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o3de/Gems/StartingPointCamera/Code/Source/CameraTransformBehaviors/OffsetCameraPosition.cpp

44 lines
2.1 KiB
C++

/*
* Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
*
* SPDX-License-Identifier: Apache-2.0 OR MIT
*
*/
#include "OffsetCameraPosition.h"
#include <AzCore/Serialization/SerializeContext.h>
#include <AzCore/Serialization/EditContext.h>
namespace Camera
{
void OffsetCameraPosition::Reflect(AZ::ReflectContext* reflection)
{
AZ::SerializeContext* serializeContext = azrtti_cast<AZ::SerializeContext*>(reflection);
if (serializeContext)
{
serializeContext->Class<OffsetCameraPosition>()
->Version(1)
->Field("Offset", &OffsetCameraPosition::m_offset)
->Field("Is Offset Relative", &OffsetCameraPosition::m_isRelativeOffset);
AZ::EditContext* editContext = serializeContext->GetEditContext();
if (editContext)
{
editContext->Class<OffsetCameraPosition>("Offset Position", "Offset the Camera's position")
->ClassElement(AZ::Edit::ClassElements::EditorData, "")
->DataElement(0, &OffsetCameraPosition::m_offset, "Offset", "The displacement you wish to move the Camera by")
->Attribute(AZ::Edit::Attributes::Suffix, "m")
->DataElement(0, &OffsetCameraPosition::m_isRelativeOffset, "Is Offset Relative", "If yes then the displacement will occur from the perspective of the camera");
}
}
}
void OffsetCameraPosition::AdjustCameraTransform([[maybe_unused]] float deltaTime, [[maybe_unused]] const AZ::Transform& initialCameraTransform, const AZ::Transform& targetTransform, AZ::Transform& inOutCameraTransform)
{
AZ::Vector3 currentPosition = targetTransform.GetTranslation();
inOutCameraTransform.SetTranslation(AZ::Vector3::CreateZero());
AZ::Transform rotation = m_isRelativeOffset ? inOutCameraTransform : AZ::Transform::CreateIdentity();
inOutCameraTransform.SetTranslation(currentPosition + rotation.TransformPoint(m_offset));
}
} //namespace Camera