Загрузил(а) файлы в 'flutter/lib'
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2422274ea3
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@ -8,71 +8,85 @@ class CurvePainter extends CustomPainter {
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Key? key,
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required this.graphData,
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required this.bfsPath,
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required this.dfsStart,
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required this.start,
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required this.end,
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required this.dfsAccessTable,
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});
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List<int>? bfsPath;
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List<bool>? dfsAccessTable;
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int? dfsStart;
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int? start;
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int? end;
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Graphs graphData;
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final double dotRad = 6;
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final double lineWidth = 2;
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final Color lineColor = Colors.black;
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final double aboveHeight = 5;
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double circleRad = 100;
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final TextStyle textStyle = TextStyle(
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color: Colors.green.shade900,
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final double _dotRad = 6;
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final double _lineWidth = 1.5;
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final Color _lineColor = Colors.black;
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final double _aboveHeight = 5;
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double _circleRad = 100;
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final TextStyle _textStyle = TextStyle(
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color: Colors.red.shade900,
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decorationColor: Colors.green.shade900,
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decorationThickness: 10,
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decorationStyle: TextDecorationStyle.dashed,
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fontSize: 20,
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);
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void drawLine(Canvas canvas, Offset p1, Offset p2) {
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Map<int, Offset> _off = <int, Offset>{};
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void _drawLine(Canvas canvas, Offset p1, Offset p2) {
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Paint p = Paint();
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p.color = lineColor;
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p.strokeWidth = lineWidth;
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p.color = _lineColor;
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p.strokeWidth = _lineWidth;
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canvas.drawLine(p1, p2, p);
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}
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void drawDot(Canvas canvas, Offset p1) {
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void _drawDot(Canvas canvas, Offset p1, [double plusRad = 0, Color? col]) {
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col ??= Colors.yellow.shade900;
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var p = Paint();
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p.color = Colors.yellow.shade900;
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p.strokeWidth = lineWidth + 2;
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canvas.drawCircle(p1, dotRad, p);
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p.color = col;
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p.strokeWidth = _lineWidth + 2;
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canvas.drawCircle(p1, _dotRad + plusRad, p);
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}
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void drawSelfConnect(Canvas canvas, Offset p1) {
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void _drawSelfConnect(Canvas canvas, Offset p1) {
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var p = Paint();
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p.color = lineColor;
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p.strokeWidth = lineWidth;
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p.color = _lineColor;
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p.strokeWidth = _lineWidth;
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p.style = PaintingStyle.stroke;
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canvas.drawCircle(Offset(p1.dx + dotRad + 20, p1.dy), dotRad + 20, p);
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canvas.drawCircle(Offset(p1.dx + _dotRad + 20, p1.dy), _dotRad + 20, p);
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}
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TextSpan _getTextSpan(String s) => TextSpan(text: s, style: textStyle);
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TextSpan _getTextSpan(String s) => TextSpan(text: s, style: _textStyle);
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TextPainter _getTextPainter(String s) => TextPainter(
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text: _getTextSpan(s),
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textDirection: TextDirection.ltr,
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textAlign: TextAlign.center);
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void drawDotNames(Canvas canvas, Offset place, String s) {
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void _drawDotNames(Canvas canvas, Offset place, String s) {
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var textPainter = _getTextPainter(s);
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textPainter.layout();
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textPainter.paint(
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canvas,
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Offset((place.dx - textPainter.width),
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(place.dy - textPainter.height) - aboveHeight));
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(place.dy - textPainter.height) - _aboveHeight));
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}
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void drawAboveText(Canvas canvas, Offset size, String s) {
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var textPainter = _getTextPainter(s);
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void _drawDotNum(Canvas canvas, Offset size, String s) {
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var textPainter = TextPainter(
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text: TextSpan(
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text: s,
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style: const TextStyle(
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color: Colors.black,
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fontSize: 17,
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)),
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textDirection: TextDirection.ltr,
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textAlign: TextAlign.center);
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textPainter.layout();
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textPainter.paint(
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canvas,
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Offset((size.dx - textPainter.width),
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(size.dy - textPainter.height) - aboveHeight));
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Offset((size.dx - textPainter.width) + 25,
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(size.dy - textPainter.height) + _aboveHeight + 30));
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}
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int getHighInputConnections() {
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int _getHighInputConnections() {
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if (graphData.getDots().length != 1 && graphData.getDots().length <= 3) {
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return -1;
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}
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@ -83,17 +97,18 @@ class CurvePainter extends CustomPainter {
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return higest;
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}
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Map<int, Offset> getDotPos(int dotsAm, Size size, [int? exclude]) {
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Map<int, Offset> _getDotPos(int dotsAm, Size size) {
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Map<int, Offset> off = <int, Offset>{};
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var width = size.width / 2;
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var height = size.height / 2;
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int add = 0;
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int h = getHighInputConnections();
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int h = _getHighInputConnections();
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for (int i = 0; i < dotsAm; i++) {
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if ((i + 1) != h) {
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double x = cos(2 * pi * (i - add) / (dotsAm - add)) * circleRad + width;
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double x =
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cos(2 * pi * (i - add) / (dotsAm - add)) * _circleRad + width;
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double y =
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sin(2 * pi * (i - add) / (dotsAm - add)) * circleRad + height;
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sin(2 * pi * (i - add) / (dotsAm - add)) * _circleRad + height;
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off[i + 1] = Offset(x, y);
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} else if ((i + 1) == h) {
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@ -110,7 +125,7 @@ class CurvePainter extends CustomPainter {
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return off;
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}
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void drawHArrow(Canvas canvas, Size size, Offset from, Offset to,
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void _drawHArrow(Canvas canvas, Size size, Offset from, Offset to,
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[bool doubleSided = false]) {
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Path path;
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@ -120,7 +135,7 @@ class CurvePainter extends CustomPainter {
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..style = PaintingStyle.stroke
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..strokeCap = StrokeCap.round
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..strokeJoin = StrokeJoin.round
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..strokeWidth = lineWidth;
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..strokeWidth = _lineWidth;
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var length = sqrt((to.dx - from.dx) * (to.dx - from.dx) +
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(to.dy - from.dy) * (to.dy - from.dy));
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@ -131,8 +146,8 @@ class CurvePainter extends CustomPainter {
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path.relativeCubicTo(
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0,
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0,
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-(from.dx + to.dx) / (length * 2) - 40,
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-(from.dy + to.dy) / (length * 2) - 40,
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-(from.dx + to.dx + length) / (length) - 40,
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-(from.dy + to.dy + length) / (length) - 40,
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to.dx - from.dx,
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to.dy - from.dy);
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path =
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@ -140,7 +155,7 @@ class CurvePainter extends CustomPainter {
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canvas.drawPath(path, paint);
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}
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void drawHighArrow(Canvas canvas, Size size, Offset from, Offset to,
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void _drawHighArrow(Canvas canvas, Size size, Offset from, Offset to,
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[bool doubleSided = false]) {
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Path path;
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@ -150,7 +165,7 @@ class CurvePainter extends CustomPainter {
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..style = PaintingStyle.stroke
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..strokeCap = StrokeCap.round
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..strokeJoin = StrokeJoin.round
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..strokeWidth = lineWidth;
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..strokeWidth = _lineWidth;
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var length = sqrt((to.dx - from.dx) * (to.dx - from.dx) +
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(to.dy - from.dy) * (to.dy - from.dy));
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@ -161,7 +176,7 @@ class CurvePainter extends CustomPainter {
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path.relativeCubicTo(
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0,
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0,
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(from.dx + to.dx) / (length * 3) + 40,
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(from.dx + to.dx) / (length * 2) + 40,
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(from.dy + to.dy) / (length * 2) + 40,
