修复网上办事
This commit is contained in:
@@ -1,394 +0,0 @@
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class Handwriting {
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// 内置数据
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ctx = '';
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canvasWidth = 300;
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canvasHeight = 900;
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linePrack = []; //划线轨迹 ; 生成线条的实际点
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currentLine = [];
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transparent = 1; // 透明度
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pressure = 0.5; // 默认压力
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smoothness = 100; //顺滑度,用60的距离来计算速度
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lineSize = 1.5; // 笔记倍数
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lineMin = 0.5; // 最小笔画半径
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lineMax = 2; // 最大笔画半径
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currentPoint = {};
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firstTouch = true; // 第一次触发
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radius = 1; //画圆的半径
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cutArea = {
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top: 0,
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right: 0,
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bottom: 0,
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left: 0
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}; //裁剪区域
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lastPoint = 0;
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chirography = []; //笔迹
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startY = 0;
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deltaY = 0;
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startValue = 0;
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constructor(opts) {
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console.log(opts);
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this.lineColor = opts.lineColor || '#1A1A1A' // 颜色
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this.slideValue = opts.slideValue || 50
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this.canvasName = opts.canvasName || 'handWriting'
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this.init()
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}
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init() {
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this.ctx = uni.createCanvasContext(this.canvasName)
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var query = uni.createSelectorQuery();
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query.select('.handCenter').boundingClientRect(rect => {
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console.log(rect)
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this.canvasWidth = rect.width;
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this.canvasHeight = rect.height;
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}).exec();
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this.selectSlideValue(this.slideValue);
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}
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// 笔迹开始
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uploadScaleStart(event) {
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console.log('start');
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let e = event.mp
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console.log(e.touches[0])
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if (e.type != 'touchstart') return false;
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this.ctx.setFillStyle(this.lineColor); // 初始线条设置颜色
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this.ctx.setGlobalAlpha(this.transparent); // 设置半透明
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this.currentPoint = {
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x: e.touches[0].x,
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y: e.touches[0].y
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}
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this.currentLine.unshift({
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time: new Date().getTime(),
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dis: 0,
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x: this.currentPoint.x,
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y: this.currentPoint.y
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})
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if (this.firstTouch) {
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this.cutArea = {
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top: this.currentPoint.y,
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right: this.currentPoint.x,
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bottom: this.currentPoint.y,
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left: this.currentPoint.x
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}
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this.firstTouch = false
