hultonha
052ff90c9d
* preparatory work to allow for more viewport integration tests Signed-off-by: hultonha <hultonha@amazon.co.uk> * minor grammatical fix Signed-off-by: hultonha <hultonha@amazon.co.uk> * fix for missed bus call update Signed-off-by: hultonha <hultonha@amazon.co.uk>
104 lines
4.3 KiB
C++
104 lines
4.3 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project.
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* For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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#pragma once
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#include <AzCore/EBus/EBus.h>
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#include <AzCore/Component/EntityId.h>
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#include <AzFramework/Render/GeometryIntersectionStructures.h>
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#include <AzToolsFramework/ToolsComponents/EditorSelectionAccentSystemComponent.h>
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class CEntityObject;
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namespace AzFramework
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{
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struct ViewportInfo;
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}
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namespace AzToolsFramework
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{
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/// Bus for customizing Entity selection logic from within the EditorComponents.
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/// Used to provide with custom implementation for Ray intersection tests, specifying AABB, etc.
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class EditorComponentSelectionRequests
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: public AZ::ComponentBus
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{
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public:
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/// @brief Returns an AABB that encompasses the object.
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/// @return AABB that encompasses the object.
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/// @note ViewportInfo may be necessary if the all or part of the object
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/// stays at a constant size regardless of camera position.
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virtual AZ::Aabb GetEditorSelectionBoundsViewport(
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const AzFramework::ViewportInfo& /*viewportInfo*/)
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{
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AZ_Assert(!SupportsEditorRayIntersect(),
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"Component claims to support ray intersection but GetEditorSelectionBoundsViewport "
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"has not been implemented in the derived class");
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return AZ::Aabb::CreateNull();
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}
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/// @brief Returns true if editor selection ray intersects with the handler.
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/// @return True if the editor selection ray intersects the handler.
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/// @note ViewportInfo may be necessary if the all or part of the object
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/// stays at a constant size regardless of camera position.
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virtual bool EditorSelectionIntersectRayViewport(
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const AzFramework::ViewportInfo& /*viewportInfo*/,
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const AZ::Vector3& /*src*/, const AZ::Vector3& /*dir*/, float& /*distance*/)
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{
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AZ_Assert(!SupportsEditorRayIntersect(),
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"Component claims to support ray intersection but EditorSelectionIntersectRayViewport "
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"has not been implemented in the derived class");
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return false;
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}
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/// @brief Returns true if the component overrides EditorSelectionIntersectRay method,
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/// otherwise selection will be based only on AABB test.
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/// @return True if EditorSelectionIntersectRay method is implemented.
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virtual bool SupportsEditorRayIntersect() { return false; }
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protected:
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~EditorComponentSelectionRequests() = default;
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};
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/// Type to inherit to implement EditorComponentSelectionRequests.
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using EditorComponentSelectionRequestsBus = AZ::EBus<EditorComponentSelectionRequests>;
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/// Bus that provides notifications about selection events of the parent Entity.
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class EditorComponentSelectionNotifications
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: public AZ::EBusTraits
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{
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public:
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// EBusTraits overrides
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static const AZ::EBusHandlerPolicy HandlerPolicy = AZ::EBusHandlerPolicy::Multiple;
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static const AZ::EBusAddressPolicy AddressPolicy = AZ::EBusAddressPolicy::ById;
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typedef AZ::EntityId BusIdType;
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/// @brief Notifies listeners about in-editor selection events (mouse hover, selected, etc.)
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virtual void OnAccentTypeChanged(EntityAccentType /*accent*/) {}
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protected:
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~EditorComponentSelectionNotifications() = default;
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};
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/// Type to inherit to implement EditorComponentSelectionNotifications.
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using EditorComponentSelectionNotificationsBus = AZ::EBus<EditorComponentSelectionNotifications>;
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/// Returns the union of all editor selection bounds on a given Entity.
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/// @note The returned Aabb is in world space.
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inline AZ::Aabb CalculateEditorEntitySelectionBounds(
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const AZ::EntityId entityId, const AzFramework::ViewportInfo& viewportInfo)
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{
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AZ::EBusReduceResult<AZ::Aabb, AzFramework::AabbUnionAggregator> aabbResult(AZ::Aabb::CreateNull());
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EditorComponentSelectionRequestsBus::EventResult(
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aabbResult, entityId, &EditorComponentSelectionRequestsBus::Events::GetEditorSelectionBoundsViewport, viewportInfo);
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return aabbResult.value;
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}
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} // namespace AzToolsFramework
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