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correction to view distance calculation for vertical slides

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This commit is contained in:
Hakim El Hattab 2013-08-11 16:27:52 -04:00
parent a96ace5194
commit cc41aa9115
2 changed files with 13 additions and 13 deletions
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22
js/reveal.js
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@ -1587,13 +1587,14 @@ var Reveal = (function(){
// an array
var horizontalSlides = toArray( document.querySelectorAll( HORIZONTAL_SLIDES_SELECTOR ) ),
horizontalSlidesLength = horizontalSlides.length,
distance;
distanceX,
distanceY;
if( horizontalSlidesLength ) {
// The number of steps away from the present slide that will
// be visible
var viewDistance = isOverview() ? 20 : config.viewDistance;
var viewDistance = isOverview() ? 10 : config.viewDistance;
// Limit view distance on weaker devices
if( isMobileDevice ) {
@ -1606,30 +1607,29 @@ var Reveal = (function(){
var verticalSlides = toArray( horizontalSlide.querySelectorAll( 'section' ) ),
verticalSlidesLength = verticalSlides.length;
// Loops so that it measures 1 between the first and last slides
distanceX = Math.abs( ( indexh - x ) % ( horizontalSlidesLength - viewDistance ) ) || 0;
if( verticalSlidesLength ) {
// Always show the vertical stack itself, even if its child
// slides are invisible
horizontalSlide.style.display = 'block';
var oy = getPreviousVerticalIndex( horizontalSlide );
for( var y = 0; y < verticalSlidesLength; y++ ) {
var verticalSlide = verticalSlides[y];
var dx = x - indexh,
dy = y - indexv;
distanceY = x === indexh ? Math.abs( indexv - y ) : Math.abs( y - oy );
distance = Math.sqrt( dx*dx + dy*dy );
verticalSlide.style.display = distance > viewDistance ? 'none' : 'block';
verticalSlide.style.display = ( distanceX + distanceY ) > viewDistance ? 'none' : 'block';
}
}
else {
// Loops so that it measures 1 between the first and last slides
distance = Math.abs( ( indexh - x ) % ( horizontalSlidesLength - viewDistance ) ) || 0;
horizontalSlide.style.display = distance > viewDistance ? 'none' : 'block';
horizontalSlide.style.display = distanceX > viewDistance ? 'none' : 'block';
}
}

4
js/reveal.min.js vendored
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