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This commit is contained in:
Sergey Solovyev 2012-10-04 00:00:34 +04:00
parent e3f7fd5cb1
commit a49ca358af
9 changed files with 482 additions and 442 deletions
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2
calculatorpp/res/layout/help_faq_fragment.xml
View File

@ -18,7 +18,7 @@
style="?fragmentTitleStyle"/> style="?fragmentTitleStyle"/>
<ScrollView a:layout_width="match_parent" <ScrollView a:layout_width="match_parent"
a:layout_height="match_parent"> a:layout_height="wrap_content">
<TextView <TextView
a:text="@string/c_faq_content" a:text="@string/c_faq_content"

3
calculatorpp/res/values/text_strings.xml
View File

@ -218,5 +218,8 @@
In order to fix the problem we need some information about it. It\'s highly recommended to send crash report via email (after pressing \'Ok\' button you will see all sent data in the new window).\n\n In order to fix the problem we need some information about it. It\'s highly recommended to send crash report via email (after pressing \'Ok\' button you will see all sent data in the new window).\n\n
Do you want to send crash report? Do you want to send crash report?
</string> </string>
<string name="c_prefs_graph">Graph preferences</string>
<string name="c_show_complex_graph_summary">If checked complex graph will be plotted</string>
<string name="c_show_complex_graph_title">Show complex graph</string>
</resources> </resources>

