如何让我的logo JS动画比例像网站上的图像标志？

Question

我花了很多时间在我的网站上创建这个非常酷的Logo动画！我制作的徽标动画与徽标图像的大小相同，我可以轻松地将它应用到网站上。

问题是我网站上的徽标设置为在屏幕宽度达到某个点后开始缩小。它设置为最大宽度，但也设置为缩放到其父div的大小。我的动画没有这样做......我意识到在将我的徽标动画应用到我的网站之前我需要弄清楚这一点。因为它不会以同样的方式行事......而且我真的不会使用css缩放和媒体查询，因为那将是一团糟。

这是我的动画。

// Create an array to store our particles
var particles = [];

// The amount of particles to render
var particleCount = 10;

// The maximum velocity in each direction
var maxVelocity = 3;

// The target frames per second (how often do we want to update / redraw the scene)
var targetFPS = 33;

// Set the dimensions of the canvas as variables so they can be used.
var canvasWidth = 400;
var canvasHeight = 400;

// Create an image object (only need one instance)
var imageObj = new Image();

// Once the image has been downloaded then set the image on all of the particles
imageObj.onload = function() {
    particles.forEach(function(particle) {
            particle.setImage(imageObj);
    });
};

// Once the callback is arranged then set the source of the image
imageObj.src = "http://www.freeiconspng.com/uploads/misc-cloud-smoke-element-png-by-dbszabo1-on-deviantart-19.png";

// A function to create a particle object.
function Particle(context) {

    // Set the initial x and y positions
    this.x = 0;
    this.y = 0;

    // Set the initial velocity
    this.xVelocity = 0;
    this.yVelocity = 0;

    // Set the radius
    this.radius = 5;

    // Store the context which will be used to draw the particle
    this.context = context;

    // The function to draw the particle on the canvas.
    this.draw = function() {
        
        // If an image is set draw it
        if(this.image){
            this.context.drawImage(this.image, this.x-228, this.y-228);         
            // If the image is being rendered do not draw the circle so break out of the draw function                
            return;
        }
        // Draw the circle as before, with the addition of using the position and the radius from this object.
    };

    // Update the particle.
    this.update = function() {
        // Update the position of the particle with the addition of the velocity.
        this.x += this.xVelocity;
        this.y += this.yVelocity;

        // Check if has crossed the right edge
        if (this.x >= canvasWidth) {
            this.xVelocity = -this.xVelocity;
            this.x = canvasWidth;
        }
        // Check if has crossed the left edge
        else if (this.x <= 0) {
            this.xVelocity = -this.xVelocity;
            this.x = 0;
        }

        // Check if has crossed the bottom edge
        if (this.y >= canvasHeight) {
            this.yVelocity = -this.yVelocity;
            this.y = canvasHeight;
        }
        
        // Check if has crossed the top edge
        else if (this.y <= 0) {
            this.yVelocity = -this.yVelocity;
            this.y = 0;
        }
    };

    // A function to set the position of the particle.
    this.setPosition = function(x, y) {
        this.x = x;
        this.y = y;
    };

    // Function to set the velocity.
    this.setVelocity = function(x, y) {
        this.xVelocity = x;
        this.yVelocity = y;
    };
    
    this.setImage = function(image){
        this.image = image;
    }
}

// A function to generate a random number between 2 values
function generateRandom(min, max){
    return Math.random() * (max - min) + min;
}

// The canvas context if it is defined.
var context;

// Initialise the scene and set the context if possible
function init() {
    var canvas = document.getElementById('myCanvas');
    if (canvas.getContext) {

        // Set the context variable so it can be re-used
        context = canvas.getContext('2d');

        // Create the particles and set their initial positions and velocities
        for(var i=0; i < particleCount; ++i){
            var particle = new Particle(context);
            
            // Set the position to be inside the canvas bounds
            particle.setPosition(generateRandom(0, canvasWidth), generateRandom(0, canvasHeight));
            
            // Set the initial velocity to be either random and either negative or positive
            particle.setVelocity(generateRandom(-maxVelocity, maxVelocity), generateRandom(-maxVelocity, maxVelocity));
            particles.push(particle);            
        }
    }
    else {
        alert("Please use a modern browser");
    }
}

