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Detect if two elements are colliding/overlapping
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/** | |
* Detects if two elements are colliding | |
* | |
* Credit goes to BC on Stack Overflow, cleaned up a little bit | |
* | |
* @link http://stackoverflow.com/questions/5419134/how-to-detect-if-two-divs-touch-with-jquery | |
* @param $div1 | |
* @param $div2 | |
* @returns {boolean} | |
*/ | |
var is_colliding = function( $div1, $div2 ) { | |
// Div 1 data | |
var d1_offset = $div1.offset(); | |
var d1_height = $div1.outerHeight( true ); | |
var d1_width = $div1.outerWidth( true ); | |
var d1_distance_from_top = d1_offset.top + d1_height; | |
var d1_distance_from_left = d1_offset.left + d1_width; | |
// Div 2 data | |
var d2_offset = $div2.offset(); | |
var d2_height = $div2.outerHeight( true ); | |
var d2_width = $div2.outerWidth( true ); | |
var d2_distance_from_top = d2_offset.top + d2_height; | |
var d2_distance_from_left = d2_offset.left + d2_width; | |
var not_colliding = ( d1_distance_from_top < d2_offset.top || d1_offset.top > d2_distance_from_top || d1_distance_from_left < d2_offset.left || d1_offset.left > d2_distance_from_left ); | |
// Return whether it IS colliding | |
return ! not_colliding; | |
}; |
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Thanks. More cleanup