css3 点击爆炸下落
$(document).ready(
function
() {
// Generate the clips. In this case I‘m using 5 (or 25 pieces)
(genClips =
function
() {
// For easy use
$t = $(‘.clipped-box
‘);
// Like I said, we‘
re using 5!
var
amount = 5;
// Get the width of each clipped rectangle.
var
width = $t.width() / amount;
var
height = $t.height() / amount;
// The total is the square of the amount
var
totalSquares = Math.pow(amount, 2);
// The HTML of the content
var
html = $t.find(
‘.content‘
).html();
var
y = 0;
for
(
var
z = 0; z <= (amount*width); z = z+width) {
$(
‘<div class="clipped" style="clip: rect(‘
+y+
‘px, ‘
+(z+width)+
‘px, ‘
+(y+height)+
‘px, ‘
+z+
‘px)">‘
+html+
‘</div>‘
).appendTo($t);
if
(z === (amount*width)-width) {
y = y + height;
z = -width;
}
if
(y === (amount*height)) {
z = 9999999;
}
}
})();
// A quick random function for selecting random numbers
function
rand(min, max) {
return
Math.floor(Math.random() * (max - min + 1)) + min;
}
// A variable check for when the animation is mostly over
var
first =
false
,
clicked =
false
;
// On click
$(
‘.clipped-box div‘
).on(
‘click‘
,
function
() {
if
(clicked ===
false
) {
clicked =
true
;
$(
‘.clipped-box .content‘
).css({
‘display‘
:
‘none‘
});
// Apply to each clipped-box div.
$(
‘.clipped-box div:not(.content)‘
).each(
function
() {
// So the speed is a random speed between 90m/s and 120m/s. I know that seems like a lot
// But otherwise it seems too slow. That‘s due to how I handled the timeout.
var
v = rand(120, 90),
angle = rand(80, 89),
// The angle (the angle of projection) is a random number between 80 and 89 degrees.
theta = (angle * Math.PI) / 180,
// Theta is the angle in radians
g = -9.8;
// And gravity is -9.8. If you live on another planet feel free to change
// $(this) as self
var
self = $(
this
);
// time is initially zero, also set some random variables. It‘s higher than the total time for the projectile motion
// because we want the squares to go off screen.
var
t = 0,
z, r, nx, ny,
totalt = 15;
// The direction can either be left (1), right (-1) or center (0). This is the horizontal direction.
var
negate = [1, -1, 0],
direction = negate[ Math.floor(Math.random() * negate.length) ];
// Some random numbers for altering the shapes position
var
randDeg = rand(-5, 10),
randScale = rand(0.9, 1.1),
randDeg2 = rand(30, 5);
// Because box shadows are a bit laggy (by a bit I mean ‘box shadows will not work on individual clipped divs at all‘)
// we‘re altering the background colour slightly manually, in order to give the divs differentiation when they are
// hovering around in the air.
var
color = $(
this
).css(‘backgroundColor
‘).split(‘
rgb(
‘)[1].split(‘
)
‘)[0].split(‘
,
‘),
colorR = rand(-20, 20), // You might want to alter these manually if you change the color
colorGB = rand(-20, 20), // To get the right consistency.
newColor = ‘
rgb(
‘+(parseFloat(color[0])+colorR)+‘
,
‘+(parseFloat(color[1])+colorGB)+‘
,
‘+(parseFloat(color[2])+colorGB)+‘
)
‘;
// And apply those
$(this).css({
‘
transform
‘ : ‘
scale(
‘+randScale+‘
) skew(
‘+randDeg+‘
deg) rotateZ(
‘+randDeg2+‘
deg)
‘,
‘
background
‘ : newColor
});
// Set an interval
z = setInterval(function() {
// Horizontal speed is constant (no wind resistance on the internet)
var ux = ( Math.cos(theta) * v ) * direction;
// Vertical speed decreases as time increases before reaching 0 at its peak
var uy = ( Math.sin(theta) * v ) - ( (-g) * t);
// The horizontal position
nx = (ux * t);
// s = ut + 0.5at^2
ny = (uy * t) + (0.5 * (g) * Math.pow(t, 2));
// Apply the positions
$(self).css({‘
bottom
‘ : (ny)+‘
px
‘, ‘
left
‘ : (nx)+‘
px
‘});
// Increase the time by 0.10
t = t + 0.10;
// If the time is greater than the total time clear the interval
if(t > totalt) {
clicked = false;
first = true;
$(‘
.clipped-box
‘).css({‘
top
‘ : ‘
-1000px
‘, ‘
transition
‘ : ‘
none
‘});
$(self).css({‘
left
‘ : ‘
0
‘, ‘
bottom
‘ : ‘
0
‘, ‘
opacity
‘ : ‘
1
‘, ‘
transition
‘ : ‘
none
‘, ‘
transform
‘ : ‘
none
‘});
// Finally clear the interval
clearInterval(z);
}
}, 10); // Run this interval every 10ms. Changing this will change the pace of the animation
});
}
});
r = setInterval(function() {
// This is a bit rough but it does the job
if(first === true) {
// I‘
ve just put
this
in
so the deleted box will come down again after its been clicked.
// That way you can keep pressing delete.
$(
‘.clipped-box‘
).css({
‘top‘
:
‘0‘
,
‘transition‘
:
‘‘
});
$(
‘.clipped-box div‘
).css({
‘opacity‘
:
‘1‘
,
‘transition‘
:
‘‘
,
‘background-color‘
:
‘‘
});
$(
‘.content‘
).css({
‘display‘
:
‘block‘
});
first =
false
;
}
}, 300);
});
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