Merge branch 'master' into findDegeneratesOptimization

code/AMF/AMFImporter_Postprocess.cpp

@@ -1,978 +0,0 @@
-/*
----------------------------------------------------------------------------
-Open Asset Import Library (assimp)
----------------------------------------------------------------------------
-
-Copyright (c) 2006-2020, 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 AMFImporter_Postprocess.cpp
-/// \brief Convert built scenegraph and objects to Assimp scenegraph.
-/// \date 2016
-/// \author [email protected]
-
-#ifndef ASSIMP_BUILD_NO_AMF_IMPORTER
-
-#include "AMFImporter.hpp"
-
-// Header files, Assimp.
-#include <assimp/SceneCombiner.h>
-#include <assimp/StandardShapes.h>
-#include <assimp/StringUtils.h>
-
-// Header files, stdlib.
-#include <iterator>
-
-namespace Assimp
-{
-
-aiColor4D AMFImporter::SPP_Material::GetColor(const float /*pX*/, const float /*pY*/, const float /*pZ*/) const
-{
-    aiColor4D tcol;
-
-	// Check if stored data are supported.
-	if(!Composition.empty())
-	{
-		throw DeadlyImportError("IME. GetColor for composition");
-	}
-	else if(Color->Composed)
-	{
-		throw DeadlyImportError("IME. GetColor, composed color");
-	}
-	else
-	{
-		tcol = Color->Color;
-	}
-
-	// Check if default color must be used
-	if((tcol.r == 0) && (tcol.g == 0) && (tcol.b == 0) && (tcol.a == 0))
-	{
-		tcol.r = 0.5f;
-		tcol.g = 0.5f;
-		tcol.b = 0.5f;
-		tcol.a = 1;
-	}
-
-	return tcol;
-}
-
-void AMFImporter::PostprocessHelper_CreateMeshDataArray(const AMFMesh& pNodeElement, std::vector<aiVector3D>& pVertexCoordinateArray,
-														std::vector<AMFColor*>& pVertexColorArray) const
-{
-    AMFVertices* vn = nullptr;
-    size_t col_idx;
-
-	// All data stored in "vertices", search for it.
-	for(AMFNodeElementBase* ne_child: pNodeElement.Child)
-	{
-		if(ne_child->Type == AMFNodeElementBase::ENET_Vertices) vn = (AMFVertices*)ne_child;
-	}
-
-	// If "vertices" not found then no work for us.
-	if(vn == nullptr) return;
-
-	pVertexCoordinateArray.reserve(vn->Child.size());// all coordinates stored as child and we need to reserve space for future push_back's.
-	pVertexColorArray.resize(vn->Child.size());// colors count equal vertices count.
-	col_idx = 0;
-	// Inside vertices collect all data and place to arrays
-	for(AMFNodeElementBase* vn_child: vn->Child)
-	{
-		// vertices, colors
-		if(vn_child->Type == AMFNodeElementBase::ENET_Vertex)
-		{
-			// by default clear color for current vertex
-			pVertexColorArray[col_idx] = nullptr;
-
-			for(AMFNodeElementBase* vtx: vn_child->Child)
-			{
-				if(vtx->Type == AMFNodeElementBase::ENET_Coordinates)
-				{
-					pVertexCoordinateArray.push_back(((AMFCoordinates*)vtx)->Coordinate);
-
-					continue;
-				}
-
-				if(vtx->Type == AMFNodeElementBase::ENET_Color)
-				{
-					pVertexColorArray[col_idx] = (AMFColor*)vtx;
-
-					continue;
-				}
-			}// for(CAMFImporter_NodeElement* vtx: vn_child->Child)
-
-			col_idx++;
-		}// if(vn_child->Type == CAMFImporter_NodeElement::ENET_Vertex)
-	}// for(CAMFImporter_NodeElement* vn_child: vn->Child)
-}
-
-size_t AMFImporter::PostprocessHelper_GetTextureID_Or_Create(const std::string& pID_R, const std::string& pID_G, const std::string& pID_B,
-																const std::string& pID_A)
-{
-    size_t TextureConverted_Index;
-    std::string TextureConverted_ID;
-
-	// check input data
-	if(pID_R.empty() && pID_G.empty() && pID_B.empty() && pID_A.empty())
-		throw DeadlyImportError("PostprocessHelper_GetTextureID_Or_Create. At least one texture ID must be defined.");
-
-	// Create ID
-	TextureConverted_ID = pID_R + "_" + pID_G + "_" + pID_B + "_" + pID_A;
-	// Check if texture specified by set of IDs is converted already.
-	TextureConverted_Index = 0;
-	for(const SPP_Texture& tex_convd: mTexture_Converted)
-	{
-        if ( tex_convd.ID == TextureConverted_ID ) {
-            return TextureConverted_Index;
-        } else {
-            ++TextureConverted_Index;
-        }
-	}
-
-	//
-	// Converted texture not found, create it.