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}
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this.pointToLine(this.currentLine);
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}
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// 笔迹移动
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uploadScaleMove(event) {
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console.log('move');
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let e = event.mp
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if (e.type != 'touchmove') return false;
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if (e.cancelable) {
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// 判断默认行为是否已经被禁用
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if (!e.defaultPrevented) {
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e.preventDefault();
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}
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}
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let point = {
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x: e.touches[0].x,
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y: e.touches[0].y
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}
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//测试裁剪
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if (point.y < this.cutArea.top) {
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this.cutArea.top = point.y;
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}
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if (point.y < 0) this.cutArea.top = 0;
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if (point.x > this.cutArea.right) {
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this.cutArea.right = point.x;
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}
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if (this.canvasWidth - point.x <= 0) {
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this.cutArea.right = this.canvasWidth;
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}
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if (point.y > this.cutArea.bottom) {
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this.cutArea.bottom = point.y;
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}
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if (this.canvasHeight - point.y <= 0) {
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this.cutArea.bottom = this.canvasHeight;
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}
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if (point.x < this.cutArea.left) {
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this.cutArea.left = point.x;
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}
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if (point.x < 0) this.cutArea.left = 0;
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this.lastPoint = this.currentPoint;
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this.currentPoint = point
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this.currentLine.unshift({
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time: new Date().getTime(),
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dis: this.distance(this.currentPoint, this.lastPoint, 'move'),
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x: point.x,
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y: point.y
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})
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this.pointToLine(this.currentLine);
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}
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// 笔迹结束
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uploadScaleEnd(event) {
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let e = event.mp
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if (e.type != 'touchend') return 0;
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console.log(e);
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let point = {
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x: e.changedTouches[0].x,
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y: e.changedTouches[0].y
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}
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this.lastPoint = this.currentPoint;
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this.currentPoint = point
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this.currentLine.unshift({
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time: new Date().getTime(),
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dis: this.distance(this.currentPoint, this.lastPoint, 'end'),
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x: point.x,
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y: point.y
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})
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if (this.currentLine.length > 2) {
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var info = (this.currentLine[0].time - this.currentLine[this.currentLine.length - 1].time) / this.currentLine.length;
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//$("#info").text(info.toFixed(2));
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}
