视频及在线演示

HTML5制作3D樱花漫天飞舞及浪漫信封

💕浪漫信封：http://haiyong.site/demo/eluvletter
💌3D樱花漫天飞舞：https://haiyong.site/demo/yinghua.html
🌊公众号【海拥】回复【樱花】获取完整源码!

💕 浪漫信封

HTML 内容

<div id="jsi-cherry-container"></div> 
<section class="container" id="contact" >
        <form class="flip">
                <div class="front">
    <h2>To  Ming</h2>
                        <a id="flip2back" href="#">Flip</a>
                </div>
                <div id="content" class="back">
                        <div id="letter">
                                <div class="container">
                                        <div class="flip">                        
                        <div class="front"></div>
                                                <div class="back">
                        <p class="letter"></p> 
                        <a id="close" href="#">Close</a>								
                                                </div>                            
                                        </div>
                                </div>
                        </div>
                        <div id="top">
                                <a id="flip" href="#contact">Flip</a>
                        </div>
                        <div id="lid" class="container">
                                <div class="flip">  
                                        <div class="front">
                                                <a id="open" href="#content"><span></span></a>
                                        </div>                        
                                        <div class="back"></div>
                                </div>
                        </div>
                </div>
        </form>
</section>

<div id="footer">
        <audio id="music2" preload="auto" loop></audio>
        <a id="music_btn2" href="javascript:playPause();"></a>
</div>

部分CSS

#letter {
  background: #fafafa;
  width: 90%;
  height: 95%;
  position: absolute;
  left: 5%;
  top: 5%;
  z-index: 0;
  -webkit-transition: .5s .5s;
  -moz-transition: .5s .5s;
  -o-transition: 0s 0s;
  transition: 0s 0s; }

#content:target #letter {
  top: -40%;
  -o-transition: .5s .5s;
  transition: .5s .5s; }

#letter .container {
  position: absolute;
  width: 100%;
  /*height: 50%;*/
  -webkit-perspective: 800px;
  -moz-perspective: 800px;
  perspective: 800px;
  top: 0;
  left: 0;
  -webkit-transition: 0s 0s;
  -moz-transition: 0s 0s;
  transition: 0s 0s;
  z-index: 1; }

#letter .flip {
  width: 100%;
  height: 100%; }
  #letter .flip {
    position: absolute;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
	transform-style: preserve-3d;
	
    -webkit-transition: -webkit-transform 0.5s 0s;
    -moz-transition: -moz-transform 0.5s 0s;
	transition: -moz-transform 0.5s 0s;
	
    -webkit-transform-origin: left top;
    -moz-transform-origin: left top;
	transform-origin: left top; }
  #letter .flip > .front, #letter .flip > .back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    -moz-backface-visibility: hidden;
	backface-visibility: hidden; }
  #letter .flip > .back {
    -webkit-transform: rotateX(180deg);
    -moz-transform: rotateX(180deg);
	transform: rotateX(180deg); }
  #content:target #letter .flip {
    -webkit-transform: rotateX(180deg);
    -moz-transform: rotateX(180deg);
	transform: rotateX(180deg);
	
    -webkit-transition-duration: 0.5s;
    -moz-transition-duration: 0.5s;
	transition-duration: 0.5s;
	
    -webkit-transition-delay: 1s;
    -moz-transition-delay: 1s;
	transition-delay: 1s; }

letter.js

var aparted = false;
$("#open").click(function(){
	if(!aparted)
	{
		var typed = new Typed('.letter', {
			strings: ["^1000Dear&nbsp;&nbsp;Ming", 
				"M^200ing<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;夜には^300いつも^200寒いよね、^600でも、^600手を^200繋いでいると、^600暖か^200くなるよ！<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;どんなに^300寒い夜も、^600君と^300二人でいれば、^600ちっとも^300寒くない！<br><br><p style='float:right; display:block; width:80px;'>^1000H^200ao</p>"],
			typeSpeed: 100,
			backSpeed: 50
		});	
		$('#open').find("span").eq(0).css('background-position', "0 -150px");
		aparted = true;
		var music = document.getElementById('music2');		
		if (music.paused)
		{
			music.play();
			$('#music_btn2').css("opacity", "1"); 
		}
	}	
});

function playPause() {
    var music = document.getElementById('music2');
    var music_btn = $('#music_btn2');
    if (music.paused){
        music.play();
	music_btn.css("opacity", "1"); 
    }
    else{
        music.pause();
	music_btn.css("opacity", "0.2"); 
    }	
}
window.onload = function () {	
	var currentUrl = window.location.href;
	var firstIndex = currentUrl.indexOf("#");	
	if (firstIndex <= 0) window.location.href = currentUrl + "#contact";
	$('#music2').attr('src', bgmsrc);
	document.addEventListener('touchstart',function (event) { if(event.touches.length > 1) event.preventDefault(); });
	var lastTouchEnd = 0;
	document.addEventListener('touchend',function (event) {
		var now = (new Date()).getTime();
		if(now - lastTouchEnd <= 300) event.preventDefault();
		lastTouchEnd = now;
	}, false);
	document.addEventListener('gesturestart', function (event) { event.preventDefault(); });
	$('body').css('opacity', '1');
	$('#jsi-cherry-container').css('z-index', '-99');
}