262
calculatorpp/res/xml/preferences.xml
View File

@ -1,139 +1,143 @@
<?xml version="1.0" encoding="utf-8"?> <?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android" <PreferenceScreen xmlns:a="http://schemas.android.com/apk/res/android"
xmlns:range="http://schemas.android.com/apk/res-auto"> xmlns:range="http://schemas.android.com/apk/res-auto">
<Preference <Preference
a:key="@string/p_calc_ad_free_key" a:key="@string/p_calc_ad_free_key"
a:title="@string/c_calc_ad_free_title" a:title="@string/c_calc_ad_free_title"
a:summary="@string/c_calc_ad_free_summary" a:summary="@string/c_calc_ad_free_summary"
a:defaultValue="false" a:defaultValue="false"
/> />
<org.solovyev.android.ads.AdViewPreference <org.solovyev.android.ads.AdViewPreference a:layout="@layout/admob_pref"/>
a:key="admob_01"
a:layout="@layout/admob_pref"/>
<PreferenceScreen a:title="@string/c_prefs_calculations_category"> <PreferenceScreen a:title="@string/c_prefs_calculations_category">
<org.solovyev.android.ads.AdViewPreference <org.solovyev.android.ads.AdViewPreference a:layout="@layout/admob_pref"/>
a:key="admob_02"
a:layout="@layout/admob_pref"/>
<android.preference.CheckBoxPreference <android.preference.CheckBoxPreference
a:key="@string/p_calc_round_result_key" a:key="@string/p_calc_round_result_key"
a:summary="@string/c_calc_round_result_summary" a:summary="@string/c_calc_round_result_summary"
a:title="@string/c_calc_round_result_title" a:title="@string/c_calc_round_result_title"
a:defaultValue="true"/> a:defaultValue="true"/>
<org.solovyev.android.prefs.IntegerPickerDialogPreference <org.solovyev.android.prefs.IntegerPickerDialogPreference
a:key="@string/p_calc_result_precision_key" a:key="@string/p_calc_result_precision_key"
a:title="@string/p_calc_result_precision_title" a:title="@string/p_calc_result_precision_title"
a:summary="@string/c_calc_result_precision_summary" a:summary="@string/c_calc_result_precision_summary"
a:defaultValue="5" a:defaultValue="5"
range:boundaries="0;16"/> range:boundaries="0;16"/>
<android.preference.CheckBoxPreference <android.preference.CheckBoxPreference
a:key="@string/p_calc_science_notation_key" a:key="@string/p_calc_science_notation_key"
a:summary="@string/c_calc_science_notation_summary" a:summary="@string/c_calc_science_notation_summary"
a:title="@string/c_calc_science_notation_title" a:title="@string/c_calc_science_notation_title"
a:defaultValue="false"/> a:defaultValue="false"/>
<ListPreference a:key="@string/p_calc_grouping_separator_key" <ListPreference a:key="@string/p_calc_grouping_separator_key"
a:title="@string/c_calc_grouping_separator" a:title="@string/c_calc_grouping_separator"
a:entries="@array/p_grouping_separator_names" a:entries="@array/p_grouping_separator_names"
a:summary="@string/c_calc_grouping_separator_summary" a:summary="@string/c_calc_grouping_separator_summary"
a:entryValues="@array/p_grouping_separator_values"/> a:entryValues="@array/p_grouping_separator_values"/>
<ListPreference a:key="@string/p_calc_angle_units_key" <ListPreference a:key="@string/p_calc_angle_units_key"
a:title="@string/c_calc_angle_units" a:title="@string/c_calc_angle_units"
a:entries="@array/p_angle_units_names" a:entries="@array/p_angle_units_names"
a:summary="@string/c_angle_units_summary" a:summary="@string/c_angle_units_summary"
a:entryValues="@array/p_angle_units"/> a:entryValues="@array/p_angle_units"/>
<ListPreference a:key="@string/p_calc_numeral_bases_key" <ListPreference a:key="@string/p_calc_numeral_bases_key"
a:title="@string/c_calc_numeral_bases" a:title="@string/c_calc_numeral_bases"
a:entries="@array/p_numeral_bases_names" a:entries="@array/p_numeral_bases_names"
a:summary="@string/c_numeral_bases_summary" a:summary="@string/c_numeral_bases_summary"
a:entryValues="@array/p_numeral_bases"/> a:entryValues="@array/p_numeral_bases"/>
<org.solovyev.android.prefs.IntegerPickerDialogPreference <org.solovyev.android.prefs.IntegerPickerDialogPreference
a:key="@string/p_calc_max_calculation_time_key" a:key="@string/p_calc_max_calculation_time_key"
a:title="@string/p_calc_max_calculation_time_title" a:title="@string/p_calc_max_calculation_time_title"
a:summary="@string/p_calc_max_calculation_time_summary" a:summary="@string/p_calc_max_calculation_time_summary"
a:defaultValue="5" a:defaultValue="5"
range:boundaries="3;1000"/> range:boundaries="3;1000"/>
</PreferenceScreen> <!-- <PreferenceScreen a:title="@string/c_prefs_graph">
<PreferenceScreen <android.preference.CheckBoxPreference
a:title="@string/c_prefs_appearance_category"> a:key="show_complex_graph"
a:summary="@string/c_show_complex_graph_summary"
a:title="@string/c_show_complex_graph_title"
a:defaultValue="false"/>
<org.solovyev.android.ads.AdViewPreference </PreferenceScreen>-->
a:key="admob_03"
a:layout="@layout/admob_pref"/>
<android.preference.CheckBoxPreference </PreferenceScreen>
a:key="@string/p_calc_color_display_key"
a:summary="@string/c_calc_color_display_summary"
a:title="@string/c_calc_color_display_title"
a:defaultValue="true"/>
<android.preference.CheckBoxPreference <PreferenceScreen
a:key="@string/p_calc_haptic_feedback_key" a:title="@string/c_prefs_appearance_category">
a:summary="@string/c_calc_haptic_feedback_summary"
a:title="@string/c_calc_haptic_feedback_title"
a:defaultValue="false"/>
<ListPreference a:key="@string/p_calc_haptic_feedback_duration_key" <org.solovyev.android.ads.AdViewPreference a:layout="@layout/admob_pref"/>
