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refactor: ICamera interface added with view and projection matrices fields

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Syntriax
2026-01-26 23:48:16 +03:00
parent af6dde84fd
commit 7c9973a5e7
6 changed files with 69 additions and 38 deletions
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49
Engine.Integration/Engine.Integration.MonoGame/Behaviours/MonoGameCamera2D.cs
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@@ -7,31 +7,39 @@ namespace Engine.Integration.MonoGame;
public class MonoGameCamera2D : Behaviour, ICamera2D, IFirstFrameUpdate, ILastFrameUpdate, IPreDraw
{
public Event<MonoGameCamera2D> OnMatrixTransformChanged { get; } = new();
public Event<MonoGameCamera2D> OnViewMatrixChanged { get; } = new();
public Event<MonoGameCamera2D> OnProjectionMatrixChanged { get; } = new();
public Event<MonoGameCamera2D> OnViewportChanged { get; } = new();
public Event<MonoGameCamera2D> OnZoomChanged { get; } = new();
public GraphicsDeviceManager Graphics { get; private set; } = null!;
public ITransform2D Transform { get; private set; } = null!;
public Matrix MatrixTransform
public Matrix4x4 ProjectionMatrix
{
get;
set
private set
{
if (field == value)
return;
field = value;
OnMatrixTransformChanged.Invoke(this);
OnProjectionMatrixChanged.Invoke(this);
}
} = Matrix.Identity;
} = Matrix4x4.Identity;
public Vector2D Position
public Matrix4x4 ViewMatrix
{
get => Transform.Position;
set => Transform.Position = value;
}
get;
private set
{
if (field == value)
return;
field = value;
OnViewMatrixChanged.Invoke(this);
}
} = Matrix4x4.Identity;
public Viewport Viewport
{
@@ -61,21 +69,15 @@ public class MonoGameCamera2D : Behaviour, ICamera2D, IFirstFrameUpdate, ILastFr
}
} = 1f;
public float Rotation
{
get => Transform.Rotation;
set => Transform.Rotation = value;
}
// TODO This causes delay since OnPreDraw calls assuming this is called in in Update
public Vector2D ScreenToWorldPosition(Vector2D screenPosition)
{
Vector2D worldPosition = Vector2.Transform(screenPosition.ToVector2(), Matrix.Invert(MatrixTransform)).ToVector2D();
Vector2D worldPosition = Vector2.Transform(screenPosition.ToVector2(), ViewMatrix.Inverse.ToXnaMatrix()).ToVector2D();
return worldPosition.Scale(EngineConverterExtensions.screenScale);
}
public Vector2D WorldToScreenPosition(Vector2D worldPosition)
{
Vector2D screenPosition = Vector2.Transform(worldPosition.ToVector2(), MatrixTransform).ToVector2D();
Vector2D screenPosition = Vector2.Transform(worldPosition.ToVector2(), ViewMatrix.ToXnaMatrix()).ToVector2D();
return screenPosition.Scale(EngineConverterExtensions.screenScale);
}
@@ -89,11 +91,12 @@ public class MonoGameCamera2D : Behaviour, ICamera2D, IFirstFrameUpdate, ILastFr
public void PreDraw()
{
MatrixTransform =
Matrix.CreateTranslation(new Vector3(-Position.X, Position.Y, 0f)) *
Matrix.CreateRotationZ(Rotation * Math.DegreeToRadian) *
Matrix.CreateScale(Transform.Scale.X.Max(Transform.Scale.Y)) *
Matrix.CreateScale(Zoom) *
Matrix.CreateTranslation(new Vector3(Viewport.Width * .5f, Viewport.Height * .5f, 0f));
ProjectionMatrix = Matrix.CreateOrthographicOffCenter(Viewport.X, Viewport.Width, Viewport.Height, Viewport.Y, 0, 1).FromXnaMatrix();
ViewMatrix =
Matrix4x4.CreateTranslation(new Vector3D(-Transform.Position.X, Transform.Position.Y, 0f)) *
Matrix4x4.CreateRotationZ(Transform.Rotation * Math.DegreeToRadian) *
Matrix4x4.CreateScale(Transform.Scale.X.Max(Transform.Scale.Y)) *
Matrix4x4.CreateScale(Zoom) *
Matrix4x4.CreateTranslation(new Vector3D(Viewport.Width * .5f, Viewport.Height * .5f, 0f));
}
}