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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| #include "../../include/SceneData/Bone.h" | ||
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| Prisma::Bone::Bone(const std::string& name, int ID, const aiNodeAnim* channel) | ||
| : | ||
| m_Name(name), | ||
| m_ID(ID), | ||
| m_LocalTransform(1.0f) | ||
| { | ||
| m_NumPositions = channel->mNumPositionKeys; | ||
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| for (int positionIndex = 0; positionIndex < m_NumPositions; ++positionIndex) | ||
| { | ||
| aiVector3D aiPosition = channel->mPositionKeys[positionIndex].mValue; | ||
| float timeStamp = channel->mPositionKeys[positionIndex].mTime; | ||
| KeyPosition data; | ||
| data.position = getVec(aiPosition); | ||
| data.timeStamp = timeStamp; | ||
| m_Positions.push_back(data); | ||
| } | ||
|
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| m_NumRotations = channel->mNumRotationKeys; | ||
| for (int rotationIndex = 0; rotationIndex < m_NumRotations; ++rotationIndex) | ||
| { | ||
| aiQuaternion aiOrientation = channel->mRotationKeys[rotationIndex].mValue; | ||
| float timeStamp = channel->mRotationKeys[rotationIndex].mTime; | ||
| KeyRotation data; | ||
| data.orientation = getQuat(aiOrientation); | ||
| data.timeStamp = timeStamp; | ||
| m_Rotations.push_back(data); | ||
| } | ||
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| m_NumScalings = channel->mNumScalingKeys; | ||
| for (int keyIndex = 0; keyIndex < m_NumScalings; ++keyIndex) | ||
| { | ||
| aiVector3D scale = channel->mScalingKeys[keyIndex].mValue; | ||
| float timeStamp = channel->mScalingKeys[keyIndex].mTime; | ||
| KeyScale data; | ||
| data.scale = getVec(scale); | ||
| data.timeStamp = timeStamp; | ||
| m_Scales.push_back(data); | ||
| } | ||
| } | ||
|
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||
| void Prisma::Bone::Update(float animationTime) | ||
| { | ||
| glm::mat4 translation = InterpolatePosition(animationTime); | ||
| glm::mat4 rotation = InterpolateRotation(animationTime); | ||
| glm::mat4 scale = InterpolateScaling(animationTime); | ||
| m_LocalTransform = translation * rotation * scale; | ||
| } | ||
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| glm::mat4 Prisma::Bone::GetLocalTransform() { return m_LocalTransform; } | ||
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| std::string Prisma::Bone::GetBoneName() const { return m_Name; } | ||
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| int Prisma::Bone::GetBoneID() { return m_ID; } | ||
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| int Prisma::Bone::GetPositionIndex(float animationTime) | ||
| { | ||
| for (int index = 0; index < m_NumPositions - 1; ++index) | ||
| { | ||
| if (animationTime < m_Positions[index + 1].timeStamp) | ||
| return index; | ||
| } | ||
| assert(0); | ||
| } | ||
|
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| int Prisma::Bone::GetRotationIndex(float animationTime) | ||
| { | ||
| for (int index = 0; index < m_NumRotations - 1; ++index) | ||
| { | ||
| if (animationTime < m_Rotations[index + 1].timeStamp) | ||
| return index; | ||
| } | ||
| assert(0); | ||
| } | ||
|
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||
| int Prisma::Bone::GetScaleIndex(float animationTime) | ||
| { | ||
| for (int index = 0; index < m_NumScalings - 1; ++index) | ||
| { | ||
| if (animationTime < m_Scales[index + 1].timeStamp) | ||
| return index; | ||
| } | ||
| assert(0); | ||
| } | ||
|
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| float Prisma::Bone::GetScaleFactor(float lastTimeStamp, float nextTimeStamp, float animationTime) | ||
| { | ||
| float scaleFactor = 0.0f; | ||
| float midWayLength = animationTime - lastTimeStamp; | ||
| float framesDiff = nextTimeStamp - lastTimeStamp; | ||
| scaleFactor = midWayLength / framesDiff; | ||
| return scaleFactor; | ||
| } | ||
|
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||
| glm::mat4 Prisma::Bone::InterpolatePosition(float animationTime) | ||
| { | ||
| if (1 == m_NumPositions) | ||
| return glm::translate(glm::mat4(1.0f), m_Positions[0].position); | ||
|
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| int p0Index = GetPositionIndex(animationTime); | ||
| int p1Index = p0Index + 1; | ||
| float scaleFactor = GetScaleFactor(m_Positions[p0Index].timeStamp, | ||
| m_Positions[p1Index].timeStamp, animationTime); | ||
| glm::vec3 finalPosition = glm::mix(m_Positions[p0Index].position, m_Positions[p1Index].position | ||
| , scaleFactor); | ||
| return glm::translate(glm::mat4(1.0f), finalPosition); | ||
| } | ||
|
|
||
| glm::mat4 Prisma::Bone::InterpolateRotation(float animationTime) | ||
| { | ||
| if (1 == m_NumRotations) | ||
| { | ||
| auto rotation = glm::normalize(m_Rotations[0].orientation); | ||
| return glm::toMat4(rotation); | ||
| } | ||
|
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||
| int p0Index = GetRotationIndex(animationTime); | ||
| int p1Index = p0Index + 1; | ||
| float scaleFactor = GetScaleFactor(m_Rotations[p0Index].timeStamp, | ||
| m_Rotations[p1Index].timeStamp, animationTime); | ||
| glm::quat finalRotation = glm::slerp(m_Rotations[p0Index].orientation, m_Rotations[p1Index].orientation | ||
| , scaleFactor); | ||
| finalRotation = glm::normalize(finalRotation); | ||
| return glm::toMat4(finalRotation); | ||
|
|
||
| } | ||
|
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| glm::mat4 Prisma::Bone::InterpolateScaling(float animationTime) | ||
| { | ||
| if (1 == m_NumScalings) | ||
| return glm::scale(glm::mat4(1.0f), m_Scales[0].scale); | ||
|
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| int p0Index = GetScaleIndex(animationTime); | ||
| int p1Index = p0Index + 1; | ||
| float scaleFactor = GetScaleFactor(m_Scales[p0Index].timeStamp, | ||
| m_Scales[p1Index].timeStamp, animationTime); | ||
| glm::vec3 finalScale = glm::mix(m_Scales[p0Index].scale, m_Scales[p1Index].scale | ||
| , scaleFactor); | ||
| return glm::scale(glm::mat4(1.0f), finalScale); | ||
| } |