<%!
public static final int HALO_RADIUS = 220;
public static final double ANGLE_OFFSET = Math.PI * 2 / 17; // Math.PI / 4.0;
public static final int ADD_LEFT = -55;
public static final int ADD_TOP = -60;
public String haloPosition( HttpServletRequest request, PageContext pageContext )
{
java.util.Collection sips = (java.util.Collection) request.getAttribute( "sips" );
javax.servlet.jsp.jstl.core.LoopTagStatus loop = (javax.servlet.jsp.jstl.core.LoopTagStatus) pageContext.getAttribute( "loop" );
int haloCount = sips.size();
int index = loop.getCount() - 1;
double angle = (Math.PI/2) + ANGLE_OFFSET + ((2 * Math.PI) - (2 * ANGLE_OFFSET)) * index / (haloCount - 1);
long x = Math.round( (Math.cos( angle ) + 1) * HALO_RADIUS ) + ADD_LEFT;
long y = Math.round( (Math.sin( angle ) + 1) * HALO_RADIUS ) + ADD_TOP;
return "left: " + x + "px; top: " + y + "px";
}
public static final int SQUARE_SIZE = 440;
public String alternateHaloPosition( HttpServletRequest request, PageContext pageContext )
{
java.util.Collection sips = (java.util.Collection) request.getAttribute( "sips" );
javax.servlet.jsp.jstl.core.LoopTagStatus loop = (javax.servlet.jsp.jstl.core.LoopTagStatus) pageContext.getAttribute( "loop" );
int haloCount = sips.size();
int index = loop.getCount() - 1;
int nth;
int from;
int x;
int y;
if ( haloCount < 5 ) {
int dx = index % 2;
int dy = index / 2;
return "left: " + (ADD_LEFT + dx * HALO_RADIUS * 2) + "px; top: " + (ADD_TOP + dy * HALO_RADIUS * 2) + "px;";
}
if ( index - 1 < haloCount / 2 ) {
nth = index;
from = haloCount - haloCount / 2;
if ( nth <= from / 2 ) {
from = from - from / 2;
x = 0;
y = SQUARE_SIZE - ( SQUARE_SIZE * nth / from );
} else {
nth = nth - ( from - from / 2 );
from = from / 2;
x = SQUARE_SIZE * nth / from;
y = 0;
}
} else {
nth = index - (haloCount - haloCount / 2);
from = haloCount / 2;
if ( nth <= from / 2 ) {
from = from - from / 2;
x = SQUARE_SIZE;
y = SQUARE_SIZE * nth / from;
} else {
nth = nth - ( from - from / 2 );
from = from / 2;
x = SQUARE_SIZE - SQUARE_SIZE * nth / from;
y = SQUARE_SIZE;
}
}
return "left: " + ( x + ADD_LEFT ) + "px; top: " + ( y + ADD_TOP ) + "px";
}
%>
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