public DraggedKeyframe(int index, KeyFrame original)
{
this.index = index;
this.original = original;
}
/// <summary>
/// Initializes the drop down window by creating the necessary GUI. Must be called after construction and before
/// use.
/// </summary>
/// <param name="keyFrame">Keyframe whose properties to edit.</param>
/// <param name="updateCallback">Callback triggered when event values change.</param>
/// <param name="closeCallback">Callback triggered just before the window closes.</param>
internal void Initialize(KeyFrame keyFrame, Action<KeyFrame> updateCallback, Action<bool> closeCallback)
{
GUIFloatField timeField = new GUIFloatField(new LocEdString("Time"), 40, "");
timeField.Value = keyFrame.time;
timeField.OnChanged += x => { keyFrame.time = x; changesMade = true; updateCallback(keyFrame); };
GUIFloatField valueField = new GUIFloatField(new LocEdString("Value"), 40, "");
valueField.Value = keyFrame.value;
valueField.OnChanged += x => { keyFrame.value = x; changesMade = true; updateCallback(keyFrame); };
GUILayoutY vertLayout = GUI.AddLayoutY();
vertLayout.AddFlexibleSpace();
GUILayoutX horzLayout = vertLayout.AddLayoutX();
horzLayout.AddFlexibleSpace();
GUILayout contentLayout = horzLayout.AddLayoutY();
GUILayout timeLayout = contentLayout.AddLayoutX();
timeLayout.AddSpace(5);
timeLayout.AddElement(timeField);
timeLayout.AddFlexibleSpace();
GUILayout componentLayout = contentLayout.AddLayoutX();
componentLayout.AddSpace(5);
componentLayout.AddElement(valueField);
componentLayout.AddFlexibleSpace();
horzLayout.AddFlexibleSpace();
vertLayout.AddFlexibleSpace();
this.closeCallback = closeCallback;
}
/// <summary>
/// Creates a new animation curve.
/// </summary>
/// <param name="keyFrames">Keyframes to initialize the curve with.</param>
public AnimationCurve(KeyFrame[] keyFrames)
{
Internal_Create(this, keyFrames);
}
private static extern void Internal_SetKeyFrames(IntPtr thisPtr, KeyFrame[] keyframes);
private static extern void Internal_Create(AnimationCurve instance, KeyFrame[] keyframes);
/// <summary>
/// Returns the position of the tangent, in element's pixel space.
/// </summary>
/// <param name="keyFrame">Keyframe that the tangent belongs to.</param>
/// <param name="type">Which tangent to retrieve the position for.</param>
/// <returns>Position of the tangent, relative to the this GUI element's origin, in pixels.</returns>
private Vector2I GetTangentPosition(KeyFrame keyFrame, TangentType type)
{
Vector2I position = CurveToPixelSpace(new Vector2(keyFrame.time, keyFrame.value));
Vector2 normal;
if (type == TangentType.In)
normal = -EdAnimationCurve.TangentToNormal(keyFrame.inTangent);
else
normal = EdAnimationCurve.TangentToNormal(keyFrame.outTangent);
// X/Y ranges aren't scaled 1:1, adjust normal accordingly
normal.x /= GetRange();
normal.y /= yRange;
normal = Vector2.Normalize(normal);
// Convert normal (in percentage) to pixel values
Vector2I offset = new Vector2I((int)(normal.x * TANGENT_LINE_DISTANCE),
(int)(-normal.y * TANGENT_LINE_DISTANCE));
return position + offset;
}
/// <summary>
/// Draws zero, one or two tangents for the specified keyframe. Whether tangents are drawn depends on the provided
/// mode.
/// </summary>
/// <param name="keyFrame">Keyframe to draw the tangents for.</param>
/// <param name="tangentMode">Type of tangents in the keyframe.</param>
private void DrawTangents(KeyFrame keyFrame, TangentMode tangentMode)
{
Vector2I keyframeCoords = CurveToPixelSpace(new Vector2(keyFrame.time, keyFrame.value));
if (IsTangentDisplayed(tangentMode, TangentType.In))
{
Vector2I tangentCoords = GetTangentPosition(keyFrame, TangentType.In);
canvas.DrawLine(keyframeCoords, tangentCoords, Color.LightGray);
DrawDiamond(tangentCoords, 2, Color.Green, Color.Black);
}
if (IsTangentDisplayed(tangentMode, TangentType.Out))
{
Vector2I tangentCoords = GetTangentPosition(keyFrame, TangentType.Out);
canvas.DrawLine(keyframeCoords, tangentCoords, Color.LightGray);
DrawDiamond(tangentCoords, 2, Color.Green, Color.Black);
}
}
