public PlacedTetraStick(TetraStick tetraStick, Coords location, Orientation orientation, ReflectionMode reflectionMode)
{
TetraStick = tetraStick;
Location = location;
Orientation = orientation;
ReflectionMode = reflectionMode;
_lazyWidth = new Lazy<int>(CalculateWidth);
_lazyHeight = new Lazy<int>(CalculateHeight);
_lazyInteriorJunctionPoints = new Lazy<IImmutableList<Coords>>(CalculateInteriorJunctionPoints);
_lazyLines = new Lazy<IEnumerable<IImmutableList<Coords>>>(CalculateLines);
}
private Coords ApplyOrientation(Coords coords)
{
switch (Orientation)
{
case Orientation.North:
return coords;
case Orientation.South:
return new Coords(Width - coords.X, Height - coords.Y);
case Orientation.East:
return new Coords(coords.Y, Height - coords.X);
case Orientation.West:
return new Coords(Width - coords.Y, coords.X);
default:
throw new InvalidOperationException($"Unknown orientation, \"{Orientation}\".");
}
}
private Coords ApplyReflectionMode(Coords coords)
{
switch (ReflectionMode)
{
case ReflectionMode.Normal:
return coords;
case ReflectionMode.MirrorY:
return new Coords(Width - coords.X, coords.Y);
default:
throw new InvalidOperationException($"Unknown reflection mode, \"{ReflectionMode}\".");
}
}
private Coords ApplyLocation(Coords coords)
{
return new Coords(Location.X + coords.X, Location.Y + coords.Y);
}
private Point CoordsToInsetUpperRightVertical(Coords coords)
{
return new Point(
coords.X * _sw + GridLineHalfThickness + TetraStickHalfThickness,
(5 - coords.Y) * _sh + GridLineHalfThickness + TetraStickInset);
}
private Coords ApplyTransform(Coords coords)
{
return ApplyLocation(
ApplyReflectionMode(
ApplyOrientation(coords)));
}
private Point CoordsToInsetLowerLeftVertical(Coords coords)
{
return new Point(
coords.X * _sw + GridLineHalfThickness - TetraStickHalfThickness,
(5 - coords.Y) * _sh + GridLineHalfThickness - TetraStickInset);
}
private Point CoordsToInsetUpperRightHorizontal(Coords coords)
{
return new Point(
coords.X * _sw + GridLineHalfThickness - TetraStickInset,
(5 - coords.Y) * _sh + GridLineHalfThickness - TetraStickHalfThickness);
}
private void AddLineUpVertical(PathSegmentCollection segments, Coords coords1, Coords coords2)
{
segments.Add(new LineSegment
{
Point = CoordsToInsetUpperRightVertical(coords2)
});
segments.Add(new LineSegment
{
Point = CoordsToInsetLowerLeftVertical(coords1)
});
}
private void AddEndCapTop(PathSegmentCollection segments, Coords coords)
{
segments.Add(new ArcSegment
{
Point = CoordsToInsetUpperLeftVertical(coords),
Size = new Size(TetraStickHalfThickness, TetraStickHalfThickness)
});
}
private void AddEndCapRight(PathSegmentCollection segments, Coords coords)
{
segments.Add(new ArcSegment
{
Point = CoordsToInsetUpperRightHorizontal(coords),
Size = new Size(TetraStickHalfThickness, TetraStickHalfThickness)
});
}
private void AddEndCapBottom(PathSegmentCollection segments, Coords coords)
{
segments.Add(new ArcSegment
{
Point = CoordsToInsetLowerRightVertical(coords),
Size = new Size(TetraStickHalfThickness, TetraStickHalfThickness)
});
}
private void AddCornerUpThenRight(PathSegmentCollection segments, Coords coords)
{
segments.Add(new ArcSegment
{
Point = CoordsToInsetLowerLeftHorizontal(coords),
Size = new Size(TetraStickSmallCornerRadius, TetraStickSmallCornerRadius),
SweepDirection = SweepDirection.Clockwise
});
segments.Add(new ArcSegment
{
Point = CoordsToInsetUpperLeftVertical(coords),
Size = new Size(TetraStickLargeCornerRadius, TetraStickLargeCornerRadius)
});
}