a:title="@string/p_calc_haptic_feedback_duration_title"
a:entries="@array/p_calc_haptic_feedback_duration_names"
a:summary="@string/p_calc_haptic_feedback_duration_summary"
a:entryValues="@array/p_calc_haptic_feedback_duration_values"/>
<ListPreference a:key="@string/p_calc_multiplication_sign_key" <android.preference.CheckBoxPreference
a:title="@string/c_calc_multiplication_sign" a:key="@string/p_calc_color_display_key"
a:entries="@array/p_multiplication_sign_values" a:summary="@string/c_calc_color_display_summary"
a:summary="@string/c_calc_multiplication_sign_summary" a:title="@string/c_calc_color_display_title"
a:entryValues="@array/p_multiplication_sign_values"/> a:defaultValue="true"/>
<ListPreference a:key="@string/p_calc_theme_key" <android.preference.CheckBoxPreference
a:title="@string/c_calc_theme" a:key="@string/p_calc_haptic_feedback_key"
a:entries="@array/p_theme_names" a:summary="@string/c_calc_haptic_feedback_summary"
a:summary="@string/c_calc_theme_summary" a:title="@string/c_calc_haptic_feedback_title"
a:entryValues="@array/p_theme_values"/> a:defaultValue="false"/>
<ListPreference a:key="@string/p_calc_layout_key" <ListPreference a:key="@string/p_calc_haptic_feedback_duration_key"
a:title="@string/c_calc_layout" a:title="@string/p_calc_haptic_feedback_duration_title"
a:entries="@array/p_layout_names" a:entries="@array/p_calc_haptic_feedback_duration_names"
a:summary="@string/c_calc_layout_summary" a:summary="@string/p_calc_haptic_feedback_duration_summary"
a:entryValues="@array/p_layout_values"/> a:entryValues="@array/p_calc_haptic_feedback_duration_values"/>
<ListPreference a:key="@string/p_calc_multiplication_sign_key"
a:title="@string/c_calc_multiplication_sign"
a:entries="@array/p_multiplication_sign_values"
a:summary="@string/c_calc_multiplication_sign_summary"
a:entryValues="@array/p_multiplication_sign_values"/>
<ListPreference a:key="@string/p_calc_theme_key"
a:title="@string/c_calc_theme"
a:entries="@array/p_theme_names"
a:summary="@string/c_calc_theme_summary"
a:entryValues="@array/p_theme_values"/>
<ListPreference a:key="@string/p_calc_layout_key"
a:title="@string/c_calc_layout"
a:entries="@array/p_layout_names"
a:summary="@string/c_calc_layout_summary"
a:entryValues="@array/p_layout_values"/>
<org.solovyev.android.prefs.FloatRangeSeekBarPreference <org.solovyev.android.prefs.FloatRangeSeekBarPreference
a:key="@string/p_drag_distance_key" a:key="@string/p_drag_distance_key"
a:title="@string/c_swipe_distance" a:title="@string/c_swipe_distance"
a:summary="@string/c_swipe_distance_summary" a:summary="@string/c_swipe_distance_summary"
a:text=" pxs" a:text=" pxs"
a:defaultValue="35;350" a:defaultValue="35;350"
range:step="10" range:step="10"
range:boundaries="10;500"/> range:boundaries="10;500"/>
<!-- <org.solovyev.android.prefs.FloatRangeSeekBarPreference <!-- <org.solovyev.android.prefs.FloatRangeSeekBarPreference
a:key="@string/p_drag_duration_key" a:key="@string/p_drag_duration_key"
a:title="Duration of drag event" a:title="Duration of drag event"
a:text=" ms" a:text=" ms"
a:defaultValue="40;2500" a:defaultValue="40;2500"
range:steps="10" range:steps="10"
range:boundaries="5;4000"/> range:boundaries="5;4000"/>
<org.solovyev.android.prefs.FloatRangeSeekBarPreference <org.solovyev.android.prefs.FloatRangeSeekBarPreference
a:key="@string/p_drag_angle_key" a:key="@string/p_drag_angle_key"
a:title="Angle of drag event" a:title="Angle of drag event"
a:text=" degrees" a:text=" degrees"
a:defaultValue="0;45" a:defaultValue="0;45"
range:steps="5" range:steps="5"
range:boundaries="0;45"/>--> range:boundaries="0;45"/>-->
<android.preference.CheckBoxPreference <android.preference.CheckBoxPreference
a:key="autoOrientation" a:key="autoOrientation"
@ -155,32 +159,30 @@
a:defaultValue="true"/> a:defaultValue="true"/>
</PreferenceScreen> </PreferenceScreen>
<PreferenceScreen <PreferenceScreen
a:title="@string/c_prefs_other_category"> a:title="@string/c_prefs_other_category">
<org.solovyev.android.ads.AdViewPreference <org.solovyev.android.ads.AdViewPreference a:layout="@layout/admob_pref"/>
a:key="admob_04"
a:layout="@layout/admob_pref"/>
<android.preference.CheckBoxPreference <android.preference.CheckBoxPreference
a:key="@string/p_calc_show_release_notes_key" a:key="@string/p_calc_show_release_notes_key"
a:summary="@string/c_calc_show_release_notes_summary" a:summary="@string/c_calc_show_release_notes_summary"
a:title="@string/c_calc_show_release_notes_title" a:title="@string/c_calc_show_release_notes_title"
a:defaultValue="true"/> a:defaultValue="true"/>
<android.preference.CheckBoxPreference <android.preference.CheckBoxPreference
a:key="@string/p_calc_use_back_button_as_prev_key" a:key="@string/p_calc_use_back_button_as_prev_key"
a:summary="@string/c_calc_use_back_button_as_prev_summary" a:summary="@string/c_calc_use_back_button_as_prev_summary"
a:title="@string/c_calc_use_back_button_as_prev_title" a:title="@string/c_calc_use_back_button_as_prev_title"
a:defaultValue="false"/> a:defaultValue="false"/>
<Preference <Preference
a:key="@string/p_clear_billing_info_key" a:key="@string/p_clear_billing_info_key"
a:summary="@string/c_clear_billing_info_summary" a:summary="@string/c_clear_billing_info_summary"
a:title="@string/c_clear_billing_info_title"/> a:title="@string/c_clear_billing_info_title"/>
</PreferenceScreen> </PreferenceScreen>
</PreferenceScreen> </PreferenceScreen>

