Ndk: Added CameraComponent (WIP)
Former-commit-id: ae7be5448a1150b7beba10e03916e94df51ea3a0
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Lynix
93
SDK/include/NDK/Components/CameraComponent.hpp
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93
SDK/include/NDK/Components/CameraComponent.hpp
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// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
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#pragma once
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#ifndef NDK_COMPONENTS_CAMERACOMPONENT_HPP
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#define NDK_COMPONENTS_CAMERACOMPONENT_HPP
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#include <Nazara/Math/Frustum.hpp>
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#include <Nazara/Math/Matrix4.hpp>
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#include <Nazara/Math/Vector3.hpp>
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#include <Nazara/Renderer/RenderTarget.hpp>
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#include <NDK/Component.hpp>
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namespace Ndk
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{
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class Entity;
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class NDK_API CameraComponent : public Component<CameraComponent>, NzRenderTarget::Listener
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{
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public:
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CameraComponent();
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~CameraComponent();
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void EnsureFrustumUpdate() const;
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void EnsureProjectionMatrixUpdate() const;
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void EnsureViewMatrixUpdate() const;
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void EnsureViewportUpdate() const;
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float GetAspectRatio() const;
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NzVector3f GetEyePosition() const;
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NzVector3f GetForward() const;
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float GetFOV() const;
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const NzFrustumf& GetFrustum() const;
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unsigned int GetLayer() const;
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const NzMatrix4f& GetProjectionMatrix() const;
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const NzRenderTarget* GetTarget() const;
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const NzRectf& GetTargetRegion() const;
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const NzMatrix4f& GetViewMatrix() const;
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const NzRecti& GetViewport() const;
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float GetZFar() const;
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float GetZNear() const;
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void SetFOV(float fov);
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void SetLayer(unsigned int layer);
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void SetTarget(const NzRenderTarget* renderTarget);
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void SetTargetRegion(const NzRectf& region);
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void SetViewport(const NzRecti& viewport);
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void SetZFar(float zFar);
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void SetZNear(float zNear);
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static ComponentIndex componentIndex;
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private:
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void InvalidateFrustum() const;
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void InvalidateProjectionMatrix() const;
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void InvalidateViewMatrix() const;
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void InvalidateViewport() const;
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void OnAttached() override;
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void OnComponentAttached(BaseComponent& component) override;
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void OnComponentDetached(BaseComponent& component) override;
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void OnDetached() override;
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void OnRenderTargetReleased(const NzRenderTarget* renderTarget, void* userdata) override;
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bool OnRenderTargetSizeChange(const NzRenderTarget* renderTarget, void* userdata) override;
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void UpdateFrustum() const;
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void UpdateProjectionMatrix() const;
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void UpdateViewMatrix() const;
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void UpdateViewport() const;
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mutable NzFrustumf m_frustum;
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mutable NzMatrix4f m_projectionMatrix;
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mutable NzMatrix4f m_viewMatrix;
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NzRectf m_targetRegion;
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mutable NzRecti m_viewport;
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const NzRenderTarget* m_target;
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mutable bool m_frustumUpdated;
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mutable bool m_projectionMatrixUpdated;
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mutable bool m_viewMatrixUpdated;
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mutable bool m_viewportUpdated;
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mutable float m_aspectRatio;
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float m_fov;
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float m_zFar;
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float m_zNear;
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unsigned int m_layer;
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};
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}
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#include <NDK/Components/CameraComponent.inl>
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#endif // NDK_COMPONENTS_CAMERACOMPONENT_HPP
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186
SDK/include/NDK/Components/CameraComponent.inl
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186
SDK/include/NDK/Components/CameraComponent.inl
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@@ -0,0 +1,186 @@
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// Copyright (C) 2015 Jérôme Leclercq
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// This file is part of the "Nazara Development Kit"
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// For conditions of distribution and use, see copyright notice in Prerequesites.hpp
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#include <Nazara/Core/Error.hpp>
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namespace Ndk
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{
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inline CameraComponent::CameraComponent() :
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m_targetRegion(0.f, 0.f, 1.f, 1.f),
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m_target(nullptr),
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m_frustumUpdated(false),
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m_projectionMatrixUpdated(false),
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m_viewMatrixUpdated(false),
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m_viewportUpdated(false),
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m_aspectRatio(0.f),
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m_fov(70.f),
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m_zFar(100.f),
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m_zNear(1.f),
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m_layer(0)
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{
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}
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inline CameraComponent::~CameraComponent()
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{
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if (m_target)
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m_target->RemoveListener(this);
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}
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inline void CameraComponent::EnsureFrustumUpdate() const
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{
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if (!m_frustumUpdated)
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UpdateFrustum();
