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106 lines
3.6 KiB
C++
106 lines
3.6 KiB
C++
//
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//---------------------------------------------------------------------------
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//
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// Copyright(C) 2018 Kevin Caccamo
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// All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with this program. If not, see http://www.gnu.org/licenses/
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//
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//--------------------------------------------------------------------------
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//
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#ifndef __GL_MODELS_OBJ_H__
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#define __GL_MODELS_OBJ_H__
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#include "model.h"
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#include "sc_man.h"
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#include "tarray.h"
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#include "vectors.h"
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class FOBJModel : public FModel
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{
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private:
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const char *newSideSep = "$"; // OBJ side separator is /, which is parsed as a line comment by FScanner if two of them are next to each other.
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bool hasMissingNormals;
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bool hasSmoothGroups;
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enum class FaceElement
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{
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VertexIndex,
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UVIndex,
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VNormalIndex
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};
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struct OBJTriRef
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{
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unsigned int surf;
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unsigned int tri;
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OBJTriRef(): surf(0), tri(0) {}
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OBJTriRef(unsigned int surf, unsigned int tri): surf(surf), tri(tri) {}
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bool operator== (OBJTriRef other) { return surf == other.surf && tri == other.tri; }
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};
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struct OBJFaceSide
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{
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int vertref;
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int normref;
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int uvref;
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};
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struct OBJFace
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{
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unsigned int sideCount;
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unsigned int smoothGroup;
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OBJFaceSide sides[4];
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OBJFace(): sideCount(0), smoothGroup(0) {}
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};
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struct OBJSurface // 1 surface per 'usemtl'
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{
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unsigned int numTris; // Number of triangulated faces
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unsigned int numFaces; // Number of faces
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unsigned int vbStart; // First index in vertex buffer
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unsigned int faceStart; // Index of first face in faces array
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OBJFace* tris; // Triangles
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FTextureID skin;
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OBJSurface(FTextureID skin): numTris(0), numFaces(0), vbStart(0), faceStart(0), tris(nullptr), skin(skin) {}
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};
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TArray<FVector3> verts;
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TArray<FVector3> norms;
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TArray<FVector2> uvs;
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TArray<OBJFace> faces;
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TArray<OBJSurface> surfaces;
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FScanner sc;
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TArray<OBJTriRef>* vertFaces;
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int ResolveIndex(int origIndex, FaceElement el);
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template<typename T, size_t L> void ParseVector(TArray<T> &array);
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bool ParseFaceSide(const FString &side, OBJFace &face, int sidx);
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void ConstructSurfaceTris(OBJSurface &surf);
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void AddVertFaces();
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void TriangulateQuad(const OBJFace &quad, OBJFace *tris);
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FVector3 RealignVector(FVector3 vecToRealign);
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FVector2 FixUV(FVector2 vecToRealign);
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FVector3 CalculateNormalFlat(unsigned int surfIdx, unsigned int triIdx);
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FVector3 CalculateNormalFlat(OBJTriRef otr);
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FVector3 CalculateNormalSmooth(unsigned int vidx, unsigned int smoothGroup);
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public:
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FOBJModel(): hasMissingNormals(false), hasSmoothGroups(false), vertFaces(nullptr) {}
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~FOBJModel();
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bool Load(const char* fn, int lumpnum, const char* buffer, int length) override;
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int FindFrame(const char* name, bool nodefault) override;
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void RenderFrame(FModelRenderer* renderer, FGameTexture* skin, int frame, int frame2, double inter, int translation, const FTextureID* surfaceskinids, const TArray<VSMatrix>& boneData, int boneStartPosition) override;
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void BuildVertexBuffer(FModelRenderer* renderer) override;
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void AddSkins(uint8_t* hitlist, const FTextureID* surfaceskinids) override;
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};
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#endif
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