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right/up/forward vectors

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This commit is contained in:
lightling 2022-02-13 12:46:26 -05:00
parent 14523a8f5c
commit 97ffe2efb5
Signed by: lightling
GPG key ID: 016F11E0AA296B67
2 changed files with 31 additions and 0 deletions
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24
Transform.cpp
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@ -38,6 +38,21 @@ DirectX::XMFLOAT4X4 Transform::GetWorldMatrixInverseTranspose()
return worldMatrixInverseTranspose;
}
DirectX::XMFLOAT3 Transform::GetRight()
{
return right;
}
DirectX::XMFLOAT3 Transform::GetUp()
{
return up;
}
DirectX::XMFLOAT3 Transform::GetForward()
{
return forward;
}
// XMVECTOR & XMStoreFloat compiles down to something faster than position += x,y,z because it happens all at once
void Transform::SetPosition(float _x, float _y, float _z)
@ -52,6 +67,7 @@ void Transform::SetRotation(float _pitch, float _yaw, float _roll)
XMVECTOR newRotation = XMVectorSet(_pitch, _yaw, _roll, 0);
XMStoreFloat3(&eulerAngles, newRotation);
worldMatrixChanged = true;
UpdateDirections();
}
void Transform::SetScale(float _x, float _y, float _z)
@ -84,6 +100,7 @@ void Transform::Rotate(float _pitch, float _yaw, float _roll)
XMVECTOR offset = XMVectorSet(_pitch, _yaw, _roll, 0);
XMStoreFloat3(&eulerAngles, newRotation + offset);
worldMatrixChanged = true;
UpdateDirections();
}
void Transform::Scale(float _x, float _y, float _z)
@ -103,3 +120,10 @@ void Transform::UpdateWorldMatrix()
XMStoreFloat4x4(&worldMatrix, matrixScale * matrixRotation * matrixPosition);
XMStoreFloat4x4(&worldMatrixInverseTranspose, XMMatrixInverse(0, XMMatrixTranspose(XMLoadFloat4x4(&worldMatrix))));
}
void Transform::UpdateDirections()
{
XMStoreFloat3(&right, XMVector3Rotate(XMVectorSet(1, 0, 0, 0), XMQuaternionRotationRollPitchYaw(eulerAngles.x, eulerAngles.y, eulerAngles.z)));
XMStoreFloat3(&up, XMVector3Rotate(XMVectorSet(0, 1, 0, 0), XMQuaternionRotationRollPitchYaw(eulerAngles.x, eulerAngles.y, eulerAngles.z)));
XMStoreFloat3(&forward, XMVector3Rotate(XMVectorSet(0, 0, 1, 0), XMQuaternionRotationRollPitchYaw(eulerAngles.x, eulerAngles.y, eulerAngles.z)));
}

7
Transform.h
View file

@ -13,6 +13,9 @@ public:
DirectX::XMFLOAT3 GetScale();
DirectX::XMFLOAT4X4 GetWorldMatrix();
DirectX::XMFLOAT4X4 GetWorldMatrixInverseTranspose();
DirectX::XMFLOAT3 GetRight();
DirectX::XMFLOAT3 GetUp();
DirectX::XMFLOAT3 GetForward();
void SetPosition(float _x, float _y, float _z);
void SetRotation(float _pitch, float _yaw, float _roll);
@ -30,6 +33,10 @@ private:
DirectX::XMFLOAT4X4 worldMatrix;
DirectX::XMFLOAT4X4 worldMatrixInverseTranspose;
bool worldMatrixChanged;
DirectX::XMFLOAT3 right;
DirectX::XMFLOAT3 up;
DirectX::XMFLOAT3 forward;
void UpdateWorldMatrix();
void UpdateDirections();
};