add assimp submodule

1 files changed, 307 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/PostProcessing/RemoveVCProcess.cpp b/src/mesh/assimp-master/code/PostProcessing/RemoveVCProcess.cpp
new file mode 100644
index 0000000..1107736
--- /dev/null
+++ b/src/mesh/assimp-master/code/PostProcessing/RemoveVCProcess.cpp
@@ -0,0 +1,307 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2022, 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.
+---------------------------------------------------------------------------
+*/
+/** @file Implementation of the post processing step to remove
+ *        any parts of the mesh structure from the imported data.
+*/
+
+#include "RemoveVCProcess.h"
+#include <assimp/postprocess.h>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+
+using namespace Assimp;
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+RemoveVCProcess::RemoveVCProcess() :
+        configDeleteFlags(), mScene() {}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+RemoveVCProcess::~RemoveVCProcess() {}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the processing step is present in the given flag field.
+bool RemoveVCProcess::IsActive(unsigned int pFlags) const {
+    return (pFlags & aiProcess_RemoveComponent) != 0;
+}
+
+// ------------------------------------------------------------------------------------------------
+// Small helper function to delete all elements in a T** array using delete
+template <typename T>
+inline void ArrayDelete(T **&in, unsigned int &num) {
+    for (unsigned int i = 0; i < num; ++i)
+        delete in[i];
+
+    delete[] in;
+    in = nullptr;
+    num = 0;
+}
+
+#if 0
+// ------------------------------------------------------------------------------------------------
+// Updates the node graph - removes all nodes which have the "remove" flag set and the
+// "don't remove" flag not set. Nodes with meshes are never deleted.
+bool UpdateNodeGraph(aiNode* node,std::list<aiNode*>& childsOfParent,bool root)
+{
+    bool b = false;
+
+    std::list<aiNode*> mine;
+    for (unsigned int i = 0; i < node->mNumChildren;++i)
+    {
+        if(UpdateNodeGraph(node->mChildren[i],mine,false))
+            b = true;
+    }
+
+    // somewhat tricky ... mNumMeshes must be originally 0 and MSB2 may not be set,
+    // so we can do a simple comparison against MSB here
+    if (!root && AI_RC_UINT_MSB == node->mNumMeshes )
+    {
+        // this node needs to be removed
+        if(node->mNumChildren)
+        {
+            childsOfParent.insert(childsOfParent.end(),mine.begin(),mine.end());
+
+            // set all children to nullptr to make sure they are not deleted when we delete ourself
+            for (unsigned int i = 0; i < node->mNumChildren;++i)
+                node->mChildren[i] = nullptr;
+        }
+        b = true;
+        delete node;
+    }
+    else
+    {
+        AI_RC_UNMASK(node->mNumMeshes);
+        childsOfParent.push_back(node);
+
+        if (b)
+        {
+            // reallocate the array of our children here
+            node->mNumChildren = (unsigned int)mine.size();
+            aiNode** const children = new aiNode*[mine.size()];
+            aiNode** ptr = children;
+
+            for (std::list<aiNode*>::iterator it = mine.begin(), end = mine.end();
+                 it != end; ++it)
+            {
+                *ptr++ = *it;
+            }
+            delete[] node->mChildren;
+            node->mChildren = children;
+            return false;
+        }
+    }
+    return b;
+}
+#endif
+
+// ------------------------------------------------------------------------------------------------
+// Executes the post processing step on the given imported data.
+void RemoveVCProcess::Execute(aiScene *pScene) {
+    ASSIMP_LOG_DEBUG("RemoveVCProcess begin");
+    bool bHas = false; //,bMasked = false;
+
+    mScene = pScene;
+
+    // handle animations
+    if (configDeleteFlags & aiComponent_ANIMATIONS) {
+
+        bHas = true;
+        ArrayDelete(pScene->mAnimations, pScene->mNumAnimations);
+    }
+
+    // handle textures
+    if (configDeleteFlags & aiComponent_TEXTURES) {
+        bHas = true;
+        ArrayDelete(pScene->mTextures, pScene->mNumTextures);
+    }
+
+    // handle materials
+    if (configDeleteFlags & aiComponent_MATERIALS && pScene->mNumMaterials) {
+        bHas = true;
+        for (unsigned int i = 1; i < pScene->mNumMaterials; ++i)
+            delete pScene->mMaterials[i];
+
+        pScene->mNumMaterials = 1;
+        aiMaterial *helper = (aiMaterial *)pScene->mMaterials[0];
+        ai_assert(nullptr != helper);
+        helper->Clear();
+
+        // gray
+        aiColor3D clr(0.6f, 0.6f, 0.6f);
+        helper->AddProperty(&clr, 1, AI_MATKEY_COLOR_DIFFUSE);
+
+        // add a small ambient color value
+        clr = aiColor3D(0.05f, 0.05f, 0.05f);
+        helper->AddProperty(&clr, 1, AI_MATKEY_COLOR_AMBIENT);
+
+        aiString s;
+        s.Set("Dummy_MaterialsRemoved");
+        helper->AddProperty(&s, AI_MATKEY_NAME);
+    }
+
+    // handle light sources
+    if (configDeleteFlags & aiComponent_LIGHTS) {
+        bHas = true;
+        ArrayDelete(pScene->mLights, pScene->mNumLights);
+    }
+
+    // handle camneras
+    if (configDeleteFlags & aiComponent_CAMERAS) {
+        bHas = true;
+        ArrayDelete(pScene->mCameras, pScene->mNumCameras);
+    }
+
+    // handle meshes
+    if (configDeleteFlags & aiComponent_MESHES) {
+        bHas = true;
+        ArrayDelete(pScene->mMeshes, pScene->mNumMeshes);
+    } else {
+        for (unsigned int a = 0; a < pScene->mNumMeshes; a++) {
+            if (ProcessMesh(pScene->mMeshes[a]))
+                bHas = true;
+        }
+    }
+
+    // now check whether the result is still a full scene
+    if (!pScene->mNumMeshes || !pScene->mNumMaterials) {
+        pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
+        ASSIMP_LOG_DEBUG("Setting AI_SCENE_FLAGS_INCOMPLETE flag");
+
+        // If we have no meshes anymore we should also clear another flag ...