15
calculatorpp/src/main/java/org/solovyev/android/calculator/CalculatorButtons.java
View File

@ -181,9 +181,12 @@ public final class CalculatorButtons {
final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context); final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
AndroidCalculatorEngine.Preferences.angleUnit.putPreference(preferences, angleUnits); final AngleUnit oldAngleUnits = AndroidCalculatorEngine.Preferences.angleUnit.getPreference(preferences);
if (oldAngleUnits != angleUnits) {
AndroidCalculatorEngine.Preferences.angleUnit.putPreference(preferences, angleUnits);
Toast.makeText(context, context.getString(R.string.c_angle_units_changed_to, angleUnits.name()), Toast.LENGTH_LONG).show(); Toast.makeText(context, context.getString(R.string.c_angle_units_changed_to, angleUnits.name()), Toast.LENGTH_LONG).show();
}
result = true; result = true;
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {
@ -223,9 +226,13 @@ public final class CalculatorButtons {
final NumeralBase numeralBase = NumeralBase.valueOf(directionText); final NumeralBase numeralBase = NumeralBase.valueOf(directionText);
final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context); final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
AndroidCalculatorEngine.Preferences.numeralBase.putPreference(preferences, numeralBase);
Toast.makeText(context, context.getString(R.string.c_numeral_base_changed_to, numeralBase.name()), Toast.LENGTH_LONG).show(); final NumeralBase oldNumeralBase = AndroidCalculatorEngine.Preferences.numeralBase.getPreference(preferences);
if (oldNumeralBase != numeralBase) {
AndroidCalculatorEngine.Preferences.numeralBase.putPreference(preferences, numeralBase);
Toast.makeText(context, context.getString(R.string.c_numeral_base_changed_to, numeralBase.name()), Toast.LENGTH_LONG).show();
}
result = true; result = true;
} catch (IllegalArgumentException e) { } catch (IllegalArgumentException e) {

6
calculatorpp/src/main/java/org/solovyev/android/calculator/CalculatorPreferences.java
View File

@ -97,6 +97,12 @@ public final class CalculatorPreferences {
} }
} }
public static class Graph {
public static final Preference<Boolean> showComplexGraph = new BooleanPreference("show_complex_graph", false);
}
static void setDefaultValues(@NotNull SharedPreferences preferences) { static void setDefaultValues(@NotNull SharedPreferences preferences) {
if (!AndroidCalculatorEngine.Preferences.groupingSeparator.isSet(preferences)) { if (!AndroidCalculatorEngine.Preferences.groupingSeparator.isSet(preferences)) {
final Locale locale = Locale.getDefault(); final Locale locale = Locale.getDefault();

4
calculatorpp/src/main/java/org/solovyev/android/calculator/about/CalculatorFragmentType.java
View File

