85 lines
No EOL
2.6 KiB
C#
85 lines
No EOL
2.6 KiB
C#
#region usings
|
|
|
|
using System;
|
|
using OpenTK;
|
|
using SM.Base;
|
|
using SM.Base.Scene;
|
|
using SM.Base.Types;
|
|
using SM.Base.Windows;
|
|
|
|
#endregion
|
|
|
|
namespace SM2D.Scene
|
|
{
|
|
public class Camera : GenericCamera
|
|
{
|
|
internal static int ResizeCounter = 0;
|
|
|
|
private int _resizeCounter = 0;
|
|
private bool _updateWorldScale = false;
|
|
private Vector2? _requestedWorldScale = null;
|
|
|
|
public Vector2? RequestedWorldScale
|
|
{
|
|
get => _requestedWorldScale;
|
|
set
|
|
{
|
|
_requestedWorldScale = value;
|
|
_updateWorldScale = true;
|
|
}
|
|
}
|
|
|
|
public Vector2 WorldScale { get; private set; } = Vector2.Zero;
|
|
|
|
public event Action<Camera> WorldScaleChanged;
|
|
|
|
public CVector2 Position = new CVector2(0);
|
|
public override bool Orthographic { get; } = true;
|
|
|
|
protected override Matrix4 ViewCalculation(IGenericWindow window)
|
|
{
|
|
return Matrix4.LookAt(Position.X, Position.Y, 1, Position.X, Position.Y, 0, 0, 1, 0);
|
|
}
|
|
|
|
protected override bool WorldCalculation(IGenericWindow window, out Matrix4 world)
|
|
{
|
|
world = Matrix4.Identity;
|
|
if (ResizeCounter != _resizeCounter || _updateWorldScale)
|
|
{
|
|
_updateWorldScale = false;
|
|
_resizeCounter = ResizeCounter;
|
|
CalculateWorldScale(window);
|
|
|
|
world = Matrix4.CreateOrthographic(WorldScale.X, WorldScale.Y, .0001f, 1.5f);
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public void CalculateWorldScale(IGenericWindow window)
|
|
{
|
|
if (RequestedWorldScale.HasValue)
|
|
{
|
|
float aspect = window.Width > window.Height ? window.AspectRatio : window.AspectRatioReverse;
|
|
Vector2 requested = RequestedWorldScale.Value;
|
|
|
|
if (requested.X > 0 && requested.Y > 0)
|
|
{
|
|
float requestRatio = requested.X / requested.Y;
|
|
|
|
if (requestRatio > aspect) WorldScale = new Vector2(requested.X, requested.X / aspect);
|
|
else WorldScale = new Vector2(aspect * requested.Y, requested.Y);
|
|
}
|
|
else if (requested.X > 0) WorldScale = new Vector2(requested.X, requested.X / aspect);
|
|
else if (requested.Y > 0) WorldScale = new Vector2(aspect * requested.Y, requested.Y);
|
|
}
|
|
else
|
|
{
|
|
WorldScale = window.WindowSize;
|
|
}
|
|
|
|
WorldScaleChanged?.Invoke(this);
|
|
}
|
|
}
|
|
} |