// The function to draw the scene
function draw() {
    // Clear the drawing surface and fill it with a black background
    //context.fillStyle = "rgba(0, 0, 0, 0.5)";
    //context.fillRect(0, 0, 400, 400);
    context.clearRect(0,0,1014,611);
    // Go through all of the particles and draw them.
    particles.forEach(function(particle) {
        particle.draw();
    });
}

// Update the scene
function update() {
    particles.forEach(function(particle) {
        particle.update();
    });
}

// Initialize the scene
init();

// If the context is set then we can draw the scene (if not then the browser does not support canvas)
if (context) {
    setInterval(function() {
        // Update the scene befoe drawing
        update();

        // Draw the scene
        draw();
    }, 1000 / targetFPS);
}



var deg = [0, 0, 0, 0];

rotate = function() {
  for (var i = 0; i < 3; ++i) {
    deg[i] += 180 * 3;
    if (Math.random() > 8)
      deg[i] += 180;
    $('#flip' + i).css({
      '-webkit-transform': 'rotateY(' + deg[i] + 'deg)',
      '-o-transform': 'rotateY(' + deg[i] + 'deg)',
      'transform': 'rotateY(' + deg[i] + 'deg)'
    });
  }
};

rotate();
setInterval(rotate, 8000);

.animateVSS{
  width:282px;
  height:283px;
  position:relative;
  margin-top:20px;
  margin-left:100px;
}
.vsslogocover{
  position:absolute;
  z-index:2;
}

.blackdrop{
  position:relative;
  top:-189px;
  margin-left:44px;
  opacity:0;
}

#myCanvas{
  position:relative;
    background:black;
    position:absolute;
    z-index;4;
    margin-top:-190px;
    margin-left:-190px;
    border-radius:100%;
}

.coin {
  background-image: url("http://portalpacific.net/jsfid/vss-animated-front-logo1.png");
  background-size: 100% 100%;
  border-radius: 100%;
  height: 182px;
  position: relative;
  width:185px;
  -webkit-transition: 1.8s ease-in-out;
  -o-transition: 1.8s ease-in-out;
  transition: 1.8s ease-in-out;
  -webkit-transform-style: preserve-3d;
  -o-transform-style: preserve-3d;
  transform-style: preserve-3d;
  margin-top:50px;
  margin-left:48px;
  z-index:1;
  background-color: black;
}

.coin:before {
  background-color: black;
  background-image: url("http://portalpacific.net/jsfid/vss22-animated-back-logo-185x1821.png");
  background-size: 100% 100%;
  content: '';
  height: 182px;
  left: 0;
  position: absolute;
  top: 0;
  width: 185px;
  margin-top:1px;
  -webkit-transform: translateZ(-5px);
  -o-transform: translateZ(-5px);
  transform: translateZ(-5px);
  border-radius:100%;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<div class="animateVSS">
<img class="vsslogocover" src="http://portalpacific.net/jsfid/VSS%20Bazooka%20Logo%20animation%20cover%20logo%20border.png" alt="Smiley face" width="282" height="283">
<span id="flip0" class="coin" style="display:inline-block;"></span>
<img class="blackdrop" src="http://portalpacific.net/jsfid/bg2.png" alt="Smiley face" width="192" height="192">
<canvas id="myCanvas" width="200" height="200"></canvas>
</div>

这里也是JSFiddle。

感谢您的帮助！

Answer 1

代码已更新。 它使用画布效果，它响应并使用css3动画。我试图在动画的开始和结束时让动画显示硬币的正面和背面:) 干杯！

https://jsfiddle.net/BenjaminGraham/rudngfq9/

// Create an array to store our particles
var particles = [];

// The amount of particles to render
var particleCount = 10;

// The maximum velocity in each direction
var maxVelocity = 3;

// The target frames per second (how often do we want to update / redraw the scene)
var targetFPS = 33;

// Set the dimensions of the canvas as variables so they can be used.
var canvasWidth = 400;
var canvasHeight = 400;

