Program Listing for File animation.h

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#pragma once

#include "common/common.h"

struct TranslationKeyframe
{
    float m_Time;
    Vector3 m_Translation;
};

struct RotationKeyframe
{
    float m_Time;
    Quaternion m_Rotation;
};

struct ScalingKeyframe
{
    float m_Time;
    Vector3 m_Scaling;
};

struct SkeletonNode
{
    Vector<Ptr<SkeletonNode>> m_Children;
    String m_Name;
    Matrix m_LocalBindTransform;
};

class BoneAnimation
{
    Vector<TranslationKeyframe> m_Translation;
    Vector<RotationKeyframe> m_Rotation;
    Vector<ScalingKeyframe> m_Scaling;

    float getEndTime() const;
    float getStartTime() const;

public:
    BoneAnimation() = default;
    BoneAnimation(const BoneAnimation&) = default;
    ~BoneAnimation() = default;

    void addTranslationKeyframe(TranslationKeyframe& keyframe) { m_Translation.push_back(keyframe); }
    void addRotationKeyframe(RotationKeyframe& keyframe) { m_Rotation.push_back(keyframe); }
    void addScalingKeyframe(ScalingKeyframe& keyframe) { m_Scaling.push_back(keyframe); }

    Matrix interpolate(float time);
};

class SkeletalAnimation
{
    float m_Duration;
    HashMap<String, BoneAnimation> m_BoneAnimations;

public:
    SkeletalAnimation() = default;
    SkeletalAnimation(const SkeletalAnimation&) = default;
    ~SkeletalAnimation() = default;

    Matrix interpolate(const String& nodeName, float currentTime);

    float getStartTime() const;
    float getEndTime() const;

    void setDuration(float time) { m_Duration = time; }
    void addBoneAnimation(String boneName, BoneAnimation& boneAnimation) { m_BoneAnimations[boneName] = boneAnimation; }
};