(lMin);
lMax = extend2LowerValue(lMax);
} else {
lMin = ceil(lMin);
lMax = floor(lMax);
}
}
Range lRange (lMin, lMax);
lRange._extend = pRange._extend;
return lRange;
}
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;
}
}