This commit is contained in:
changjinpeng
2022-03-03 17:37:49 +08:00
parent ad2a47bb56
commit 15d15ae659
2 changed files with 224 additions and 198 deletions

View File

@@ -171,10 +171,10 @@
</template> </template>
<script> <script>
import {mapState} from 'vuex' import { mapState } from 'vuex'
export default { export default {
name: "serviceForm", name: 'serviceForm',
data() { data() {
return { return {
pageShow: false, pageShow: false,
@@ -497,34 +497,34 @@ export default {
if (this.isHasSignature && !this.signatureId) { if (this.isHasSignature && !this.signatureId) {
class Handwriting { class Handwriting {
// 内置数据 // 内置数据
ctx = ''; ctx = ''
canvasWidth = 300; canvasWidth = 300
canvasHeight = 900; canvasHeight = 900
linePrack = []; //划线轨迹 ; 生成线条的实际点 linePrack = [] //划线轨迹 ; 生成线条的实际点
currentLine = []; currentLine = []
transparent = 1; // 透明度 transparent = 1 // 透明度
pressure = 0.5; // 默认压力 pressure = 0.5 // 默认压力
smoothness = 100; //顺滑度用60的距离来计算速度 smoothness = 100 //顺滑度用60的距离来计算速度
lineSize = 1.5; // 笔记倍数 lineSize = 1.5 // 笔记倍数
lineMin = 0.5; // 最小笔画半径 lineMin = 0.5 // 最小笔画半径
lineMax = 2; // 最大笔画半径 lineMax = 2 // 最大笔画半径
currentPoint = {}; currentPoint = {}
firstTouch = true; // 第一次触发 firstTouch = true // 第一次触发
radius = 1; //画圆的半径 radius = 1 //画圆的半径
cutArea = { cutArea = {
top: 0, top: 0,
right: 0, right: 0,
bottom: 0, bottom: 0,
left: 0 left: 0,
}; //裁剪区域 } //裁剪区域
lastPoint = 0; lastPoint = 0
chirography = []; //笔迹 chirography = [] //笔迹
startY = 0; startY = 0
deltaY = 0; deltaY = 0
startValue = 0; startValue = 0
constructor(opts) { constructor(opts) {
console.log(opts); console.log(opts)
this.lineColor = opts.lineColor || '#1A1A1A' // 颜色 this.lineColor = opts.lineColor || '#1A1A1A' // 颜色
this.slideValue = opts.slideValue || 50 this.slideValue = opts.slideValue || 50
this.canvasName = opts.canvasName || 'handWriting' this.canvasName = opts.canvasName || 'handWriting'
@@ -533,125 +533,128 @@ export default {
init() { init() {
this.ctx = uni.createCanvasContext(this.canvasName) this.ctx = uni.createCanvasContext(this.canvasName)
var query = uni.createSelectorQuery(); var query = uni.createSelectorQuery()
query.select('.handCenter').boundingClientRect(rect => { query
console.log(rect) .select('.handCenter')
this.canvasWidth = rect.width; .boundingClientRect((rect) => {
this.canvasHeight = rect.height; console.log(rect)
}).exec(); this.canvasWidth = rect.width
this.selectSlideValue(this.slideValue); this.canvasHeight = rect.height
})
.exec()
this.selectSlideValue(this.slideValue)
} }
// 笔迹开始 // 笔迹开始
uploadScaleStart(event) { uploadScaleStart(event) {
console.log('start'); console.log('start')
let e = event.mp let e = event.mp
console.log(e.touches[0]) console.log(e.touches[0])
if (e.type != 'touchstart') return false; if (e.type != 'touchstart') return false
this.ctx.setFillStyle(this.lineColor); // 初始线条设置颜色 this.ctx.setFillStyle(this.lineColor) // 初始线条设置颜色
this.ctx.setGlobalAlpha(this.transparent); // 设置半透明 this.ctx.setGlobalAlpha(this.transparent) // 设置半透明
this.currentPoint = { this.currentPoint = {
x: e.touches[0].x, x: e.touches[0].x,
y: e.touches[0].y y: e.touches[0].y,
} }
this.currentLine.unshift({ this.currentLine.unshift({
time: new Date().getTime(), time: new Date().getTime(),
dis: 0, dis: 0,
x: this.currentPoint.x, x: this.currentPoint.x,
y: this.currentPoint.y y: this.currentPoint.y,
