125 lines
3.2 KiB
C++
125 lines
3.2 KiB
C++
// 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 <NDK/Components/CameraComponent.hpp>
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#include <NDK/Algorithm.hpp>
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#include <NDK/Components/NodeComponent.hpp>
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namespace Ndk
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{
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/*void CameraComponent::InvalidateNode()
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{
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NzNode::InvalidateNode();
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// Le frustum et la view matrix dépendent des paramètres du node, invalidons-les
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m_frustumUpdated = false;
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m_viewMatrixUpdated = false;
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}*/
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void CameraComponent::OnAttached()
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{
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InvalidateViewMatrix();
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}
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void CameraComponent::OnComponentAttached(BaseComponent& component)
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{
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if (IsComponent<NodeComponent>(component))
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InvalidateViewMatrix();
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}
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void CameraComponent::OnComponentDetached(BaseComponent& component)
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{
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if (IsComponent<NodeComponent>(component))
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InvalidateViewMatrix();
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}
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void CameraComponent::OnDetached()
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{
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InvalidateViewMatrix();
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}
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void CameraComponent::OnRenderTargetReleased(const NzRenderTarget* renderTarget, void* userdata)
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{
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NazaraUnused(userdata);
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if (renderTarget == m_target)
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m_target = nullptr;
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else
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NazaraInternalError("Not listening to " + NzString::Pointer(renderTarget));
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}
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bool CameraComponent::OnRenderTargetSizeChange(const NzRenderTarget* renderTarget, void* userdata)
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{
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NazaraUnused(userdata);
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if (renderTarget == m_target)
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{
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InvalidateViewport();
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return true;
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}
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else
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{
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NazaraInternalError("Not listening to " + NzString::Pointer(renderTarget));
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return false;
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}
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}
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void CameraComponent::UpdateFrustum() const
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{
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EnsureProjectionMatrixUpdate();
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EnsureViewMatrixUpdate();
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m_frustum.Extract(m_viewMatrix, m_projectionMatrix);
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m_frustumUpdated = true;
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}
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void CameraComponent::UpdateProjectionMatrix() const
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{
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EnsureViewportUpdate(); // Peut affecter l'aspect ratio
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m_projectionMatrix.MakePerspective(m_fov, m_aspectRatio, m_zNear, m_zFar);
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m_projectionMatrixUpdated = true;
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}
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void CameraComponent::UpdateViewMatrix() const
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{
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NazaraAssert(m_entity && m_entity->HasComponent<NodeComponent>(), "CameraComponent requires NodeComponent");
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NodeComponent& nodeComponent = m_entity->GetComponent<NodeComponent>();
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m_viewMatrix.MakeViewMatrix(nodeComponent.GetPosition(nzCoordSys_Global), nodeComponent.GetRotation(nzCoordSys_Global));
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m_viewMatrixUpdated = true;
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}
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void CameraComponent::UpdateViewport() const
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{
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NazaraAssert(m_target, "CameraComponent has no target");
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unsigned int targetWidth = m_target->GetWidth();
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unsigned int targetHeight = std::max(m_target->GetHeight(), 1U); // Pour éviter une division par zéro
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// La zone visée est définie en "pourcentage" (0...1), on calcule les valeurs en pixel
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NzRectf fViewport(m_targetRegion);
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fViewport.x *= targetWidth;
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fViewport.y *= targetHeight;
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fViewport.width *= targetWidth;
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fViewport.height *= targetHeight;
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// On calcule le rapport largeur/hauteur, et s'il est différent on invalide
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float aspectRatio = fViewport.width/fViewport.height;
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if (!NzNumberEquals(m_aspectRatio, aspectRatio, 0.001f))
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{
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m_aspectRatio = aspectRatio;
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InvalidateProjectionMatrix();
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}
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m_viewport.Set(fViewport);
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m_viewportUpdated = true;
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}
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ComponentIndex CameraComponent::componentIndex;
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}
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