演示图片

💕浪漫信封在线演示地址：http://haiyong.site/demo/eluvletter

在这里插入图片描述
在这里插入图片描述

💌 3D樱花漫天飞舞

HTML 内容

<canvas id="sakura"></canvas>
<div class="btnbg">
</div>
<footer class="page-footer">
<span>made by </span>
<a href="http://haiyong.site/moyu" target="_blank">
<img class="touxiang"  src="http://haiyong.site/wp-content/uploads/2021/07/cropped-59255587-1-192x192.jpg" alt="George Martsoukos logo">
</a>
</footer>

CSS 内容

body {
    padding:0;
    margin:0;
    overflow:hidden;
	height: 600px;
}
canvas {
    padding:0;
    margin:0;
}
div.btnbg {
    position:fixed;
    left:0;
    top:0;
}
.page-footer {
  position: fixed;
  right: 0;
  bottom: 20px;
  display: flex;
  align-items: center;
  padding: 5px;
  color: black;
  background: rgba(255, 255, 255, 0.65);
}

.page-footer a {
  display: flex;
  margin-left: 4px;
}
.touxiang{
	width:24px;
	height:24px;
}

部分 JS 内容

<script id="sakura_point_vsh" type="x-shader/x_vertex">
uniform mat4 uProjection;
uniform mat4 uModelview;
uniform vec3 uResolution;
uniform vec3 uOffset;
uniform vec3 uDOF;  //x:focus distance, y:focus radius, z:max radius
uniform vec3 uFade; //x:start distance, y:half distance, z:near fade start

attribute vec3 aPosition;
attribute vec3 aEuler;
attribute vec2 aMisc; //x:size, y:fade

varying vec3 pposition;
varying float psize;
varying float palpha;
varying float pdist;

//varying mat3 rotMat;
varying vec3 normX;
varying vec3 normY;
varying vec3 normZ;
varying vec3 normal;

varying float diffuse;
varying float specular;
varying float rstop;
varying float distancefade;

void main(void) {
    // Projection is based on vertical angle
    vec4 pos = uModelview * vec4(aPosition + uOffset, 1.0);
    gl_Position = uProjection * pos;
    gl_PointSize = aMisc.x * uProjection[1][1] / -pos.z * uResolution.y * 0.5;
    
    pposition = pos.xyz;
    psize = aMisc.x;
    pdist = length(pos.xyz);
    palpha = smoothstep(0.0, 1.0, (pdist - 0.1) / uFade.z);
    
    vec3 elrsn = sin(aEuler);
    vec3 elrcs = cos(aEuler);
    mat3 rotx = mat3(
        1.0, 0.0, 0.0,
        0.0, elrcs.x, elrsn.x,
        0.0, -elrsn.x, elrcs.x
    );
    mat3 roty = mat3(
        elrcs.y, 0.0, -elrsn.y,
        0.0, 1.0, 0.0,
        elrsn.y, 0.0, elrcs.y
    );
    mat3 rotz = mat3(
        elrcs.z, elrsn.z, 0.0, 
        -elrsn.z, elrcs.z, 0.0,
        0.0, 0.0, 1.0
    );
    mat3 rotmat = rotx * roty * rotz;
    normal = rotmat[2];
    
    mat3 trrotm = mat3(
        rotmat[0][0], rotmat[1][0], rotmat[2][0],
        rotmat[0][1], rotmat[1][1], rotmat[2][1],
        rotmat[0][2], rotmat[1][2], rotmat[2][2]
    );
    normX = trrotm[0];
    normY = trrotm[1];
    normZ = trrotm[2];
    
    const vec3 lit = vec3(0.6917144638660746, 0.6917144638660746, -0.20751433915982237);
    
    float tmpdfs = dot(lit, normal);
    if(tmpdfs < 0.0) {
        normal = -normal;
        tmpdfs = dot(lit, normal);
    }
    diffuse = 0.4 + tmpdfs;
    
    vec3 eyev = normalize(-pos.xyz);
    if(dot(eyev, normal) > 0.0) {
        vec3 hv = normalize(eyev + lit);
        specular = pow(max(dot(hv, normal), 0.0), 20.0);
    }
    else {
        specular = 0.0;
    }
    
    rstop = clamp((abs(pdist - uDOF.x) - uDOF.y) / uDOF.z, 0.0, 1.0);
    rstop = pow(rstop, 0.5);
    //-0.69315 = ln(0.5)
    distancefade = min(1.0, exp((uFade.x - pdist) * 0.69315 / uFade.y));
}
</script>

演示图片

💌3D樱花漫天飞舞在线演示地址：https://haiyong.site/demo/yinghua.html

在这里插入图片描述

HTML5制作3D樱花漫天飞舞及浪漫信封 [代码]

如果你在复制上述代码时遇到困难，可以通过下面的方式来创建此项目（使用 JavaScript 的 3D樱花漫天飞舞及浪漫信封）

有很多初学者无法将所有这些代码放在一起。对于他们，我已经把所有的代码放在一起了。关注公众号【海拥】回复【樱花】获取源码。

希望通过本教程，你也可以使用 HTML5制作3D樱花漫天飞舞及浪漫信封。

作者立志打造一个拥有100个小游戏/工具的摸鱼网站，更新进度：50/100

我已经写了很长一段时间的技术博客，并且主要通过CSDN发表，这是我的一篇关于如何使用 HTML5制作3D樱花漫天飞舞及浪漫信封。我喜欢通过文章分享技术与快乐。你可以访问我的博客： https://haiyong.blog.csdn.net/ 以了解更多信息。希望你们会喜欢！😊

💌 欢迎大家在评论区提出意见和建议！💌

# html # 3d # css
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