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//一笔结束,保存笔迹的坐标点,清空,当前笔迹
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//增加判断是否在手写区域;
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this.pointToLine(this.currentLine);
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var currentChirography = {
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lineSize: this.lineSize,
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lineColor: this.lineColor
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};
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this.chirography.unshift(currentChirography);
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this.linePrack.unshift(this.currentLine);
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this.currentLine = []
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}
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retDraw() {
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this.ctx.clearRect(0, 0, 700, 730)
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this.ctx.draw()
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}
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//画两点之间的线条;参数为:line,会绘制最近的开始的两个点;
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pointToLine(line) {
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this.calcBethelLine(line);
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// this.calcBethelLine1(line);
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return;
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}
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//计算插值的方式;
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calcBethelLine(line) {
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if (line.length <= 1) {
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line[0].r = this.radius;
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return;
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}
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let x0, x1, x2, y0, y1, y2, r0, r1, r2, len, lastRadius, dis = 0,
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time = 0,
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curveValue = 0.5;
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if (line.length <= 2) {
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x0 = line[1].x
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y0 = line[1].y
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x2 = line[1].x + (line[0].x - line[1].x) * curveValue;
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y2 = line[1].y + (line[0].y - line[1].y) * curveValue;
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//x2 = line[1].x;
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//y2 = line[1].y;
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x1 = x0 + (x2 - x0) * curveValue;
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y1 = y0 + (y2 - y0) * curveValue;;
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} else {
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x0 = line[2].x + (line[1].x - line[2].x) * curveValue;
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y0 = line[2].y + (line[1].y - line[2].y) * curveValue;
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x1 = line[1].x;
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y1 = line[1].y;
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x2 = x1 + (line[0].x - x1) * curveValue;
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y2 = y1 + (line[0].y - y1) * curveValue;
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}
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//从计算公式看,三个点分别是(x0,y0),(x1,y1),(x2,y2) ;(x1,y1)这个是控制点,控制点不会落在曲线上;实际上,这个点还会手写获取的实际点,却落在曲线上
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len = this.distance({
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x: x2,
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y: y2
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}, {
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x: x0,
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y: y0
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}, 'calc');
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lastRadius = this.radius;
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for (let n = 0; n < line.length - 1; n++) {
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dis += line[n].dis;
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time += line[n].time - line[n + 1].time;
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if (dis > this.smoothness) break;
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}
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this.radius = Math.min(time / len * this.pressure + this.lineMin, this.lineMax) * this.lineSize
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line[0].r = this.radius;
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//计算笔迹半径;
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if (line.length <= 2) {
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r0 = (lastRadius + this.radius) / 2;
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r1 = r0;
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r2 = r1;
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//return;
