Merge pull request #254 from RedGl0w/additional_result_trigo

Changes to the trigonometry additional result

apps/calculation/additional_outputs/trigonometry_graph_cell.cpp

@@ -8,7 +8,8 @@ namespace Calculation {
 
 TrigonometryGraphView::TrigonometryGraphView(TrigonometryModel * model) :
   CurveView(model),
-  m_model(model)
+  m_model(model),
+  m_shouldDisplayTan(false)
 {
 }
 
@@ -22,17 +23,33 @@ void TrigonometryGraphView::drawRect(KDContext * ctx, KDRect rect) const {
   drawCurve(ctx, rect, 0.0f, 2.0f*M_PI, M_PI/180.0f, [](float t, void * model, void * context) {
       return Poincare::Coordinate2D<float>(std::cos(t), std::sin(t));
     }, nullptr, nullptr, true, Palette::SecondaryText, false);
-  // Draw dashed segment to indicate sine and cosine
+
-  drawHorizontalOrVerticalSegment(ctx, rect, Axis::Vertical, c, 0.0f, s, Palette::CalculationTrigoAndComplexForeground, 1, 3);
+  if (!m_shouldDisplayTan) {
-  drawHorizontalOrVerticalSegment(ctx, rect, Axis::Horizontal, s, 0.0f, c, Palette::CalculationTrigoAndComplexForeground, 1, 3);
+    // Draw dashed segment to indicate sine and cosine
+    drawHorizontalOrVerticalSegment(ctx, rect, Axis::Vertical, c, 0.0f, s, Palette::CalculationTrigoAndComplexForeground, 1, 3);
+    drawHorizontalOrVerticalSegment(ctx, rect, Axis::Horizontal, s, 0.0f, c, Palette::CalculationTrigoAndComplexForeground, 1, 3);
+  }
+
+  if (m_shouldDisplayTan) {
+    float t = std::tan(m_model->angle());
+    drawHorizontalOrVerticalSegment(ctx, rect, Axis::Vertical, 1.0f, m_model->yMin(), m_model->yMax(), Palette::SecondaryText, 2);
+    drawSegment(ctx, rect, 0.0f, 0.0f, 1.0f, t, Palette::SecondaryText, false);
+    drawDot(ctx, rect, 1.0f, t, Palette::CalculationTrigoAndComplexForeground, Size::Large);
+    drawLabel(ctx, rect, 0.0f, t, "tan(θ)", Palette::CalculationTrigoAndComplexForeground, CurveView::RelativePosition::Before, CurveView::RelativePosition::None);
+    drawHorizontalOrVerticalSegment(ctx, rect, Axis::Horizontal, t, 0.0f, 1.0f, Palette::CalculationTrigoAndComplexForeground, 1, 3);
+  }
+
   // Draw angle position on the circle
-  drawDot(ctx, rect, c, s, Palette::CalculationTrigoAndComplexForeground, Size::Large);
+  drawDot(ctx, rect, c, s, m_shouldDisplayTan ? Palette::SecondaryText : Palette::CalculationTrigoAndComplexForeground, m_shouldDisplayTan ? Size::Tiny : Size::Large);
   // Draw graduations
   drawLabelsAndGraduations(ctx, rect, Axis::Vertical, false, true);
   drawLabelsAndGraduations(ctx, rect, Axis::Horizontal, false, true);
-  // Draw labels
+
-  drawLabel(ctx, rect, 0.0f, s, "sin(θ)", Palette::CalculationTrigoAndComplexForeground, c >= 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After, CurveView::RelativePosition::None);
+  if (!m_shouldDisplayTan) {
-  drawLabel(ctx, rect, c, 0.0f, "cos(θ)", Palette::CalculationTrigoAndComplexForeground, CurveView::RelativePosition::None, s >= 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After);
+    // Draw labels
+    drawLabel(ctx, rect, 0.0f, s, "sin(θ)", Palette::CalculationTrigoAndComplexForeground, c >= 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After, CurveView::RelativePosition::None);
+    drawLabel(ctx, rect, c, 0.0f, "cos(θ)", Palette::CalculationTrigoAndComplexForeground, CurveView::RelativePosition::None, s >= 0.0f ? CurveView::RelativePosition::Before : CurveView::RelativePosition::After);
+  }
 }
 