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to.dx - from.dx,
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to.dy - from.dy);
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@ -173,29 +188,29 @@ class CurvePainter extends CustomPainter {
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canvas.drawPath(path, paint);
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}
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void drawConnections(
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void _drawConnections(
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Canvas canvas, Size size, List<Dot> dots, Map<int, Offset> off) {
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for (var i in dots) {
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var list = i.getL();
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var beg = off[i.num];
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for (var d in list.keys) {
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if (d == i.num) {
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drawSelfConnect(canvas, off[d]!);
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_drawSelfConnect(canvas, off[d]!);
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} else {
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if (graphData.getDoubleSidedBool()) {
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if (d > i.num) {
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drawHArrow(canvas, size, beg!, off[d]!, false);
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_drawHArrow(canvas, size, beg!, off[d]!, false);
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if (graphData.getUseLengthBool()) {
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drawDotNames(
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_drawDotNames(
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canvas,
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Offset((off[d]!.dx + beg.dx) / 2 - 18,
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(off[d]!.dy + beg.dy) / 2 - 18),
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i.getL()[d].toString());
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}
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} else {
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drawHighArrow(canvas, size, beg!, off[d]!, false);
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_drawHighArrow(canvas, size, beg!, off[d]!, false);
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if (graphData.getUseLengthBool()) {
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drawDotNames(
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_drawDotNames(
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canvas,
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Offset((off[d]!.dx + beg.dx) / 2 + 30,
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(off[d]!.dy + beg.dy) / 2 + 30),
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@ -203,9 +218,9 @@ class CurvePainter extends CustomPainter {
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}
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}
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} else {
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drawLine(canvas, beg!, off[d]!);
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_drawLine(canvas, beg!, off[d]!);
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if (graphData.getUseLengthBool()) {
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drawDotNames(
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_drawDotNames(
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canvas,
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Offset((off[d]!.dx + beg.dx) / 2, (off[d]!.dy + beg.dy) / 2),
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i.getL()[d].toString());
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@ -216,52 +231,71 @@ class CurvePainter extends CustomPainter {
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}
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}
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void _drawBFS(Canvas canvas) {
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if (bfsPath != null) {
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for (int i = 0; i < bfsPath!.length; i++) {
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_drawDot(canvas, _off[bfsPath![i]]!, 8, Colors.yellow);
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}
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_drawDot(canvas, _off[start]!, 9, Colors.green);
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_drawDot(canvas, _off[end]!, 7, Colors.red.shade200);
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for (int i = 0; i < bfsPath!.length; i++) {
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_drawDotNum(canvas, _off[bfsPath![i]]!, "bfs: №${i + 1}");
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}
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}
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}
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void _drawDFS(Canvas canvas) {
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if (dfsAccessTable != null) {
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for (int i = 0; i < dfsAccessTable!.length; i++) {
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if (dfsAccessTable![i]) {
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_drawDot(canvas, _off[i + 1]!, 8, Colors.green.shade500);
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_drawDotNum(canvas, _off[i + 1]!, "dfs: visible");
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} else {
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_drawDot(canvas, _off[i + 1]!, 7, Colors.red.shade500);
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_drawDotNum(canvas, _off[i + 1]!, "dfs: not visible");
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}
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}
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_drawDot(canvas, _off[start]!, 9, Colors.green.shade900);
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}
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}
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@override
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void paint(Canvas canvas, Size size) {
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if (size.width > size.height) {
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circleRad = size.height / 3;
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_circleRad = size.height / 3;
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} else {
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circleRad = size.width / 3;
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_circleRad = size.width / 3;
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}
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//var paint = Paint();
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//drawLine(canvas, Offset(0, size.height / 2),
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//Offset(size.width, size.height / 2));
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//gr = getGraph();
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//int higest = getHighConnections();
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//if (higest > -1) {
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var off = getDotPos(graphData.getDotAmount(), size); //, higest);
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//off[higest] = Offset(size.width / 2, size.height / 2);
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for (int i in off.keys) {
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drawDot(canvas, off[i]!);
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drawDotNames(
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canvas, off[i]!, "${graphData.getDots()[i - 1].getName()}:[$i]");
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_off = _getDotPos(graphData.getDotAmount(), size); //, higest);
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for (int i in _off.keys) {
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_drawDot(canvas, _off[i]!);
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//drawDotNames(canvas, off[i]!, "${graphData.getDots()[i - 1].getName()}:[$i]");
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}
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//var g = gr.getNoRepeatDots();
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//print(g);
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var g = graphData.getDots();
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drawConnections(canvas, size, g, off);
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_drawBFS(canvas);
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_drawDFS(canvas);
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_drawConnections(canvas, size, g, _off);
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//pringArr(canvas, size);
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//drawArrow(canvas, Offset(size.width / 2, size.height / 2),
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// Offset(size.width / 2 + 50, size.height / 2 + 200));
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//}
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for (int i in _off.keys) {
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//drawDot(canvas, off[i]!);
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_drawDotNames(
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canvas, _off[i]!, "${graphData.getDots()[i - 1].getName()}:[$i]");
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}
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}
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@override
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bool shouldRepaint(CustomPainter oldDelegate) {
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return true;
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}
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/*void _drawTextAt(String txt, Offset position, Canvas canvas) {
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final textPainter = getTextPainter(txt);
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textPainter.layout(minWidth: 0, maxWidth: 0);
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Offset drawPosition =
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Offset(position.dx, position.dy - (textPainter.height / 2));
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textPainter.paint(canvas, drawPosition);
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}*/
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}
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void pringArr(Canvas canvas, Size size) {
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/*void _pringArr(Canvas canvas, Size size) {
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TextSpan textSpan;
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TextPainter textPainter;
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Path path;
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@ -292,108 +326,4 @@ void pringArr(Canvas canvas, Size size) {
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);
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textPainter.layout(minWidth: size.width);
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textPainter.paint(canvas, Offset(0, size.height * 0.06));
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/*
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/// Draw a double sided arrow.
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path = Path();
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path.moveTo(size.width * 0.25, size.height * 0.2);
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path.relativeCubicTo(0, 0, size.width * 0.25, 50, size.width * 0.5, 0);
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path = ArrowPath.make(path: path, isDoubleSided: true);
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canvas.drawPath(path, paint..color = Colors.cyan);
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textSpan = const TextSpan(
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text: 'Double sided arrow',
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style: TextStyle(color: Colors.cyan),
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);
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textPainter = TextPainter(
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text: textSpan,
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textAlign: TextAlign.center,
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textDirection: TextDirection.ltr,
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);
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textPainter.layout(minWidth: size.width);
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textPainter.paint(canvas, Offset(0, size.height * 0.16));
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/// Use complex path.
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path = Path();
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path.moveTo(size.width * 0.25, size.height * 0.3);
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path.relativeCubicTo(0, 0, size.width * 0.25, 0, size.width * 0.5, 50);
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path.relativeCubicTo(0, 0, -size.width * 0.25, 50, -size.width * 0.5, 50);
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//path.relativeCubicTo(0, 0, size.width * 0.125, 10, size.width * 0.25, -10);
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path = ArrowPath.make(path: path, isDoubleSided: true);
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canvas.drawPath(path, paint..color = Colors.blue);
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textSpan = const TextSpan(
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text: 'Complex path',
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style: TextStyle(color: Colors.blue),
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);
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textPainter = TextPainter(
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text: textSpan,
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textAlign: TextAlign.center,
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textDirection: TextDirection.ltr,
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);
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textPainter.layout(minWidth: size.width);
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textPainter.paint(canvas, Offset(0, size.height * 0.28));
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/// Draw several arrows on the same path.
