void Camera::Render()
{
// Load the rotation and make radian vectors.
XMVECTOR rotationVector = XMLoadFloat3( &m_Rotation );
XMVECTOR radianVector = XMVectorReplicate( 0.0174532925f );
// Setup the vector that points upwards.
XMVECTOR upVector = XMVectorSet( 0.f, 1.f, 0.f, 0.f );
// Load the position into an XMVECTOR structure.
XMVECTOR positionVector = XMLoadFloat3(&m_Position);
// Setup where the camera is looking by default.
XMVECTOR lookAtVector = XMVectorSet( 0.f, 0.f, 1.f, 0.f );
// Create the rotation matrix from the product of the rotation vector and the radian vector.
// This converts the rotations to radians before creating the rotation matrix
XMMATRIX rotationMatrix = XMMatrixRotationRollPitchYawFromVector(rotationVector * radianVector);
// Transform the lookAt and up vector by the rotation matrix so the view is correctly
// rotated at the origin.
lookAtVector = XMVector3TransformCoord(lookAtVector, rotationMatrix);
upVector = XMVector3TransformCoord(upVector, rotationMatrix);
// Translate the rotated camera position to the location of the viewer.
lookAtVector = XMVectorAdd(positionVector, lookAtVector);
// Finally create the view matrix from the three updated vectors.
m_ViewMatrix = XMMatrixLookAtLH(positionVector, lookAtVector, upVector);
}
XMFLOAT4X4& ITransform::GetTransformMatrix()
{
XMMATRIX scl, rot, tsl;
scl = XMMatrixScalingFromVector(XMLoadFloat3(&m_vScale));
rot = XMMatrixRotationRollPitchYawFromVector(XMLoadFloat3(&m_vRotation));
tsl = XMMatrixTranslationFromVector(XMLoadFloat3(&m_vPosition));
// worldMat = S*R*T
XMStoreFloat4x4(&m_mTransform, (scl*rot*tsl));
return m_mTransform;
}
XMFLOAT4X4 gameObject::CalculateWorldMatrix()
{
XMMATRIX scale, rot, trans, world;
scale = XMMatrixScalingFromVector(XMLoadFloat3(&m_scaleVector));
rot = XMMatrixRotationRollPitchYawFromVector(XMLoadFloat3(&m_rotationVector));
trans = XMMatrixTranslationFromVector(XMLoadFloat3(&m_positionVector));
world = scale* rot* trans;
XMStoreFloat4x4(&m_matScale, scale);
XMStoreFloat4x4(&m_matRot, rot);
XMStoreFloat4x4(&m_matTranslation, trans);
XMStoreFloat4x4(&m_matTransform, world);
return m_matTransform;
}