// Create an image object (only need one instance)
var imageObj = new Image();

// Once the image has been downloaded then set the image on all of the particles
imageObj.onload = function() {
    particles.forEach(function(particle) {
            particle.setImage(imageObj);
    });
};

// Once the callback is arranged then set the source of the image
imageObj.src = "http://www.freeiconspng.com/uploads/misc-cloud-smoke-element-png-by-dbszabo1-on-deviantart-19.png";

// A function to create a particle object.
function Particle(context) {

    // Set the initial x and y positions
    this.x = 0;
    this.y = 0;

    // Set the initial velocity
    this.xVelocity = 0;
    this.yVelocity = 0;

    // Set the radius
    this.radius = 5;

    // Store the context which will be used to draw the particle
    this.context = context;

    // The function to draw the particle on the canvas.
    this.draw = function() {
        
        // If an image is set draw it
        if(this.image){
            this.context.drawImage(this.image, this.x-228, this.y-228);         
            // If the image is being rendered do not draw the circle so break out of the draw function                
            return;
        }
        // Draw the circle as before, with the addition of using the position and the radius from this object.
    };

    // Update the particle.
    this.update = function() {
        // Update the position of the particle with the addition of the velocity.
        this.x += this.xVelocity;
        this.y += this.yVelocity;

        // Check if has crossed the right edge
        if (this.x >= canvasWidth) {
            this.xVelocity = -this.xVelocity;
            this.x = canvasWidth;
        }
        // Check if has crossed the left edge
        else if (this.x <= 0) {
            this.xVelocity = -this.xVelocity;
            this.x = 0;
        }

        // Check if has crossed the bottom edge
        if (this.y >= canvasHeight) {
            this.yVelocity = -this.yVelocity;
            this.y = canvasHeight;
        }
        
        // Check if has crossed the top edge
        else if (this.y <= 0) {
            this.yVelocity = -this.yVelocity;
            this.y = 0;
        }
    };

    // A function to set the position of the particle.
    this.setPosition = function(x, y) {
        this.x = x;
        this.y = y;
    };

    // Function to set the velocity.
    this.setVelocity = function(x, y) {
        this.xVelocity = x;
        this.yVelocity = y;
    };
    
    this.setImage = function(image){
        this.image = image;
    }
}

// A function to generate a random number between 2 values
function generateRandom(min, max){
    return Math.random() * (max - min) + min;
}

// The canvas context if it is defined.
var context;

// Initialise the scene and set the context if possible
function init() {
    var canvas = document.getElementById('myCanvas');
    if (canvas.getContext) {

        // Set the context variable so it can be re-used
        context = canvas.getContext('2d');

        // Create the particles and set their initial positions and velocities
        for(var i=0; i < particleCount; ++i){
            var particle = new Particle(context);
            
            // Set the position to be inside the canvas bounds
            particle.setPosition(generateRandom(0, canvasWidth), generateRandom(0, canvasHeight));
            
            // Set the initial velocity to be either random and either negative or positive
            particle.setVelocity(generateRandom(-maxVelocity, maxVelocity), generateRandom(-maxVelocity, maxVelocity));
            particles.push(particle);            
        }
    }
    else {
        alert("Please use a modern browser");
    }
}

// The function to draw the scene
function draw() {
    // Clear the drawing surface and fill it with a black background
    //context.fillStyle = "rgba(0, 0, 0, 0.5)";
    //context.fillRect(0, 0, 400, 400);
    context.clearRect(0,0,1014,611);
    // Go through all of the particles and draw them.
    particles.forEach(function(particle) {
        particle.draw();
    });
}

// Update the scene
function update() {
    particles.forEach(function(particle) {
        particle.update();
    });
}

// Initialize the scene
init();

// If the context is set then we can draw the scene (if not then the browser does not support canvas)
if (context) {
    setInterval(function() {
        // Update the scene befoe drawing
        update();