-	//
-	AMFTexture* src_texture[4]{nullptr};
-	std::vector<AMFTexture*> src_texture_4check;
-	SPP_Texture converted_texture;
-
-	{// find all specified source textures
-		AMFNodeElementBase* t_tex;
-
-		// R
-		if(!pID_R.empty())
-		{
-			if(!Find_NodeElement(pID_R, AMFNodeElementBase::ENET_Texture, &t_tex)) Throw_ID_NotFound(pID_R);
-
-			src_texture[0] = (AMFTexture*)t_tex;
-			src_texture_4check.push_back((AMFTexture*)t_tex);
-		}
-		else
-		{
-			src_texture[0] = nullptr;
-		}
-
-		// G
-		if(!pID_G.empty())
-		{
-			if(!Find_NodeElement(pID_G, AMFNodeElementBase::ENET_Texture, &t_tex)) Throw_ID_NotFound(pID_G);
-
-			src_texture[1] = (AMFTexture*)t_tex;
-			src_texture_4check.push_back((AMFTexture*)t_tex);
-		}
-		else
-		{
-			src_texture[1] = nullptr;
-		}
-
-		// B
-		if(!pID_B.empty())
-		{
-			if(!Find_NodeElement(pID_B, AMFNodeElementBase::ENET_Texture, &t_tex)) Throw_ID_NotFound(pID_B);
-
-			src_texture[2] = (AMFTexture*)t_tex;
-			src_texture_4check.push_back((AMFTexture*)t_tex);
-		}
-		else
-		{
-			src_texture[2] = nullptr;
-		}
-
-		// A
-		if(!pID_A.empty())
-		{
-			if(!Find_NodeElement(pID_A, AMFNodeElementBase::ENET_Texture, &t_tex)) Throw_ID_NotFound(pID_A);
-
-			src_texture[3] = (AMFTexture*)t_tex;
-			src_texture_4check.push_back((AMFTexture*)t_tex);
-		}
-		else
-		{
-			src_texture[3] = nullptr;
-		}
-	}// END: find all specified source textures
-
-	// check that all textures has same size
-	if(src_texture_4check.size() > 1)
-	{
-		for (size_t i = 0, i_e = (src_texture_4check.size() - 1); i < i_e; i++)
-		{
-			if((src_texture_4check[i]->Width != src_texture_4check[i + 1]->Width) || (src_texture_4check[i]->Height != src_texture_4check[i + 1]->Height) ||
-				(src_texture_4check[i]->Depth != src_texture_4check[i + 1]->Depth))
-			{
-				throw DeadlyImportError("PostprocessHelper_GetTextureID_Or_Create. Source texture must has the same size.");
-			}
-		}
-	}// if(src_texture_4check.size() > 1)
-
-	// set texture attributes
-	converted_texture.Width = src_texture_4check[0]->Width;
-	converted_texture.Height = src_texture_4check[0]->Height;
-	converted_texture.Depth = src_texture_4check[0]->Depth;
-	// if one of source texture is tiled then converted texture is tiled too.
-	converted_texture.Tiled = false;
-	for(uint8_t i = 0; i < src_texture_4check.size(); i++) converted_texture.Tiled |= src_texture_4check[i]->Tiled;
-
-	// Create format hint.
-	strcpy(converted_texture.FormatHint, "rgba0000");// copy initial string.
-	if(!pID_R.empty()) converted_texture.FormatHint[4] = '8';
-	if(!pID_G.empty()) converted_texture.FormatHint[5] = '8';
-	if(!pID_B.empty()) converted_texture.FormatHint[6] = '8';
-	if(!pID_A.empty()) converted_texture.FormatHint[7] = '8';
-
-	//
-	// Сopy data of textures.
-	//
-	size_t tex_size = 0;
-	size_t step = 0;
-	size_t off_g = 0;
-	size_t off_b = 0;
-
-	// Calculate size of the target array and rule how data will be copied.
-    if(!pID_R.empty() && nullptr != src_texture[ 0 ] ) {
-        tex_size += src_texture[0]->Data.size(); step++, off_g++, off_b++;
-    }
-    if(!pID_G.empty() && nullptr != src_texture[ 1 ] ) {
-        tex_size += src_texture[1]->Data.size(); step++, off_b++;
-    }
-    if(!pID_B.empty() && nullptr != src_texture[ 2 ] ) {
-        tex_size += src_texture[2]->Data.size(); step++;
-    }
-    if(!pID_A.empty() && nullptr != src_texture[ 3 ] ) {
-        tex_size += src_texture[3]->Data.size(); step++;
-    }
-
-    // Create target array.
