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import { Point } from './Point.js';
import { Shape } from './Shape.js';
import { type TableCell, TableData, type TableRow } from './TableData.js';
export class Table {
public hLines: Array<Line> = [];
public vLines: Array<Line> = [];
constructor(line: Line) {
if (line.direction === LineDirection.Horizontal) {
this.hLines.push(line);
} else if (line.direction === LineDirection.Vertical) {
this.vLines.push(line);
}
}
public get isValid(): boolean {
return this.hLines.length + this.vLines.length > 4;
}
public get rowPivots(): Array<number> {
const rowSet: Set<number> = new Set();
for (const line of this.hLines) {
rowSet.add(line.from.y);
}
return [...rowSet].sort((a, b) => a - b);
}
public get colPivots(): Array<number> {
const colSet: Set<number> = new Set();
for (const line of this.vLines) {
colSet.add(line.from.x);
}
return [...colSet].sort((a, b) => a - b);
}
public add(line: Line): boolean {
const hasIntersection = this.intersection(line);
if (hasIntersection) {
if (line.direction === LineDirection.Horizontal) {
this.hLines.push(line);
return true;
} else if (line.direction === LineDirection.Vertical) {
this.vLines.push(line);
return true;
}
}
return false;
}
private intersection(line: Line): boolean {
let flag = false;
if (!line.valid) return flag;
if (line.direction === LineDirection.Horizontal) {
for (const vLine of this.vLines) {
const p = line.intersection(vLine);
if (p) {
flag = true;
}
}
} else if (line.direction === LineDirection.Vertical) {
for (const hLine of this.hLines) {
const p = line.intersection(hLine);
if (p) {
flag = true;
}
}
}
return flag;
}
private getSameHorizontal(line: Line): Array<Line> {
const same: Array<Line> = [line];
const other: Array<Line> = [];
while (this.hLines.length > 0) {
const hLine = this.hLines.shift();
if (!hLine) continue;
if (hLine.from.y === line.from.y) {
same.push(hLine);
} else {
other.push(hLine);
}
}
this.hLines = other;
return same;
}
private getSameVertical(line: Line): Array<Line> {
const same: Array<Line> = [line];
const other: Array<Line> = [];
while (this.vLines.length > 0) {
const vLine = this.vLines.shift();
if (!vLine) continue;
if (vLine.from.x === line.from.x) {
same.push(vLine);
} else {
other.push(vLine);
}
}
this.vLines = other;
return same;
}
private mergeHorizontalLines(lines: Array<Line>): Line {
lines.sort((l1, l2) => l1.from.x - l2.from.x);
const minX = lines[0].from.x;
const maxX = lines[lines.length - 1].to.x;
const resultLine = new Line(new Point(minX, lines[0].from.y), new Point(maxX, lines[0].from.y));
for (let i = 1; i < lines.length; i++) {
const prevLine = lines[i - 1];
const currLine = lines[i];
if (Math.abs(prevLine.to.x - currLine.from.x) > Shape.tolerance) {
const gapLine = new Line(new Point(prevLine.to.x, prevLine.from.y), new Point(currLine.from.x, currLine.from.y));
resultLine.addGap(gapLine);
}
}
return resultLine;
}
private mergeVerticalLines(lines: Array<Line>): Line {
lines.sort((l1, l2) => l1.from.y - l2.from.y);
const minY = lines[0].from.y;
const maxY = lines[lines.length - 1].to.y;
const resultLine = new Line(new Point(lines[0].from.x, minY), new Point(lines[0].from.x, maxY));
for (let i = 1; i < lines.length; i++) {
const prevLine = lines[i - 1];
const currLine = lines[i];
if (Math.abs(prevLine.to.y - currLine.from.y) > Shape.tolerance) {
const gapLine = new Line(new Point(prevLine.to.x, prevLine.to.y), new Point(prevLine.to.x, currLine.from.y));
resultLine.addGap(gapLine);
}
}
return resultLine;
}
public normalize(): void {
this.hLines = this.hLines.filter((l) => l.intersections.length > 1);
this.vLines = this.vLines.filter((l) => l.intersections.length > 1);
this.hLines.sort((l1, l2) => l1.from.y - l2.from.y);
