展示地址 http://jstopo.top
let state = {
qpaoTime: 0,
waterLen: 0,
countNum: 0,
timeR: 0
};
const starCanvas = document.getElementById('myCanvas');
const drawLineFunc = (ctx, objs)=>{//绘制线路
objs.forEach(item=>{
ctx.save();
ctx.beginPath();
ctx.strokeStyle = item.color;
ctx.lineWidth = item.isDash ? 5:item.lineWidth;
ctx.lineCap = item.lineCap;
// item.isDash ? ctx.setLineDash(item.lineDash||[]):ctx.setLineDash([]);
item.lines.forEach((line,indx)=>{
if(!item.isDash){
if(line.isMoveTo) ctx.moveTo(line.x,line.y);
else ctx.lineTo(line.x,line.y);
}else if(item.isDash && !line.isMoveTo){
if( line.y == item.lines[indx-1].y){//不能是第一个点
if(line.x > item.lines[indx-1].x){//管道x向右
let c = state.countNum, total_c = line.x - item.lines[indx-1].x;
while(c <= total_c-4){
let ax = item.lines[indx-1].x+c;
ctx.moveTo(ax,line.y);
let ax2 = item.lines[indx-1].x+c+8;
ctx.lineTo(ax2, line.y);
c += 12;
}
}else{//管道x向左
let c = state.countNum, total_c = item.lines[indx-1].x - line.x;
while(c <= total_c-6){
let ax = item.lines[indx-1].x-c;
ctx.moveTo(ax,line.y);
let ax2 = item.lines[indx-1].x-c-8;
ctx.lineTo(ax2, line.y);
c += 12;
}
}
}else if(line.x == item.lines[indx-1].x){
if(line.y > item.lines[indx-1].y){//管道y向下
let c = state.countNum, total_c = line.y - item.lines[indx-1].y;
while(c <= total_c-6){
let ay = item.lines[indx-1].y+c;
ctx.moveTo(line.x, ay);
let ay2 = item.lines[indx-1].y+c+8;
ctx.lineTo(line.x, ay2);
c += 12;
}
}else{//管道y向上
let c = state.countNum, total_c = item.lines[indx-1].y - line.y;
while(c <= total_c-4){
let ay = item.lines[indx-1].y-c;
ctx.moveTo(line.x, ay);
let ay2 = item.lines[indx-1].y-c-8;
ctx.lineTo(line.x, ay2);
c += 12;
}
}
}
}
})
ctx.stroke();
ctx.restore();
})
}
const drawInitRect = (ctx)=>{//绘制文字矩形
ctx.save();
ctx.beginPath();ctx.font = "normal 14px 微软雅黑";
ctx.lineWidth = 2;ctx.fillStyle = "#333";
ctx.rect(160, 32, 100, 80);
ctx.fillText("闸门", 196, 130);
ctx.moveTo(370+12, 18);
ctx.arc(370, 38, 18, 0, Math.PI*2);
ctx.rect(330, 57, 80, 26);
ctx.fillText("5.5 m³/H", 416, 33);
ctx.fillText("瞬时流量", 416, 50);
ctx.fillText("7.5 GJ", 416, 96);
ctx.fillText("瞬时热量", 416, 111);
ctx.fillText("9.3 m³/H", 216, 370);
ctx.fillText("瞬时流量", 216, 390);
ctx.fillText("6.8 GJ", 216, 510);
ctx.fillText("瞬时热量", 216, 530);
ctx.fillText("自流井", 326, 770);
ctx.fillText("水箱", 908, 750);
ctx.fillText("水量 73.9%", 788, 690);
ctx.moveTo(466, 56);
ctx.lineTo(466, 85);
ctx.lineTo(490, 85);
ctx.lineTo(490, 105);
ctx.lineTo(510, 105);
ctx.lineTo(510, 85);
ctx.lineTo(538, 85);
ctx.lineTo(538, 56);
ctx.lineTo(468, 56);
ctx.moveTo(420, 401);
ctx.rect(300, 572, 100, 180);
ctx.moveTo(930-52, 606);
ctx.arc(930, 606, 52, Math.PI, Math.PI*2);
ctx.lineTo(982, 706);ctx.lineTo(1003, 706);ctx.lineTo(1003, 730);
ctx.lineTo(860, 730);ctx.lineTo(860, 706);ctx.lineTo(878, 706);ctx.lineTo(878, 606);
ctx.fill();
ctx.restore();
Animation_of_water_flowing_up(ctx);
}
const Animation_of_water_flowing_up = (ctx)=>{//水向上流动动画
const grd = ctx.createLinearGradient(300, 752, 300, 752-state.waterLen);
ctx.save();
ctx.beginPath();
grd.addColorStop(0.3,"#832392");
grd.addColorStop(1,"#c636de");
ctx.fillStyle = grd;ctx.strokeStyle = grd;
//瀑布流动
ctx.moveTo(400, 647);
ctx.quadraticCurveTo(352, 678, 352-state.countNum, 752);
ctx.lineTo(362-state.countNum, 749);
ctx.quadraticCurveTo(366, 678, 400, 653);
//水储存在箱子里
ctx.moveTo(300, 752);
ctx.lineTo(400, 752);
ctx.lineTo(400, 751-state.waterLen);
