146 lines
3.5 KiB
C++
146 lines
3.5 KiB
C++
// Copyright (c) 2012-2021 Wojciech Figat. All rights reserved.
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#include "Decal.h"
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#include "Engine/Content/Assets/MaterialInstance.h"
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#include "Engine/Serialization/Serialization.h"
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#include "Engine/Renderer/RenderList.h"
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#include "Engine/Level/Scene/SceneRendering.h"
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#include "Engine/Graphics/RenderView.h"
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#include "Engine/Graphics/RenderTask.h"
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#include "Engine/Graphics/RenderTools.h"
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Decal::Decal(const SpawnParams& params)
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: Actor(params)
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, _size(100.0f)
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{
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_world = Matrix::Scaling(_size);
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_bounds.Extents = Vector3::Half;
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_bounds.Transformation = _world;
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_bounds.GetBoundingBox(_box);
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BoundingSphere::FromBox(_box, _sphere);
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}
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void Decal::SetSize(const Vector3& value)
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{
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const auto v = value.GetAbsolute();
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if (v != _size)
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{
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_size = v;
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Transform t = _transform;
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t.Scale *= _size;
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t.GetWorld(_world);
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_bounds.Extents = Vector3::Half;
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_bounds.Transformation = _world;
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_bounds.GetBoundingBox(_box);
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BoundingSphere::FromBox(_box, _sphere);
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}
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}
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MaterialInstance* Decal::CreateAndSetVirtualMaterialInstance()
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{
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auto material = Material.Get();
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CHECK_RETURN(material && !material->WaitForLoaded(), nullptr);
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const auto result = material->CreateVirtualInstance();
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Material = result;
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return result;
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}
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#if USE_EDITOR
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#include "Engine/Debug/DebugDraw.h"
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void Decal::OnDebugDrawSelected()
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{
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DEBUG_DRAW_WIRE_BOX(_bounds, Color::BlueViolet, 0, true);
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// Base
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Actor::OnDebugDrawSelected();
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}
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#endif
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void Decal::Draw(RenderContext& renderContext)
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{
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if ((renderContext.View.Flags & ViewFlags::Decals) != 0 &&
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Material &&
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Material->IsLoaded() &&
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Material->IsDecal())
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{
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const auto lodView = (renderContext.LodProxyView ? renderContext.LodProxyView : &renderContext.View);
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const float screenRadiusSquared = RenderTools::ComputeBoundsScreenRadiusSquared(_sphere.Center, _sphere.Radius, *lodView) * renderContext.View.ModelLODDistanceFactorSqrt;
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// Check if decal is being culled
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if (Math::Square(DrawMinScreenSize * 0.5f) > screenRadiusSquared)
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return;
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renderContext.List->Decals.Add(this);
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}
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}
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void Decal::Serialize(SerializeStream& stream, const void* otherObj)
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{
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// Base
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Actor::Serialize(stream, otherObj);
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SERIALIZE_GET_OTHER_OBJ(Decal);
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SERIALIZE(Material);
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SERIALIZE_MEMBER(Size, _size);
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SERIALIZE(SortOrder);
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SERIALIZE(DrawMinScreenSize);
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}
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void Decal::Deserialize(DeserializeStream& stream, ISerializeModifier* modifier)
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{
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// Base
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Actor::Deserialize(stream, modifier);
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DESERIALIZE(Material);
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DESERIALIZE_MEMBER(Size, _size);
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DESERIALIZE(SortOrder);
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DESERIALIZE(DrawMinScreenSize);
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}
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bool Decal::IntersectsItself(const Ray& ray, float& distance, Vector3& normal)
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{
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return _bounds.Intersects(ray, distance, normal);
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}
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void Decal::OnEnable()
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{
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GetSceneRendering()->AddCommon(this);
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#if USE_EDITOR
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GetSceneRendering()->AddViewportIcon(this);
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#endif
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// Base
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Actor::OnEnable();
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}
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void Decal::OnDisable()
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{
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#if USE_EDITOR
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GetSceneRendering()->RemoveViewportIcon(this);
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#endif
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GetSceneRendering()->RemoveCommon(this);
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// Base
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Actor::OnDisable();
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}
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void Decal::OnTransformChanged()
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{
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// Base
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Actor::OnTransformChanged();
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Transform t = _transform;
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t.Scale *= _size;
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t.GetWorld(_world);
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_bounds.Extents = Vector3::Half;
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_bounds.Transformation = _world;
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_bounds.GetBoundingBox(_box);
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BoundingSphere::FromBox(_box, _sphere);
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}
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