restructure more

ThirdParty/assimp/test/unit/utSplitLargeMeshes.cpp

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+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2025, assimp team
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+copyright notice, this list of conditions and the
+following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the
+following disclaimer in the documentation and/or other
+materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+contributors may be used to endorse or promote products
+derived from this software without specific prior
+written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+#include "UnitTestPCH.h"
+
+#include "PostProcessing/SplitLargeMeshes.h"
+#include <assimp/scene.h>
+
+using namespace std;
+using namespace Assimp;
+
+class SplitLargeMeshesTest : public ::testing::Test {
+public:
+    virtual void SetUp();
+    virtual void TearDown();
+
+protected:
+    SplitLargeMeshesProcess_Triangle *piProcessTriangle;
+    SplitLargeMeshesProcess_Vertex *piProcessVertex;
+};
+
+// ------------------------------------------------------------------------------------------------
+void SplitLargeMeshesTest::SetUp() {
+    // construct the processes
+    this->piProcessTriangle = new SplitLargeMeshesProcess_Triangle();
+    this->piProcessVertex = new SplitLargeMeshesProcess_Vertex();
+
+    this->piProcessTriangle->SetLimit(1000);
+    this->piProcessVertex->SetLimit(1000);
+}
+
+// ------------------------------------------------------------------------------------------------
+void SplitLargeMeshesTest::TearDown() {
+    delete this->piProcessTriangle;
+    delete this->piProcessVertex;
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(SplitLargeMeshesTest, testVertexSplit) {
+    std::vector<std::pair<aiMesh *, unsigned int>> avOut;
+
+    aiMesh *pcMesh1 = new aiMesh();
+    pcMesh1->mNumVertices = 2100; // quersumme: 3
+    pcMesh1->mVertices = new aiVector3D[pcMesh1->mNumVertices];
+    pcMesh1->mNormals = new aiVector3D[pcMesh1->mNumVertices];
+
+    pcMesh1->mNumFaces = pcMesh1->mNumVertices / 3;
+    pcMesh1->mFaces = new aiFace[pcMesh1->mNumFaces];
+
+    unsigned int qq = 0;
+    for (unsigned int i = 0; i < pcMesh1->mNumFaces; ++i) {
+        aiFace &face = pcMesh1->mFaces[i];
+        face.mNumIndices = 3;
+        face.mIndices = new unsigned int[3];
+        face.mIndices[0] = qq++;
+        face.mIndices[1] = qq++;
+        face.mIndices[2] = qq++;
+    }
+
+    int iOldFaceNum = (int)pcMesh1->mNumFaces;
+    piProcessVertex->SplitMesh(0, pcMesh1, avOut);
+
+    for (std::vector<std::pair<aiMesh *, unsigned int>>::const_iterator
+                    iter = avOut.begin(),
+                    end = avOut.end();
+            iter != end; ++iter) {
+        aiMesh *mesh = (*iter).first;
+        EXPECT_LT(mesh->mNumVertices, 1000U);
+        EXPECT_TRUE(nullptr != mesh->mNormals);
+        EXPECT_TRUE(nullptr != mesh->mVertices);
+
+        iOldFaceNum -= mesh->mNumFaces;
+        delete mesh;
+    }
+    EXPECT_EQ(0, iOldFaceNum);
+}
+
+// ------------------------------------------------------------------------------------------------
+TEST_F(SplitLargeMeshesTest, testTriangleSplit) {
+    std::vector<std::pair<aiMesh *, unsigned int>> avOut;
+
+    // generate many, many faces with randomized indices for
+    // the second mesh
+    aiMesh *pcMesh2 = new aiMesh();
+    pcMesh2->mNumVertices = 3000;
+    pcMesh2->mVertices = new aiVector3D[pcMesh2->mNumVertices];
+    pcMesh2->mNormals = new aiVector3D[pcMesh2->mNumVertices];
+
+    pcMesh2->mNumFaces = 10000;
+    pcMesh2->mFaces = new aiFace[pcMesh2->mNumFaces];
+
+    for (unsigned int i = 0; i < pcMesh2->mNumFaces; ++i) {
+        aiFace &face = pcMesh2->mFaces[i];
+        face.mNumIndices = 3;
+        face.mIndices = new unsigned int[3];
+        face.mIndices[0] = (unsigned int)((rand() / (float)RAND_MAX) * pcMesh2->mNumVertices);
+        face.mIndices[1] = (unsigned int)((rand() / (float)RAND_MAX) * pcMesh2->mNumVertices);
+        face.mIndices[2] = (unsigned int)((rand() / (float)RAND_MAX) * pcMesh2->mNumVertices);
+    }
+
+    // the number of faces shouldn't change
+    int iOldFaceNum = (int)pcMesh2->mNumFaces;
+    piProcessTriangle->SplitMesh(0, pcMesh2, avOut);
+
+    for (std::vector<std::pair<aiMesh *, unsigned int>>::const_iterator
+                    iter = avOut.begin(),
+                    end = avOut.end();
+            iter != end; ++iter) {
+        aiMesh *mesh = (*iter).first;
+        EXPECT_LT(mesh->mNumFaces, 1000U);
+        EXPECT_TRUE(nullptr != mesh->mNormals);
+        EXPECT_TRUE(nullptr != mesh->mVertices);
+
+        iOldFaceNum -= mesh->mNumFaces;
+        delete mesh;
+    }
+    EXPECT_EQ(0, iOldFaceNum);
+}