Develop

.github/workflows/main.yml

@@ -0,0 +1,39 @@
+name: "Build and Test"
+
+on:
+  pull_request:
+    branches:
+      - main
+
+  push:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v2
+
+    - name: Set up Java
+      uses: actions/setup-java@v2
+      with:
+        distribution: 'zulu'
+        java-version: '11'
+
+    - name: Set up Flutter
+      run: |
+        git clone https://github.com/flutter/flutter.git -b stable
+        echo "$GITHUB_WORKSPACE/flutter/bin" >> $GITHUB_PATH
+
+    - name: Flutter doctor
+      run: flutter/bin/flutter doctor -v
+
+    - name: Install dependencies
+      run: flutter/bin/flutter pub get
+
+    - name: Run tests
+      run: flutter/bin/flutter test
+

lib/am_data.dart

@@ -1,11 +1,14 @@
+class Sinusoid {
+  double amplitude = 0;
+  double frequency = 0;
+  double phase = 0;
+  Sinusoid(this.amplitude, this.frequency, this.phase);
+}
+
 class AmData {
-  double vM = 5;
-  double vC = 5;
-  double fM = 100;
-  double fC = 4000;
-  double thetaM = 0;
-  double thetaC = 0;
+  Sinusoid modulator = Sinusoid(5, 100, 0);
   bool showModulator = true;
+  Sinusoid carrier = Sinusoid(5, 4000, 0);
   bool showCarrier = true;
   bool showAm = true;
 }

lib/main.dart

@@ -1,4 +1,4 @@
-import 'package:amgraph/am_widget.dart';
+import 'package:amgraph/widgets/am_widget.dart';
 import 'package:flutter/material.dart';
 
 void main() {

lib/utils/range_text_input_formatter.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/services.dart';
+
+class RangeTextInputFormatter extends TextInputFormatter {
+  final double min;
+  final double max;
+
+  RangeTextInputFormatter({required this.min, required this.max});
+
+  @override
+  TextEditingValue formatEditUpdate(
+    TextEditingValue oldValue,
+    TextEditingValue newValue,
+  ) {
+    if (newValue.text.isEmpty) {
+      return oldValue;
+    }
+
+    try {
+      final double value = double.parse(newValue.text);
+      if (value < min || value > max) {
+        return oldValue;
+      }
+    } catch (e) {
+      return oldValue;
+    }
+
+    return newValue;
+  }
+}