30 lines
921 B
C#
30 lines
921 B
C#
|
using Theriapolis.Core.Util;
|
|||
|
|
|
|||
|
|
namespace Theriapolis.Core.World;
|
|||
|
|
|
|||
|
|
/// <summary>
|
|||
|
|
/// A bridge where a road or rail polyline crosses a river.
|
|||
|
|
/// Endpoints are in world-pixel space and follow the actual road polyline,
|
|||
|
|
/// so the deck visually matches the road at the crossing regardless of meander.
|
|||
|
|
/// </summary>
|
|||
|
|
public readonly struct Bridge
|
|||
|
|
{
|
|||
|
|
public readonly Vec2 Start;
|
|||
|
|
public readonly Vec2 End;
|
|||
|
|
public readonly int RoadId;
|
|||
|
|
|
|||
|
|
public Bridge(Vec2 start, Vec2 end, int roadId)
|
|||
|
|
{
|
|||
|
|
Start = start;
|
|||
|
|
End = end;
|
|||
|
|
RoadId = roadId;
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
/// <summary>Center of the deck (midpoint of Start–End).</summary>
|
|||
|
|
public float WorldPixelX => (Start.X + End.X) * 0.5f;
|
|||
|
|
public float WorldPixelY => (Start.Y + End.Y) * 0.5f;
|
|||
|
|
|
|||
|
|
/// <summary>Road direction angle (radians) from Start to End.</summary>
|
|||
|
|
public float RoadAngle => MathF.Atan2(End.Y - Start.Y, End.X - Start.X);
|
|||
|
|
}
|