@ -29,10 +29,8 @@ public enum CalculatorFragmentType {
variables(CalculatorVarsFragment.class, R.layout.vars_fragment, R.string.c_vars), variables(CalculatorVarsFragment.class, R.layout.vars_fragment, R.string.c_vars),
functions(CalculatorFunctionsFragment.class, R.layout.math_entities_fragment, R.string.c_functions), functions(CalculatorFunctionsFragment.class, R.layout.math_entities_fragment, R.string.c_functions),
operators(CalculatorOperatorsFragment.class, R.layout.math_entities_fragment, R.string.c_operators), operators(CalculatorOperatorsFragment.class, R.layout.math_entities_fragment, R.string.c_operators),
plotter(CalculatorPlotFragment.class, R.layout.plot_fragment, R.string.c_plot), plotter(CalculatorPlotFragment.class, R.layout.plot_fragment, R.string.c_graph),
about(CalculatorAboutFragment.class, R.layout.about_fragment, R.string.c_about), about(CalculatorAboutFragment.class, R.layout.about_fragment, R.string.c_about),
// todo serso: rename and inflate ad
faq(CalculatorHelpFaqFragment.class, R.layout.help_faq_fragment, R.string.c_faq), faq(CalculatorHelpFaqFragment.class, R.layout.help_faq_fragment, R.string.c_faq),
hints(CalculatorHelpHintsFragment.class, R.layout.help_hints_fragment, R.string.c_hints), hints(CalculatorHelpHintsFragment.class, R.layout.help_hints_fragment, R.string.c_hints),
screens(CalculatorHelpScreensFragment.class, R.layout.help_screens_fragment, R.string.c_screens), screens(CalculatorHelpScreensFragment.class, R.layout.help_screens_fragment, R.string.c_screens),

2
calculatorpp/src/main/java/org/solovyev/android/calculator/model/AndroidCalculatorEngine.java
View File

@ -163,7 +163,7 @@ public class AndroidCalculatorEngine implements CalculatorEngine, SharedPreferen
@Override @Override
public void init() { public void init() {
synchronized (lock) { synchronized (lock) {
calculatorEngine.init(); reset();
} }
} }

42
calculatorpp/src/main/java/org/solovyev/android/calculator/plot/CalculatorPlotFragment.java
View File