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} else {
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r0 = (line[2].r + line[1].r) / 2;
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r1 = line[1].r;
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r2 = (line[1].r + line[0].r) / 2;
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}
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let n = 5;
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let point = [];
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for (let i = 0; i < n; i++) {
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let t = i / (n - 1);
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let x = (1 - t) * (1 - t) * x0 + 2 * t * (1 - t) * x1 + t * t * x2;
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let y = (1 - t) * (1 - t) * y0 + 2 * t * (1 - t) * y1 + t * t * y2;
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let r = lastRadius + (this.radius - lastRadius) / n * i;
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point.push({
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x: x,
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y: y,
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r: r
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});
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if (point.length == 3) {
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let a = this.ctaCalc(point[0].x, point[0].y, point[0].r, point[1].x, point[1].y, point[1].r, point[2].x, point[2].y, point[2].r);
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a[0].color = this.lineColor;
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this.bethelDraw(a, 1);
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point = [{
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x: x,
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y: y,
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r: r
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}];
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}
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}
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}
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//求两点之间距离
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distance(a, b, type) {
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let x = b.x - a.x;
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let y = b.y - a.y;
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return Math.sqrt(x * x + y * y) * 5;
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}
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ctaCalc(x0, y0, r0, x1, y1, r1, x2, y2, r2) {
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let a = [],
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vx01, vy01, norm, n_x0, n_y0, vx21, vy21, n_x2, n_y2;
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vx01 = x1 - x0;
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vy01 = y1 - y0;
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norm = Math.sqrt(vx01 * vx01 + vy01 * vy01 + 0.0001) * 2;
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vx01 = vx01 / norm * r0;
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vy01 = vy01 / norm * r0;
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n_x0 = vy01;
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n_y0 = -vx01;
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vx21 = x1 - x2;
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vy21 = y1 - y2;
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norm = Math.sqrt(vx21 * vx21 + vy21 * vy21 + 0.0001) * 2;
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vx21 = vx21 / norm * r2;
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vy21 = vy21 / norm * r2;
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n_x2 = -vy21;
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n_y2 = vx21;
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a.push({
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mx: x0 + n_x0,
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my: y0 + n_y0,
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color: "#1A1A1A"
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});
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a.push({
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c1x: x1 + n_x0,
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c1y: y1 + n_y0,
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c2x: x1 + n_x2,
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c2y: y1 + n_y2,
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ex: x2 + n_x2,
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ey: y2 + n_y2
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});
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a.push({
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c1x: x2 + n_x2 - vx21,
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c1y: y2 + n_y2 - vy21,
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c2x: x2 - n_x2 - vx21,
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c2y: y2 - n_y2 - vy21,
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ex: x2 - n_x2,
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ey: y2 - n_y2
