首頁資訊 HTML5產(chǎn)品360度旋轉(zhuǎn)展示特效

HTML5產(chǎn)品360度旋轉(zhuǎn)展示特效

來源：泰然健康網(wǎng) 時間：2024年12月28日 18:34

體驗效果：http://hovertree.com/texiao/html5/10.htm

下載：http://hovertree.com/hvtart/bjae/t16oddyt.htm

代碼如下：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Full 360 degree View - HoverTree</title>
<style>
.hvtholder {
margin: 0px auto;
width: 789px;
text-align: center;
}
a {
color: blue;
}
</style>
<script type="text/javascript" src="http://hovertree.com/ziyuan/jquery/jquery-1.11.3.min.js"></script>
<script>
var ctx = null; // global variable 2d context
var frame = 1; // 23
var width = 0;
var height = 0;
var started = false;
var images = new Array();
var startedX = -1;
$(function () {
var canvas = document.getElementById("hov"+"ertree_canvas");
canvas.width = 440;// window.innerWidth;
canvas.height = 691;//window.innerHeight;
width = canvas.width;
height = canvas.height;
var bar = document.getElementById('loadHove'+'rTreeBar');
for (var i = 1; i < 24; i++) {
bar.value = i;
if (i < 10) {
images[i] = new Image();
images[i].src = "10/hovertree0" + i + ".jpg";
}
else {
images[i] = new Image();
images[i].src = "10/hovert"+"ree" + i + ".jpg";
}
}
ctx = canvas.getContext("2d");

// mouse event
canvas.addEventListener("mousedown", doMouseDown, false);
canvas.addEventListener('mousemove', doMouseMove, false);
canvas.addEventListener('mouseup', doMouseUp, false);
// loaded();

// frame = 1
frame = 1;
images[frame].onload = function () {
redraw();
bar.style.display = 'none';
}
$("#goHovertr"+"ee").on("click", function () { gohovertree();})
})

function doMouseDown(event) {
var x = event.pageX;
var y = event.pageY;
var canvas = event.target;
var loc = getPointOnCanvas(canvas, x, y);
console.log("mouse down at point( x:" + loc.x + ", y:" + loc.y + ")");
startedX = loc.x;
started = true;
}

if(frame >= 24)
{
frame = 1;
}
if(frame <= 0)
{
frame = 23;
}
redraw();
}
}
}

function doMouseUp(event) {
console.log("mouse up now");
if (started) {
doMouseMove(event);
startedX = -1;
started = false;
}
}

function getPointOnCanvas(canvas, x, y) {
var bbox = canvas.getBoundingClientRect();
return { x: x - bbox.left * (canvas.width / bbox.width),
y: y - bbox.top * (canvas.height / bbox.height)
};
}