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path = Path();
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path.moveTo(size.width * 0.25, size.height * 0.53);
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path.relativeCubicTo(0, 0, size.width * 0.25, 50, size.width * 0.5, 50);
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path = ArrowPath.make(path: path);
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path.relativeCubicTo(0, 0, -size.width * 0.25, 0, -size.width * 0.5, 50);
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path = ArrowPath.make(path: path);
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Path subPath = Path();
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subPath.moveTo(size.width * 0.375, size.height * 0.53 + 100);
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subPath.relativeCubicTo(0, 0, size.width * 0.125, 10, size.width * 0.25, -10);
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subPath = ArrowPath.make(path: subPath, isDoubleSided: true);
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path.addPath(subPath, Offset.zero);
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canvas.drawPath(path, paint..color = Colors.cyan);
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textSpan = const TextSpan(
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text: 'Several arrows on the same path',
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style: TextStyle(color: Colors.cyan),
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);
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textPainter = TextPainter(
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text: textSpan,
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textAlign: TextAlign.center,
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textDirection: TextDirection.ltr,
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);
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textPainter.layout(minWidth: size.width);
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textPainter.paint(canvas, Offset(0, size.height * 0.49));
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/// Adjusted
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path = Path();
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path.moveTo(size.width * 0.1, size.height * 0.8);
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path.relativeCubicTo(0, 0, size.width * 0.3, 50, size.width * 0.25, 75);
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path = ArrowPath.make(path: path, isAdjusted: true);
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canvas.drawPath(path, paint..color = Colors.blue);
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textSpan = const TextSpan(
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text: 'Adjusted',
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style: TextStyle(color: Colors.blue),
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);
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textPainter = TextPainter(
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text: textSpan,
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textAlign: TextAlign.left,
|
||||
textDirection: TextDirection.ltr,
|
||||
);
|
||||
textPainter.layout();
|
||||
textPainter.paint(canvas, Offset(size.width * 0.2, size.height * 0.77));
|
||||
|
||||
/// Non adjusted.
|
||||
path = Path();
|
||||
path.moveTo(size.width * 0.6, size.height * 0.8);
|
||||
path.relativeCubicTo(0, 0, size.width * 0.3, 50, size.width * 0.25, 75);
|
||||
path = ArrowPath.make(path: path, isAdjusted: false);
|
||||
canvas.drawPath(path, paint..color = Colors.blue);
|
||||
|
||||
textSpan = const TextSpan(
|
||||
text: 'Non adjusted',
|
||||
style: TextStyle(color: Colors.blue),
|
||||
);
|
||||
textPainter = TextPainter(
|
||||
text: textSpan,
|
||||
textAlign: TextAlign.left,
|
||||
textDirection: TextDirection.ltr,
|
||||
);
|
||||
textPainter.layout();
|
||||
textPainter.paint(canvas, Offset(size.width * 0.65, size.height * 0.77));*/
|
||||
}
|
||||
}*/
|
||||
|
|
|
|||
|
|
@ -0,0 +1,507 @@
|
|||
import 'package:graphs/src/graph.dart';
|
||||
import 'package:graphs/curve_painter.dart';
|
||||
|
||||
import 'package:file_picker/file_picker.dart';
|
||||
import 'package:flutter/material.dart';
|
||||
|
||||
Graphs getGraph() {
|
||||
List<Dot> d = <Dot>[];
|
||||
d.add(Dot.fromTwoLists("1", [2, 3], [5, 1]));
|
||||
d.add(Dot.fromTwoLists("2", [1, 3], [1, 1]));
|
||||
d.add(Dot.fromTwoLists("3", [1, 2], [1, 2]));
|
||||
//d.add(Dot.fromTwoLists("Name1", [], []));
|
||||
//d.add(Dot.fromTwoLists("Name2", [], []));
|
||||
return Graphs.fromList("Имя", d, true, true);
|
||||
}
|
||||
|
||||
class DrawingPage extends StatefulWidget {
|
||||
const DrawingPage({Key? key}) : super(key: key);
|
||||
|
||||
@override
|
||||
State<StatefulWidget> createState() => _DrawingPageState();
|
||||
}
|
||||
|
||||
class _DrawingPageState extends State<DrawingPage> {
|
||||
double screenSize = 0;
|
||||
Graphs graphData = getGraph();
|
||||
List<int>? bfsPath;
|
||||
List<bool>? dfsAccessTable;
|
||||
int? startDot;
|
||||
int? endDot;
|
||||
String? dropdownValue1;
|
||||
String? dropdownValue2;
|
||||
|
||||
final _textNameController = TextEditingController();
|
||||
final _textNumbController = TextEditingController();
|
||||
final _textDestController = TextEditingController();
|
||||
final _textLnthController = TextEditingController();
|
||||
final _textGrNmController = TextEditingController();
|
||||
|
||||
void clearInputData() {
|
||||
setState(() {
|
||||
_textDestController.clear();
|
||||
_textNumbController.clear();
|
||||
_textLnthController.clear();
|
||||
_textNameController.clear();
|
||||
dropdownValue1 = null;
|
||||
dropdownValue2 = null;
|
||||
/*startDot = null;
|
||||
bfsPath = null;
|
||||
dfsAccessTable = null;
|
||||
endDot = null;*/
|
||||
});
|
||||
}
|
||||
|
||||
@override
|
||||
Widget build(BuildContext context) {
|
||||
screenSize = MediaQuery.of(context).size.width;
|
||||
_textGrNmController.text = graphData.getName();
|
||||
return MaterialApp(
|
||||
home: Scaffold(
|
||||
appBar: AppBar(
|
||||
title: const Align(
|
||||
alignment: Alignment.topLeft,
|
||||
child: Text("Graph name:\n",
|
||||
style: TextStyle(
|
||||
fontSize: 18,
|
||||
color: Colors.white,
|
||||
))),
|
||||
toolbarHeight: 110,
|
||||
flexibleSpace: Container(
|
||||
color: Colors.green.shade900,
|
||||
child: Column(children: <Widget>[
|
||||
const SizedBox(height: 5),
|
||||
Row(children: [
|
||||
addSpaceW(screenSize / 8 + 19),
|
||||
createButton("\nAdd dot\n", addDotPushed),