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});
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a.push({
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c1x: x1 - n_x2,
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c1y: y1 - n_y2,
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c2x: x1 - n_x0,
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c2y: y1 - n_y0,
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ex: x0 - n_x0,
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ey: y0 - n_y0
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});
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a.push({
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c1x: x0 - n_x0 - vx01,
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c1y: y0 - n_y0 - vy01,
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c2x: x0 + n_x0 - vx01,
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c2y: y0 + n_y0 - vy01,
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ex: x0 + n_x0,
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ey: y0 + n_y0
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});
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a[0].mx = a[0].mx.toFixed(1);
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a[0].mx = parseFloat(a[0].mx);
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a[0].my = a[0].my.toFixed(1);
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a[0].my = parseFloat(a[0].my);
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for (let i = 1; i < a.length; i++) {
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a[i].c1x = a[i].c1x.toFixed(1);
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a[i].c1x = parseFloat(a[i].c1x);
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a[i].c1y = a[i].c1y.toFixed(1);
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a[i].c1y = parseFloat(a[i].c1y);
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a[i].c2x = a[i].c2x.toFixed(1);
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a[i].c2x = parseFloat(a[i].c2x);
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a[i].c2y = a[i].c2y.toFixed(1);
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a[i].c2y = parseFloat(a[i].c2y);
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a[i].ex = a[i].ex.toFixed(1);
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a[i].ex = parseFloat(a[i].ex);
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a[i].ey = a[i].ey.toFixed(1);
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a[i].ey = parseFloat(a[i].ey);
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}
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return a;
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}
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bethelDraw(point, is_fill, color) {
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this.ctx.beginPath();
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this.ctx.moveTo(point[0].mx, point[0].my);
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if (undefined != color) {
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this.ctx.setFillStyle(color);
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this.ctx.setStrokeStyle(color);
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} else {
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this.ctx.setFillStyle(point[0].color);
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this.ctx.setStrokeStyle(point[0].color);
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}
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for (let i = 1; i < point.length; i++) {
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this.ctx.bezierCurveTo(point[i].c1x, point[i].c1y, point[i].c2x, point[i].c2y, point[i].ex, point[i].ey);
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}
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this.ctx.stroke();
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if (undefined != is_fill) {
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this.ctx.fill(); //填充图形 ( 后绘制的图形会覆盖前面的图形, 绘制时注意先后顺序 )
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}
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this.ctx.draw(true)
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}
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selectColorEvent(lineColor) {
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this.lineColor = lineColor;
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}
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selectSlideValue(slideValue) {
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switch (slideValue) {
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case 0:
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this.lineSize = 0.1;
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this.lineMin = 0.1;
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this.lineMax = 0.1;
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break;
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case 25:
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this.lineSize = 1;
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this.lineMin = 0.5;
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this.lineMax = 2;
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break;