 }

apps/calculation/additional_outputs/trigonometry_graph_cell.h

@@ -11,13 +11,16 @@ class TrigonometryGraphView : public Shared::CurveView {
 public:
   TrigonometryGraphView(TrigonometryModel * model);
   void drawRect(KDContext * ctx, KDRect rect) const override;
+  void setShouldDisplayTan(bool shouldDisplayTan) { m_shouldDisplayTan = shouldDisplayTan; };
 private:
   TrigonometryModel * m_model;
+  bool m_shouldDisplayTan;
 };
 
 class TrigonometryGraphCell : public IllustrationCell {
 public:
   TrigonometryGraphCell(TrigonometryModel * model) : m_view(model) {}
+  void setShouldDisplayTan(bool shouldDisplayTan) { m_view.setShouldDisplayTan(shouldDisplayTan); };
 private:
   View * view() override { return &m_view; }
   TrigonometryGraphView m_view;

apps/calculation/additional_outputs/trigonometry_list_controller.cpp

@@ -18,7 +18,10 @@ Poincare::Constant toConstant(Expression e) {
 }
 
 void TrigonometryListController::setExpression(Expression e) {
-  assert(e.type() == ExpressionNode::Type::Cosine || e.type() == ExpressionNode::Type::Sine);
+  assert(e.type() == ExpressionNode::Type::Cosine || e.type() == ExpressionNode::Type::Sine || e.type() == ExpressionNode::Type::Tangent);
+  bool shouldDisplayTan = e.type() == ExpressionNode::Type::Tangent;
+  m_graphCell.setShouldDisplayTan(shouldDisplayTan);
+  m_model.setShouldDisplayTan(shouldDisplayTan);
 
   Poincare::Context * context = App::app()->localContext();
   Poincare::Preferences * preferences = Poincare::Preferences::sharedPreferences();
@@ -58,6 +61,7 @@ void TrigonometryListController::setExpression(Expression e) {
   IllustratedListController::setExpression(angleExpression);
 
   // Fill calculation store
+  m_calculationStore.push("tan(θ)", context, CalculationHeight);
   m_calculationStore.push("sin(θ)", context, CalculationHeight);
   m_calculationStore.push("cos(θ)", context, CalculationHeight);
   m_calculationStore.push("θ", context, CalculationHeight);

apps/calculation/additional_outputs/trigonometry_model.cpp

@@ -8,4 +8,22 @@ TrigonometryModel::TrigonometryModel() :
 {
 }
 
+float TrigonometryModel::yMin() const {
+  if (m_shouldDisplayTan) {
+    return -1.1f;
+  }
+  return yCenter() - yHalfRange();
+}
+
+float TrigonometryModel::yMax() const {
+  if (m_shouldDisplayTan) {
+    float t = std::tan(angle());
+    if (t <= 1.2f) {
+      return 1.2f;
+    }
+    return 1.2f * std::tan(angle());
+  }
+  return yCenter() + yHalfRange();
+}
+
 }

apps/calculation/additional_outputs/trigonometry_model.h

@@ -14,11 +14,12 @@ public:
   // CurveViewRange
   float xMin() const override { return -k_xHalfRange; }
   float xMax() const override { return k_xHalfRange; }
-  float yMin() const override { return yCenter() - yHalfRange(); }
+  float yMin() const override;
-  float yMax() const override { return yCenter() + yHalfRange(); }
+  float yMax() const override;
 
   void setAngle(float f) { m_angle = f; }
   float angle() const { return m_angle*(float)M_PI/(float)Poincare::Trigonometry::PiInAngleUnit(Poincare::Preferences::sharedPreferences()->angleUnit()); }
+  void setShouldDisplayTan(bool shouldDisplayTan) { m_shouldDisplayTan = shouldDisplayTan; }
 private:
   constexpr static float k_xHalfRange = 2.1f;
   // We center the yRange around the semi-circle where the angle is
@@ -33,6 +34,7 @@ private:
   float yHalfRange() const { return IllustratedListController::k_illustrationHeight*k_xHalfRange/(Ion::Display::Width - Metric::PopUpRightMargin - Metric::PopUpLeftMargin); }
 
   float m_angle;
+  bool m_shouldDisplayTan;
 };
 