}) })
if (this.firstTouch) { if (this.firstTouch) {
this.cutArea = { this.cutArea = {
top: this.currentPoint.y, top: this.currentPoint.y,
right: this.currentPoint.x, right: this.currentPoint.x,
bottom: this.currentPoint.y, bottom: this.currentPoint.y,
left: this.currentPoint.x left: this.currentPoint.x,
} }
this.firstTouch = false this.firstTouch = false
} }
this.pointToLine(this.currentLine); this.pointToLine(this.currentLine)
} }
// 笔迹移动 // 笔迹移动
uploadScaleMove(event) { uploadScaleMove(event) {
console.log('move'); console.log('move')
let e = event.mp let e = event.mp
if (e.type != 'touchmove') return false; if (e.type != 'touchmove') return false
if (e.cancelable) { if (e.cancelable) {
// 判断默认行为是否已经被禁用 // 判断默认行为是否已经被禁用
if (!e.defaultPrevented) { if (!e.defaultPrevented) {
e.preventDefault(); e.preventDefault()
} }
} }
let point = { let point = {
x: e.touches[0].x, x: e.touches[0].x,
y: e.touches[0].y y: e.touches[0].y,
} }
//测试裁剪 //测试裁剪
if (point.y < this.cutArea.top) { if (point.y < this.cutArea.top) {
this.cutArea.top = point.y; this.cutArea.top = point.y
} }
if (point.y < 0) this.cutArea.top = 0; if (point.y < 0) this.cutArea.top = 0
if (point.x > this.cutArea.right) { if (point.x > this.cutArea.right) {
this.cutArea.right = point.x; this.cutArea.right = point.x
} }
if (this.canvasWidth - point.x <= 0) { if (this.canvasWidth - point.x <= 0) {
this.cutArea.right = this.canvasWidth; this.cutArea.right = this.canvasWidth
} }
if (point.y > this.cutArea.bottom) { if (point.y > this.cutArea.bottom) {
this.cutArea.bottom = point.y; this.cutArea.bottom = point.y
} }
if (this.canvasHeight - point.y <= 0) { if (this.canvasHeight - point.y <= 0) {
this.cutArea.bottom = this.canvasHeight; this.cutArea.bottom = this.canvasHeight
} }
if (point.x < this.cutArea.left) { if (point.x < this.cutArea.left) {
this.cutArea.left = point.x; this.cutArea.left = point.x
} }
if (point.x < 0) this.cutArea.left = 0; if (point.x < 0) this.cutArea.left = 0
this.lastPoint = this.currentPoint; this.lastPoint = this.currentPoint
this.currentPoint = point this.currentPoint = point
this.currentLine.unshift({ this.currentLine.unshift({
time: new Date().getTime(), time: new Date().getTime(),
dis: this.distance(this.currentPoint, this.lastPoint, 'move'), dis: this.distance(this.currentPoint, this.lastPoint, 'move'),
x: point.x, x: point.x,
y: point.y y: point.y,
}) })
this.pointToLine(this.currentLine); this.pointToLine(this.currentLine)
} }
// 笔迹结束 // 笔迹结束
uploadScaleEnd(event) { uploadScaleEnd(event) {
let e = event.mp let e = event.mp
if (e.type != 'touchend') return 0; if (e.type != 'touchend') return 0
console.log(e); console.log(e)
let point = { let point = {
x: e.changedTouches[0].x, x: e.changedTouches[0].x,
y: e.changedTouches[0].y y: e.changedTouches[0].y,
} }
this.lastPoint = this.currentPoint; this.lastPoint = this.currentPoint
this.currentPoint = point this.currentPoint = point
this.currentLine.unshift({ this.currentLine.unshift({
time: new Date().getTime(), time: new Date().getTime(),
dis: this.distance(this.currentPoint, this.lastPoint, 'end'), dis: this.distance(this.currentPoint, this.lastPoint, 'end'),
x: point.x, x: point.x,
y: point.y y: point.y,
}) })
if (this.currentLine.length > 2) { if (this.currentLine.length > 2) {