|
||||
createInputBox("Dot name", screenSize / 4 - 25, Icons.label,
|
||||
_textNameController),
|
||||
addSpaceW(8),
|
||||
createButton("\nAdd path\n", addPathPushed),
|
||||
createInputBox("Input length", screenSize / 4 - 25,
|
||||
Icons.arrow_right_alt_outlined, _textLnthController),
|
||||
]),
|
||||
addSpaceH(3),
|
||||
Row(children: [
|
||||
addSpaceW(6),
|
||||
createInputBox(
|
||||
"Name", screenSize / 8 - 25, null, _textGrNmController),
|
||||
//addSpaceW(screenSize / 8 - 4),
|
||||
createButton("\nDel dot \n", delDotPushed),
|
||||
//createInputBox("Dot number", screenSize / 4 - 25, Icons.fiber_manual_record, _textNumbController),
|
||||
addSpaceW(54),
|
||||
dropList1(screenSize / 4 - 80),
|
||||
addSpaceW(54),
|
||||
createButton("\nDel path\n", delPathPushed),
|
||||
addSpaceW(54),
|
||||
dropList2(screenSize / 4 - 80),
|
||||
//createInputBox("Destination number", screenSize / 4 - 25, Icons.fiber_manual_record, _textDestController),
|
||||
]),
|
||||
]),
|
||||
),
|
||||
actions: [
|
||||
IconButton(
|
||||
onPressed: () => graphData.flushData(),
|
||||
icon: const Icon(Icons.delete_sweep),
|
||||
iconSize: 60,
|
||||
),
|
||||
]),
|
||||
body: CustomPaint(
|
||||
painter: CurvePainter(
|
||||
graphData: graphData,
|
||||
bfsPath: bfsPath,
|
||||
dfsAccessTable: dfsAccessTable,
|
||||
start: startDot,
|
||||
end: endDot),
|
||||
child: Align(
|
||||
alignment: Alignment.topRight,
|
||||
child: ButtonBar(
|
||||
mainAxisSize: MainAxisSize.min,
|
||||
children: <Widget>[
|
||||
createButton("Bfs", bfsPushed),
|
||||
createButton("Dfs", dfsPushed),
|
||||
createButton("Clear dfs or bfs", () {
|
||||
setState(() {
|
||||
bfsPath = null;
|
||||
dfsAccessTable = null;
|
||||
startDot = null;
|
||||
endDot = null;
|
||||
});
|
||||
}),
|
||||
createButton(graphData.getUseLengthStr(), changeLength),
|
||||
createButton(graphData.getDoubleSidedStr(), changeOriented),
|
||||
/*Text(_textGrNmController.text,
|
||||
style:
|
||||
TextStyle(fontSize: 15, color: Colors.blueGrey.shade900)),*/
|
||||
createButton("Save to file", fileSaver),
|
||||
createButton("Load from file", fileOpener),
|
||||
createButton("Help", () {
|
||||
String out =
|
||||
" В поле \"Graph name\" можно сменить имя графу.\n";
|
||||
out +=
|
||||
" Для добавления точки необходимо ввести имя в \"Dot name\" и нажать на \"Add dot\".\n";
|
||||
out +=
|
||||
" Для удаления точки необходимо ввести номер в \"Dot number\" и нажать на \"Del dot\".\n";
|
||||
out +=
|
||||
" Для добавления пути необходимо ввести: номер выходной вершины в \"Dot number\", номер входной вершины в \"Destination number\" ";
|
||||
out +=
|
||||
"и, если граф взвешенный, то ввести длину пути в \"Input length\". Затем нажать \"Add path\".\n";
|
||||
out +=
|
||||
" Для удаления пути необходимо ввести номер выходной вершины в \"Dot number\" и номер входной вершины в \"Destination number\". Затем нажать \"Del path\".\n\n";
|
||||
out +=
|
||||
" Кнопки \"Bfs\" и \"Dfs\" нумеруют точки в зависимости от послежовательности, в которой они будут пройдены.\n";
|
||||
out +=
|
||||
" Кнопки \"Взвешенный\" и \"Ориентированный\" позволяют сменить эти значения перед построением графа (т.е. для их работы граф должен быть пустым).\n";
|
||||
out +=
|
||||
" Кнопки \"Save to file\" и \"Load from file\" позволяют вывести информацию в файл и загрузить информацию из файла соответственно.\n";
|
||||
out +=
|
||||
" Кнопка \"Help\" описывает работу с интерфейсом программы.";
|
||||
showPopUp("Help:", out);
|
||||
})
|
||||
],
|
||||
),
|
||||
),
|
||||
),
|
||||
));
|
||||
}
|
||||
|
||||
// ignore: avoid_types_as_parameter_names, non_constant_identifier_names, use_function_type_syntax_for_parameters
|
||||
ElevatedButton createButton(String txt, void onPressing()) {
|
||||
return ElevatedButton(
|
||||
onPressed: onPressing,
|
||||
style: ButtonStyle(
|
||||
backgroundColor: MaterialStateProperty.resolveWith<Color>(
|
||||
(states) => Colors.green.shade700)),
|
||||
child: Text(txt,
|
||||
style: const TextStyle(
|
||||
fontSize: 15,
|
||||
color: Colors.white70,
|
||||
height: 1,
|
||||
)),
|
||||
);
|
||||
}
|
||||
|
||||
Container createInputBox(String text, double wid, IconData? icon,
|
||||
TextEditingController? controller) {
|
||||
if (icon == null) {
|
||||
return Container(
|
||||
width: wid,
|
||||
height: 40,
|
||||
margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 5),
|
||||
child: TextField(
|
||||
controller: controller,
|
||||
textAlign: TextAlign.center,
|
||||
onChanged: (name) => graphData.setName(name),
|
||||
decoration: InputDecoration(
|
||||
contentPadding:
|
||||
const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
|
||||
filled: true,
|
||||
fillColor: Colors.white,
|
||||
//prefixIcon: Icon(icon, color: Colors.black),
|
||||
border: const OutlineInputBorder(
|
||||
borderRadius: BorderRadius.all(Radius.circular(40))),
|
||||
hintStyle: const TextStyle(color: Colors.black38),
|
||||
hintText: text),
|
||||
));
|
||||
}
|
||||
return Container(
|
||||
width: wid,
|
||||
height: 40,
|
||||
margin: const EdgeInsets.symmetric(horizontal: 20, vertical: 5),
|
||||
child: TextField(
|
||||
controller: controller,
|
||||
textAlign: TextAlign.center,
|
||||
decoration: InputDecoration(
|
||||
contentPadding:
|
||||
const EdgeInsets.symmetric(vertical: 10, horizontal: 10),
|
||||
filled: true,
|
||||
fillColor: Colors.white,
|
||||
prefixIcon: Icon(icon, color: Colors.black),
|
||||
border: const OutlineInputBorder(
|
||||
borderRadius: BorderRadius.all(Radius.circular(40))),
|
||||
hintStyle: const TextStyle(color: Colors.black38),
|
||||
hintText: text),
|
||||
));
|
||||
}
|
||||
|
||||
SizedBox addSpaceH(double h) {
|
||||
return SizedBox(height: h);
|
||||
}
|
||||
|
||||
SizedBox addSpaceW(double w) {
|
||||
return SizedBox(width: w);
|
||||
}
|
||||
|
||||
void showPopUp(String alertTitle, String err) => showDialog<String>(
|
||||
context: context,
|
||||
builder: (BuildContext context) => AlertDialog(
|
||||
title: Text(alertTitle),
|
||||
content: Text(err),
|
||||
actions: <Widget>[
|
||||
TextButton(
|
||||
onPressed: () => Navigator.pop(context, 'OK'),
|
||||
child: const Text('OK'),
|
||||
),
|
||||
],
|
||||
),
|
||||
);
|
||||
|
||||
//*********ButtonsFunctions*********
|
||||
void addDotPushed() {
|
||||
//showPopUp("Test", "Test message");
|
||||
//var inp = int.tryParse(_textNameController.text);
|
||||
setState(() {
|
||||
if (_textNameController.text == "") {
|
||||
showPopUp("Error", "No name in \"Dot name\" box");
|
||||
} else {
|
||||
String? res = graphData.addIsolated(_textNameController.text);
|
||||
if (res != null) {
|
||||