 }

apps/calculation/calculation.cpp

@@ -251,8 +251,11 @@ Calculation::AdditionalInformationType Calculation::additionalInformationType(Co
    * - > input: 2cos(2) - cos(2)
    *   > output: cos(2)
    */
-  if (input().isDefinedCosineOrSine(context, complexFormat, preferences->angleUnit()) || o.isDefinedCosineOrSine(context, complexFormat, preferences->angleUnit())) {
+   if (i.isDefinedCosineOrSineOrTangent(context, complexFormat, preferences->angleUnit())) {
-    return AdditionalInformationType::Trigonometry;
+    return AdditionalInformationType::TrigonometryInput;
+  }
+  if (o.isDefinedCosineOrSineOrTangent(context, complexFormat, preferences->angleUnit())) {
+    return AdditionalInformationType::TrigonometryOutput;
   }
   if (o.hasUnit()) {
     Expression unit;

apps/calculation/calculation.h

@@ -40,7 +40,8 @@ public:
     Integer,
     Rational,
     SecondDegree,
-    Trigonometry,
+    TrigonometryInput,
+    TrigonometryOutput,
     Unit,
     Matrix,
     Complex

apps/calculation/history_controller.cpp

@@ -103,12 +103,12 @@ bool HistoryController::handleEvent(Ion::Events::Event event) {
         vc = &m_complexController;
       } else if (additionalInfoType == Calculation::AdditionalInformationType::SecondDegree) {
         vc = &m_secondDegreeController;
-      } else if (additionalInfoType == Calculation::AdditionalInformationType::Trigonometry) {
+      } else if (additionalInfoType == Calculation::AdditionalInformationType::TrigonometryInput) {
         vc = &m_trigonometryController;
-        // Find which of the input or output is the cosine/sine
+        e = calculationAtIndex(focusRow)->input();
-        ExpressionNode::Type t = e.type();
+      } else if (additionalInfoType == Calculation::AdditionalInformationType::TrigonometryOutput) {
-        e = t == ExpressionNode::Type::Cosine || t == ExpressionNode::Type::Sine ? e : calculationAtIndex(focusRow)->input();
+        vc = &m_trigonometryController;
-      } else if (additionalInfoType == Calculation::AdditionalInformationType::Integer) {
+      }  else if (additionalInfoType == Calculation::AdditionalInformationType::Integer) {
         vc = &m_integerController;
       } else if (additionalInfoType == Calculation::AdditionalInformationType::Rational) {
         vc = &m_rationalController;

poincare/include/poincare/expression.h

@@ -183,7 +183,7 @@ public:
   bool isRationalOne() const;
   bool isRandom() const { return node()->isRandom(); }
   bool isParameteredExpression() const { return node()->isParameteredExpression(); }
-  bool isDefinedCosineOrSine(Context * context, Preferences::ComplexFormat complexFormat, Preferences::AngleUnit angleUnit) const;
+  bool isDefinedCosineOrSineOrTangent(Context * context, Preferences::ComplexFormat complexFormat, Preferences::AngleUnit angleUnit) const;
   bool isBasedIntegerCappedBy(const char * integerString) const;
   bool isDivisionOfIntegers() const;
   bool hasDefinedComplexApproximation(Context * context, Preferences::ComplexFormat complexFormat, Preferences::AngleUnit angleUnit) const;

poincare/src/expression.cpp

@@ -292,9 +292,9 @@ bool Expression::getLinearCoefficients(char * variables, int maxVariableSize, Ex
   return !isMultivariablePolynomial;
 }
 
-bool Expression::isDefinedCosineOrSine(Context * context, Preferences::ComplexFormat complexFormat, Preferences::AngleUnit angleUnit) const {
+bool Expression::isDefinedCosineOrSineOrTangent(Context * context, Preferences::ComplexFormat complexFormat, Preferences::AngleUnit angleUnit) const {
   ExpressionNode::Type t = type();
-  if (t == ExpressionNode::Type::Cosine || t == ExpressionNode::Type::Sine) {
+  if (t == ExpressionNode::Type::Cosine || t == ExpressionNode::Type::Sine || t == ExpressionNode::Type::Tangent) {
     float r = childAtIndex(0).approximateToScalar<float>(context, complexFormat, angleUnit);
     if (!std::isnan(r)) {
       return true;