        // Draw the scene
        draw();
    }, 1000 / targetFPS);
}



var deg = [0, 0, 0, 0];

rotate = function() {
  for (var i = 0; i < 3; ++i) {
    deg[i] += 180 * 3;
    if (Math.random() > 8)
      deg[i] += 180;
    $('#flip' + i).css({
      '-webkit-transform': 'rotateY(' + deg[i] + 'deg)',
      '-o-transform': 'rotateY(' + deg[i] + 'deg)',
      'transform': 'rotateY(' + deg[i] + 'deg)'
    });
  }
};

rotate();
setInterval(rotate, 8000);

.animateVSS {
  width: 282px;
  height: 283px;
  position: relative;
}

.vsslogocover {
  position: absolute;
  z-index: 2;
}

.blackdrop {
  position: relative;
  opacity: 0;
}

#myCanvas {
  position: absolute;
  background: black;
  z-index;
  4;
  top: 17.5%;
  left: 17.5%;
  bottom: 0;
  border-radius: 100%;
}

.coin {
  background-image: url("http://portalpacific.net/jsfid/vss-animated-front-logo1.png");
  background-size: 100% 100%;
  border-radius: 100%;
  height: 65%;
  width: 65%;
  top: 17.5%;
  left: 17.5%;
  position: relative;
  -webkit-transition: 1.8s ease-in-out;
  -o-transition: 1.8s ease-in-out;
  transition: 1.8s ease-in-out;
  -webkit-transform-style: preserve-3d;
  -o-transform-style: preserve-3d;
  transform-style: preserve-3d;
  z-index: 1;
  background-color: black;
}

.coin:before {
  background-color: black;
  background-image: url("http://portalpacific.net/jsfid/vss22-animated-back-logo-185x1821.png");
  background-size: 100% 100%;
  content: '';
  height: 100%;
  width: 100%;
  left: 0%;
  position: absolute;
  top: 0%;
  -webkit-transform: translateZ(-5px);
  -o-transform: translateZ(-5px);
  transform: translateZ(-5px);
  border-radius: 100%;
}

#flip0 {
  -webkit-animation-name: Logo;
  animation-name: Logo;
  -webkit-animation-duration: 5s;
  animation-duration: 5s;
  -webkit-animation-iteration-count: infinite;
  /* Safari 4.0 - 8.0 */
  animation-iteration-count: infinite;
}

@keyframes Logo {
  0% {
    transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
  }  
  25% {
    transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
  }
  50% {
    transform: rotateY(900deg);
    -webkit-transform: rotateY(900deg);
  }  
    75% {
    transform: rotateY(900deg);
    -webkit-transform: rotateY(900deg);
  }
  100% {
    transform: rotateY(0deg);
    -webkit-transform: rotateY(0deg);
  }
}

@media screen and (max-width:767px) {
  .animateVSS {
    width: 180px;
    height: 180px;
  }
}

@media screen and (min-width:768px) {
  .animateVSS {
    width: 280px;
    height: 280px;
  }
  #myCanvas {
    width: 180px;
    height: 180px;
    top: 17.5%;
    left: 17.5%;
  }
}

<div class="animateVSS">
  <img class="vsslogocover" src="http://portalpacific.net/jsfid/VSS%20Bazooka%20Logo%20animation%20cover%20logo%20border.png" alt="Smiley face" width="100%" height="100%">
  <span id="flip0" class="coin" style="display:inline-block;">
  </span>
  <img class="blackdrop" src="http://portalpacific.net/jsfid/bg2.png" alt="Smiley face" width="100%" height="100%">
  <canvas id="myCanvas" width="120%" height="120%"></canvas>
</div>

Answer 2

这里不是专家，但我试图搞乱你的代码。 从我看到的是代码中的所有css参数都是固定像素，这使得元素不响应屏幕大小。

您必须使父div固定像素（或响应，如果您愿意），然后设置所有子元素响应父。这可以是父母宽度的100％。

因此，当屏幕尺寸缩小时，您无需担心元素被破坏。它们将全部封装在父div中。

这不是您需要的完美代码，但它会让您对这里发生的事情有所了解。

CSS

.animateVSS{
  position:relative;
  width:100px;
  height:100px;
}
.vsslogocover{
  position:absolute;
  z-index:2;
  width:100%;
}