showPopUp("Error", res);
|
||||
}
|
||||
}
|
||||
clearInputData();
|
||||
});
|
||||
}
|
||||
|
||||
void addPathPushed() {
|
||||
setState(() {
|
||||
if (dropdownValue1 == null) {
|
||||
showPopUp("Error", "Select output dot");
|
||||
} else if (dropdownValue2 == null) {
|
||||
showPopUp("Error", "select input dot");
|
||||
} else if (_textLnthController.text == "" &&
|
||||
graphData.getUseLengthBool()) {
|
||||
showPopUp("Error", "No length in \"Input length\" box");
|
||||
} else {
|
||||
int? from = int.parse(dropdownValue1!);
|
||||
int? to = int.parse(dropdownValue2!);
|
||||
int? len = int.tryParse(_textLnthController.text);
|
||||
if (len == null && graphData.getUseLengthBool()) {
|
||||
showPopUp("Error",
|
||||
"Can't parse input.\nInts only allowed in \"Dot number\", \"Destination number\" and \"Input length\"");
|
||||
} else {
|
||||
len ??= 0;
|
||||
String? res = graphData.addPath(from, to, len);
|
||||
if (res != null) {
|
||||
showPopUp("Error", res);
|
||||
}
|
||||
}
|
||||
}
|
||||
clearInputData();
|
||||
});
|
||||
}
|
||||
|
||||
void changeOriented() {
|
||||
setState(() {
|
||||
String? res = graphData.flipUseOrientation();
|
||||
if (res != null) showPopUp("Error", res);
|
||||
});
|
||||
}
|
||||
|
||||
void changeLength() {
|
||||
setState(() {
|
||||
String? res = graphData.flipUseLength();
|
||||
if (res != null) showPopUp("Error", res);
|
||||
});
|
||||
}
|
||||
|
||||
void delPathPushed() {
|
||||
setState(() {
|
||||
if (_textNumbController.text == "") {
|
||||
showPopUp("Error", "No number in \"Dot number\" box");
|
||||
} else if (_textDestController.text == "") {
|
||||
showPopUp("Error", "No name in \"Dot name\" box");
|
||||
} else {
|
||||
int? from = int.tryParse(_textNumbController.text);
|
||||
int? to = int.tryParse(_textDestController.text);
|
||||
if (from == null || to == null) {
|
||||
showPopUp("Error",
|
||||
"Can't parse input.\nInts only allowed in \"Dot number\" and \"Destination number\"");
|
||||
} else {
|
||||
String? res = graphData.delPath(from, to);
|
||||
if (res != null) {
|
||||
showPopUp("Error", res);
|
||||
}
|
||||
}
|
||||
}
|
||||
clearInputData();
|
||||
});
|
||||
}
|
||||
|
||||
void delDotPushed() {
|
||||
setState(() {
|
||||
/*if (_textNumbController.text == "") {
|
||||
showPopUp("Error", "No number in \"Dot number\" box");
|
||||
} else {
|
||||
int? dot = int.tryParse(_textNumbController.text);
|
||||
if (dot == null) {
|
||||
showPopUp("Error", "Can't parse input.\nInts only allowed");
|
||||
} else {
|
||||
String? res = graphData.delDot(dot);
|
||||
if (res != null) {
|
||||
showPopUp("Error", res);
|
||||
}
|
||||
}
|
||||
}*/
|
||||
if (dropdownValue1 != null) {
|
||||
graphData.delDot(int.parse(dropdownValue1!));
|
||||
} else {
|
||||
showPopUp("Error", "Nothing in input");
|
||||
}
|
||||
clearInputData();
|
||||
});
|
||||
}
|
||||
|
||||
void fileOpener() async {
|
||||
FilePickerResult? result =
|
||||
await FilePicker.platform.pickFiles(allowedExtensions: ["txt"]);
|
||||
setState(() {
|
||||
if (result != null) {
|
||||
if (!result.files.single.path!.endsWith(".txt")) {
|
||||
showPopUp("Error", "Can open only \".txt\" files");
|
||||
} else {
|
||||
//print(result.files.single.path!);
|
||||
String? res =
|
||||
graphData.replaceDataFromFile(result.files.single.path!);
|
||||
if (res != null) showPopUp("Error", res);
|
||||
}
|
||||
} else {
|
||||
showPopUp("Error", "No file selected");
|
||||
// User canceled the picker
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
void fileSaver() async {
|
||||
String? outputFile = await FilePicker.platform.saveFile(
|
||||
dialogTitle: 'Please select an output file:',
|
||||
fileName: 'output-file.txt',
|
||||
allowedExtensions: ["txt"]);
|
||||
if (outputFile == null) {
|
||||
showPopUp("Error", "Save cancelled");
|
||||
// User canceled the picker
|
||||
} else {
|
||||
if (!outputFile.endsWith(".txt")) {
|
||||
outputFile += ".txt";
|
||||
}
|
||||
graphData.printToFile(outputFile);
|
||||
}
|
||||
}
|
||||
|
||||
void bfsPushed() {
|
||||
setState(() {
|
||||
bfsPath = null;
|
||||
dfsAccessTable = null;
|
||||
startDot = null;
|
||||
endDot = null;
|
||||
if (dropdownValue1 == null) {
|
||||
showPopUp("Error", "No number in \"Dot number\" box");
|
||||
} else if (dropdownValue2 == null) {
|
||||
showPopUp("Error", "No number in \"Destination number\" box");
|
||||
} else {
|
||||
startDot = int.parse(dropdownValue1!);
|
||||
endDot = int.parse(dropdownValue2!);
|
||||
|
||||
bfsPath = graphData.bfsPath(startDot!, endDot!);
|
||||
if (bfsPath == null) {
|
||||
showPopUp("Info", "There is no path");
|
||||
}
|
||||
print(bfsPath);
|
||||
}
|
||||
});
|
||||
clearInputData();
|
||||
}
|
||||
|
||||
void dfsPushed() {
|
||||
setState(() {
|
||||
bfsPath = null;
|
||||
dfsAccessTable = null;
|
||||
startDot = null;
|
||||
endDot = null;
|
||||
if (dropdownValue1 == null) {
|
||||
showPopUp("Error", "No number in \"Dot number\" box");
|
||||
} else {
|
||||
startDot = int.parse(dropdownValue1!);
|
||||
dfsAccessTable = graphData.dfsIterative(startDot!);
|
||||
if (dfsAccessTable == null) {
|
||||
showPopUp("Err", "report this error.");
|
||||
}
|
||||
print(dfsAccessTable);
|
||||
}
|
||||
clearInputData();
|
||||
});
|
||||
}
|
||||
//*********ButtonsFunctions*********
|
||||
|
||||
SizedBox dropList1(double width) {
|
||||
var button = DropdownButton(
|
||||
hint: const Text(
|
||||
'Select Dot',
|
||||
style: TextStyle(color: Colors.white, fontSize: 13),
|
||||
), // Not necessary for Option 1
|
||||
alignment: AlignmentDirectional.centerEnd,
|
||||
value: dropdownValue1,
|
||||
|
||||
isDense: true,
|
||||
borderRadius: const BorderRadius.all(Radius.circular(20)),
|
||||
dropdownColor: Colors.green.shade800,
|
||||
style: const TextStyle(
|
||||
//background: Paint()..color = Colors.white,
|
||||
color: Colors.white,
|
||||
fontSize: 18,
|
||||
),
|
||||
onChanged: (String? newValue) {
|
||||
setState(() {
|
||||
dropdownValue1 = newValue;
|
||||
});
|
||||
},
|
||||
items: graphData.getDots().map((location) {
|
||||
return DropdownMenuItem(
|
||||
child: Text(location.getName()),
|
||||
value: location.num.toString(),
|
||||
);
|
||||
}).toList(),
|
||||
);
|
||||
|
||||
return SizedBox(
|
||||
child: button,
|
||||
width: width,
|
||||
);
|
||||
}
|
||||
|
||||
SizedBox dropList2(double width) {
|
||||
var button = DropdownButton(
|
||||
hint: const Text(
|
||||
'Select Dot',
|
||||
style: TextStyle(color: Colors.white, fontSize: 13),
|
||||
), // Not necessary for Option 1
|
||||
alignment: AlignmentDirectional.centerEnd,
|
||||
value: dropdownValue2,
|
||||
|
||||
isDense: true,
|
||||