var info = (this.currentLine[0].time - this.currentLine[this.currentLine.length - 1].time) / this.currentLine.length; var info = (this.currentLine[0].time - this.currentLine[this.currentLine.length - 1].time) / this.currentLine.length
//$("#info").text(info.toFixed(2)); //$("#info").text(info.toFixed(2));
} }
//一笔结束,保存笔迹的坐标点,清空,当前笔迹 //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; //增加判断是否在手写区域;
this.pointToLine(this.currentLine); this.pointToLine(this.currentLine)
var currentChirography = { var currentChirography = {
lineSize: this.lineSize, lineSize: this.lineSize,
lineColor: this.lineColor lineColor: this.lineColor,
}; }
this.chirography.unshift(currentChirography); this.chirography.unshift(currentChirography)
this.linePrack.unshift(this.currentLine); this.linePrack.unshift(this.currentLine)
this.currentLine = [] this.currentLine = []
} }
@@ -662,224 +665,247 @@ export default {
//画两点之间的线条;参数为:line会绘制最近的开始的两个点 //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) { pointToLine(line) {
this.calcBethelLine(line); this.calcBethelLine(line)
// this.calcBethelLine1(line); // this.calcBethelLine1(line);
return; return
} }
//计算插值的方式; //计算插值的方式;
calcBethelLine(line) { calcBethelLine(line) {
if (line.length <= 1) { if (line.length <= 1) {
line[0].r = this.radius; line[0].r = this.radius
return; return
} }
let x0, x1, x2, y0, y1, y2, r0, r1, r2, len, lastRadius, dis = 0, let x0,
time = 0, x1,
curveValue = 0.5; x2,
y0,
y1,
y2,
r0,
r1,
r2,
len,
lastRadius,
dis = 0,
time = 0,
curveValue = 0.5
if (line.length <= 2) { if (line.length <= 2) {
x0 = line[1].x x0 = line[1].x
y0 = line[1].y y0 = line[1].y
x2 = line[1].x + (line[0].x - line[1].x) * curveValue; x2 = line[1].x + (line[0].x - line[1].x) * curveValue
y2 = line[1].y + (line[0].y - line[1].y) * curveValue; y2 = line[1].y + (line[0].y - line[1].y) * curveValue
//x2 = line[1].x; //x2 = line[1].x;
//y2 = line[1].y; //y2 = line[1].y;
x1 = x0 + (x2 - x0) * curveValue; x1 = x0 + (x2 - x0) * curveValue
y1 = y0 + (y2 - y0) * curveValue; y1 = y0 + (y2 - y0) * curveValue
;
} else { } else {
x0 = line[2].x + (line[1].x - line[2].x) * curveValue; x0 = line[2].x + (line[1].x - line[2].x) * curveValue
y0 = line[2].y + (line[1].y - line[2].y) * curveValue; y0 = line[2].y + (line[1].y - line[2].y) * curveValue
x1 = line[1].x; x1 = line[1].x
y1 = line[1].y; y1 = line[1].y
x2 = x1 + (line[0].x - x1) * curveValue; x2 = x1 + (line[0].x - x1) * curveValue
y2 = y1 + (line[0].y - y1) * 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 //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({ len = this.distance(
x: x2, {
y: y2 x: x2,
}, { y: y2,
x: x0, },
y: y0 {
}, 'calc'); x: x0,
lastRadius = this.radius; y: y0,
},
'calc'
)
lastRadius = this.radius
for (let n = 0; n < line.length - 1; n++) { for (let n = 0; n < line.length - 1; n++) {
dis += line[n].dis; dis += line[n].dis
time += line[n].time - line[n + 1].time; time += line[n].time - line[n + 1].time
if (dis > this.smoothness) break; if (dis > this.smoothness) break
} }
this.radius = Math.min(time / len * this.pressure + this.lineMin, this.lineMax) * this.lineSize this.radius = Math.min((time / len) * this.pressure + this.lineMin, this.lineMax) * this.lineSize
line[0].r = this.radius; line[0].r = this.radius
//计算笔迹半径; //计算笔迹半径;
if (line.length <= 2) { if (line.length <= 2) {
r0 = (lastRadius + this.radius) / 2; r0 = (lastRadius + this.radius) / 2