.blackdrop{
  position:absolute;
  width:100%;
}

#myCanvas{
    background:black;
    position:absolute;
    z-index;4;
    width:100%;
    height:100%;
    border-radius:50%;
}

.coin {
  background-image: url("http://portalpacific.net/jsfid/vss-animated-front-logo1.png");
  background-size:contain;
  border-radius: 50%;
  position: absolute;
  width:100%;
  -webkit-transition: 1.8s ease-in-out;
  -o-transition: 1.8s ease-in-out;
  transition: 1.8s ease-in-out;
  -webkit-transform-style: preserve-3d;
  -o-transform-style: preserve-3d;
  transform-style: preserve-3d;
  z-index:1;
  background-color: black;
}

.coin:before {
  background-color: black;
  background-image: url("http://portalpacific.net/jsfid/vss22-animated-    back-logo-185x1821.png");
  background-size: contain;
  content: '';
  height: 70px;
  left: 0;
  position: absolute;
  top: 0;
  width: 70px;
  margin-top:15px;
  margin-left:15px;
  border-radius:100%;
}

HTML

<div class="animateVSS">
<img class="vsslogocover" src="http://portalpacific.net/jsfid/VSS%20Bazooka%20Logo%20animation%20cover%20logo%20border.png" alt="Smiley face">
<span id="flip0" class="coin" style="display:inline-block;"></span>
<img class="blackdrop" src="http://portalpacific.net/jsfid/bg2.png" alt="Smiley face">
<canvas id="myCanvas"></canvas>
</div>

Answer 3

您正在设置显式宽度并使用显式像素值和坐标。这会让它变得棘手。尝试将所有坐标作为宽度的百分比进行处理，然后您可以动态检测宽度（或将其设置在类外）并且所有内容都应该缩放。这不是一个快速修复，但它也不是很复杂。

Answer 4

我调整了你的css以尽可能地使用百分比，只需用你的CSS替换你的CSS，你就会发现你的徽标现在已经响应了。您可以根据自己的喜好调整百分比，使其更宽或更小：

rotate();
setInterval(rotate, 8000);

#myCanvas{
  position:relative;
    background:black;
    position:absolute;
    z-index;4;
    margin-top:-190px;
    margin-left:-190px;
    border-radius:100%;
}

    .animateVSS {
    position: relative;
    width: 20%;
    max-width: 282px;
    max-height: 283px;
    padding-top: 20%;
    display: inline-block;
}
    .vsslogocover {
    position: absolute;
    z-index: 2;
    width: 100%;
    height: auto;
    max-width: 282px;
    max-height: 283px;
    top: 0;
}
    .coin {
    height: 70%;
    max-height: 182px;
    width: 66%;
    max-width: 185px;
    margin-top: 16%;
    margin-left: 17%;
    top: 0;
    position: absolute;
    background-image: url(http://portalpacific.net/jsfid/vss-animated-front-logo1.png);
    background-size: 100% 100%;
    border-radius: 100%;
    -o-transition: 1.8s ease-in-out;
    transition: 1.8s ease-in-out;
    -webkit-transform-style: preserve-3d;
    -o-transform-style: preserve-3d;
    transform-style: preserve-3d;
    z-index: 1;
    background-color: black;
}
    .coin:before {
    background-color: black;
    background-image: url(http://portalpacific.net/jsfid/vss22-animated-back-logo-185x1821.png);
    background-size: 100% 100%;
    content: '';
    left: 0;
    position: absolute;
    margin-top: 1px;
    -webkit-transform: translateZ(-5px);
    -o-transform: translateZ(-5px);
    transform: translateZ(-5px);
    border-radius: 100%;
    height: 100%;
    max-height: 182px;
    width: 100%;
    max-width: 185px;
    top: 0;
}
    .blackdrop {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: auto;
    max-width: 282px;
    max-height: 283px;
    top: 0;
}
    #myCanvas {
    background: black;
    position: absolute;
    margin-left: 17%;
    border-radius: 100%;
    top: 0;
    width: 70%;
    max-width: 200px;
    max-height: 200px;
    height: auto;
    margin-top: 17%;
}