Merge more code together for meshes

Source/Engine/Content/Assets/SkinnedModel.h

@@ -4,9 +4,135 @@
 
 #include "ModelBase.h"
 #include "Engine/Core/Collections/Dictionary.h"
-#include "Engine/Graphics/Models/Config.h"
+#include "Engine/Graphics/Models/SkinnedMesh.h"
 #include "Engine/Graphics/Models/SkeletonData.h"
-#include "Engine/Graphics/Models/SkinnedModelLOD.h"
+
+/// <summary>
+/// Represents single Level Of Detail for the skinned model. Contains a collection of the meshes.
+/// </summary>
+API_CLASS(NoSpawn) class FLAXENGINE_API SkinnedModelLOD : public ScriptingObject
+{
+    DECLARE_SCRIPTING_TYPE_WITH_CONSTRUCTOR_IMPL(SkinnedModelLOD, ScriptingObject);
+    friend SkinnedModel;
+private:
+    SkinnedModel* _model = nullptr;
+    int32 _lodIndex = 0;
+
+public:
+    /// <summary>
+    /// The screen size to switch LODs. Bottom limit of the model screen size to render this LOD.
+    /// </summary>
+    API_FIELD() float ScreenSize = 1.0f;
+
+    /// <summary>
+    /// The meshes array.
+    /// </summary>
+    API_FIELD(ReadOnly) Array<SkinnedMesh> Meshes;
+
+    /// <summary>
+    /// Gets the model LOD index.
+    /// </summary>
+    API_PROPERTY() FORCE_INLINE int32 GetLODIndex() const
+    {
+        return _lodIndex;
+    }
+
+    /// <summary>
+    /// Determines whether any mesh has been initialized.
+    /// </summary>
+    bool HasAnyMeshInitialized() const;
+
+public:
+    /// <summary>
+    /// Determines if there is an intersection between the Model and a Ray in given world using given instance
+    /// </summary>
+    /// <param name="ray">The ray to test</param>
+    /// <param name="world">World to test</param>
+    /// <param name="distance">When the method completes, contains the distance of the intersection (if any valid).</param>
+    /// <param name="normal">When the method completes, contains the intersection surface normal vector (if any valid).</param>
+    /// <param name="mesh">Mesh, or null</param>
+    /// <returns>True whether the two objects intersected</returns>
+    bool Intersects(const Ray& ray, const Matrix& world, Real& distance, Vector3& normal, SkinnedMesh** mesh);
+
+    /// <summary>
+    /// Determines if there is an intersection between the Model and a Ray in given world using given instance
+    /// </summary>
+    /// <param name="ray">The ray to test</param>
+    /// <param name="transform">Instance transformation</param>
+    /// <param name="distance">When the method completes, contains the distance of the intersection (if any valid).</param>
+    /// <param name="normal">When the method completes, contains the intersection surface normal vector (if any valid).</param>
+    /// <param name="mesh">Mesh, or null</param>
+    /// <returns>True whether the two objects intersected</returns>
+    bool Intersects(const Ray& ray, const Transform& transform, Real& distance, Vector3& normal, SkinnedMesh** mesh);
+
+    /// <summary>
+    /// Get model bounding box in transformed world for given instance buffer
+    /// </summary>
+    /// <param name="world">World matrix</param>
+    /// <returns>Bounding box</returns>
+    BoundingBox GetBox(const Matrix& world) const;
+
+    /// <summary>
+    /// Get model bounding box in transformed world.
+    /// </summary>
+    /// <param name="transform">The instance transformation.</param>
+    /// <param name="deformation">The meshes deformation container (optional).</param>
+    /// <returns>Bounding box</returns>
+    BoundingBox GetBox(const Transform& transform, const MeshDeformation* deformation = nullptr) const;
+
+    /// <summary>
+    /// Get model bounding box in transformed world for given instance buffer for only one mesh
+    /// </summary>
+    /// <param name="world">World matrix</param>
+    /// <param name="meshIndex">esh index</param>
+    /// <returns>Bounding box</returns>
+    BoundingBox GetBox(const Matrix& world, int32 meshIndex) const;
+
+    /// <summary>
+    /// Gets the bounding box combined for all meshes in this model LOD.
+    /// </summary>
+    API_PROPERTY() BoundingBox GetBox() const;
+
+    /// <summary>
+    /// Draws the meshes. Binds vertex and index buffers and invokes the draw calls.
+    /// </summary>
+    /// <param name="context">The GPU context to draw with.</param>
+    FORCE_INLINE void Render(GPUContext* context)
+    {
+        for (int32 i = 0; i < Meshes.Count(); i++)
+        {
+            Meshes.Get()[i].Render(context);
+        }
+    }
+
+    /// <summary>
+    /// Draws all the meshes from the model LOD.
+    /// </summary>
+    /// <param name="renderContext">The rendering context.</param>
+    /// <param name="info">The packed drawing info data.</param>
+    /// <param name="lodDitherFactor">The LOD transition dither factor.</param>
+    FORCE_INLINE void Draw(const RenderContext& renderContext, const SkinnedMesh::DrawInfo& info, float lodDitherFactor) const
+    {
+        for (int32 i = 0; i < Meshes.Count(); i++)
+        {
+            Meshes.Get()[i].Draw(renderContext, info, lodDitherFactor);
+        }
+    }
+
+    /// <summary>
+    /// Draws all the meshes from the model LOD.
+    /// </summary>
+    /// <param name="renderContextBatch">The rendering context batch.</param>
+    /// <param name="info">The packed drawing info data.</param>
+    /// <param name="lodDitherFactor">The LOD transition dither factor.</param>
+    FORCE_INLINE void Draw(const RenderContextBatch& renderContextBatch, const SkinnedMesh::DrawInfo& info, float lodDitherFactor) const
+    {
+        for (int32 i = 0; i < Meshes.Count(); i++)
+        {
+            Meshes.Get()[i].Draw(renderContextBatch, info, lodDitherFactor);
+        }
+    }
+};
 
 /// <summary>
 /// Skinned model asset that contains model object made of meshes that can be rendered on the GPU using skeleton bones skinning.