borderRadius: const BorderRadius.all(Radius.circular(20)),
|
||||
dropdownColor: Colors.green.shade800,
|
||||
style: const TextStyle(
|
||||
//background: Paint()..color = Colors.white,
|
||||
color: Colors.white,
|
||||
fontSize: 18,
|
||||
),
|
||||
onChanged: (String? newValue) {
|
||||
setState(() {
|
||||
dropdownValue2 = newValue;
|
||||
});
|
||||
},
|
||||
items: graphData.getDots().map((location) {
|
||||
return DropdownMenuItem(
|
||||
child: Text(location.getName()),
|
||||
value: location.num.toString(),
|
||||
);
|
||||
}).toList(),
|
||||
);
|
||||
|
||||
return SizedBox(
|
||||
child: button,
|
||||
width: width,
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,679 @@
|
|||
import 'dart:io';
|
||||
|
||||
class Separators {
|
||||
static const String dotToConnections = ": ";
|
||||
static const String dotToLength = "|";
|
||||
static const String space = " ";
|
||||
static const String hasLength = "Взвешенный";
|
||||
static const String hasNoLength = "НеВзвешенный";
|
||||
static const String isOriented = "Ориентированный";
|
||||
static const String isNotOriented = "НеОриентированный";
|
||||
static const String nL = "\n";
|
||||
static const String end = "END";
|
||||
|
||||
Separators();
|
||||
}
|
||||
|
||||
class Dot {
|
||||
//Data
|
||||
// ignore: prefer_final_fields
|
||||
String _name = "";
|
||||
int num = -1;
|
||||
Map<int, int> _ln = <int, int>{};
|
||||
|
||||
//****Get****
|
||||
String getName() => _name;
|
||||
bool hasConnection(int n) => _ln.containsKey(n);
|
||||
Map<int, int> getL() => _ln;
|
||||
|
||||
int getLength(int x) {
|
||||
if (hasConnection(x)) {
|
||||
return _ln[x]!;
|
||||
}
|
||||
return -1;
|
||||
}
|
||||
//****Get****
|
||||
|
||||
//Set
|
||||
void setName(String n) => _name = n;
|
||||
|
||||
//Add
|
||||
void addPath(int inp, int length) => _ln[inp] = length;
|
||||
|
||||
//Del
|
||||
void delPath(int n) => _ln.removeWhere((key, value) =>
|
||||
key == n); // удалить обратный путь если не ориентированный
|
||||
|
||||
//Print
|
||||
void printD() {
|
||||
stdout.write("$_name: №$num => ");
|
||||
for (var i in _ln.keys) {
|
||||
stdout.write("$i|${_ln[i]} ");
|
||||
}
|
||||
stdout.write("\n");
|
||||
}
|
||||
|
||||
//******Constructor******
|
||||
Dot([String name = "Undefined", int n = -1]) {
|
||||
_name = name;
|
||||
num = n;
|
||||
_ln = <int, int>{};
|
||||
}
|
||||
Dot.fromTwoLists(String name, List<int> num0, List<int> length,
|
||||
[int n = -1]) {
|
||||
_name = name;
|
||||
num = n;
|
||||
Map<int, int> nw = <int, int>{};
|
||||
if (num0.length != length.length) {
|
||||
print("Error in lists");
|
||||
} else {
|
||||
for (var i = 0; i < num0.length; i++) {
|
||||
nw[num0[i]] = length[i];
|
||||
_ln = nw;
|
||||
}
|
||||
}
|
||||
}
|
||||
Dot.fromMap(String name, Map<int, int> l, [int n = -1]) {
|
||||
_name = name;
|
||||
num = n;
|
||||
_ln = l;
|
||||
}
|
||||
//******Constructor******
|
||||
|
||||
//Copy
|
||||
Dot.clone(Dot a) {
|
||||
_name = a.getName();
|
||||
num = a.num;
|
||||
_ln = a.getL();
|
||||
}
|
||||
}
|
||||
|
||||
class Graphs {
|
||||
//Data
|
||||
String _name = "Undefined"; //Имя
|
||||
int _amount = 0; //Количество вершин
|
||||
List<Dot> _dots = <Dot>[]; //Список смежности вершин
|
||||
Map<int, String> _nameTable = <int, String>{}; //Список вершин по именам
|
||||
bool _useLength = false; //Взвешенность
|
||||
bool _oriented = false; //Ориентированность
|
||||
|
||||
//*********************Add************************
|
||||
String? addDot(Dot a) {
|
||||
if (getNumByName(a.getName()) != null) {
|
||||
return ("Dot name \"${a.getName()}\" already in use. Change name or use addPath");
|
||||
}
|
||||
_amount++;
|
||||
a.num = _amount;
|
||||
_dots.add(a);
|
||||
_syncNameTable();
|
||||
checkDots(false);
|
||||
if (!_oriented) _fullFix();
|
||||
return null;
|
||||
}
|
||||
|
||||
bool addDotFromToLists(String name, List<int> num0, List<int> length,
|
||||
[int n = -1]) {
|
||||
var a = Dot.fromTwoLists(name, num0, length, n);
|
||||
if (getNumByName(a.getName()) != null) {
|
||||
print(
|
||||
"Dot name ${a.getName()} already in use. Change name or use addPath");
|
||||
return false;
|
||||
}
|
||||
_amount++;
|
||||
a.num = _amount;
|
||||
_dots.add(a);
|
||||
_syncNameTable();
|
||||
checkDots(false);
|
||||
if (!_oriented) _fixPathAfterInsert(a);
|
||||
return true;
|
||||
}
|
||||
|
||||
String? addIsolated(String name) {
|
||||
var res = addDot(Dot.fromTwoLists(name, [], []));
|
||||
_syncNameTable();
|
||||
return res;
|
||||
}
|
||||
|
||||
String? addPath(int from, int to, [int len = 0]) {
|
||||
if (from <= 0 || from > _amount || to <= 0 && to > _amount) {
|
||||
return "Index out of range. Have dots 1..$_amount";
|
||||
}
|
||||
_dots[from - 1].addPath(to, len);
|
||||
if (!_oriented) {
|
||||
_dots[to - 1].addPath(from, len);
|
||||
}
|
||||
return null;
|
||||
}
|
||||
//*********************Add************************
|
||||
|
||||
//*********Delete*********
|
||||
String? delPath(int from, int to) {
|
||||
if (from <= 0 || from > _amount || to <= 0 && to > _amount) {
|
||||
return "Can't find specified path";
|
||||
}
|
||||
_dots[from - 1].delPath(to);
|
||||
if (!_oriented) {
|
||||
_dots[to - 1].delPath(from);
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
String? delDot(int inn) {
|
||||
if (inn > _amount || inn < 1) {
|
||||
return "Index out of range. Allowed 1..$_amount";
|
||||
}
|
||||
List<int> toDel = <int>[];
|
||||
for (int i in _dots[inn - 1].getL().keys) {
|
||||
toDel.add(i);
|
||||
}
|
||||
for (int i in toDel) {
|
||||
delPath(i, inn);
|
||||
}
|
||||
_dots.removeAt(inn - 1);
|
||||
_syncNum();
|
||||
_syncNameTable();
|
||||
_fixAfterDel(inn);
|
||||
return null;
|
||||
}
|
||||
|
||||
void flushData() {
|
||||
_dots = <Dot>[];
|
||||
_amount = 0;
|
||||
_nameTable = <int, String>{};
|
||||
}
|
||||
//*********Delete*********
|
||||
|
||||
//******Helper*******
|
||||
bool checkDots([bool verbose = false]) {
|
||||
for (var a in _dots) {
|
||||
for (var i in a.getL().keys) {
|
||||
try {
|
||||
if (!_dots[i - 1].getL().containsKey(a.num)) {
|
||||
if (verbose) print("Can't find ${a.num}");
|
||||
return false;
|
||||
}
|
||||
} catch (e) {
|
||||
if (verbose) {
|
||||
print("Can't find Dot $i for path ${a.num}->$i. Exception $e");
|
||||
}
|
||||
_dots[a.num - 1].getL().remove(i);
|
||||
return false;
|
||||
}
|
||||
}
|
||||
}
|
||||
return true;
|
||||
}
|
||||
|
||||
void _fixAfterDel(int inn) {
|
||||
for (int i = 0; i < _dots.length; i++) {
|
||||
Map<int, int> l = <int, int>{};
|
||||
for (int j in _dots[i].getL().keys) {
|
||||
if (j >= inn) {
|
||||
l[j - 1] = _dots[i].getL()[j]!;
