SnapToSpacingResult GetSnapToSpacingResult(Rect sourceRect, float middlePos, ReferenceRects referenceRects)
{
float sourceRectCenter = referenceRects.Orientation == Orientation.Vertical ? GetMaxPos(sourceRect, SnapReference.VerticalCenter).y : GetMaxPos(sourceRect, SnapReference.HorizontalCenter).x;
float offset = sourceRectCenter - middlePos;
SnapToSpacingResult minResult = new SnapToSpacingResult {
Offset = offset,
ReferenceRects = referenceRects
};
return(minResult.Distance <= SnapDistance * 1 / m_CurrentScale ? minResult : null);
}
SnapToSpacingResult GetClosestSpacingPosition(Rect sourceRect, Orientation orientation)
{
SnapToSpacingResult minResult = null;
float minDistance = float.MaxValue;
foreach (var spacingPos in m_SpacingPositions.Where(spacingPos => spacingPos.Value.Orientation == orientation))
{
SnapToSpacingResult result = GetSnapToSpacingResult(sourceRect, spacingPos.Key, spacingPos.Value);
if (result != null && minDistance > result.Distance)
{
minDistance = result.Distance;
minResult = result;
}
}
return(minResult);
}
List <SnapToSpacingResult> GetClosestSpacingPositions(Rect sourceRect)
{
List <SnapToSpacingResult> results = new List <SnapToSpacingResult>();
SnapToSpacingResult horizontalResult = GetClosestSpacingPosition(sourceRect, Orientation.Horizontal);
if (horizontalResult != null)
{
results.Add(horizontalResult);
}
SnapToSpacingResult verticalResult = GetClosestSpacingPosition(sourceRect, Orientation.Vertical);
if (verticalResult != null)
{
results.Add(verticalResult);
}
return(results);
}
static void ApplySnapToSpacingResult(ref Vector2 snappingOffset, Rect sourceRect, ref Rect r1, SnapToSpacingResult result)
{
if (result.ReferenceRects.Orientation == Orientation.Horizontal)
{
r1.x = sourceRect.x - result.Offset;
snappingOffset.x = snappingOffset.x < float.MaxValue ? snappingOffset.x + result.Offset : result.Offset;
}
else
{
r1.y = sourceRect.y - result.Offset;
snappingOffset.y = snappingOffset.y < float.MaxValue ? snappingOffset.y + result.Offset : result.Offset;
}
}