curve_view_range.cpp
2.37 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
#include "curve_view_range.h"
#include <cmath>
#include <ion.h>
#include <poincare.h>
using namespace Shared;
using namespace Poincare;
namespace Sequence {
CurveViewRange::CurveViewRange(CurveViewCursor * cursor, InteractiveCurveViewRangeDelegate * delegate) :
InteractiveCurveViewRange(cursor, delegate)
{
m_xMin = -k_displayLeftMarginRatio*m_xMax;
}
void CurveViewRange::roundAbscissa() {
float xMin = m_xMin;
float xMax = m_xMax;
float newXMin = clipped(std::round((xMin+xMax)/2) - (float)Ion::Display::Width/2.0f, false);
float newXMax = clipped(std::round((xMin+xMax)/2) + (float)Ion::Display::Width/2.0f-1.0f, true);
if (std::isnan(newXMin) || std::isnan(newXMax)) {
return;
}
m_xMin = newXMin;
m_xMax = newXMax;
if (m_xMin < 0.0f) {
m_xMin = -k_displayLeftMarginRatio*(float)Ion::Display::Width;
m_xMax = m_xMin+(float)Ion::Display::Width;
}
m_xGridUnit = computeGridUnit(Axis::X, m_xMin, m_xMax);
if (m_delegate) {
m_delegate->didChangeRange(this);
}
}
void CurveViewRange::normalize() {
float xMin = m_xMin;
float xMax = m_xMax;
float yMin = m_yMin;
float yMax = m_yMax;
float newXMin = clipped((xMin+xMax)/2 - 5.3f, false);
float newXMax = clipped((xMin+xMax)/2 + 5.3f, true);
if (!std::isnan(newXMin) && !std::isnan(newXMax)) {
m_xMin = newXMin;
m_xMax = newXMax;
m_xGridUnit = computeGridUnit(Axis::X, m_xMin, m_xMax);
}
if (m_xMin < 0.0f) {
m_xMin = -k_displayLeftMarginRatio*2.0f*5.3f;
m_xMax = m_xMin + 2.0f*5.3f;
}
m_yAuto = false;
float newYMin = clipped((yMin+yMax)/2 - 3.1f, false);
float newYMax = clipped((yMin+yMax)/2 + 3.1f, true);
if (!std::isnan(newYMin) && !std::isnan(newYMax)) {
m_yMin = newYMin;
m_yMax = newYMax;
m_yGridUnit = computeGridUnit(Axis::Y, m_yMin, m_yMax);
}
}
void CurveViewRange::setTrigonometric() {
m_xMin = -k_displayLeftMarginRatio*21.0f;
m_xMax = 21.0f;
if (Preferences::sharedPreferences()->angleUnit() == Expression::AngleUnit::Degree) {
m_xMin = -k_displayLeftMarginRatio*1200;
m_xMax = 1200;
}
m_xGridUnit = computeGridUnit(Axis::X, m_xMin, m_xMax);
m_yAuto = false;
m_yMin = -1.6f;
m_yMax = 1.6f;
m_yGridUnit = computeGridUnit(Axis::Y, m_yMin, m_yMax);
}
void CurveViewRange::setDefault() {
m_xMax = 10.0f;
m_xMin = -k_displayLeftMarginRatio*m_xMax;
m_xGridUnit = computeGridUnit(Axis::X, m_xMin, m_xMax);
setYAuto(true);
}
}