[apps/sequence] Clip default range initialisation to 0 on X range for

sequences

Change-Id: I501a397ce3016ba605bd9aca950b87a2ca295000

apps/sequence/graph/curve_view_range.cpp

@@ -1,6 +1,10 @@
 #include "curve_view_range.h"
+#include <math.h>
+#include <ion.h>
+#include <poincare.h>
 
 using namespace Shared;
+using namespace Poincare;
 
 namespace Sequence {
 
@@ -10,6 +14,53 @@ CurveViewRange::CurveViewRange(CurveViewCursor * cursor, InteractiveCurveViewRan
   m_xMin = -k_displayLeftMarginRatio*m_xMax;
 }
 
+void CurveViewRange::roundAbscissa() {
+  float xMin = m_xMin;
+  float xMax = m_xMax;
+  m_xMin = roundf((xMin+xMax)/2) - (float)Ion::Display::Width/2.0f;
+  m_xMax = roundf((xMin+xMax)/2) + (float)Ion::Display::Width/2.0f-1.0f;
+  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;
+  m_xMin = (xMin+xMax)/2 - 5.3f;
+  m_xMax = (xMin+xMax)/2 + 5.3f;
+  if (m_xMin < 0.0f) {
+    m_xMin = -k_displayLeftMarginRatio*2.0f*5.3f;
+    m_xMax = m_xMin + 2.0f*5.3f;
+  }
+  m_xGridUnit = computeGridUnit(Axis::X, m_xMin, m_xMax);
+  m_yAuto = false;
+  m_yMin = (yMin+yMax)/2 - 3.1f;
+  m_yMax = (yMin+yMax)/2 + 3.1f;
+  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;

apps/sequence/graph/curve_view_range.h

@@ -8,6 +8,9 @@ namespace Sequence {
 class CurveViewRange : public Shared::InteractiveCurveViewRange {
 public:
   CurveViewRange(Shared::CurveViewCursor * cursor, Shared::InteractiveCurveViewRangeDelegate * delegate);
+  void roundAbscissa() override;
+  void normalize() override;
+  void setTrigonometric() override;
   void setDefault() override;
 private:
   constexpr static float k_displayLeftMarginRatio = 0.05f;

apps/shared/interactive_curve_view_range.cpp

@@ -12,8 +12,8 @@ namespace Shared {
 InteractiveCurveViewRange::InteractiveCurveViewRange(CurveViewCursor * cursor, InteractiveCurveViewRangeDelegate * delegate) :
   MemoizedCurveViewRange(),
   m_yAuto(true),
-  m_cursor(cursor),
-  m_delegate(delegate)
+  m_delegate(delegate),
+  m_cursor(cursor)
 {
 }
 

apps/shared/interactive_curve_view_range.h

@@ -25,18 +25,18 @@ public:
   // Window
   void zoom(float ratio);
   void panWithVector(float x, float y);
-  void roundAbscissa();
-  void normalize();
-  void setTrigonometric();
+  virtual void roundAbscissa();
+  virtual void normalize();
+  virtual void setTrigonometric();
   virtual void setDefault();
   void centerAxisAround(Axis axis, float position);
   void panToMakePointVisible(float x, float y, float topMarginRatio, float rightMarginRatio, float bottomMarginRation, float leftMarginRation);
 protected:
   bool m_yAuto;
+  InteractiveCurveViewRangeDelegate * m_delegate;
 private:
   constexpr static float k_minFloat = 1E-8f;
   CurveViewCursor * m_cursor;
-  InteractiveCurveViewRangeDelegate * m_delegate;
 };
 
 typedef void (InteractiveCurveViewRange::*ParameterSetterPointer)(float);