public GTAnimClip BuildAnimClip()
{
GTAnimClip exportClip = new GTAnimClip();
exportClip.name = clip.name;
// collect all paths
HashSet <string> bonePaths = new HashSet <string>();
foreach (var binding in AnimationUtility.GetCurveBindings(clip))
{
bonePaths.Add(binding.path);
}
foreach (var path in bonePaths)
{
// get all curves we're interested in:
// translation and rotation curves
var idx = GetBoneIndexForPath(renderer.bones, path);
if (idx == -1)
{
// skip bones that don't exist duh
Debug.Log("Can't find bone with path " + path + ", skipping.");
continue;
}
var boneCurve = new BoneCurve();
boneCurve.boneIndex = idx;
exportClip.curves.Add(boneCurve);
List <AnimationCurve> curves = new List <AnimationCurve>();
var translationCurveX = GetCurve(clip, idx, "m_LocalPosition.x", curves);
var translationCurveY = GetCurve(clip, idx, "m_LocalPosition.y", curves);
var translationCurveZ = GetCurve(clip, idx, "m_LocalPosition.z", curves);
var rotationCurveX = GetCurve(clip, idx, "m_LocalRotation.x", curves);
var rotationCurveY = GetCurve(clip, idx, "m_LocalRotation.y", curves);
var rotationCurveZ = GetCurve(clip, idx, "m_LocalRotation.z", curves);
var rotationCurveW = GetCurve(clip, idx, "m_LocalRotation.w", curves);
float duration = 0.0f;
foreach (var curve in curves)
{
curve.postWrapMode = WrapMode.ClampForever;
var len = curve.length;
var lastKey = curve.keys[len - 1];
if (duration < lastKey.time)
{
duration = lastKey.time;
}
}
// sample all curves at 30hz, create one keyframe for each sample
float frequency = 1.0f / 60.0f;
float progress = 0.0f;
while (progress < duration)
{
Keyframe key = new Keyframe();
key.time = progress;
key.position.x = translationCurveX == null ? 0.0f : translationCurveX.Evaluate(progress);
key.position.y = translationCurveY == null ? 0.0f : translationCurveY.Evaluate(progress);
key.position.z = translationCurveZ == null ? 0.0f : translationCurveZ.Evaluate(progress);
key.rotation.x = rotationCurveX == null ? 0.0f : rotationCurveX.Evaluate(progress);
key.rotation.y = rotationCurveY == null ? 0.0f : rotationCurveY.Evaluate(progress);
key.rotation.z = rotationCurveZ == null ? 0.0f : rotationCurveZ.Evaluate(progress);
key.rotation.w = rotationCurveW == null ? 0.0f : rotationCurveW.Evaluate(progress);
boneCurve.keys.Add(key);
progress += frequency;
}
if (progress != duration)
{ // @TODO
}
}
return(exportClip);
}
public void OnGUI()
{
clip = EditorGUILayout.ObjectField("Clip", clip, typeof(AnimationClip), false) as AnimationClip;
gameObject = EditorGUILayout.ObjectField("Object", gameObject, typeof(GameObject), false) as GameObject;
renderer = gameObject.GetComponent <SkinnedMeshRenderer>();
if (GUILayout.Button("Export"))
{
if (clip != null && gameObject != null && renderer != null)
{
string fileName = EditorUtility.SaveFilePanel("Export .gtanimclip file", "", gameObject.name, "gtanimclip");
exportClip = BuildAnimClip();
if (exportClip == null)
{
Debug.Log("Export failed, no file has been written.");
return;
}
using (BinaryWriter writer = new BinaryWriter(File.Open(fileName, FileMode.Create)))
{
// magic number and version
writer.Write((UInt32)0xdeadbeef);
writer.Write((UInt32)1);
// clip name
string name = exportClip.name;
byte[] arr = System.Text.Encoding.UTF8.GetBytes(name);
writer.Write((UInt32)arr.Length);
for (int b = 0; b < arr.Length; ++b)
{
writer.Write(arr[b]);
}
{ // curves
writer.Write((UInt32)exportClip.curves.Count);
foreach (var curve in exportClip.curves)
{
writer.Write((UInt32)curve.boneIndex);
writer.Write((UInt32)curve.keys.Count);
foreach (var key in curve.keys)
{
writer.Write(key.time);
writer.Write(key.position.x);
writer.Write(key.position.y);
writer.Write(key.position.z);
writer.Write(key.rotation.x);
writer.Write(key.rotation.y);
writer.Write(key.rotation.z);
writer.Write(key.rotation.w);
}
Debug.Log("Exported curve for bone #" + curve.boneIndex + " with " + curve.keys.Count + " keyframes.");
}
}
Debug.Log("Exported anim '" + name + " (" + exportClip.curves.Count + " curves)");
}
}
}
if (exportClip != null)
{
//EditorGUILayout.LabelField("Clip: " + clip.name);
//EditorGUILayout.LabelField("Num affected bones: " + exportClip.curves.Count);
//for(int i = 0; i < exportClip.curves.Count; ++i)
//{
// EditorGUILayout.LabelField("Bone #" + exportClip.curves[i].boneIndex + " : " + exportClip.curves[i].keys.Count + " keyframes");
//}
}
}