96 lines
2.2 KiB
TypeScript
96 lines
2.2 KiB
TypeScript
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import { contourToSvgPath } from './contour';
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/**
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* 卡片切割路径
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*/
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export interface CardPath {
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pageIndex: number;
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cardIndex: number;
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points: [number, number][];
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centerX: number;
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centerY: number;
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pathD: string;
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startPoint: [number, number];
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endPoint: [number, number];
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}
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/**
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* 生成空走路径（抬刀移动路径）
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* @param cardPaths 卡片切割路径
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* @param a4Height A4 纸高度（用于坐标转换）
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*/
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export function generateTravelPaths(
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cardPaths: CardPath[],
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a4Height: number
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): [number, number][][] {
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const travelPaths: [number, number][][] = [];
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// 起点：左上角 (0, a4Height) - 注意 SVG 坐标 Y 向下，plotter 坐标 Y 向上
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const startPoint: [number, number] = [0, a4Height];
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if (cardPaths.length === 0) {
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return travelPaths;
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}
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// 从起点到第一张卡的起点
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travelPaths.push([startPoint, cardPaths[0].startPoint]);
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// 卡片之间的移动
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for (let i = 0; i < cardPaths.length - 1; i++) {
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const currentEnd = cardPaths[i].endPoint;
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const nextStart = cardPaths[i + 1].startPoint;
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travelPaths.push([currentEnd, nextStart]);
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}
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// 从最后一张卡返回起点
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travelPaths.push([cardPaths[cardPaths.length - 1].endPoint, startPoint]);
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return travelPaths;
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}
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/**
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* 将旅行路径转换为 SVG path 命令
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*/
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export function travelPathsToSvg(travelPaths: [number, number][][]): string {
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return travelPaths.map(path => contourToSvgPath(path, false)).join(' ');
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}
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/**
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* 计算所有卡片轮廓的总边界框
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*/
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export function calculateTotalBounds(cardPaths: CardPath[]): {
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minX: number;
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minY: number;
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maxX: number;
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maxY: number;
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width: number;
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height: number;
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} {
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if (cardPaths.length === 0) {
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return { minX: 0, minY: 0, maxX: 0, maxY: 0, width: 0, height: 0 };
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}
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let minX = Infinity;
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let minY = Infinity;
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let maxX = -Infinity;
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let maxY = -Infinity;
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for (const cardPath of cardPaths) {
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for (const [x, y] of cardPath.points) {
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minX = Math.min(minX, x);
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minY = Math.min(minY, y);
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maxX = Math.max(maxX, x);
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maxY = Math.max(maxY, y);
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}
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}
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return {
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minX,
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minY,
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maxX,
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maxY,
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width: maxX - minX,
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height: maxY - minY
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};
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}
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