@ -6,9 +6,11 @@
package org.solovyev.android.calculator.plot; package org.solovyev.android.calculator.plot;
import android.content.SharedPreferences;
import android.graphics.Color; import android.graphics.Color;
import android.os.Bundle; import android.os.Bundle;
import android.os.Handler; import android.os.Handler;
import android.preference.PreferenceManager;
import android.util.Log; import android.util.Log;
import android.view.LayoutInflater; import android.view.LayoutInflater;
import android.view.View; import android.view.View;
@ -56,7 +58,8 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
private static final int DEFAULT_MAX_NUMBER = 10; private static final int DEFAULT_MAX_NUMBER = 10;
public static final String INPUT = "org.solovyev.android.calculator.CalculatorPlotActivity_input"; public static final String INPUT = "plotter_input";
private static final String PLOT_BOUNDARIES = "plot_boundaries";
public static final long EVAL_DELAY_MILLIS = 200; public static final long EVAL_DELAY_MILLIS = 200;
@ -74,7 +77,7 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
private Constant variable; private Constant variable;
@NotNull @NotNull
private final CalculatorFragmentHelper fragmentHelper = CalculatorApplication.getInstance().createFragmentHelper(R.layout.plot_fragment, R.string.c_plot, false); private final CalculatorFragmentHelper fragmentHelper = CalculatorApplication.getInstance().createFragmentHelper(R.layout.plot_fragment, R.string.c_graph, false);
@NotNull @NotNull
private final Executor plotExecutor = Executors.newSingleThreadExecutor(); private final Executor plotExecutor = Executors.newSingleThreadExecutor();
@ -113,6 +116,8 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
this.bgColor = getResources().getColor(android.R.color.transparent); this.bgColor = getResources().getColor(android.R.color.transparent);
prepareData(); prepareData();
} }
setRetainInstance(true);
} }
private void createInputFromDisplayState(@NotNull CalculatorDisplayViewState displayState) { private void createInputFromDisplayState(@NotNull CalculatorDisplayViewState displayState) {
@ -161,7 +166,25 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
this.fragmentHelper.onViewCreated(this, root); this.fragmentHelper.onViewCreated(this, root);
updateGraphicalView(root);
PlotBoundaries plotBoundaries = null;
/*if ( savedInstanceState != null ) {
final Object object = savedInstanceState.getSerializable(PLOT_BOUNDARIES);
if ( object instanceof PlotBoundaries) {
plotBoundaries = ((PlotBoundaries) object);
}
}*/
updateGraphicalView(root, plotBoundaries);
}
@Override
public void onSaveInstanceState(Bundle out) {
super.onSaveInstanceState(out);
/*if (chart != null) {
out.putSerializable(PLOT_BOUNDARIES, new PlotBoundaries(chart.getRenderer()));
}*/
} }
@Override @Override
@ -172,7 +195,7 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
if ( !inputFromArgs ) { if ( !inputFromArgs ) {
createInputFromDisplayState(CalculatorLocatorImpl.getInstance().getDisplay().getViewState()); createInputFromDisplayState(CalculatorLocatorImpl.getInstance().getDisplay().getViewState());
updateGraphicalView(getView()); updateGraphicalView(getView(), null);
} }
} }
@ -183,11 +206,9 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
super.onPause(); super.onPause();
} }
private void updateGraphicalView(@NotNull View root) { private void updateGraphicalView(@NotNull View root, @Nullable PlotBoundaries plotBoundaries) {
if (input != null) { if (input != null) {
// todo serso setGraphicalView(root, plotBoundaries);
final Object lastNonConfigurationInstance = null;//getLastNonConfigurationInstance();
setGraphicalView(root, lastNonConfigurationInstance instanceof PlotBoundaries ? (PlotBoundaries) lastNonConfigurationInstance : null);
} else { } else {
Toast.makeText(this.getActivity(), "Plot is not possible!", Toast.LENGTH_LONG).show(); Toast.makeText(this.getActivity(), "Plot is not possible!", Toast.LENGTH_LONG).show();
} }
@ -282,6 +303,9 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
} }
private void updateDataSets(@NotNull final XYChart chart, long millisToWait) { private void updateDataSets(@NotNull final XYChart chart, long millisToWait) {
final SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this.getActivity());
final boolean showComplexGraph = CalculatorPreferences.Graph.showComplexGraph.getPreference(preferences);
pendingOperation.setObject(new Runnable() { pendingOperation.setObject(new Runnable() {
@Override @Override
public void run() { public void run() {
@ -405,7 +429,7 @@ public class CalculatorPlotFragment extends SherlockFragment implements Calculat
public void run() { public void run() {
final View view = getView(); final View view = getView();
if (view != null) { if (view != null) {
updateGraphicalView(view); updateGraphicalView(view, null);
} }
} }
}); });

6
calculatorpp/src/main/java/org/solovyev/android/calculator/plot/PlotUtils.java
View File

@ -37,7 +37,7 @@ public final class PlotUtils {
@NotNull Generic expression, @NotNull Generic expression,
@NotNull Constant variable, @NotNull Constant variable,
@NotNull MyXYSeries realSeries, @NotNull MyXYSeries realSeries,
@NotNull MyXYSeries imagSeries, @Nullable MyXYSeries imagSeries,
boolean addExtra, boolean addExtra,
int numberOfSteps) throws ArithmeticException { int numberOfSteps) throws ArithmeticException {
@ -72,7 +72,7 @@ public final class PlotUtils {
prevX = x; prevX = x;
} }
boolean needToCalculateImagY = imagSeries.needToAdd(step, x); boolean needToCalculateImagY = imagSeries != null && imagSeries.needToAdd(step, x);
if (needToCalculateImagY) { if (needToCalculateImagY) {
y = prepareY(c.imaginaryPart()); y = prepareY(c.imaginaryPart());
if (y != null) { if (y != null) {
@ -86,7 +86,7 @@ public final class PlotUtils {
} }
} }
} else { } else {
boolean needToCalculateImagY = imagSeries.needToAdd(step, x); boolean needToCalculateImagY = imagSeries != null && imagSeries.needToAdd(step, x);
if (needToCalculateImagY) { if (needToCalculateImagY) {
final Complex c = calculatorExpression(expression, variable, x); final Complex c = calculatorExpression(expression, variable, x);
Double y = prepareY(c.imaginaryPart()); Double y = prepareY(c.imaginaryPart());