r1 = r0; r1 = r0
r2 = r1; r2 = r1
//return; //return;
} else { } else {
r0 = (line[2].r + line[1].r) / 2; r0 = (line[2].r + line[1].r) / 2
r1 = line[1].r; r1 = line[1].r
r2 = (line[1].r + line[0].r) / 2; r2 = (line[1].r + line[0].r) / 2
} }
let n = 5; let n = 5
let point = []; let point = []
for (let i = 0; i < n; i++) { for (let i = 0; i < n; i++) {
let t = i / (n - 1); let t = i / (n - 1)
let x = (1 - t) * (1 - t) * x0 + 2 * t * (1 - t) * x1 + t * t * x2; 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 y = (1 - t) * (1 - t) * y0 + 2 * t * (1 - t) * y1 + t * t * y2
let r = lastRadius + (this.radius - lastRadius) / n * i; let r = lastRadius + ((this.radius - lastRadius) / n) * i
point.push({ point.push({
x: x, x: x,
y: y, y: y,
r: r r: r,
}); })
if (point.length == 3) { 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); 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; a[0].color = this.lineColor
this.bethelDraw(a, 1); this.bethelDraw(a, 1)
point = [{ point = [
x: x, {
y: y, x: x,
r: r y: y,
}]; r: r,
},
]
} }
} }
} }
//求两点之间距离 //求两点之间距离
distance(a, b, type) { distance(a, b, type) {
let x = b.x - a.x; let x = b.x - a.x
let y = b.y - a.y; let y = b.y - a.y
return Math.sqrt(x * x + y * y) * 5; return Math.sqrt(x * x + y * y) * 5
} }
ctaCalc(x0, y0, r0, x1, y1, r1, x2, y2, r2) { ctaCalc(x0, y0, r0, x1, y1, r1, x2, y2, r2) {
let a = [], let a = [],
vx01, vy01, norm, n_x0, n_y0, vx21, vy21, n_x2, n_y2; vx01,
vx01 = x1 - x0; vy01,
vy01 = y1 - y0; norm,
norm = Math.sqrt(vx01 * vx01 + vy01 * vy01 + 0.0001) * 2; n_x0,
vx01 = vx01 / norm * r0; n_y0,
vy01 = vy01 / norm * r0; vx21,
n_x0 = vy01; vy21,
n_y0 = -vx01; n_x2,
vx21 = x1 - x2; n_y2
vy21 = y1 - y2; vx01 = x1 - x0
norm = Math.sqrt(vx21 * vx21 + vy21 * vy21 + 0.0001) * 2; vy01 = y1 - y0
vx21 = vx21 / norm * r2; norm = Math.sqrt(vx01 * vx01 + vy01 * vy01 + 0.0001) * 2
vy21 = vy21 / norm * r2; vx01 = (vx01 / norm) * r0
n_x2 = -vy21; vy01 = (vy01 / norm) * r0
n_y2 = vx21; 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({ a.push({
mx: x0 + n_x0, mx: x0 + n_x0,
my: y0 + n_y0, my: y0 + n_y0,
color: "#1A1A1A" color: '#1A1A1A',
}); })
a.push({ a.push({
c1x: x1 + n_x0, c1x: x1 + n_x0,
c1y: y1 + n_y0, c1y: y1 + n_y0,
c2x: x1 + n_x2, c2x: x1 + n_x2,
c2y: y1 + n_y2, c2y: y1 + n_y2,
ex: x2 + n_x2, ex: x2 + n_x2,
ey: y2 + n_y2 ey: y2 + n_y2,
}); })
a.push({ a.push({
c1x: x2 + n_x2 - vx21, c1x: x2 + n_x2 - vx21,
c1y: y2 + n_y2 - vy21, c1y: y2 + n_y2 - vy21,
c2x: x2 - n_x2 - vx21, c2x: x2 - n_x2 - vx21,
c2y: y2 - n_y2 - vy21, c2y: y2 - n_y2 - vy21,
ex: x2 - n_x2, ex: x2 - n_x2,
ey: y2 - n_y2 ey: y2 - n_y2,
}); })
a.push({ a.push({
c1x: x1 - n_x2, c1x: x1 - n_x2,
c1y: y1 - n_y2, c1y: y1 - n_y2,
c2x: x1 - n_x0, c2x: x1 - n_x0,
c2y: y1 - n_y0, c2y: y1 - n_y0,
ex: x0 - n_x0, ex: x0 - n_x0,
ey: y0 - n_y0 ey: y0 - n_y0,
}); })
a.push({ a.push({
c1x: x0 - n_x0 - vx01, c1x: x0 - n_x0 - vx01,
c1y: y0 - n_y0 - vy01, c1y: y0 - n_y0 - vy01,
c2x: x0 + n_x0 - vx01, c2x: x0 + n_x0 - vx01,
c2y: y0 + n_y0 - vy01, c2y: y0 + n_y0 - vy01,
ex: x0 + n_x0, ex: x0 + n_x0,
ey: y0 + n_y0 ey: y0 + n_y0,
}); })
a[0].mx = a[0].mx.toFixed(1); a[0].mx = a[0].mx.toFixed(1)
a[0].mx = parseFloat(a[0].mx); a[0].mx = parseFloat(a[0].mx)
a[0].my = a[0].my.toFixed(1); a[0].my = a[0].my.toFixed(1)
a[0].my = parseFloat(a[0].my); a[0].my = parseFloat(a[0].my)