+        if (!pScene->mNumMeshes)
+            pScene->mFlags &= ~AI_SCENE_FLAGS_NON_VERBOSE_FORMAT;
+    }
+
+    if (bHas) {
+        ASSIMP_LOG_INFO("RemoveVCProcess finished. Data structure cleanup has been done.");
+    } else {
+        ASSIMP_LOG_DEBUG("RemoveVCProcess finished. Nothing to be done ...");
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Setup configuration properties for the step
+void RemoveVCProcess::SetupProperties(const Importer *pImp) {
+    configDeleteFlags = pImp->GetPropertyInteger(AI_CONFIG_PP_RVC_FLAGS, 0x0);
+    if (!configDeleteFlags) {
+        ASSIMP_LOG_WARN("RemoveVCProcess: AI_CONFIG_PP_RVC_FLAGS is zero.");
+    }
+}
+
+// ------------------------------------------------------------------------------------------------
+// Executes the post processing step on the given imported data.
+bool RemoveVCProcess::ProcessMesh(aiMesh *pMesh) {
+    bool ret = false;
+
+    // if all materials have been deleted let the material
+    // index of the mesh point to the created default material
+    if (configDeleteFlags & aiComponent_MATERIALS)
+        pMesh->mMaterialIndex = 0;
+
+    // handle normals
+    if (configDeleteFlags & aiComponent_NORMALS && pMesh->mNormals) {
+        delete[] pMesh->mNormals;
+        pMesh->mNormals = nullptr;
+        ret = true;
+    }
+
+    // handle tangents and bitangents
+    if (configDeleteFlags & aiComponent_TANGENTS_AND_BITANGENTS && pMesh->mTangents) {
+        delete[] pMesh->mTangents;
+        pMesh->mTangents = nullptr;
+
+        delete[] pMesh->mBitangents;
+        pMesh->mBitangents = nullptr;
+        ret = true;
+    }
+
+    // handle texture coordinates
+    bool b = (0 != (configDeleteFlags & aiComponent_TEXCOORDS));
+    for (unsigned int i = 0, real = 0; real < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++real) {
+        if (!pMesh->mTextureCoords[i]) break;
+        if (configDeleteFlags & aiComponent_TEXCOORDSn(real) || b) {
+            delete[] pMesh->mTextureCoords[i];
+            pMesh->mTextureCoords[i] = nullptr;
+            ret = true;
+
+            if (!b) {
+                // collapse the rest of the array
+                for (unsigned int a = i + 1; a < AI_MAX_NUMBER_OF_TEXTURECOORDS; ++a)
+                    pMesh->mTextureCoords[a - 1] = pMesh->mTextureCoords[a];
+
+                pMesh->mTextureCoords[AI_MAX_NUMBER_OF_TEXTURECOORDS - 1] = nullptr;
+                continue;
+            }
+        }
+        ++i;
+    }
+
+    // handle vertex colors
+    b = (0 != (configDeleteFlags & aiComponent_COLORS));
+    for (unsigned int i = 0, real = 0; real < AI_MAX_NUMBER_OF_COLOR_SETS; ++real) {
+        if (!pMesh->mColors[i]) break;
+        if (configDeleteFlags & aiComponent_COLORSn(i) || b) {
+            delete[] pMesh->mColors[i];
+            pMesh->mColors[i] = nullptr;
+            ret = true;
+
+            if (!b) {
+                // collapse the rest of the array
+                for (unsigned int a = i + 1; a < AI_MAX_NUMBER_OF_COLOR_SETS; ++a)
+                    pMesh->mColors[a - 1] = pMesh->mColors[a];
+
+                pMesh->mColors[AI_MAX_NUMBER_OF_COLOR_SETS - 1] = nullptr;
+                continue;
+            }
+        }
+        ++i;
+    }
+
+    // handle bones
+    if (configDeleteFlags & aiComponent_BONEWEIGHTS && pMesh->mBones) {
+        ArrayDelete(pMesh->mBones, pMesh->mNumBones);
+        ret = true;
+    }
+    return ret;
+}