86 lines
3.5 KiB
C++
86 lines
3.5 KiB
C++
// Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
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#pragma once
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#if COMPILE_WITH_PHYSICS_COOKING
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#include "Engine/Core/Types/DataContainer.h"
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#include "Engine/Physics/CollisionData.h"
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#include "Engine/Graphics/Models/ModelData.h"
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#include "Engine/Content/Assets/ModelBase.h"
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#include "Engine/Physics/PhysicsBackend.h"
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#define CONVEX_VERTEX_MIN 8
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#define CONVEX_VERTEX_MAX 255
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/// <summary>
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/// Physical collision data cooking tools. Allows to bake heightfield, convex and triangle mesh colliders data.
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/// </summary>
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class CollisionCooking
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{
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public:
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struct CookingInput
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{
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int32 VertexCount = 0;
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Float3* VertexData = nullptr;
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int32 IndexCount = 0;
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void* IndexData = nullptr;
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bool Is16bitIndexData = false;
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ConvexMeshGenerationFlags ConvexFlags = ConvexMeshGenerationFlags::None;
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int32 ConvexVertexLimit = 255;
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};
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/// <summary>
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/// Collision data cooking input argument format.
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/// </summary>
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struct Argument
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{
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CollisionDataType Type = CollisionDataType::None;
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ModelData* OverrideModelData = nullptr;
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AssetReference<ModelBase> Model;
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int32 ModelLodIndex = 0;
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uint32 MaterialSlotsMask = MAX_uint32;
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ConvexMeshGenerationFlags ConvexFlags = ConvexMeshGenerationFlags::None;
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int32 ConvexVertexLimit = 255;
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};
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/// <summary>
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/// Attempts to cook a convex mesh from the provided mesh data. Assumes the input data is valid and contains vertex
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/// positions. If the method returns false the resulting convex mesh will be in the output parameter.
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/// </summary>
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/// <param name="input">The input.</param>
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/// <param name="output">The output.</param>
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/// <returns>True if failed, otherwise false.</returns>
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static bool CookConvexMesh(CookingInput& input, BytesContainer& output);
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/// <summary>
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/// Attempts to cook a triangle mesh from the provided mesh data. Assumes the input data is valid and contains vertex
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/// positions as well as face indices. If the method returns false the resulting convex mesh will be in the output parameter.
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/// </summary>
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/// <param name="input">The input.</param>
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/// <param name="output">The output.</param>
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/// <returns>True if failed, otherwise false.</returns>
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static bool CookTriangleMesh(CookingInput& input, BytesContainer& output);
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/// <summary>
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/// Cooks a heightfield. The results are written to the stream. To create a heightfield object there is an option to precompute some of calculations done while loading the heightfield data.
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/// </summary>
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/// <param name="cols">The heightfield columns count.</param>
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/// <param name="rows">The heightfield rows count.</param>
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/// <param name="data">The heightfield data.</param>
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/// <param name="stream">The user stream to output the cooked data.</param>
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/// <returns>True if failed, otherwise false.</returns>
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static bool CookHeightField(int32 cols, int32 rows, const PhysicsBackend::HeightFieldSample* data, WriteStream& stream);
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/// <summary>
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/// Cooks the collision from the model and prepares the data for the <see cref="CollisionData"/> format.
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/// </summary>
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/// <param name="arg">The input argument descriptor.</param>
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/// <param name="outputOptions">The output options container.</param>
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/// <param name="outputData">The output data container.</param>
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/// <returns>True if failed, otherwise false.</returns>
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static bool CookCollision(const Argument& arg, CollisionData::SerializedOptions& outputOptions, BytesContainer& outputData);
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};
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#endif
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