this.vLines.sort((l1, l2) => l1.from.x - l2.from.x);
const newHLines: Array<Line> = [];
while (this.hLines.length > 0) {
const line = this.hLines.shift();
if (!line) continue;
const lines = this.getSameHorizontal(line);
const merged = this.mergeHorizontalLines(lines);
newHLines.push(merged);
}
this.hLines = newHLines;
const newVLines: Array<Line> = [];
while (this.vLines.length > 0) {
const line = this.vLines.shift();
if (!line) continue;
const lines = this.getSameVertical(line);
const merged = this.mergeVerticalLines(lines);
newVLines.push(merged);
}
this.vLines = newVLines;
}
public verticalExists(line: Line, y1: number, y2: number): boolean {
if (line.direction !== LineDirection.Vertical) {
throw new Error('Line is not vertical');
}
if (y1 >= y2) {
throw new Error('y1 must be less than y2');
}
if (line.from.y <= y1 && line.to.y >= y2) {
for (const gap of line.gaps) {
if (gap.from.y <= y1 && gap.to.y >= y2) {
return false;
}
}
return true;
}
return false;
}
public horizontalExists(line: Line, x1: number, x2: number): boolean {
if (line.direction !== LineDirection.Horizontal) {
throw new Error('Line is not horizontal');
}
if (x1 >= x2) {
throw new Error('x1 must be less than x2');
}
if (line.from.x <= x1 && line.to.x >= x2) {
for (const gap of line.gaps) {
if (gap.from.x <= x1 && gap.to.x >= x2) {
return false;
}
}
return true;
}
return false;
}
private findBottomLineIndex(h2Index: number, xMiddle: number): number {
for (let i = h2Index; i < this.hLines.length; i++) {
const hLine = this.hLines[i];
if (hLine.from.x <= xMiddle && hLine.to.x >= xMiddle) {
return i;
}
}
return -1;
}
private findVerticalLineIndexs(topHLine: Line, yMiddle: number): Array<number> {
const result: Array<number> = [];
for (let i = 0; i < this.vLines.length; i++) {
const vLine = this.vLines[i];
if (vLine.from.y <= yMiddle && vLine.to.y >= yMiddle && topHLine.intersection(vLine)) {
result.push(i);
}
}
return result;
}
private getRow(h1Index: number, h2Index: number, yMiddle: number): TableRow {
const tableRow: TableRow = [];
//const colCount = this.vLines.length -1
const topHLine = this.hLines[h1Index];
const vLineIndexes = this.findVerticalLineIndexs(topHLine, yMiddle);
for (let i = 1; i < vLineIndexes.length; i++) {
const leftVLine = this.vLines[vLineIndexes[i - 1]];
const rightVLine = this.vLines[vLineIndexes[i]];
const xMiddle = (leftVLine.from.x + rightVLine.from.x) / 2;
const bottomHLineIndex = this.findBottomLineIndex(h2Index, xMiddle);
const bottomHLine = this.hLines[bottomHLineIndex];
// minXY: {x:leftVLine.from.x,y:topHLine.from.y},
// maxXY: {x:rightVLine.from.x,y:bottomHLine.from.y},
const tableCell: TableCell = {
minXY: new Point(leftVLine.from.x, topHLine.from.y),
maxXY: new Point(rightVLine.from.x, bottomHLine.from.y),
width: rightVLine.from.x - leftVLine.from.x,
height: bottomHLine.from.y - topHLine.from.y,
text: [],
};
const colSpan = vLineIndexes[i] - vLineIndexes[i - 1];
const rowSpan = bottomHLineIndex - h1Index;
if (colSpan > 1) {
tableCell.colspan = colSpan;
}
if (rowSpan > 1) {
tableCell.rowspan = rowSpan;
}
tableRow.push(tableCell);
}
return tableRow;
}
public toData(): TableData {
const rowPivots = this.rowPivots;
const colPivots = this.colPivots;
const minXY = new Point(colPivots[0], rowPivots[0]);
const maxXY = new Point(colPivots[colPivots.length - 1], rowPivots[rowPivots.length - 1]);
const result: TableData = new TableData(minXY, maxXY, rowPivots, colPivots);
for (let h1 = 1; h1 < this.hLines.length; h1++) {
const prevHLine = this.hLines[h1 - 1];
const currHLine = this.hLines[h1];
const YMiddle = (prevHLine.from.y + currHLine.from.y) / 2;
const rowData = this.getRow(h1 - 1, h1, YMiddle);
result.rows.push(rowData);
}
return result;
}
}
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