To get the indeces of the tiles in diagonal 'rows' or 'slices' in a grid you
could do something like this:
function getDiagonalGridSlices(numRows:Number, numCols:Number,
startingCorner:String):Array{
var a1 = new Array(), a2 = new Array(), c = 0;
for(var i=0; i<numCols; i++){
a2[i] = new Array();
for(var j=0; j<numRows; j++){
a2[i][j] = c;
c++;
}
}
if(startingCorner == 'topLeft' || startingCorner == 'bottomRight'){
for(var i=0; i<numCols*2 + 1; i++){
a1[i] = new Array();
var ii = i;
for(var j=0; j<numRows; j++){
if(a2[ii][j] != undefined){
a1[i].push(a2[ii][j]);
}
ii--;
if(ii < 0){
break;
}
}
}
if(startingCorner == 'bottomRight'){
a1.reverse();
}
}else if(startingCorner == 'topRight' || startingCorner ==
'bottomLeft'){
// todo - adjust accordingly
}
return a1;
}
// for testing
// In the library: a 50x50 shape, linkage name 'square'
import mx.transitions.Tween;
import mx.transitions.easing.*;
numRows = 3;
numCols = 5;
tileWidth = tileHeight = 50;
diagonalGridSlices = getDiagonalGridSlices(numRows, numCols, 'topLeft');
tiles = createTiles(numRows, numCols, tileWidth, tileHeight);
m = 0;
buildTiles = setInterval(fadeTiles, 100);
function createTiles(numRows:Number, numCols:Number, tileWidth:Number,
tileHeight:Number):Array{
var tiles = new Array();
for(var i=0; i<numRows*numCols; i++){
tiles[i] = _root.attachMovie("square", "tile" + i + "_mc", i, {_x:i %
numRows * tileWidth,_y:Math.floor(i / numRows) * tileHeight, _alpha:0});
}
return tiles;
}
function fadeTiles():Void{
if (m == diagonalGridSlices.length){
clearInterval(buildTiles);
} else {
for(var i=0, len=diagonalGridSlices[m].length; i<len; i++){
new Tween(tiles[diagonalGridSlices[m][i]], "_alpha",
Regular.easeInOut, 0, 100, 35,false);
}
m++;
}
}
hth
--------------
Andreas Weber
motiondraw.com
Hehe, all good. Thanks John. I'm sitting here trying to write something
mathematically that works. Turns out I am the suck at math, so it's making
this complicated. Hand coding the array would be laborsome and wouldn't
allow for extensibility.
Grrr...
fM.
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