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- import { SMouseEvent } from "@persagy-web/base/lib";
- import { ItemOrder } from "@persagy-web/big/lib";
- import { SMathUtil } from "@persagy-web/big/lib/utils/SMathUtil";
- import { SColor, SLineCapStyle, SPainter, SPoint, SPolygonUtil, SRect } from "@persagy-web/draw/lib";
- import { SGraphItem, SGraphStyleItem } from "@persagy-web/graph/lib";
- /**
- * 遮罩item
- *
- * @author 郝建龙
- */
- export class ShadeItem extends SGraphStyleItem {
- /** X 坐标最小值 */
- private minX = Number.MAX_SAFE_INTEGER;
- /** X 坐标最大值 */
- private maxX = Number.MIN_SAFE_INTEGER;
- /** Y 坐标最小值 */
- private minY = Number.MAX_SAFE_INTEGER;
- /** Y 坐标最大值 */
- private maxY = Number.MIN_SAFE_INTEGER;
- /** 轮廓线坐标 */
- pointList: SPoint[] = [];
- /** 是否闭合 */
- closeFlag = false;
- /** 鼠标移动点 */
- private lastPoint = new SPoint();
- /**
- * 构造函数
- *
- * @param parent 指向父对象
- * @param data 遮罩起点数据
- */
- constructor(parent: SGraphItem | null, data: SPoint); // Constructor
- /**
- * 构造函数
- *
- * @param parent 指向父对象
- * @param data 遮罩轮廓线数据
- */
- constructor(parent: SGraphItem | null, data: SPoint[]); // Constructor
- /**
- * 构造函数
- *
- * @param parent 指向父对象
- * @param data 遮罩起点数据 | 遮罩轮廓线数据
- */
- constructor(parent: SGraphItem | null, data: SPoint[] | SPoint) {
- super(parent);
- if (data instanceof Array) {
- this.pointList = data;
- this.createMask();
- } else {
- this.pointList.push(data);
- this.lastPoint = data;
- }
- this.zOrder = ItemOrder.shadeOrder;
- this.fillColor = new SColor('#00000080')
- } // Constructor
- /**
- * 鼠标按下事件
- *
- * @param event 事件参数
- * @return boolean
- */
- onMouseDown(event: SMouseEvent): boolean {
- if (!this.closeFlag && event.buttons == 1) {
- if (
- this.lastPoint.x == this.pointList[0].x &&
- this.lastPoint.y == this.pointList[0].y &&
- this.pointList.length >= 3
- ) {
- this.createMask();
- return true;
- }
- let p = new SPoint(event.x, event.y);
- this.lastPoint.x = p.x;
- this.lastPoint.y = p.y;
- this.pointList.push(p);
- }
- this.update();
- return true;
- } // Function onMouseDown()
- /**
- * 鼠标移动事件
- *
- * @param event 事件参数
- * @return boolean
- */
- onMouseMove(event: SMouseEvent): boolean {
- if (!this.closeFlag) {
- this.lastPoint = new SPoint(event.x, event.y);
- if (this.pointList.length >= 3) {
- let le = SMathUtil.pointDistance(
- this.lastPoint.x,
- this.lastPoint.y,
- this.pointList[0].x,
- this.pointList[0].y
- );
- // @ts-ignore
- let scale = this.parent.scene.view.scale;
- if (le * scale < 30) {
- this.lastPoint.x = this.pointList[0].x;
- this.lastPoint.y = this.pointList[0].y;
- }
- }
- }
- this.update();
- return true;
- } // Function onMouseMove()
- /**
- * 鼠标抬起事件
- *
- * @param event 事件参数
- * @return boolean
- */
- onMouseUp(event: SMouseEvent): boolean {
- return false;
- } // Function onMouseUp()
- /***
- * 键盘按键弹起事件
- *
- * @param event 事件参数
- */
- onKeyUp(event: KeyboardEvent): void {
- if (event.keyCode == 13 && this.pointList.length >= 3) {
- this.createMask();
- }
- } // Function onKeyUp()
- /**
- * 创建蒙版
- *
- */
- createMask(): void {
- this.closeFlag = true;
- this.releaseItem();
- this.calRect();
- this.$emit('createSuc')
- this.update();
- } // Function createMask()
- /**
- * 计算最大最小值
- */
- calRect() {
- // 点集存在
- if (this.pointList.length) {
- this.minX = this.pointList[0].x;
- this.maxX = this.pointList[0].x;
- this.minY = this.pointList[0].y;
- this.maxY = this.pointList[0].y;
- // 遍历点集并计算最大最小值
- this.pointList.forEach((it): void => {
- let x = it.x,
- y = it.y;
- if (x < this.minX) {
- this.minX = x;
- }
- if (y < this.minY) {
- this.minY = y;
- }
- if (x > this.maxX) {
- this.maxX = x;
- }
- if (y > this.maxY) {
- this.maxY = y;
- }
- });
- }
- }
- /**
- * Item 对象边界区域
- *
- * @return 边界区域
- */
- boundingRect(): SRect {
- return new SRect(
- this.minX,
- this.minY,
- this.maxX - this.minX,
- this.maxY - this.minY
- );
- }
- /**
- * 判断点是否在区域内
- *
- * @param x
- * @param y
- */
- contains(x: number, y: number): boolean {
- let arr = this.pointList;
- return SPolygonUtil.pointIn(x, y, arr);
- } // Function contains()
- /**
- * Item绘制操作
- *
- * @param painter painter对象
- */
- onDraw(painter: SPainter): void {
- painter.pen.lineCapStyle = SLineCapStyle.Square;
- if (this.closeFlag) {
- painter.pen.color = SColor.Transparent;
- painter.brush.color = this.fillColor;
- painter.drawPolygon(this.pointList);
- } else {
- painter.pen.color = new SColor("#ff0000");
- painter.pen.lineWidth = painter.toPx(3);
- painter.drawPolyline(this.pointList);
- painter.drawLine(
- this.pointList[this.pointList.length - 1],
- this.lastPoint
- );
- }
- } // Function onDraw()
- } // Class SceneMarkItem
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