Syntriax.Engine/Engine.Core/Abstract/ITransform.cs

106 lines
3.8 KiB
C#

using System;
using System.Collections.Generic;
namespace Syntriax.Engine.Core.Abstract;
/// <summary>
/// Represents the transformation properties of an object such as position, scale, and rotation.
/// </summary>
public interface ITransform : IAssignableGameObject, IEnumerable<ITransform>
{
/// <summary>
/// Event triggered when the <see cref="Position"/> of the <see cref="ITransform"/> changes.
/// </summary>
event OnPositionChangedDelegate? OnPositionChanged;
/// <summary>
/// Event triggered when the <see cref="Scale"/> of the <see cref="ITransform"/> changes.
/// </summary>
event OnScaleChangedDelegate? OnScaleChanged;
/// <summary>
/// Event triggered when the <see cref="Rotation"/> of the <see cref="ITransform"/> changes.
/// </summary>
event OnRotationChangedDelegate? OnRotationChanged;
/// <summary>
/// Event triggered when the <see cref="Parent"/> of the <see cref="ITransform"/> changes. The second parameter is the old <see cref="ITransform"/>.
/// </summary>
event OnParentChangedDelegate? OnParentChanged;
/// <summary>
/// Event triggered when a new <see cref="ITransform"/> is added to the <see cref="Children"/>.
/// </summary>
event OnChildrenAddedDelegate? OnChildrenAdded;
/// <summary>
/// Event triggered when an <see cref="ITransform"/> is removed from the <see cref="Children"/>.
/// </summary>
event OnChildrenRemovedDelegate? OnChildrenRemoved;
/// <summary>
/// The world position of the <see cref="ITransform"/> in 2D space.
/// </summary>
Vector2D Position { get; set; }
/// <summary>
/// The world scale of the <see cref="ITransform"/>.
/// </summary>
Vector2D Scale { get; set; }
/// <summary>
/// The world rotation of the <see cref="ITransform"/> in degrees.
/// </summary>
float Rotation { get; set; }
/// <summary>
/// The local position of the <see cref="ITransform"/> in 2D space.
/// </summary>
Vector2D LocalPosition { get; set; }
/// <summary>
/// The local scale of the <see cref="ITransform"/>.
/// </summary>
Vector2D LocalScale { get; set; }
/// <summary>
/// The local rotation of the <see cref="ITransform"/> in degrees.
/// </summary>
float LocalRotation { get; set; }
/// <summary>
/// The parent <see cref="ITransform"/> of the <see cref="ITransform"/>.
/// </summary>
ITransform? Parent { get; }
/// <summary>
/// The <see cref="ITransform"/>s that have this <see cref="ITransform"/> as their <see cref="Parent"/>.
/// </summary>
IReadOnlyList<ITransform> Children { get; }
/// <summary>
/// Sets the parent <see cref="ITransform"/> of this <see cref="ITransform"/>.
/// </summary>
/// <param name="transform">The parent <see cref="ITransform"/> to set.</param>
void SetParent(ITransform? transform);
/// <summary>
/// Adds a child <see cref="ITransform"/> to this <see cref="ITransform"/>.
/// </summary>
/// <param name="transform">The child <see cref="ITransform"/> to add.</param>
void AddChild(ITransform transform);
/// <summary>
/// Removes a child <see cref="ITransform"/> from this <see cref="ITransform"/>.
/// </summary>
/// <param name="transform">The child <see cref="ITransform"/> to remove.</param>
void RemoveChild(ITransform transform);
delegate void OnPositionChangedDelegate(ITransform sender);
delegate void OnScaleChangedDelegate(ITransform sender);
delegate void OnRotationChangedDelegate(ITransform sender);
delegate void OnParentChangedDelegate(ITransform sender, ITransform? previousParent, ITransform? newParent);
delegate void OnChildrenAddedDelegate(ITransform sender, ITransform childrenAdded);
delegate void OnChildrenRemovedDelegate(ITransform sender, ITransform childrenRemoved);
}