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Pre-calc the grid values

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This commit is contained in:
Richard Davey 2019-07-01 12:19:05 +01:00
parent 95ad802c27
commit 2b713b0038
1 changed files with 71 additions and 54 deletions
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117
src/tweens/builders/StaggerBuilder.js
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@ -26,7 +26,6 @@ var StaggerBuilder = function (value, options)
var start = GetValue(options, 'start', 0);
var ease = GetValue(options, 'ease', null);
var grid = GetValue(options, 'grid', null);
var axis = GetValue(options, 'axis', null);
var from = GetValue(options, 'from', 0);
@ -45,6 +44,62 @@ var StaggerBuilder = function (value, options)
start += value1;
}
if (grid)
{
// Pre-calc the grid to save doing it for ever tweendata update
var gridWidth = grid[0];
var gridHeight = grid[1];
var fromX = 0;
var fromY = 0;
var distanceX = 0;
var distanceY = 0;
var gridValues = [];
if (fromLast)
{
fromX = gridWidth - 1;
fromY = gridHeight - 1;
}
else if (fromValue)
{
fromX = from % gridWidth;
fromY = Math.floor(from / gridWidth);
}
else if (fromCenter)
{
fromX = (gridWidth - 1) / 2;
fromY = (gridHeight - 1) / 2;
}
var gridMax = Number.MIN_SAFE_INTEGER;
for (var toY = 0; toY < gridHeight; toY++)
{
gridValues[toY] = [];
for (var toX = 0; toX < gridWidth; toX++)
{
distanceX = fromX - toX;
distanceY = fromY - toY;
var dist = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
if (dist > gridMax)
{
gridMax = dist;
}
gridValues[toY][toX] = dist;
}
}
console.table(gridValues);
console.log('gridMax', gridMax);
}
var easeFunction = (ease) ? GetEaseFunction(ease) : null;
// target = The target object being tweened
@ -61,85 +116,48 @@ var StaggerBuilder = function (value, options)
// zero offset
total--;
var fromIndex;
var gridSpace = 0;
var toX = index % gridWidth;
var toY = Math.floor(index / gridWidth);
if (fromFirst)
if (toX >= 0 && toX < gridWidth && toY >= 0 && toY < gridHeight)
{
fromIndex = 0;
}
else if (fromCenter)
{
fromIndex = Math.abs((total / 2) - index);
}
else if (fromLast)
{
fromIndex = total;
}
else if (fromValue)
{
fromIndex = Math.abs(from - index);
gridSpace = gridValues[toY][toX];
}
var output;
var fromX = (!fromCenter) ? fromIndex % grid[0] : (grid[0] - 1) / 2;
var fromY = (!fromCenter) ? Math.floor(fromIndex / grid[0]) : (grid[1] - 1) / 2;
var toX = index % grid[0];
var toY = Math.floor(index / grid[0]);
var distanceX = fromX - toX;
var distanceY = fromY - toY;
var gridSpace = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
if (axis === 'x')
{
gridSpace = -distanceX;
}
else if (axis === 'y')
{
gridSpace = -distanceY;
}
if (isRange)
{
var spacing;
if (fromCenter)
{
spacing = ((value2 - value1) / total) * (fromIndex * 2);
spacing = ((value2 - value1) / total) * (index * 2);
}
else
{
spacing = ((value2 - value1) / total) * fromIndex;
spacing = ((value2 - value1) / total) * index;
}
// output += spacing;
// output += spacing + (gridSpace * value1);
if (easeFunction)
{
// output = start + (spacing * easeFunction(fromIndex / total));
}
else
{
// output = start + spacing;
output = gridSpace * value1;
}
}
else if (easeFunction)
{
output = (gridSpace * value1) * easeFunction(index / total);
// output = easeFunction((gridSpace * value1) / (total * maxValue));
output = (gridSpace * value1) * easeFunction(gridSpace / gridMax);
}
else
{
output = gridSpace * value1;
}
console.log('>', index, '/', total, 'gridSpace:', gridSpace);
console.log('>', 'RESULT:', output);
console.log('>', index, '/', total, 'from', fromX, fromY, 'to', toX, toY, 'gridSpace:', gridSpace, 'RESULT:', (output + start));
return output + start;
};
@ -203,8 +221,7 @@ var StaggerBuilder = function (value, options)
output = fromIndex * value1;
}
console.log('>', index, '/', total, 'fromIndex:', fromIndex, 'spacing:', spacing);
console.log('>', 'RESULT:', output);
console.log('>', index, '/', total, 'fromIndex:', fromIndex, 'spacing:', spacing, 'RESULT:', output);
return output + start;
};