Reputation: 85
I am trying to do a Fibonacci Sphere with a canvas like the following code, but instead of the same point showing everywhere I want to show different images, possibly svgs like logos and other images. I've done some research in google like visiting codepen and other places but couldn't find anything that worked. I imagine it would be something like the one in this website here. Any idea on how to approach this?
var cant = 100;
var offset = 2 / cant;
var increment = Math.PI * (3 - Math.sqrt(5));
var canvas = document.getElementById("canvas");
var i;
var circle;
//---Build the elements
for(i = 0; i < cant; i++){
circle = document.createElement("div");
circle.className = "point";
circle.setAttribute("data-index", i);
canvas.appendChild(circle);
};
//---Apply transformations to points
function updatePoints(evt){
var x, y, z, r, a, scale, opacity, point, style;
var angle = (evt) ? (-evt.pageX / 4) * Math.PI / 180 : 0;
for(i = 0; i < cant; i++){
y = (i * offset - 1) + (offset / 2);
r = Math.sqrt(1 - Math.pow(y, 2));
a = ((i + 1) % cant) * increment + angle;
x = Math.cos(a) * r;
z = Math.sin(a) * r;
scale = Math.round(z * 20000) / 100;
opacity = (1 + z) / 1.5;
style = "translate3d(" + (125 + x * 100) + "px, " + (125 + y * 100) + "px, " + scale + "px)";
point = canvas.querySelectorAll("[data-index='" + i +"']");
point[0].style.WebkitTransform = style;
point[0].style.msTransform = style;
point[0].style.transform = style;
point[0].style.opacity = opacity;
}
}
//---Update the points at start
updatePoints();
//---Update the points on mouse move
document.addEventListener("mousemove", updatePoints);
body, html{
height: 100%;
position: relative;
}
body{
background-color: #232B2B;
margin: 0;
padding: 0;
}
#canvas{
height: 250vh;
margin: 0 0;
position: relative;
width: 250vh;
}
.point{
background: red;
border-radius: 50%;
height: 4px;
position: absolute;
transform-style: preserve-3d;
width: 4px;
}
<div id="canvas">
</div>
Any help would be most helpful.
Upvotes: 0
Views: 224
Reputation: 11533
You can continue using the createElement
method.
I added this, to show a random image (from picsum) for each dot:
// Create a new img element
img = document.createElement('img');
// Add the src to each img element.
//Here using the iterator variable to
//change the id of the photo we are retrieving
img.src = 'https://picsum.photos/id/' + i +'/20/20'
// Append the img to the div
circle.appendChild(img);
And I made the circles a bit larger in the CSS (20px) so you can see it.
If you want specific images, you could create an array inside your JS, or pull from a folder on your server.
var cant = 100;
var offset = 2 / cant;
var increment = Math.PI * (3 - Math.sqrt(5));
var canvas = document.getElementById("canvas");
var i;
var circle;
//---Build the elements
for(i = 0; i < cant; i++){
circle = document.createElement("div");
img = document.createElement('img');
img.src = 'https://picsum.photos/id/' + i +'/20/20'
circle.appendChild(img);
circle.className = "point";
circle.setAttribute("data-index", i);
canvas.appendChild(circle);
};
//---Apply transformations to points
function updatePoints(evt){
var x, y, z, r, a, scale, opacity, point, style;
var angle = (evt) ? (-evt.pageX / 4) * Math.PI / 180 : 0;
for(i = 0; i < cant; i++){
y = (i * offset - 1) + (offset / 2);
r = Math.sqrt(1 - Math.pow(y, 2));
a = ((i + 1) % cant) * increment + angle;
x = Math.cos(a) * r;
z = Math.sin(a) * r;
scale = Math.round(z * 20000) / 100;
opacity = (1 + z) / 1.5;
style = "translate3d(" + (125 + x * 100) + "px, " + (125 + y * 100) + "px, " + scale + "px)";
point = canvas.querySelectorAll("[data-index='" + i +"']");
point[0].style.WebkitTransform = style;
point[0].style.msTransform = style;
point[0].style.transform = style;
point[0].style.opacity = opacity;
}
}
//---Update the points at start
updatePoints();
//---Update the points on mouse move
document.addEventListener("mousemove", updatePoints);
body, html{
height: 100%;
position: relative;
}
body{
background-color: #232B2B;
margin: 0;
padding: 0;
}
#canvas{
height: 250vh;
margin: 0 0;
position: relative;
width: 250vh;
}
.point{
background: red;
border-radius: 50%;
height: 20px;
position: absolute;
transform-style: preserve-3d;
width: 20px;
overflow: hidden;
}
<div id="canvas">
</div>
Upvotes: 1