|
||||
} else {
|
||||
l[j] = _dots[i].getL()[j]!;
|
||||
}
|
||||
}
|
||||
_dots[i] = Dot.fromMap(_dots[i].getName(), l, _dots[i].num);
|
||||
}
|
||||
}
|
||||
|
||||
void _fixPathAfterInsert(Dot a) {
|
||||
//Для неориентированного
|
||||
for (var i in a.getL().keys) {
|
||||
if (!_dots[i - 1].getL().containsKey(a.num)) {
|
||||
addPath(i, a.num, a.getL()[i]!);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void _fullFix() {
|
||||
for (var i in _dots) {
|
||||
_fixPathAfterInsert(i);
|
||||
}
|
||||
}
|
||||
|
||||
void _syncNameTable() {
|
||||
_nameTable = <int, String>{};
|
||||
for (var i in _dots) {
|
||||
_nameTable[i.num] = i.getName();
|
||||
}
|
||||
}
|
||||
|
||||
void _syncNum() {
|
||||
_amount = 0;
|
||||
for (var i in _dots) {
|
||||
i.num = ++_amount;
|
||||
}
|
||||
_syncNameTable();
|
||||
}
|
||||
//******Helper*******
|
||||
|
||||
//*****Setters*******
|
||||
void setName(String name) => _name = name;
|
||||
String? flipUseOrientation() {
|
||||
if (_amount != 0) {
|
||||
return "Can change use of orientation only in empty graph";
|
||||
}
|
||||
_oriented = !_oriented;
|
||||
return null;
|
||||
}
|
||||
|
||||
String? flipUseLength() {
|
||||
if (_amount != 0) {
|
||||
return "Can change use of length only in empty graph";
|
||||
}
|
||||
_useLength = !_useLength;
|
||||
return null;
|
||||
}
|
||||
|
||||
String? replaceDataFromFile(String path) {
|
||||
File file = File(path);
|
||||
List<String> lines = file.readAsLinesSync();
|
||||
if (lines.length < 3) {
|
||||
return "Not enough lines in file";
|
||||
}
|
||||
String name = lines.removeAt(0);
|
||||
bool oriented;
|
||||
switch (lines.removeAt(0)) {
|
||||
case Separators.isOriented:
|
||||
oriented = true;
|
||||
break;
|
||||
case Separators.isNotOriented:
|
||||
oriented = false;
|
||||
break;
|
||||
default:
|
||||
return "Error on parsing \"IsOriented\"";
|
||||
}
|
||||
bool useLength;
|
||||
switch (lines.removeAt(0).trim()) {
|
||||
case Separators.hasLength:
|
||||
useLength = true;
|
||||
break;
|
||||
case Separators.hasNoLength:
|
||||
useLength = false;
|
||||
break;
|
||||
default:
|
||||
return "Error on parsing \"HasLength\"";
|
||||
}
|
||||
List<Dot> dots = <Dot>[];
|
||||
for (var l in lines) {
|
||||
l = l.trimRight();
|
||||
if (l != Separators.end) {
|
||||
var spl = l.split(Separators.space);
|
||||
List<int> dot = <int>[];
|
||||
List<int> len = <int>[];
|
||||
String name = spl.removeAt(0);
|
||||
name = name.substring(0, name.length - 1);
|
||||
for (var splitted in spl) {
|
||||
if (splitted != "") {
|
||||
var dt = splitted.split(Separators.dotToLength);
|
||||
if (dt.length == 2) {
|
||||
int? parsed = int.tryParse(dt[0]);
|
||||
if (parsed == null) {
|
||||
return "Error while parsing file\nin parsing int in \"${dt[0]}\"";
|
||||
}
|
||||
dot.add(parsed);
|
||||
if (useLength) {
|
||||
parsed = int.tryParse(dt[1]);
|
||||
if (parsed == null) {
|
||||
return "Error while parsing file\nin parsing int in \"${dt[1]}\"";
|
||||
}
|
||||
len.add(parsed);
|
||||
} else {
|
||||
len.add(0);
|
||||
}
|
||||
} else if (dt.length == 1) {
|
||||
int? parsed = int.tryParse(splitted);
|
||||
if (parsed == null) {
|
||||
return "Error while parsing file\nin parsing int in \"$splitted\"";
|
||||
}
|
||||
dot.add(parsed);
|
||||
len.add(0);
|
||||
}
|
||||
}
|
||||
}
|
||||
dots.add(Dot.fromTwoLists(name, dot, len));
|
||||
}
|
||||
}
|
||||
_name = name;
|
||||
_oriented = oriented;
|
||||
_useLength = useLength;
|
||||
_dots = dots;
|
||||
_syncNum();
|
||||
_syncNameTable();
|
||||
if (!_oriented) _fullFix();
|
||||
return null;
|
||||
}
|
||||
//*****Setters*******
|
||||
|
||||
//*****Getters*******
|
||||
bool getDoubleSidedBool() => _oriented;
|
||||
String getDoubleSidedStr() {
|
||||
if (_oriented) return Separators.isOriented;
|
||||
return Separators.isNotOriented;
|
||||
}
|
||||
|
||||
bool getUseLengthBool() => _useLength;
|
||||
String getUseLengthStr() {
|
||||
if (_useLength) return Separators.hasLength;
|
||||
return Separators.hasNoLength;
|
||||
}
|
||||
|
||||
List<Dot> getDots() => _dots;
|
||||
String getName() => _name;
|
||||
String? getNameByNum(int n) => _nameTable[n];
|
||||
Map<int, String> getNameTable() => _nameTable;
|
||||
int getDotAmount() => _dots.length;
|
||||
int? getNumByName(String n) {
|
||||
for (var i in _nameTable.keys) {
|
||||
if (_nameTable[i] == n) return i;
|
||||
}
|
||||
return null;
|
||||
}
|
||||
|
||||
List<List<int>>? getLenTable() {
|
||||
List<List<int>>? out = <List<int>>[];
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
List<int> xx = <int>[];
|
||||
for (int j = 1; j <= _amount; j++) {
|
||||
xx.add(_dots[i].getLength(j));
|
||||
}
|
||||
out.add(xx);
|
||||
}
|
||||
return out;
|
||||
}
|
||||
|
||||
List<List<int>>? getPathTable() {
|
||||
List<List<int>>? out = <List<int>>[];
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
List<int> xx = <int>[];
|
||||
for (int j = 1; j <= _amount; j++) {
|
||||
if (_dots[i].getLength(j) != -1) {
|
||||
xx.add(i);
|
||||
} else {
|
||||
xx.add(-1);
|
||||
}
|
||||
}
|
||||
out.add(xx);
|
||||
}
|
||||
return out;
|
||||
}
|
||||
|
||||
/*List<Dot> getNoRepeatDots() {
|
||||
List<Dot> ret = <Dot>[];
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
ret.add(Dot(_dots[i].getName(), _dots[i].num));
|
||||
}
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
for (int j in _dots[i].getL().keys) {
|
||||
if (!ret[j - 1].hasConnection(i + 1) && !ret[i].hasConnection(j) ||
|
||||
i == j) {
|
||||
var len = _dots[i].getLength(j);
|
||||
ret[i].addPath(j, len);
|
||||
}
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}*/
|
||||
//*****Getters*******
|
||||
|
||||
//******Print******
|
||||
void printG() {
|
||||
stdout.write("$_name: ");
|
||||
if (_oriented) {
|
||||
stdout.write("Ориентированный, ");
|
||||
} else {
|
||||
stdout.write("Не ориентированный, ");
|
||||
}
|
||||
if (_useLength) {
|
||||
print("Взвешенный");
|
||||
} else {
|
||||
print("Не взвешенный");
|
||||
}
|
||||
for (var i in _dots) {
|
||||
i.printD();
|
||||
}
|
||||
}
|
||||
|
||||
void printToFile(String name) {
|
||||
var file = File(name);
|
||||
file.writeAsStringSync("$_name\n");
|
||||
if (_oriented) {
|
||||
file.writeAsStringSync("${Separators.isOriented}\n",
|
||||
mode: FileMode.append);
|
||||
} else {
|
||||
file.writeAsStringSync("${Separators.isNotOriented}\n",
|
||||
mode: FileMode.append);
|
||||
}
|
||||
if (_useLength) {
|
||||
file.writeAsStringSync("${Separators.hasLength}\n",
|
||||
mode: FileMode.append);
|
||||
} else {
|
||||
file.writeAsStringSync("${Separators.hasNoLength}\n",
|
||||
mode: FileMode.append);
