package bianjie;
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import java.awt.BasicStroke;
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import java.awt.Color;
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import java.awt.Graphics2D;
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import java.awt.geom.Ellipse2D;
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import java.awt.geom.Path2D;
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import java.awt.geom.Point2D;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* 手动绘制边界绘制器
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* 用于处理手动绘制边界模式的所有功能
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*/
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public class shudongdraw {
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// 手动绘制边界模式状态
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private boolean manualBoundaryDrawingMode = false;
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// 手动绘制的边界点列表
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private final List<Point2D.Double> manualBoundaryPoints = new ArrayList<>();
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// 鼠标实时位置（世界坐标）
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private Point2D.Double manualBoundaryMousePosition = null;
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// 颜色定义
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private static final Color MANUAL_BOUNDARY_COLOR = new Color(255, 0, 0); // 红色
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private static final Color MANUAL_BOUNDARY_FILL_COLOR = new Color(255, 0, 0, 50); // 半透明红色填充
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private static final Color MOUSE_POSITION_COLOR = new Color(255, 0, 0, 128); // 半透明红色（鼠标位置）
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/**
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* 设置手动绘制边界模式
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*/
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public void setManualBoundaryDrawingMode(boolean active) {
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manualBoundaryDrawingMode = active;
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if (!active) {
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manualBoundaryPoints.clear();
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manualBoundaryMousePosition = null;
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}
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}
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/**
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* 检查手动绘制边界模式是否激活
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*/
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public boolean isManualBoundaryDrawingMode() {
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return manualBoundaryDrawingMode;
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}
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/**
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* 处理鼠标点击，添加边界点
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*/
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public boolean handleClick(Point2D.Double worldPoint) {
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if (!manualBoundaryDrawingMode) {
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return false;
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}
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manualBoundaryPoints.add(worldPoint);
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return true;
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}
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/**
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* 更新鼠标位置
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*/
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public void updateMousePosition(Point2D.Double worldPoint) {
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if (manualBoundaryDrawingMode) {
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manualBoundaryMousePosition = worldPoint;
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} else {
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manualBoundaryMousePosition = null;
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}
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}
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/**
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* 清除鼠标位置
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*/
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public void clearMousePosition() {
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manualBoundaryMousePosition = null;
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}
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/**
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* 获取手动绘制的边界点列表
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*/
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public List<Point2D.Double> getManualBoundaryPoints() {
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return new ArrayList<>(manualBoundaryPoints);
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}
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/**
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* 清空手动绘制的边界点
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*/
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public void clearManualBoundaryPoints() {
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manualBoundaryPoints.clear();
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}
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/**
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* 绘制手动绘制的边界
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*/
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public void drawBoundary(Graphics2D g2d, double scale) {
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if (!manualBoundaryDrawingMode || manualBoundaryPoints.isEmpty()) {
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return;
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}
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List<Point2D.Double> points = manualBoundaryPoints;
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if (points == null || points.isEmpty()) {
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return;
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}
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// 保存原始状态
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Color originalColor = g2d.getColor();
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BasicStroke originalStroke = (BasicStroke) g2d.getStroke();
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// 如果点数>=3，绘制填充区域
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if (points.size() >= 3) {
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Path2D.Double fillPath = new Path2D.Double();
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fillPath.moveTo(points.get(0).x, points.get(0).y);
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for (int i = 1; i < points.size(); i++) {
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fillPath.lineTo(points.get(i).x, points.get(i).y);
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}
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fillPath.closePath(); // 自动连接起点和终点
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g2d.setColor(MANUAL_BOUNDARY_FILL_COLOR);
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g2d.fill(fillPath);
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}
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// 计算线条宽度（用于绘制点和边界线）
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float strokeWidth = (float) (3 / Math.max(0.5, scale));
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// 绘制边界线（至少需要2个点）
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if (points.size() >= 2) {
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g2d.setStroke(new BasicStroke(strokeWidth, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
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g2d.setColor(MANUAL_BOUNDARY_COLOR);
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Path2D.Double borderPath = new Path2D.Double();
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borderPath.moveTo(points.get(0).x, points.get(0).y);
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for (int i = 1; i < points.size(); i++) {
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borderPath.lineTo(points.get(i).x, points.get(i).y);
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}
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// 自动连接起点和终点
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if (points.size() >= 3) {
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borderPath.closePath();
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}
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g2d.draw(borderPath);
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}
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// 绘制点标记 - 实心圆圈，圆圈直径是线条宽度的2倍
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// 即使只有一个点也要绘制
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if (points.size() >= 1) {
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// 将线条宽度转换为世界坐标的直径，直径是线条宽度的2倍
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double pointDiameter = (strokeWidth * 2) / scale;
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g2d.setColor(MANUAL_BOUNDARY_COLOR);
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for (Point2D.Double point : points) {
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Ellipse2D.Double marker = new Ellipse2D.Double(
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point.x - pointDiameter / 2,
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point.y - pointDiameter / 2,
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pointDiameter,
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pointDiameter
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);
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g2d.fill(marker); // 实心圆圈
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}
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}
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// 恢复原始状态
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g2d.setColor(originalColor);
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g2d.setStroke(originalStroke);
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}
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/**
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* 绘制鼠标实时位置（手动绘制边界模式时）
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*/
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public void drawMousePosition(Graphics2D g2d, double scale) {
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if (!manualBoundaryDrawingMode || manualBoundaryMousePosition == null) {
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return;
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}
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Point2D.Double mousePos = manualBoundaryMousePosition;
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if (mousePos == null || !Double.isFinite(mousePos.x) || !Double.isFinite(mousePos.y)) {
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return;
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}
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// 保存原始状态
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Color originalColor = g2d.getColor();
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BasicStroke originalStroke = (BasicStroke) g2d.getStroke();
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// 计算线条宽度
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float strokeWidth = (float) (3 / Math.max(0.5, scale));
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// 鼠标位置圆圈直径是线条宽度的2倍
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double mouseCircleDiameter = (strokeWidth * 2) / scale;
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// 绘制鼠标位置的圆圈（使用半透明颜色）
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g2d.setColor(MOUSE_POSITION_COLOR);
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Ellipse2D.Double mouseCircle = new Ellipse2D.Double(
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mousePos.x - mouseCircleDiameter / 2,
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mousePos.y - mouseCircleDiameter / 2,
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mouseCircleDiameter,
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mouseCircleDiameter
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);
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g2d.fill(mouseCircle);
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// 恢复原始状态
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g2d.setColor(originalColor);
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g2d.setStroke(originalStroke);
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}
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}
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