/// <summary>
/// Recursively updates all the children of a node.
/// </summary>
/// <param name="srcA">Source skeleton node for the current frame.</param>
/// <param name="srcB">Source skeleton node for the next frame.</param>
/// <param name="srcP">Parent skeleton node (use null if theres no parent).</param>
/// <param name="dest">Destination skeleton node to have the two sources applied to.</param>
/// <param name="framePercent">A value between 0.0 and 1.0 stating how far along the animation is
/// from the current frame.</param>
void RecursiveUpdate(SkeletonNode srcA, SkeletonNode srcB, SkeletonNode srcP, SkeletonNode dest, float framePercent)
{
// Set the position
Vector2 vA;
Vector2 vB;
if (_scale == 1.0f)
{
vA = srcA.Position;
vB = srcB.Position;
}
else
{
vA = srcA.Position * _scale;
vB = srcB.Position * _scale;
}
dest.Position = Vector2.Lerp(vA, vB, framePercent);
// Check if the node is part of a modifier animation
if (srcP == null)
{
// Set the length
dest.SetLength(srcA.GetLength() * _scale);
}
else
{
// This is a modifier so check for inheriting node values
dest.SetLength(srcP.GetLength());
if (!srcP.IsModifier && srcP.Parent != null)
{
dest.SetAngle(srcP.GetAngle());
}
}
// Update the child nodes (if there is any)
for (var i = 0; i < srcA.internalNodes.Count; i++)
{
var nextSrcP = (srcP == null ? null : srcP.internalNodes[i]);
RecursiveUpdate(srcA.internalNodes[i], srcB.internalNodes[i], nextSrcP, dest.internalNodes[i], framePercent);
}
}
/// <summary>
/// Recursively copies the length of one set of nodes to another set of nodes
/// </summary>
/// <param name="src">Source root SkeletonNode to copy from</param>
/// <param name="dest">Destination root SkeletonNode to copy to</param>
public static void CopyLength(SkeletonNode src, SkeletonNode dest)
{
if (src == null)
{
Debug.Fail("src is null.");
return;
}
if (dest == null)
{
Debug.Fail("dest is null.");
return;
}
dest.SetLength(src.GetLength());
for (var i = 0; i < src.Nodes.Count(); i++)
{
CopyLength(src.Nodes.ElementAt(i), dest.Nodes.ElementAt(i));
}
}
/// <summary>
/// Recursively copies the length of one set of nodes to another set of nodes
/// </summary>
/// <param name="src">Source root SkeletonNode to copy from</param>
/// <param name="dest">Destination root SkeletonNode to copy to</param>
public static void CopyLength(SkeletonNode src, SkeletonNode dest)
{
if (src == null)
{
Debug.Fail("src is null.");
return;
}
if (dest == null)
{
Debug.Fail("dest is null.");
return;
}
dest.SetLength(src.GetLength());
for (var i = 0; i < src.Nodes.Count(); i++)
{
CopyLength(src.Nodes.ElementAt(i), dest.Nodes.ElementAt(i));
}
}
/// <summary>
/// Recursively updates all the children of a node.
/// </summary>
/// <param name="srcA">Source skeleton node for the current frame.</param>
/// <param name="srcB">Source skeleton node for the next frame.</param>
/// <param name="srcP">Parent skeleton node (use null if theres no parent).</param>
/// <param name="dest">Destination skeleton node to have the two sources applied to.</param>
/// <param name="framePercent">A value between 0.0 and 1.0 stating how far along the animation is
/// from the current frame.</param>
void RecursiveUpdate(SkeletonNode srcA, SkeletonNode srcB, SkeletonNode srcP, SkeletonNode dest, float framePercent)
{
// Set the position
Vector2 vA;
Vector2 vB;
if (_scale == 1.0f)
{
vA = srcA.Position;
vB = srcB.Position;
}
else
{
vA = srcA.Position * _scale;
vB = srcB.Position * _scale;
}
dest.Position = Vector2.Lerp(vA, vB, framePercent);
// Check if the node is part of a modifier animation
if (srcP == null)
{
// Set the length
dest.SetLength(srcA.GetLength() * _scale);
}
else
{
// This is a modifier so check for inheriting node values
dest.SetLength(srcP.GetLength());
if (!srcP.IsModifier && srcP.Parent != null)
dest.SetAngle(srcP.GetAngle());
}
// Update the child nodes (if there is any)
for (var i = 0; i < srcA.internalNodes.Count; i++)
{
var nextSrcP = (srcP == null ? null : srcP.internalNodes[i]);
RecursiveUpdate(srcA.internalNodes[i], srcB.internalNodes[i], nextSrcP, dest.internalNodes[i], framePercent);
}
}