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refactor(ui): optimize PushSelected with directional filtering and lazy line computation

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Extract direction helpers to Helper class (EdgeDistance, DirectionalGap,
DirectionToOffset, IsHorizontalDirection) and use them to skip parts not
ahead in the push direction or further than the current best distance.
Defer line computation until parts survive bounding box checks.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-15 01:30:50 -04:00
parent 3c59da17c2
commit 8e0c082876
2 changed files with 69 additions and 60 deletions
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41
OpenNest.Core/Helper.cs
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@@ -1170,6 +1170,47 @@ namespace OpenNest
}
}
public static bool IsHorizontalDirection(PushDirection direction)
{
return direction is PushDirection.Left or PushDirection.Right;
}
public static double EdgeDistance(Box box, Box boundary, PushDirection direction)
{
switch (direction)
{
case PushDirection.Left: return box.Left - boundary.Left;
case PushDirection.Right: return boundary.Right - box.Right;
case PushDirection.Up: return boundary.Top - box.Top;
case PushDirection.Down: return box.Bottom - boundary.Bottom;
default: return double.MaxValue;
}
}
public static Vector DirectionToOffset(PushDirection direction, double distance)
{
switch (direction)
{
case PushDirection.Left: return new Vector(-distance, 0);
case PushDirection.Right: return new Vector(distance, 0);
case PushDirection.Up: return new Vector(0, distance);
case PushDirection.Down: return new Vector(0, -distance);
default: return new Vector();
}
}
public static double DirectionalGap(Box from, Box to, PushDirection direction)
{
switch (direction)
{
case PushDirection.Left: return from.Left - to.Right;
case PushDirection.Right: return to.Left - from.Right;
case PushDirection.Up: return to.Bottom - from.Top;
case PushDirection.Down: return from.Bottom - to.Top;
default: return double.MaxValue;
}
}
public static double ClosestDistanceLeft(Box box, List<Box> boxes)
{
var closestDistance = double.MaxValue;