*

LifeGraphics/AnimationController.h

@@ -0,0 +1,118 @@
+#ifndef AnimationController_h__
+#define AnimationController_h__
+
+#include <map>
+#include <vector>
+#include "AnimationTrack.h"
+#include "Skeleton.h"
+#include "LString.h"
+namespace LifeGraphics
+{
+	class AnimationController
+	{
+	public:
+		float fadeSpeed;
+		std::map<String, AnimationTrack*> tracks;
+		int trackCount;
+		Skeleton* skeleton;
+		int lastId;
+		std::vector<AnimationTrack*> plainList;
+
+		void CrossFade(String name)
+		{
+			AnimationTrack* t = tracks[name];
+			t->Weight += fadeSpeed;
+			if (t->Weight > 1.0f) t->Weight = 1.0f;
+
+			for(std::map<String, AnimationTrack*>::iterator it = tracks.begin(); it != tracks.end(); it++)
+			{
+				AnimationTrack* t2 = it->second;
+				if (t2->Layer == t->Layer && t2->Name != t->Name)
+				{
+					t2->Weight -= fadeSpeed;
+					if (t2->Weight < 0) t2->Weight = 0;
+				}
+			}
+		}
+
+		AnimationController()
+			:fadeSpeed(1.0f/20.0f), trackCount(0),lastId(0)
+		{
+		}
+
+		void SetState(const String& stateName)
+		{
+		}
+		/// <summary>
+		/// Add animatrion track to the current animation controller.
+		/// </summary>
+		/// <param name="track">Animation track to add.</param>
+		void AddTrack(AnimationTrack* track)
+		{
+			track->ID = lastId++;
+			tracks[track->Name] = track;
+			trackCount++;
+		}
+
+		void SetTrackWeight(String track, float weight)
+		{
+			tracks[track]->Weight = weight;
+		}
+
+		void LerpTransform(BoneTransform* left, const BoneTransform* right, float amount, BoneTransform* result)
+		{
+			if (amount == 0)
+			{
+				result->Rotation = left->Rotation;
+				result->Translation = left->Translation;
+				result->boneId = left->boneId;
+				return;
+			}
+			else if (amount == 1.0f)
+			{
+				result->Rotation = right->Rotation;
+				result->Translation = right->Translation;
+				result->boneId = right->boneId;
+				return;
+			}
+
+			QuatLerp(left->Rotation, right->Rotation, amount, result->Rotation);
+			Vec3Lerp(left->Translation, right->Translation, amount, result->Translation);
+			result->boneId = left->boneId;
+		}
+
+		void AdvanceTime(float dt)
+		{
+			for(std::map<String, AnimationTrack*>::iterator it = tracks.begin(); it != tracks.end(); it++)
+			{
+				AnimationTrack* track = it->second;
+				track->AdvanceTime(dt);
+
+				const BoneTransform* transform = track->GetTransform();
+
+				for (int i = 0; i < skeleton->BonesCount; i++)
+				{
+					for (int j = 0; j < track->Frames[0].boneCount; j++)
+					{
+						if (transform[j].boneId == i)
+						{
+							Bone* bone = skeleton->GetBone(i);
+							BoneTransform lt = bone->LocalTransform;
+							LerpTransform(&lt, &transform[j], track->Weight, &bone->LocalTransform);
+						}
+					}
+				}
+			}
+
+			skeleton->UpdateTransform();
+		}
+		/// <summary>
+		/// Use to set up mesh into initial pose
+		/// </summary>
+		void Reset()
+		{
+			tracks[0]->Reset();
+		}
+	};
+}
+#endif // AnimationController_h__