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case 50:
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this.lineSize = 1.5;
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this.lineMin = 1;
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this.lineMax = 3;
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break;
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case 75:
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this.lineSize = 1.5;
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this.lineMin = 2;
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this.lineMax = 3.5;
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break;
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case 100:
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this.lineSize = 3;
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this.lineMin = 2;
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this.lineMax = 3.5;
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break;
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}
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}
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saveCanvas(){
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return new Promise((resolve,rej) => {
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uni.canvasToTempFilePath({
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canvasId: this.canvasName,
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success: function(res) {
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resolve(res.tempFilePath);
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},
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fail:function(err){
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rej(err);
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}
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})
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})
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}
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}
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export default Handwriting;
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@@ -165,7 +165,6 @@
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<script>
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import {mapState} from 'vuex'
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import Handwriting from 'dvcp-wui/utils/signature'
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export default {
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name: "serviceForm",
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@@ -439,6 +438,409 @@ export default {
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}
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if (this.isHasSignature && !this.signatureId) {
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class Handwriting {
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// 内置数据
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ctx = '';
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canvasWidth = 300;
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canvasHeight = 900;
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linePrack = []; //划线轨迹 ; 生成线条的实际点
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||||
currentLine = [];
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transparent = 1; // 透明度
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pressure = 0.5; // 默认压力
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smoothness = 100; //顺滑度,用60的距离来计算速度
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lineSize = 1.5; // 笔记倍数
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lineMin = 0.5; // 最小笔画半径
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lineMax = 2; // 最大笔画半径
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currentPoint = {};
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firstTouch = true; // 第一次触发
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radius = 1; //画圆的半径
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cutArea = {
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||||
top: 0,
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right: 0,
|
||||
bottom: 0,
|
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left: 0
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||||
}; //裁剪区域
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||||
lastPoint = 0;
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chirography = []; //笔迹
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||||
startY = 0;
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||||
deltaY = 0;
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||||
startValue = 0;
|
||||
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||||
constructor(opts) {
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||||
console.log(opts);
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||||
this.lineColor = opts.lineColor || '#1A1A1A' // 颜色
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||||
this.slideValue = opts.slideValue || 50
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||||
this.canvasName = opts.canvasName || 'handWriting'
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this.init()
