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test1.html
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<link rel="stylesheet" type="text/css" href="../lib/css/Map5.min.css">
<script type="text/javascript" src="../lib/Map5.min.js"></script>
<script type="text/javascript" src="js/citiesValue.js"></script>
<style type="text/css">
body{
margin: 0px;
}
</style>
<script type="text/javascript">
var context = null;
var context1 = null;
var context2 = null;
var canvas_1 = null;
var canvas_2 = null;
var canvas = null;
var x = 300;
var y = 60;
function init(){
// var canvas = document.getElementById("myCanvas");
// context = canvas.getContext('2d');
canvas_1 = document.getElementById("canvas_1");
context1 = canvas_1.getContext("2d");
canvas_2 = document.getElementById("canvas_2");
context2 = canvas_2.getContext("2d");
}
function addImage(){
var image = document.getElementById("park");
context.drawImage(image,100,100,30,30);
}
function rotate(){
context.translate(250,125);
context.rotate(90*Math.PI/180);
context.translate(-250,-125);
}
function onload() {
var canvas = document.getElementById('myCanvas');
var ctx1 = canvas.getContext('2d');
var image1 = new Image();
image1.onload = function() {
// regular rotation about center
var xpos = canvas.width/2;
var ypos = canvas.height/2;
ctx1.drawImage(image1, xpos - image1.width / 2, ypos - image1.height / 2);
ctx1.save();
ctx1.translate(xpos, ypos);
ctx1.rotate(47 * Math.PI / 180);//旋转47度
ctx1.translate(-xpos, -ypos);
ctx1.drawImage(image1, xpos - image1.width / 2, ypos - image1.height / 2);
ctx1.restore();
}
image1.src = 'images/eg_tulip.jpg';
}
function onload2() {
var canvas = document.getElementById('test');
var ctx1 = canvas.getContext('2d');
var image1 = new Image();
image1.onload = function() {
// regular rotation about center
var xpos = canvas.width/2;
var ypos = canvas.height/2;
ctx1.drawImage(image1, xpos - image1.width / 2, ypos - image1.height / 2);
ctx1.save();
ctx1.translate(xpos, ypos);
ctx1.rotate(47 * Math.PI / 180);//旋转47度
ctx1.translate(-xpos, -ypos);
ctx1.drawImage(image1, xpos - image1.width / 2, ypos - image1.height / 2);
ctx1.restore();
}
image1.src = 'images/a.png';
}
function loadImg(){
var canvas = document.getElementById('myCanvas');
var ctx1 = canvas.getContext('2d');
var image1 = new Image();
image1.onload = function() {
// regular rotation about center
var xpos = canvas.width/2;
var ypos = canvas.height/2;
ctx1.drawImage(image1, 20,40);
ctx1.drawImage(image1, -20,-40);
ctx1.save();
ctx1.translate(xpos, ypos);
ctx1.rotate(47 * Math.PI / 180);//旋转47度
ctx1.translate(-xpos, -ypos);
ctx1.drawImage(image1, 20,40);
ctx1.drawImage(image1, -20,-40);
ctx1.restore();
}
image1.src = 'images/tile.png';
}
function addImage_2(){
var image1 = new Image();
image1.onload = function() {
// regular rotation about center
var xpos = 600/2;
var ypos = 400/2;
context2.save();
context2.translate(xpos, ypos);
context2.rotate(20 * Math.PI / 180);
context2.translate(-xpos, -ypos);
context2.drawImage(image1,172,72);
context2.restore();
context2.drawImage(image1,0,0);
// canvas = document.createElement("canvas");
// var context = canvas.getContext("2d");
// context.drawImage(image1,0,0,256,256);
// context2.drawImage(image1,300,60,256,256);
}
image1.src = 'images/tile.png';
}
function addImage_1(){
var xpos = 600/2;
var ypos = 400/2;
context1.translate(xpos, ypos);
context1.rotate(30 * Math.PI / 180);//旋转47度
context1.translate(-xpos, -ypos);
context1.fillRect(300,60,256,256);
// context2.translate(xpos, ypos);
// context2.rotate(30 * Math.PI / 180);//旋转47度
// context2.translate(-xpos, -ypos);
// context2.translate(xpos, ypos);
// context2.rotate(30 * Math.PI / 180);//旋转47度
// context2.translate(-xpos, -ypos);
// context2.translate(x, y);
// context2.rotate(30 * Math.PI / 180);//旋转47度
// context2.translate(-x, -y);
canvas = document.createElement("canvas");
// canvas.width = 300 + 600 * Math.cos(30*Math.PI/180);
// canvas.height = 200 + * Math.sin(30*Math.PI/180);
canvas.width = 600*2;
canvas.height = 400*2;
var context = canvas.getContext("2d");
var x_1 = canvas.width/2;
var y_1 = canvas.height/2;
context.translate(x_1, y_1);
context.rotate(-30 * Math.PI / 180);//旋转47度
context.translate(-x_1, -y_1);
var x_2 = x_1 - canvas_2.width/2;
var y_2 = y_1 - canvas_2.height/2;
context.drawImage(canvas_2,0,0,600,400,x_2,y_2,600,400);
context1.drawImage(canvas_2,300,60,256,256,300,60,256,256);
}
</script>
<title>Map5 -- 地图级别</title>
<body onload="init()">
<!-- mapDiv 为初始化地图的容器，给定高度和宽度，并指定定位方式为绝对定位 -->
<!-- <div id="mapDiv" style="height:800px;width:100%;position:absolute;top:30px;">
</div> -->
<canvas id="myCanvas" width="600" height="400" style="border:1px solid #d3d3d3;">
Your browser does not support the HTML5 canvas tag.
</canvas>
<canvas id="canvas_1" width="600" height="400"></canvas>
<canvas id="canvas_2" width="600" height="400"></canvas>
<!-- <canvas id="test" width="1600" height="800"></canvas> -->
<img src="images/parking_lot.png" id="park">
<!-- <button onclick="addImage()">添加点</button>
<button onclick="rotate()">旋转</button>
<button onclick="loadImg()">img</button> -->
<br/>
<button onclick="addImage_2()">2_图片</button>
<button onclick="addImage_1()">1_图片</button>
</body>