101 lines
2.5 KiB
C++
101 lines
2.5 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "MuT/Node.h"
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#include "MuR/Layout.h"
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#include "MuR/Image.h"
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#include "MuR/Ptr.h"
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#include "MuR/RefCounted.h"
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#include "HAL/Platform.h"
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#define UE_API MUTABLETOOLS_API
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namespace UE::Mutable::Private
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{
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class FMesh;
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/** Data for a layout block before it is compiled. */
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struct FSourceLayoutBlock
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{
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/** Optional mask image that selects the vertices to include in the block. */
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TSharedPtr<FImage> Mask;
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FIntVector2 Min = { 0, 0 };
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FIntVector2 Size = { 0, 0 };
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//! Priority value to control the shrink texture layout strategy
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int32 Priority = 0;
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//! Value to control the method to reduce the block
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uint32 bReduceBothAxes : 1 = 0;
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//! Value to control if a block has to be reduced by two in an unitary reduction strategy
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uint32 bReduceByTwo : 1 = 0;
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};
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/** This node is used to define the texture layout for a texture coordinates channel of a mesh. */
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class NodeLayout : public Node
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{
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public:
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//!
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FIntVector2 Size = FIntVector2(0, 0);
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/** Maximum size in layout blocks that this layout can grow to. From there on, blocks will shrink to fit.
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* If 0,0 then no maximum size applies.
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*/
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FIntVector2 MaxSize = FIntVector2(0, 0);
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//!
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EAutoBlocksStrategy AutoBlockStrategy = EAutoBlocksStrategy::Rectangles;
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TArray<FSourceLayoutBlock> Blocks;
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//! Packing strategy
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EPackStrategy Strategy = EPackStrategy::Resizeable;
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EReductionMethod ReductionMethod = EReductionMethod::Halve;
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/** When compiling, ignore generated warnings from this LOD on.
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* -1 means all warnings are generated.
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*/
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int32 FirstLODToIgnoreWarnings = 0;
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int32 TexCoordsIndex = INDEX_NONE;
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bool bMergeChildBlocks = false;
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public:
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// Node Interface
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virtual const FNodeType* GetType() const override { return GetStaticType(); }
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static const FNodeType* GetStaticType() { return &StaticType; }
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// Own interface
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/** */
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TSharedPtr<FLayout> BuildRuntimeLayout(uint32 BlockIDPrefix) const;
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/** Generate the blocks of a layout using the UV of the meshes.
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* A list of existing blocks may be provided to specify starting blocks that shouldn't be modified unless it is mandatory because they contain partial face islands.
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*/
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UE_API void GenerateLayoutBlocks(const TSharedPtr<FMesh>&, int32 LayoutIndex );
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UE_API void GenerateLayoutBlocksFromUVIslands(const TSharedPtr<FMesh>&, int32 LayoutIndex);
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protected:
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/** Forbidden. Manage with the Ptr<> template. */
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~NodeLayout() {}
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private:
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static UE_API FNodeType StaticType;
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};
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}
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#undef UE_API
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