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||||
}
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||||
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init() {
|
||||
this.ctx = uni.createCanvasContext(this.canvasName)
|
||||
var query = uni.createSelectorQuery();
|
||||
query.select('.handCenter').boundingClientRect(rect => {
|
||||
console.log(rect)
|
||||
this.canvasWidth = rect.width;
|
||||
this.canvasHeight = rect.height;
|
||||
}).exec();
|
||||
this.selectSlideValue(this.slideValue);
|
||||
}
|
||||
|
||||
// 笔迹开始
|
||||
uploadScaleStart(event) {
|
||||
console.log('start');
|
||||
let e = event.mp
|
||||
console.log(e.touches[0])
|
||||
if (e.type != 'touchstart') return false;
|
||||
this.ctx.setFillStyle(this.lineColor); // 初始线条设置颜色
|
||||
this.ctx.setGlobalAlpha(this.transparent); // 设置半透明
|
||||
this.currentPoint = {
|
||||
x: e.touches[0].x,
|
||||
y: e.touches[0].y
|
||||
}
|
||||
this.currentLine.unshift({
|
||||
time: new Date().getTime(),
|
||||
dis: 0,
|
||||
x: this.currentPoint.x,
|
||||
y: this.currentPoint.y
|
||||
})
|
||||
if (this.firstTouch) {
|
||||
this.cutArea = {
|
||||
top: this.currentPoint.y,
|
||||
right: this.currentPoint.x,
|
||||
bottom: this.currentPoint.y,
|
||||
left: this.currentPoint.x
|
||||
}
|
||||
this.firstTouch = false
|
||||
}
|
||||
this.pointToLine(this.currentLine);
|
||||
}
|
||||
|
||||
// 笔迹移动
|
||||
uploadScaleMove(event) {
|
||||
console.log('move');
|
||||
let e = event.mp
|
||||
if (e.type != 'touchmove') return false;
|
||||
if (e.cancelable) {
|
||||
// 判断默认行为是否已经被禁用
|
||||
if (!e.defaultPrevented) {
|
||||
e.preventDefault();
|
||||
}
|
||||
}
|
||||
let point = {
|
||||
x: e.touches[0].x,
|
||||
y: e.touches[0].y
|
||||
}
|
||||
//测试裁剪
|
||||
if (point.y < this.cutArea.top) {
|
||||
this.cutArea.top = point.y;
|
||||
}
|
||||
if (point.y < 0) this.cutArea.top = 0;
|
||||
|
||||
if (point.x > this.cutArea.right) {
|
||||
this.cutArea.right = point.x;
|
||||
}
|
||||
if (this.canvasWidth - point.x <= 0) {
|
||||
this.cutArea.right = this.canvasWidth;
|
||||
}
|
||||
if (point.y > this.cutArea.bottom) {
|
||||
this.cutArea.bottom = point.y;
|
||||
}
|
||||
if (this.canvasHeight - point.y <= 0) {
|
||||
this.cutArea.bottom = this.canvasHeight;
|
||||
}
|
||||
if (point.x < this.cutArea.left) {
|
||||
this.cutArea.left = point.x;
|
||||
}
|
||||
if (point.x < 0) this.cutArea.left = 0;
|
||||
|
||||
this.lastPoint = this.currentPoint;
|
||||
this.currentPoint = point
|
||||
this.currentLine.unshift({
|
||||
time: new Date().getTime(),
|
||||
dis: this.distance(this.currentPoint, this.lastPoint, 'move'),
|
||||
x: point.x,
|
||||
y: point.y
|
||||
})
|
||||
this.pointToLine(this.currentLine);
|
||||
}
|
||||
|
||||
// 笔迹结束
|
||||
uploadScaleEnd(event) {
|
||||
let e = event.mp
|
||||
if (e.type != 'touchend') return 0;
|
||||
console.log(e);
|
||||
let point = {
|
||||
x: e.changedTouches[0].x,
|
||||
y: e.changedTouches[0].y
|
||||
}
|
||||
|
||||
this.lastPoint = this.currentPoint;
|
||||
this.currentPoint = point
|
||||
this.currentLine.unshift({
|
||||
time: new Date().getTime(),
|
||||
dis: this.distance(this.currentPoint, this.lastPoint, 'end'),
|
||||
x: point.x,
|
||||
y: point.y
|
||||
})
|
||||
if (this.currentLine.length > 2) {
|
||||
var info = (this.currentLine[0].time - this.currentLine[this.currentLine.length - 1].time) / this.currentLine.length;
|
||||
//$("#info").text(info.toFixed(2));
|
||||
}
|
||||
//一笔结束,保存笔迹的坐标点,清空,当前笔迹
|
||||
//增加判断是否在手写区域;
|
||||
this.pointToLine(this.currentLine);
|
||||
var currentChirography = {
|
||||
lineSize: this.lineSize,
|
||||
lineColor: this.lineColor
|
||||
};
|
||||
this.chirography.unshift(currentChirography);
|
||||
this.linePrack.unshift(this.currentLine);
|
||||
this.currentLine = []
|
||||
}
|
||||
|
||||
retDraw() {
|
||||
this.ctx.clearRect(0, 0, 700, 730)
|
||||
this.ctx.draw()
|
||||
}
|
||||
|
||||
//画两点之间的线条;参数为:line,会绘制最近的开始的两个点;
|
||||
pointToLine(line) {
|
||||
this.calcBethelLine(line);
|
||||
// this.calcBethelLine1(line);
|
||||
return;
|
||||
}
|
||||
|
||||
//计算插值的方式;
|
||||
calcBethelLine(line) {
|
||||
if (line.length <= 1) {
|
||||
line[0].r = this.radius;
|
||||
return;
|
||||
}
|
||||
let x0, x1, x2, y0, y1, y2, r0, r1, r2, len, lastRadius, dis = 0,
|
||||
time = 0,
|
||||
curveValue = 0.5;
|
||||
if (line.length <= 2) {
|
||||
x0 = line[1].x
|
||||
y0 = line[1].y
|
||||
x2 = line[1].x + (line[0].x - line[1].x) * curveValue;
|
||||
y2 = line[1].y + (line[0].y - line[1].y) * curveValue;
|
||||
//x2 = line[1].x;
|
||||
//y2 = line[1].y;
|
||||
x1 = x0 + (x2 - x0) * curveValue;
|
||||
y1 = y0 + (y2 - y0) * curveValue;
|
||||
;
|
||||
|
||||
} else {
|
||||
x0 = line[2].x + (line[1].x - line[2].x) * curveValue;
|
||||
y0 = line[2].y + (line[1].y - line[2].y) * curveValue;
|
||||
x1 = line[1].x;
|
||||
y1 = line[1].y;
|
||||
x2 = x1 + (line[0].x - x1) * curveValue;
|
||||
y2 = y1 + (line[0].y - y1) * curveValue;
|
||||
}
|
||||
//从计算公式看,三个点分别是(x0,y0),(x1,y1),(x2,y2) ;(x1,y1)这个是控制点,控制点不会落在曲线上;实际上,这个点还会手写获取的实际点,却落在曲线上
|
||||
len = this.distance({
|
||||
x: x2,
|
||||
y: y2
|
||||
}, {
|
||||
x: x0,
|
||||
y: y0
|
||||
}, 'calc');
|
||||
lastRadius = this.radius;
|
||||
for (let n = 0; n < line.length - 1; n++) {
|
||||
dis += line[n].dis;
|
||||
time += line[n].time - line[n + 1].time;
