/// <summary>
/// Rotates the given <see cref="TransformComponent"/> by the specified <paramref name="eulerAngles"/> in the coordinate space defined by <paramref name="relativeTo"/>.
/// </summary>
/// <param name="transform">The <see cref="TransformComponent"/> to update.</param>
/// <param name="eulerAngles">The euler angles in radians to rotate by.</param>
/// <param name="relativeTo">The coordinate space to perform the rotation in.</param>
/// <exception cref="ArgumentNullException">If <paramref name="transform"/> is <see langword="null"/>.</exception>
/// <exception cref="ArgumentException">If <paramref name="transform"/> has <see cref="TransformComponent.UseTRS"/> set to <see langword="null"/>.</exception>
/// <remarks>
/// This method updates the <see cref="TransformComponent.LocalMatrix"/> and <see cref="TransformComponent.WorldMatrix"/> after transformation.
/// </remarks>
public static void Rotate(this TransformComponent transform, ref Vector3 eulerAngles, Space relativeTo = Space.Self)
{
if (transform == null)
{
throw new ArgumentNullException(nameof(transform));
}
if (!transform.UseTRS)
{
throw new ArgumentException("Must use TRS", nameof(transform));
}
Quaternion rotation = Quaternion.Identity;
if (relativeTo == Space.Self)
{
//What do I do here???
if (eulerAngles.X != 0f)
{
var right = transform.WorldMatrix.Right; right.Normalize();
Quaternion.RotationAxis(ref right, eulerAngles.X, out var axisRotation);
Quaternion.Multiply(ref rotation, ref axisRotation, out rotation);
}
if (eulerAngles.Y != 0f)
{
var up = transform.WorldMatrix.Up; up.Normalize();
Quaternion.RotationAxis(ref up, eulerAngles.Y, out var axisRotation);
Quaternion.Multiply(ref rotation, ref axisRotation, out rotation);
}
if (eulerAngles.Z != 0f)
{
var forward = transform.WorldMatrix.Forward; forward.Normalize();
Quaternion.RotationAxis(ref forward, eulerAngles.Z, out var axisRotation);
Quaternion.Multiply(ref rotation, ref axisRotation, out rotation);
}
}
else
{
//Quaternion.RotationYawPitchRoll(eulerAngles.Y, eulerAngles.X, eulerAngles.Z, out rotation);
MathUtilEx.ToQuaternion(ref eulerAngles, out rotation);
}
if (transform.Parent != null)
{
transform.Parent.WorldMatrix.Decompose(out var _, out Quaternion parentRotation, out var _);
parentRotation.Conjugate();
Quaternion.Multiply(ref rotation, ref parentRotation, out rotation);
}
Quaternion.Multiply(ref transform.Rotation, ref rotation, out transform.Rotation);
transform.UpdateWorldMatrix();
}
public override async Task Execute()
{
var bottom = new Vector3(0, Height, 0);
var duration = TimeSpan.FromSeconds(2);
var elapsed = TimeSpan.Zero;
var easingFunctions = ((EasingFunction[])Enum.GetValues(typeof(EasingFunction))).Reverse().ToList();
easingFunctions.RemoveAt(0);
{
var startPosition = FirstPosition;
var endPosition = FirstPosition - bottom;
var sphere = SpherePrefab.InstantiateSingle(FirstPosition);
Entity.Scene.Entities.Add(sphere);
Script.AddOverTimeAction((progress) =>
{
sphere.Transform.Position = MathUtilEx.Interpolate(startPosition, endPosition, progress, EasingFunction.ElasticEaseOut);
}, TimeSpan.FromSeconds(2));
}
var startPositions = new List <Vector3>();
var transforms = new List <TransformComponent>();
for (int i = 0; i < easingFunctions.Count; i++)
{
Vector3 startPosition = FirstPosition + new Vector3(i + 1, 0, 0);
var sphere = SpherePrefab.InstantiateSingle(startPosition);
transforms.Add(sphere.Transform);
startPositions.Add(startPosition);
Entity.Scene.Entities.Add(sphere);
}
var ran = new Random();
var colors = Enumerable.Range(0, transforms.Count).Select(i => ran.NextColor()).ToList();
while (Game.IsRunning)
{
var progress = (float)(elapsed.TotalSeconds / duration.TotalSeconds);
if (progress > 1.0f)
{
progress = 1.0f;
}
DebugText.Print($"Progress = {progress}", new Int2(10));
for (int i = 0; i < transforms.Count; i++)
{
var t = transforms[i];
var easing = easingFunctions[i];
t.Position = MathUtilEx.Interpolate(startPositions[i], startPositions[i] - bottom, progress, easing);
var diffuse = MathUtilEx.Interpolate(Color.White, colors[i], progress, EasingFunction.Linear);
t.Entity.Get <ModelComponent>().SetMaterialParameter(MaterialKeys.DiffuseValue, diffuse);
}
elapsed += Game.UpdateTime.Elapsed;
if (Input.IsKeyPressed(Xenko.Input.Keys.Space))
{
//reset
elapsed = TimeSpan.Zero;
}
await Script.NextFrame();
}
}
