116 lines
4.1 KiB
Dart
116 lines
4.1 KiB
Dart
import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:get/get.dart';
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import 'package:scence_map/controllers/controller.dart';
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import 'package:scence_map/controllers/plumController.dart';
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ScenceMapController mapController = Get.find<ScenceMapController>();
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class DrawDirection extends CustomPainter {
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PlumDataController controller;
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Offset pos;
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bool isDarkMode;
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bool isInit;
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DrawDirection(this.controller, this.pos, this.isDarkMode, this.isInit);
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@override
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void paint(Canvas canvas, Size size) {
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controller.canvasSize = size;
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final paint = Paint();
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Path path = Path();
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paint
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..strokeWidth = 2
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..style = PaintingStyle.stroke
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..color = isDarkMode ? Colors.white : Colors.black;
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if (controller.linePointOffset.value == Offset.zero ||
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controller.centerXY.value == Offset.zero) {
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return;
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}
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Offset linePointOffset = mapController.xy2Screen(
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controller.linePointXY.value.dx, controller.linePointXY.value.dy);
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Offset centerOffset = controller.centerOffset.value;
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Offset centerXY = controller.centerXY.value;
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if (isInit) {
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linePointOffset = linePointOffset + pos;
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centerOffset = controller.centerOffset.value + pos;
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}
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print("-----矩阵中心$centerOffset,$centerXY");
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path.moveTo(centerOffset.dx, centerOffset.dy);
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path.lineTo(linePointOffset.dx, linePointOffset.dy);
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canvas.drawPath(path, paint);
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paint.style = PaintingStyle.fill;
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canvas.drawCircle(linePointOffset, 10, paint);
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// canvas.translate(centerOffset.dx, centerOffset.dy);
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// canvas.rotate(controller.angle.value);
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// canvas.translate(-centerOffset.dx, -centerOffset.dy);
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paint
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// ..color = Colors.grey.withOpacity(.4)
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.style = PaintingStyle.stroke;
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if (controller.isUp.value && controller.angle.value != 0) {
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double unit =
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mapController.plottingScale.value / mapController.pixel2MeterRatio;
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// 沿着路径绘制圆圈
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double distance = (linePointOffset - centerOffset).distance;
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int horizonalCircles = (distance / unit).floor();
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int verticalCircles = (controller.pileWidth / unit).floor();
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// controller.plumList.length = 0;
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List<Offset> circlePoints = [];
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// List<Offset> plumList = [];
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controller.plumList.length = 0;
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for (int i = 0; i <= horizonalCircles; i++) {
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double t = i * unit / distance;
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Offset point = Offset.lerp(centerOffset, linePointOffset, t)!;
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canvas.drawCircle(point, .3 / mapController.pixel2MeterRatio, paint);
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circlePoints.add(point);
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// Offset xy = mapController.screen2xy(point.dx, point.dy);
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// plumList.add(Offset(xy.dx, xy.dy));
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controller.plumList.add(point);
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}
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// 在反方向延长线上绘制对称的圆圈
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for (int i = 1; i <= horizonalCircles; i++) {
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double t = i * unit / distance;
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Offset point = Offset.lerp(centerOffset, linePointOffset, -t)!;
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canvas.drawCircle(point, .3 / mapController.pixel2MeterRatio, paint);
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circlePoints.add(point);
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controller.plumList.add(point);
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//List保存
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}
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// 计算垂直于path的方向向量
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Offset direction =
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(linePointOffset - centerOffset).scale(1 / distance, 1 / distance);
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Offset perpendicular = Offset(-direction.dy, direction.dx);
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// 绘制上下方的圆圈，形成正方形矩阵
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for (Offset point in circlePoints) {
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for (int j = 0; j <= verticalCircles / 2; j++) {
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Offset upPoint = point + perpendicular * (j * unit);
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Offset downPoint = point - perpendicular * (j * unit);
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canvas.drawCircle(
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upPoint, .3 / mapController.pixel2MeterRatio, paint);
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canvas.drawCircle(
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downPoint, .3 / mapController.pixel2MeterRatio, paint);
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// Offset xy = mapController.screen2xy0(upPoint);
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// Offset xy1 = mapController.screen2xy0(downPoint);
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controller.plumList.add(upPoint);
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controller.plumList.add(downPoint);
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}
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}
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}
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}
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@override
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bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
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}
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