110 lines
3.6 KiB
C++
110 lines
3.6 KiB
C++
#pragma once
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#include "IViewportHostService.h"
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#include <XCEngine/Core/Math/Color.h>
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#include <XCEngine/Core/Math/Quaternion.h>
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#include <XCEngine/Core/Math/Vector2.h>
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#include <XCEngine/Core/Math/Vector3.h>
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#include <array>
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#include <cstdint>
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namespace XCEngine {
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namespace Components {
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class GameObject;
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} // namespace Components
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namespace Editor {
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class IUndoManager;
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enum class SceneViewportScaleGizmoHandle : uint8_t {
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None = 0,
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X,
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Y,
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Z,
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Uniform
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};
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struct SceneViewportScaleGizmoAxisHandleDrawData {
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SceneViewportScaleGizmoHandle handle = SceneViewportScaleGizmoHandle::None;
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Math::Vector2 start = Math::Vector2::Zero();
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Math::Vector2 end = Math::Vector2::Zero();
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Math::Vector2 capCenter = Math::Vector2::Zero();
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float capHalfSize = 0.0f;
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Math::Color color = Math::Color::White();
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bool visible = false;
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bool hovered = false;
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bool active = false;
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};
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struct SceneViewportScaleGizmoCenterHandleDrawData {
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Math::Vector2 center = Math::Vector2::Zero();
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float halfSize = 0.0f;
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Math::Color fillColor = Math::Color::White();
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Math::Color outlineColor = Math::Color::White();
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bool visible = false;
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bool hovered = false;
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bool active = false;
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};
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struct SceneViewportScaleGizmoDrawData {
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bool visible = false;
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std::array<SceneViewportScaleGizmoAxisHandleDrawData, 3> axisHandles = {};
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SceneViewportScaleGizmoCenterHandleDrawData centerHandle = {};
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};
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struct SceneViewportScaleGizmoContext {
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SceneViewportOverlayData overlay = {};
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Math::Vector2 viewportSize = Math::Vector2::Zero();
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Math::Vector2 mousePosition = Math::Vector2::Zero();
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Components::GameObject* selectedObject = nullptr;
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Math::Vector3 pivotWorldPosition = Math::Vector3::Zero();
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Math::Quaternion axisOrientation = Math::Quaternion::Identity();
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bool uniformOnly = false;
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};
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struct SceneViewportScaleGizmoHitResult {
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SceneViewportScaleGizmoHandle handle = SceneViewportScaleGizmoHandle::None;
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float distanceSq = Math::FLOAT_MAX;
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bool HasHit() const {
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return handle != SceneViewportScaleGizmoHandle::None;
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}
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};
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class SceneViewportScaleGizmo {
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public:
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void Update(const SceneViewportScaleGizmoContext& context);
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bool TryBeginDrag(const SceneViewportScaleGizmoContext& context, IUndoManager& undoManager);
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void UpdateDrag(const SceneViewportScaleGizmoContext& context);
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void EndDrag(IUndoManager& undoManager);
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void CancelDrag(IUndoManager* undoManager = nullptr);
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bool IsHoveringHandle() const;
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bool IsActive() const;
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uint64_t GetActiveEntityId() const;
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const SceneViewportScaleGizmoDrawData& GetDrawData() const;
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SceneViewportScaleGizmoHitResult EvaluateHit(const Math::Vector2& mousePosition) const;
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void SetHoveredHandle(SceneViewportScaleGizmoHandle handle);
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private:
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void BuildDrawData(const SceneViewportScaleGizmoContext& context);
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void RefreshHandleState();
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const SceneViewportScaleGizmoAxisHandleDrawData* FindAxisHandleDrawData(
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SceneViewportScaleGizmoHandle handle) const;
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SceneViewportScaleGizmoDrawData m_drawData = {};
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SceneViewportScaleGizmoHandle m_hoveredHandle = SceneViewportScaleGizmoHandle::None;
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SceneViewportScaleGizmoHandle m_activeHandle = SceneViewportScaleGizmoHandle::None;
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uint64_t m_activeEntityId = 0;
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Math::Vector3 m_dragStartLocalScale = Math::Vector3::Zero();
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Math::Vector3 m_dragCurrentVisualScale = Math::Vector3::One();
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Math::Vector2 m_dragStartMousePosition = Math::Vector2::Zero();
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Math::Vector2 m_activeScreenDirection = Math::Vector2::Zero();
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};
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} // namespace Editor
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} // namespace XCEngine
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