public void ApplyDesaturation(Tile tile, TransitionDesaturationMode mode)
{
switch (mode)
{
case TransitionDesaturationMode.ColorFlashlight:
Debug.Assert(_colorFlashlightAnimation != null);
_colorFlashlightAnimation.SetReferenceParameter("frame", tile.Frame);
tile.ApplyDesaturationAnimation(_colorFlashlightAnimation);
break;
case TransitionDesaturationMode.None:
case TransitionDesaturationMode.Regular:
tile.ApplyDesaturationAnimation(tile.IsDesaturated ?
CommonAnimations.SlowOffAnimation :
CommonAnimations.NormalOnAnimation);
break;
}
}
private void CreateTilesWithImagesLayout()
{
// Create a grid of tiles.
for (int row = 0; row < TotalRows; row++)
{
for (int col = 0; col < TotalColumns; col++)
{
Tile tile = new Tile(_panningContainer, Border);
tile.GridRow = row;
tile.GridColumn = col;
tile.Size = new Vector2(PictureFrameWidth, PictureFrameHeight);
tile.Offset = new Vector3(
col * (PictureFrameWidth + Margin),
row * (PictureFrameHeight + Margin),
0);
tile.IsVisible = true;
_allTiles.Add(tile);
_emptyTileCount++;
}
}
_panningContainer.Size = new Vector2(
TotalColumns * (PictureFrameWidth + Margin + 2 * Border) - Margin,
TotalRows * (PictureFrameHeight + Margin + 2 * Border) - Margin);
// Pick the middle Tile to be the "current" one.
_currentTileIndex = TotalRows / 2 * TotalColumns + TotalColumns / 2;
}
private Tile FindNearestEmptyTile(Tile center)
{
// Iterate through all of the tiles, looking for the tile that is the closest to the
// currently selected tile, measured by distance to the center of each tile:
// - If none are found, return 'null'.
Tile found = null;
float distance = 100000000;
var centerOffset = center.Offset;
var centerSize = center.Size;
centerOffset.X += centerSize.X / 2;
centerOffset.Y += centerSize.Y / 2;
foreach (Tile candidate in _allTiles)
{
if ((candidate == center) || (candidate.Photo != null))
{
continue;
}
var candidateOffset = candidate.Offset;
var candiateSize = candidate.Size;
candidateOffset.X += candiateSize.X / 2;
candidateOffset.Y += candiateSize.Y / 2;
var delta = candidateOffset - centerOffset;
float test = delta.Length();
if (distance > test)
{
found = candidate;
distance = test;
}
}
return found;
}