for (let i = 1; i < a.length; i++) { for (let i = 1; i < a.length; i++) {
a[i].c1x = a[i].c1x.toFixed(1); a[i].c1x = a[i].c1x.toFixed(1)
a[i].c1x = parseFloat(a[i].c1x); a[i].c1x = parseFloat(a[i].c1x)
a[i].c1y = a[i].c1y.toFixed(1); a[i].c1y = a[i].c1y.toFixed(1)
a[i].c1y = parseFloat(a[i].c1y); a[i].c1y = parseFloat(a[i].c1y)
a[i].c2x = a[i].c2x.toFixed(1); a[i].c2x = a[i].c2x.toFixed(1)
a[i].c2x = parseFloat(a[i].c2x); a[i].c2x = parseFloat(a[i].c2x)
a[i].c2y = a[i].c2y.toFixed(1); a[i].c2y = a[i].c2y.toFixed(1)
a[i].c2y = parseFloat(a[i].c2y); a[i].c2y = parseFloat(a[i].c2y)
a[i].ex = a[i].ex.toFixed(1); a[i].ex = a[i].ex.toFixed(1)
a[i].ex = parseFloat(a[i].ex); a[i].ex = parseFloat(a[i].ex)
a[i].ey = a[i].ey.toFixed(1); a[i].ey = a[i].ey.toFixed(1)
a[i].ey = parseFloat(a[i].ey); a[i].ey = parseFloat(a[i].ey)
} }
return a; return a
} }
bethelDraw(point, is_fill, color) { bethelDraw(point, is_fill, color) {
this.ctx.beginPath(); this.ctx.beginPath()
this.ctx.moveTo(point[0].mx, point[0].my); this.ctx.moveTo(point[0].mx, point[0].my)
if (undefined != color) { if (undefined != color) {
this.ctx.setFillStyle(color); this.ctx.setFillStyle(color)
this.ctx.setStrokeStyle(color); this.ctx.setStrokeStyle(color)
} else { } else {
this.ctx.setFillStyle(point[0].color); this.ctx.setFillStyle(point[0].color)
this.ctx.setStrokeStyle(point[0].color); this.ctx.setStrokeStyle(point[0].color)
} }
for (let i = 1; i < point.length; i++) { 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.bezierCurveTo(point[i].c1x, point[i].c1y, point[i].c2x, point[i].c2y, point[i].ex, point[i].ey)
} }
this.ctx.stroke(); this.ctx.stroke()
if (undefined != is_fill) { 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.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) this.ctx.draw(true)
} }
selectColorEvent(lineColor) { selectColorEvent(lineColor) {
this.lineColor = lineColor; this.lineColor = lineColor
} }
selectSlideValue(slideValue) { selectSlideValue(slideValue) {
switch (slideValue) { switch (slideValue) {
case 0: case 0:
this.lineSize = 0.1; this.lineSize = 0.1
this.lineMin = 0.1; this.lineMin = 0.1
this.lineMax = 0.1; this.lineMax = 0.1
break; break
case 25: case 25:
this.lineSize = 1; this.lineSize = 1
this.lineMin = 0.5; this.lineMin = 0.5
this.lineMax = 2; this.lineMax = 2
break; break
case 50: case 50:
this.lineSize = 1.5; this.lineSize = 1.5
this.lineMin = 1; this.lineMin = 1
this.lineMax = 3; this.lineMax = 3
break; break
case 75: case 75:
this.lineSize = 1.5; this.lineSize = 1.5
this.lineMin = 2; this.lineMin = 2
this.lineMax = 3.5; this.lineMax = 3.5
break; break
case 100: case 100:
this.lineSize = 3; this.lineSize = 3
this.lineMin = 2; this.lineMin = 2
this.lineMax = 3.5; this.lineMax = 3.5
break; break
} }
} }
@@ -888,11 +914,11 @@ export default {
uni.canvasToTempFilePath({ uni.canvasToTempFilePath({
canvasId: this.canvasName, canvasId: this.canvasName,
success: function (res) { success: function (res) {
resolve(res.tempFilePath); resolve(res.tempFilePath)
}, },
fail: function (err) { fail: function (err) {
rej(err); rej(err)
} },
}) })
}) })
} }

View File

@@ -16,7 +16,7 @@ const configs = {
dev: { dev: {
areaId: '341021104000', areaId: '341021104000',
areaName: '郑村镇', areaName: '郑村镇',
baseUrl: 'http://192.168.1.87:9000' baseUrl: 'http://192.168.1.105:9000'
} }
} }
// 当前选中配置 // 当前选中配置