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}
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inline void CameraComponent::EnsureProjectionMatrixUpdate() const
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{
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if (!m_projectionMatrixUpdated)
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UpdateProjectionMatrix();
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}
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inline void CameraComponent::EnsureViewMatrixUpdate() const
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{
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if (!m_viewMatrixUpdated)
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UpdateViewMatrix();
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}
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inline void CameraComponent::EnsureViewportUpdate() const
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{
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if (!m_viewportUpdated)
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UpdateViewport();
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}
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inline float CameraComponent::GetAspectRatio() const
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{
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EnsureViewportUpdate();
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return m_aspectRatio;
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}
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inline float CameraComponent::GetFOV() const
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{
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return m_fov;
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}
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inline const NzFrustumf& CameraComponent::GetFrustum() const
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{
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EnsureFrustumUpdate();
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return m_frustum;
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}
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inline const NzMatrix4f& CameraComponent::GetProjectionMatrix() const
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{
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EnsureProjectionMatrixUpdate();
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return m_projectionMatrix;
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}
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inline const NzRenderTarget* CameraComponent::GetTarget() const
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{
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return m_target;
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}
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inline const NzRectf& CameraComponent::GetTargetRegion() const
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{
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return m_targetRegion;
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}
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inline const NzMatrix4f& CameraComponent::GetViewMatrix() const
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{
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EnsureViewMatrixUpdate();
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return m_viewMatrix;
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}
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inline const NzRecti& CameraComponent::GetViewport() const
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{
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EnsureViewportUpdate();
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return m_viewport;
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}
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inline float CameraComponent::GetZFar() const
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{
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return m_zFar;
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}
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inline float CameraComponent::GetZNear() const
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{
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return m_zNear;
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}
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inline void CameraComponent::SetFOV(float fov)
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{
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NazaraAssert(fov != 0.f, "FOV must be different from zero");
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m_fov = fov;
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InvalidateProjectionMatrix();
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}
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inline void CameraComponent::SetTarget(const NzRenderTarget* renderTarget)
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{
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if (m_target)
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m_target->RemoveListener(this);
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m_target = renderTarget;
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if (m_target)
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m_target->AddListener(this);
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}
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inline void CameraComponent::SetTargetRegion(const NzRectf& region)
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{
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m_targetRegion = region;
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InvalidateViewport();
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}
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inline void CameraComponent::SetViewport(const NzRecti& viewport)
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{
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NazaraAssert(m_target, "Component has no render target");
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// On calcule la région nécessaire pour produire ce viewport avec la taille actuelle de la cible
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float invWidth = 1.f/m_target->GetWidth();
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float invHeight = 1.f/m_target->GetHeight();
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SetTargetRegion(NzRectf(invWidth * viewport.x, invHeight * viewport.y, invWidth * viewport.width, invHeight * viewport.height));
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}
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inline void CameraComponent::SetZFar(float zFar)
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{
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m_zFar = zFar;
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InvalidateProjectionMatrix();
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}
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inline void CameraComponent::SetZNear(float zNear)
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{
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NazaraAssert(NzNumberEquals(zNear, 0.f), "zNear cannot be zero");
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m_zNear = zNear;
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InvalidateProjectionMatrix();
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}
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inline void CameraComponent::InvalidateFrustum() const
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{
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m_frustumUpdated = false;
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}
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inline void CameraComponent::InvalidateProjectionMatrix() const
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{
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m_frustumUpdated = false;
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m_projectionMatrixUpdated = false;
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}
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inline void CameraComponent::InvalidateViewMatrix() const
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{
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m_frustumUpdated = false;
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m_viewMatrixUpdated = false;
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}
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inline void CameraComponent::InvalidateViewport() const
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{
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m_frustumUpdated = false;
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m_projectionMatrixUpdated = false;
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m_viewportUpdated = false;
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}
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}
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