/// <summary>
/// This is the method to use when removing a key in the editor. It will remove
/// the corresponding KeyWrapper from the control.
/// </summary>
/// <param name="key"></param>
public void RemoveKey(long id)
{
KeyWrapper wrapper = Control.Keys[id];
Control.Keys.Remove(wrapper);
Curve.Keys.Remove(wrapper.Key);
ComputeTangents();
}
public override void Undo()
{
KeyWrapper key = Control.Keys[affectedKey];
key.SetInTangent(prevTangentInValue);
key.SetOutTangent(prevTangentOutValue);
key.TangentInMode = prevTangentInMode;
key.TangentOutMode = prevTangentOutMode;
}
/// <summary>
/// Performs the actual movement of the keys.
/// </summary>
private void ScaleKeys(Point newMin, Point newMax)
{
for (int i = 0; i < affectedKeys.Length; i++)
{
// Remap to the new box;
Point newPosition = new Point((newMax.X - newMin.X) * normalizedPos[i].X + newMin.X, (newMax.Y - newMin.Y) * normalizedPos[i].Y + newMin.Y);
KeyWrapper k = Control.Keys[affectedKeys[i]];
k.MoveKey((float)(newPosition.X - k.Key.Position), (float)(newPosition.Y - k.Key.Value));
}
}
/// <summary>
/// This is the method to use when adding a key in the editor. It will create
/// the corresponding KeyWrapper and add it to the control.
/// </summary>
public KeyWrapper AddKey(CurveKey key, long id = -1)
{
Curve.Keys.Add(key);
KeyWrapper newKey = new KeyWrapper(key, this, KeyTangentMode.Smooth, id);
Control.Keys.Add(newKey);
ComputeTangents();
return(newKey);
}
/// <summary>
/// Computes the tangents of all automatic keys.
/// </summary>
public void ComputeTangents()
{
for (int i = 0; i < Curve.Keys.Count; i++)
{
KeyWrapper wrapper = Control.GetWrapper(Curve.Keys[i]);
if (wrapper != null)
{
wrapper.ComputeTangentIfAuto();
}
}
}
/// <summary>
/// Performs the actual movement of the keys.
/// </summary>
private void ChangeTangent(float tangent)
{
KeyWrapper key = Control.Keys[affectedKey];
if (selectedTangent == TangentSelectionMode.In)
{
key.SetInTangent(tangent);
}
else
{
key.SetOutTangent(tangent);
}
}
/// <summary>
/// Creates a new command to select the given keys. You can pass null to deselect all.
/// </summary>
public ChangeTangentCommand(CurveEditorControl2 control, long keyId, TangentSelectionMode selectedTangent)
: base(control)
{
// Store the parameters.
this.selectedTangent = selectedTangent;
this.affectedKey = keyId;
KeyWrapper key = control.Keys[keyId];
prevTangentInValue = key.Key.TangentIn;
prevTangentOutValue = key.Key.TangentOut;
prevTangentInMode = key.TangentInMode;
prevTangentOutMode = key.TangentOutMode;
}
/// <summary>
/// Performs the actual movement of the keys.
/// </summary>
private void MoveKeys(float positionOffset, float valueOffset)
{
List <CurveWrapper> affectedCurves = new List <CurveWrapper>();
for (int i = 0; i < affectedKeys.Length; i++)
{
KeyWrapper key = Control.Keys[affectedKeys[i]];
key.MoveKey(positionOffset, valueOffset);
// Create the set of curve affected by this move so we can recalculate
// the auto tangents.
if (!affectedCurves.Contains(key.Curve))
{
affectedCurves.Add(key.Curve);
}
}
// Compute all auto tangents.
foreach (CurveWrapper curve in affectedCurves)
{
curve.ComputeTangents();
}
}
/// <summary>
/// This method is only to be used when undoing a RemoveKeys command.
/// </summary>
internal void RestoreKey(KeyWrapper key)
{
Curve.Keys.Add(key.Key);
Control.Keys.Add(key);
ComputeTangents();
}
/// <summary>
/// This method is only to be used when undoing a RemoveKeys command.
/// </summary>
internal void RestoreKey(KeyWrapper key)
{
Curve.Keys.Add(key.Key);
Control.Keys.Add(key);
ComputeTangents();
}
/// <summary>
/// This is the method to use when adding a key in the editor. It will create
/// the corresponding KeyWrapper and add it to the control.
/// </summary>
public KeyWrapper AddKey(CurveKey key, long id = -1)
{
Curve.Keys.Add(key);
var newKey = new KeyWrapper(key, this, KeyTangentMode.Smooth, id);
Control.Keys.Add(newKey);
ComputeTangents();
return newKey;
}