|
||||
if (dis > this.smoothness) break;
|
||||
}
|
||||
this.radius = Math.min(time / len * this.pressure + this.lineMin, this.lineMax) * this.lineSize
|
||||
line[0].r = this.radius;
|
||||
//计算笔迹半径;
|
||||
if (line.length <= 2) {
|
||||
r0 = (lastRadius + this.radius) / 2;
|
||||
r1 = r0;
|
||||
r2 = r1;
|
||||
//return;
|
||||
} else {
|
||||
r0 = (line[2].r + line[1].r) / 2;
|
||||
r1 = line[1].r;
|
||||
r2 = (line[1].r + line[0].r) / 2;
|
||||
}
|
||||
let n = 5;
|
||||
let point = [];
|
||||
for (let i = 0; i < n; i++) {
|
||||
let t = i / (n - 1);
|
||||
let x = (1 - t) * (1 - t) * x0 + 2 * t * (1 - t) * x1 + t * t * x2;
|
||||
let y = (1 - t) * (1 - t) * y0 + 2 * t * (1 - t) * y1 + t * t * y2;
|
||||
let r = lastRadius + (this.radius - lastRadius) / n * i;
|
||||
point.push({
|
||||
x: x,
|
||||
y: y,
|
||||
r: r
|
||||
});
|
||||
if (point.length == 3) {
|
||||
let a = this.ctaCalc(point[0].x, point[0].y, point[0].r, point[1].x, point[1].y, point[1].r, point[2].x, point[2].y, point[2].r);
|
||||
a[0].color = this.lineColor;
|
||||
this.bethelDraw(a, 1);
|
||||
point = [{
|
||||
x: x,
|
||||
y: y,
|
||||
r: r
|
||||
}];
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
//求两点之间距离
|
||||
distance(a, b, type) {
|
||||
let x = b.x - a.x;
|
||||
let y = b.y - a.y;
|
||||
return Math.sqrt(x * x + y * y) * 5;
|
||||
}
|
||||
|
||||
ctaCalc(x0, y0, r0, x1, y1, r1, x2, y2, r2) {
|
||||
let a = [],
|
||||
vx01, vy01, norm, n_x0, n_y0, vx21, vy21, n_x2, n_y2;
|
||||
vx01 = x1 - x0;
|
||||
vy01 = y1 - y0;
|
||||
norm = Math.sqrt(vx01 * vx01 + vy01 * vy01 + 0.0001) * 2;
|
||||
vx01 = vx01 / norm * r0;
|
||||
vy01 = vy01 / norm * r0;
|
||||
n_x0 = vy01;
|
||||
n_y0 = -vx01;
|
||||
vx21 = x1 - x2;
|
||||
vy21 = y1 - y2;
|
||||
norm = Math.sqrt(vx21 * vx21 + vy21 * vy21 + 0.0001) * 2;
|
||||
vx21 = vx21 / norm * r2;
|
||||
vy21 = vy21 / norm * r2;
|
||||
n_x2 = -vy21;
|
||||
n_y2 = vx21;
|
||||
a.push({
|
||||
mx: x0 + n_x0,
|
||||
my: y0 + n_y0,
|
||||
color: "#1A1A1A"
|
||||
});
|
||||
a.push({
|
||||
c1x: x1 + n_x0,
|
||||
c1y: y1 + n_y0,
|
||||
c2x: x1 + n_x2,
|
||||
c2y: y1 + n_y2,
|
||||
ex: x2 + n_x2,
|
||||
ey: y2 + n_y2
|
||||
});
|
||||
a.push({
|
||||
c1x: x2 + n_x2 - vx21,
|
||||
c1y: y2 + n_y2 - vy21,
|
||||
c2x: x2 - n_x2 - vx21,
|
||||
c2y: y2 - n_y2 - vy21,
|
||||
ex: x2 - n_x2,
|
||||
ey: y2 - n_y2
|
||||
});
|
||||
a.push({
|
||||
c1x: x1 - n_x2,
|
||||
c1y: y1 - n_y2,
|
||||
c2x: x1 - n_x0,
|
||||
c2y: y1 - n_y0,
|
||||
ex: x0 - n_x0,
|
||||
ey: y0 - n_y0
|
||||
});
|
||||
a.push({
|
||||
c1x: x0 - n_x0 - vx01,
|
||||
c1y: y0 - n_y0 - vy01,
|
||||
c2x: x0 + n_x0 - vx01,
|
||||
c2y: y0 + n_y0 - vy01,
|
||||
ex: x0 + n_x0,
|
||||
ey: y0 + n_y0
|
||||
});
|
||||
a[0].mx = a[0].mx.toFixed(1);
|
||||
a[0].mx = parseFloat(a[0].mx);
|
||||
a[0].my = a[0].my.toFixed(1);
|
||||
a[0].my = parseFloat(a[0].my);
|
||||
for (let i = 1; i < a.length; i++) {
|
||||
a[i].c1x = a[i].c1x.toFixed(1);
|
||||
a[i].c1x = parseFloat(a[i].c1x);
|
||||
a[i].c1y = a[i].c1y.toFixed(1);
|
||||
a[i].c1y = parseFloat(a[i].c1y);
|
||||
a[i].c2x = a[i].c2x.toFixed(1);
|
||||
a[i].c2x = parseFloat(a[i].c2x);
|
||||
a[i].c2y = a[i].c2y.toFixed(1);
|
||||
a[i].c2y = parseFloat(a[i].c2y);
|
||||
a[i].ex = a[i].ex.toFixed(1);
|
||||
a[i].ex = parseFloat(a[i].ex);
|
||||
a[i].ey = a[i].ey.toFixed(1);
|
||||
a[i].ey = parseFloat(a[i].ey);
|
||||
}
|
||||
return a;
|
||||
}
|
||||
|
||||
bethelDraw(point, is_fill, color) {
|
||||
this.ctx.beginPath();
|
||||
this.ctx.moveTo(point[0].mx, point[0].my);
|
||||
if (undefined != color) {
|
||||
this.ctx.setFillStyle(color);
|
||||
this.ctx.setStrokeStyle(color);
|
||||
} else {
|
||||
this.ctx.setFillStyle(point[0].color);
|
||||
this.ctx.setStrokeStyle(point[0].color);
|
||||
}
|
||||
for (let i = 1; i < point.length; i++) {
|
||||
this.ctx.bezierCurveTo(point[i].c1x, point[i].c1y, point[i].c2x, point[i].c2y, point[i].ex, point[i].ey);
|
||||
}
|
||||
this.ctx.stroke();
|
||||
if (undefined != is_fill) {
|
||||
this.ctx.fill(); //填充图形 ( 后绘制的图形会覆盖前面的图形, 绘制时注意先后顺序 )
|
||||
}
|
||||
this.ctx.draw(true)
|
||||
}
|
||||
|
||||
selectColorEvent(lineColor) {
|
||||
this.lineColor = lineColor;
|
||||
}
|
||||
|
||||
selectSlideValue(slideValue) {
|
||||
switch (slideValue) {
|
||||
case 0:
|
||||
this.lineSize = 0.1;
|
||||
this.lineMin = 0.1;
|
||||
this.lineMax = 0.1;
|
||||
break;
|
||||
case 25:
|
||||
this.lineSize = 1;
|
||||
this.lineMin = 0.5;
|
||||
this.lineMax = 2;
|
||||
break;
|
||||
case 50:
|
||||
this.lineSize = 1.5;
|
||||
this.lineMin = 1;
|
||||
this.lineMax = 3;
|
||||
break;
|
||||
case 75:
|
||||
this.lineSize = 1.5;
|
||||
this.lineMin = 2;
|
||||
this.lineMax = 3.5;
|
||||
break;
|
||||
case 100:
|
||||
this.lineSize = 3;
|
||||
this.lineMin = 2;
|
||||
this.lineMax = 3.5;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
saveCanvas() {
|
||||
return new Promise((resolve, rej) => {
|
||||
uni.canvasToTempFilePath({
|
||||
canvasId: this.canvasName,
|
||||
success: function (res) {
|
||||
resolve(res.tempFilePath);
|
||||
},
|
||||
fail: function (err) {
|
||||
rej(err);
|
||||
}
|
||||
})
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
this.handwriting = new Handwriting({
|
||||
lineColor: this.lineColor,
|
||||
slideValue: this.slideValue,
|
||||
|
||||
Reference in New Issue
Block a user