ctx.lineTo(300, 751-state.waterLen);
ctx.lineTo(300, 752);
//水箱 水量
ctx.moveTo(975, 706);
ctx.lineTo(885, 706);
ctx.lineTo(885, 706-state.waterLen);
ctx.lineTo(975, 706-state.waterLen);
ctx.moveTo(975, 706);
ctx.stroke();
ctx.fill();
ctx.restore();
if(state.waterLen > 30){
randomBubble(ctx,400,752,300,752-state.waterLen);
randomBubble(ctx,955,706,895,706-state.waterLen);
}
}
const randomBubble = (ctx,sx,sy,ex,ey)=>{//水里随机的气泡动画
const width = sx - ex, height = sy - ey-16;
ctx.save();
ctx.beginPath();ctx.strokeStyle = "rgba(255,255,255,0.4)";
ctx.arc(sx-Math.random()*width,sy-8-Math.floor(Math.random()*height),Math.floor(Math.random() * 8) + 1,0,Math.PI*2);
ctx.fillStyle = "rgba(255,255,255,0.4)";
ctx.fill();ctx.stroke();
ctx.restore();
}
const requestAmatinat = (ctx,width,height)=>{
const dotMove = ()=>{
ctx.clearRect(0,0,width,height);
drawLineFunc(ctx,[
{
isDash:false,
lines:[
{x:1180,y:682,isMoveTo:true},
{x:1180,y:546},{x:1420,y:546},
{x:1420,y:546},{x:1420,y:160}
],
color:'#333',lineWidth:16,lineCap:'round'
},
{
isDash:true,
lines:[
{x:1180,y:682,isMoveTo:true},
{x:1180,y:546},{x:1420,y:546},
{x:1420,y:546},
{x:1420,y:160}
],
color:'#c636de',
lineWidth:5,
lineCap:'butt',
lineDash:[12, 3]
},
{isDash:false,lines:[
{x:500,y: 70,isMoveTo:true},
{x:500,y:310},
{x:width - 160,y:310},
{x:100,y:70,isMoveTo:true},
{x:width - 160,y:70},
{x:100,y:70,isMoveTo:true},
{x:width - 160,y:70},
{x:320,y:221,isMoveTo:true},
{x:320, y: 470},
{x:1180,y: 470},
{x:1180,y: 410},
{x:width - 160, y:410}
],color:'#333',lineWidth:16,lineCap:'round'},
{
isDash:true,
lines:[
{x:500,y:70,isMoveTo:true},
{x:500,y:310},
{x:width - 160,y:310},
{x:100,y:70,isMoveTo:true},
{x:width - 160,y:70},
],
color:'#ff9800',
lineWidth:5,
lineCap:'butt',
lineDash:[12, 3]
},
{
isDash:false,
lines:[
{x:100,y:220,isMoveTo:true},
{x:width - 600,y:220},
{x:width - 600,y:160},
{x:width - 160,y:160},
{x:100,y:550,isMoveTo:true},
{x:830, y:550},{x:830,y:650},{x:880,y:650},
{x:980,y:682,isMoveTo:true},
{x:1536, y:682},
{x:1536, y:410},
{x:500,y:550,isMoveTo:true},
{x:500,y:650},{x:401,y:650},
{x:401,y:680,isMoveTo:true},
{x:610,y:680},{x:610,y:750},
{x:710,y:750},{x:710,y:790},
],
color:'#333',lineWidth:16,lineCap:'round'
},
{
isDash:true,
lines:[
{x:100,y:220,isMoveTo:true},
{x:width - 600, y:220},
{x:width - 600, y:160},
{x:width - 160, y:160},
{x:320,y:221,isMoveTo:true},
{x:320, y:470},
{x:1180, y:470},
{x:1180, y:410},
{x:width - 160, y:410},
{x:100,y:550,isMoveTo:true},
{x:830, y:550},{x:830,y:650},{x:880,y:650},
{x:980,y:682,isMoveTo:true},
{x:1536, y:682},{x:1536, y:410},
{x:500,y:550,isMoveTo:true},
{x:500,y:650},{x:401,y:650},
{x:401,y:680,isMoveTo:true},
{x:610,y:680},{x:610,y:750},
{x:710,y:750},{x:710,y:830},
],
color:'#c636de',
lineWidth:5,
lineCap:'butt',
lineDash:[12, 3]
},
]);
drawInitRect(ctx);
state.countNum+=0.6;
state.waterLen+=0.2;
state.qpaoTime+=1;
if(state.qpaoTime >= 100){
state.qpaoTime = 0;
}
if(state.waterLen >= 110){
state.waterLen = 110;
cancelAnimationFrame(state.timeR);
}
if(state.countNum >= 12){
state.countNum = 0;
cancelAnimationFrame(state.timeR);
}
state.timeR = requestAnimationFrame(dotMove);
}
dotMove();
}
const drawChart = ()=>{
if(!starCanvas) return;
starCanvas.width = starCanvas.clientWidth;
starCanvas.height = starCanvas.clientHeight;
const ctx = starCanvas.getContext('2d');
requestAmatinat(ctx,starCanvas.width,starCanvas.height);
}
window.onload = ()=>{
drawChart();
}
登录