|
||||
}
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
file.writeAsStringSync((i + 1).toString() + Separators.dotToConnections,
|
||||
mode: FileMode.append);
|
||||
var d = _dots[i].getL();
|
||||
for (var j in d.keys) {
|
||||
file.writeAsStringSync(
|
||||
j.toString() + Separators.dotToLength + d[j].toString() + " ",
|
||||
mode: FileMode.append);
|
||||
}
|
||||
file.writeAsStringSync(Separators.nL, mode: FileMode.append);
|
||||
}
|
||||
file.writeAsStringSync(Separators.end, mode: FileMode.append);
|
||||
}
|
||||
//******Print******
|
||||
|
||||
//*******Constructor********
|
||||
Graphs(
|
||||
[String name = "Undefined",
|
||||
bool hasLen = false,
|
||||
bool isOriented = false]) {
|
||||
_name = name;
|
||||
_dots = <Dot>[];
|
||||
_useLength = hasLen;
|
||||
_oriented = isOriented;
|
||||
_amount = 0;
|
||||
_nameTable = <int, String>{};
|
||||
}
|
||||
Graphs.fromList(String name, List<Dot> dots, bool hasLen, bool oriented) {
|
||||
_name = name;
|
||||
_dots = dots;
|
||||
_useLength = hasLen;
|
||||
_amount = _dots.length;
|
||||
_oriented = oriented;
|
||||
_syncNum();
|
||||
if (!_oriented) _fullFix();
|
||||
}
|
||||
Graphs.fromFile(String path) {
|
||||
replaceDataFromFile(path);
|
||||
/*File file = File(path);
|
||||
List<String> lines = file.readAsLinesSync();
|
||||
_name = lines.removeAt(0);
|
||||
_oriented = lines.removeAt(0) == Separators.isOriented.trim();
|
||||
_useLength = lines.removeAt(0) == Separators.hasLength.trim();
|
||||
_dots = <Dot>[];
|
||||
for (var l in lines) {
|
||||
if (l != Separators.end) {
|
||||
var spl = l.split(Separators.space);
|
||||
List<int> dot = <int>[];
|
||||
List<int> len = <int>[];
|
||||
String name = spl.removeAt(0);
|
||||
name = name.substring(0, name.length - 1);
|
||||
for (var splitted in spl) {
|
||||
var dt = splitted.split(Separators.dotToLength);
|
||||
if (dt.length == 2) {
|
||||
dot.add(int.parse(dt[0]));
|
||||
if (_useLength) {
|
||||
len.add(int.parse(dt[1]));
|
||||
} else {
|
||||
len.add(0);
|
||||
}
|
||||
} else if (dt.length == 1) {
|
||||
dot.add(int.parse(splitted));
|
||||
len.add(0);
|
||||
}
|
||||
}
|
||||
_dots.add(Dot.fromTwoLists(name, dot, len));
|
||||
}
|
||||
}
|
||||
_syncNum();
|
||||
_syncNameTable();
|
||||
if (!_oriented) _fullFix();*/
|
||||
}
|
||||
//*******Constructor********
|
||||
|
||||
//Copy
|
||||
Graphs.clone(Graphs a) {
|
||||
_name = a.getName();
|
||||
_dots = a.getDots();
|
||||
_oriented = a.getDoubleSidedBool();
|
||||
_useLength = a.getUseLengthBool();
|
||||
_amount = _dots.length;
|
||||
_syncNameTable();
|
||||
}
|
||||
|
||||
//************Алгоритмы************
|
||||
/* bool bfsHasPath(int startDot, int goalDot) {
|
||||
// обход в ширину
|
||||
startDot--;
|
||||
goalDot--;
|
||||
List<bool> visited = <bool>[];
|
||||
List<int> queue = <int>[];
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
visited.add(false);
|
||||
} // изначально список посещённых узлов пуст
|
||||
queue.add(startDot); // начиная с узла-источника
|
||||
visited[startDot] = true;
|
||||
while (queue.isNotEmpty) {
|
||||
// пока очередь не пуста
|
||||
int node = queue.removeAt(0); // извлечь первый элемент в очереди
|
||||
if (node == goalDot) {
|
||||
return true; // проверить, не является ли текущий узел целевым
|
||||
}
|
||||
for (int child in _dots[node].getL().keys) {
|
||||
// все преемники текущего узла, ...
|
||||
if (!visited[child - 1]) {
|
||||
// ... которые ещё не были посещены ...
|
||||
queue.add(child - 1); // ... добавить в конец очереди...
|
||||
visited[child - 1] = true; // ... и пометить как посещённые
|
||||
}
|
||||
}
|
||||
}
|
||||
return false; // Целевой узел недостижим
|
||||
}*/
|
||||
|
||||
List<int>? bfsPath(int startDot, int goalDot) {
|
||||
if (startDot == goalDot) return [startDot];
|
||||
//if (!bfsHasPath(startDot, goalDot)) return null;
|
||||
startDot--;
|
||||
goalDot--;
|
||||
List<List<int>>? graph = getLenTable();
|
||||
List<bool> used = <bool>[];
|
||||
List<int> dst = <int>[];
|
||||
List<int> pr = <int>[];
|
||||
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
dst.add(-1);
|
||||
used.add(false);
|
||||
pr.add(0);
|
||||
}
|
||||
|
||||
List<int> q = <int>[];
|
||||
q.add(startDot);
|
||||
used[startDot] = true;
|
||||
dst[startDot] = 0;
|
||||
pr[startDot] =
|
||||
-1; //Пометка, означающая, что у вершины startDot нет предыдущей.
|
||||
|
||||
while (q.isNotEmpty) {
|
||||
int cur = q.removeAt(0);
|
||||
int x = 0;
|
||||
for (int neighbor in graph![cur]) {
|
||||
if (neighbor != -1) {
|
||||
if (!used[x]) {
|
||||
q.add(x);
|
||||
used[x] = true;
|
||||
dst[x] = dst[cur] + 1;
|
||||
pr[x] = cur; //сохранение предыдущей вершины
|
||||
}
|
||||
}
|
||||
x++;
|
||||
}
|
||||
}
|
||||
|
||||
//Восстановим кратчайший путь
|
||||
//Для восстановления пути пройдём его в обратном порядке, и развернём.
|
||||
List<int> path = <int>[];
|
||||
|
||||
int cur = goalDot; //текущая вершина пути
|
||||
path.add(cur + 1);
|
||||
|
||||
while (pr[cur] != -1) {
|
||||
//пока существует предыдущая вершина
|
||||
cur = pr[cur]; //переходим в неё
|
||||
path.add(cur + 1); //и дописываем к пути
|
||||
}
|
||||
|
||||
path = path.reversed.toList();
|
||||
|
||||
//print("Shortest path between vertices ${startDot+1} and ${goalDot+1} is: $path");
|
||||
if (path[0] == (startDot + 1) &&
|
||||
path[1] == (goalDot + 1) &&
|
||||
!_dots[startDot].hasConnection(goalDot + 1)) return null;
|
||||
return path;
|
||||
}
|
||||
|
||||
List<bool>? dfsIterative(int v) {
|
||||
v--;
|
||||
//List<int>? pos = <int>[];
|
||||
List<bool> label = <bool>[];
|
||||
for (int i = 0; i < _amount; i++) {
|
||||
label.add(false);
|
||||
}
|
||||
List<int> stack = <int>[];
|
||||
stack.add(v);
|
||||
//pos.add(v);
|
||||
while (stack.isNotEmpty) {
|
||||
v = stack.removeLast();
|
||||
if (!label[v]) {
|
||||
label[v] = true;
|
||||
for (int i in _dots[v].getL().keys) {
|
||||
stack.add(i - 1);
|
||||
//pos.add(i);
|
||||
}
|
||||
}
|
||||
}
|
||||
//print(pos);
|
||||
return label;
|
||||
}
|
||||
|
||||
void dijkstra(int source) {
|
||||
/*
|
||||
create vertex set Q;
|
||||
|
||||
for each vertex v in Graph{
|
||||
dist[v] ← INFINITY ;
|
||||
prev[v] ← UNDEFINED ;
|
||||
add v to Q;}
|
||||
dist[source] ← 0;
|
||||
|
||||
while Q is not empty{
|
||||
u ← vertex in Q with min dist[u]
|
||||
|
||||
remove u from Q
|
||||
|
||||
for each neighbor v of u still in Q{
|
||||
alt ← dist[u] + length(u, v);
|
||||
if alt < dist[v]: {
|
||||
dist[v] ← alt;
|
||||
prev[v] ← u;}
|
||||
}}
|
||||
return dist[], prev[]*/
|
||||
}
|
||||
//************Алгоритмы************
|
||||
}
|
||||
Loading…
Reference in New Issue