-	converted_texture.Data = new uint8_t[tex_size];
-	// And copy data
-	auto CopyTextureData = [&](const std::string& pID, const size_t pOffset, const size_t pStep, const uint8_t pSrcTexNum) -> void
-	{
-		if(!pID.empty())
-		{
-			for(size_t idx_target = pOffset, idx_src = 0; idx_target < tex_size; idx_target += pStep, idx_src++) {
-				AMFTexture* tex = src_texture[pSrcTexNum];
-				ai_assert(tex);
-				converted_texture.Data[idx_target] = tex->Data.at(idx_src);
-			}
-		}
-	};// auto CopyTextureData = [&](const size_t pOffset, const size_t pStep, const uint8_t pSrcTexNum) -> void
-
-	CopyTextureData(pID_R, 0, step, 0);
-	CopyTextureData(pID_G, off_g, step, 1);
-	CopyTextureData(pID_B, off_b, step, 2);
-	CopyTextureData(pID_A, step - 1, step, 3);
-
-	// Store new converted texture ID
-	converted_texture.ID = TextureConverted_ID;
-	// Store new converted texture
-	mTexture_Converted.push_back(converted_texture);
-
-	return TextureConverted_Index;
-}
-
-void AMFImporter::PostprocessHelper_SplitFacesByTextureID(std::list<SComplexFace>& pInputList, std::list<std::list<SComplexFace> >& pOutputList_Separated)
-{
-    auto texmap_is_equal = [](const AMFTexMap* pTexMap1, const AMFTexMap* pTexMap2) -> bool
-    {
-	    if((pTexMap1 == nullptr) && (pTexMap2 == nullptr)) return true;
-	    if(pTexMap1 == nullptr) return false;
-	    if(pTexMap2 == nullptr) return false;
-
-	    if(pTexMap1->TextureID_R != pTexMap2->TextureID_R) return false;
-	    if(pTexMap1->TextureID_G != pTexMap2->TextureID_G) return false;
-	    if(pTexMap1->TextureID_B != pTexMap2->TextureID_B) return false;
-	    if(pTexMap1->TextureID_A != pTexMap2->TextureID_A) return false;
-
-	    return true;
-    };
-
-	pOutputList_Separated.clear();
-	if(pInputList.empty()) return;
-
-	do
-	{
-		SComplexFace face_start = pInputList.front();
-		std::list<SComplexFace> face_list_cur;
-
-		for(std::list<SComplexFace>::iterator it = pInputList.begin(), it_end = pInputList.end(); it != it_end;)
-		{
-			if(texmap_is_equal(face_start.TexMap, it->TexMap))
-			{
-				auto it_old = it;
-
-				++it;
-				face_list_cur.push_back(*it_old);
-				pInputList.erase(it_old);
-			}
-			else
-			{
-				++it;
-			}
-		}
-
-		if(!face_list_cur.empty()) pOutputList_Separated.push_back(face_list_cur);
-
-	} while(!pInputList.empty());
-}
-
-void AMFImporter::Postprocess_AddMetadata(const std::list<AMFMetadata*>& metadataList, aiNode& sceneNode) const
-{
-	if ( !metadataList.empty() )
-	{
-		if(sceneNode.mMetaData != nullptr) throw DeadlyImportError("Postprocess. MetaData member in node are not nullptr. Something went wrong.");
-
-		// copy collected metadata to output node.
-        sceneNode.mMetaData = aiMetadata::Alloc( static_cast<unsigned int>(metadataList.size()) );
-		size_t meta_idx( 0 );
-
-		for(const AMFMetadata& metadata: metadataList)
-		{
-			sceneNode.mMetaData->Set(static_cast<unsigned int>(meta_idx++), metadata.Type, aiString(metadata.Value));
-		}
-	}// if(!metadataList.empty())
-}
-
-void AMFImporter::Postprocess_BuildNodeAndObject(const AMFObject& pNodeElement, std::list<aiMesh*>& pMeshList, aiNode** pSceneNode)
-{
-AMFColor* object_color = nullptr;
-
-	// create new aiNode and set name as <object> has.
-	*pSceneNode = new aiNode;
-	(*pSceneNode)->mName = pNodeElement.ID;
-	// read mesh and color
-	for(const AMFNodeElementBase* ne_child: pNodeElement.Child)
-	{
-		std::vector<aiVector3D> vertex_arr;
-		std::vector<AMFColor*> color_arr;
-
-		// color for object
-		if(ne_child->Type == AMFNodeElementBase::ENET_Color) object_color = (AMFColor*)ne_child;
-
-		if(ne_child->Type == AMFNodeElementBase::ENET_Mesh)
-		{
-			// Create arrays from children of mesh: vertices.
-			PostprocessHelper_CreateMeshDataArray(*((AMFMesh*)ne_child), vertex_arr, color_arr);
-			// Use this arrays as a source when creating every aiMesh
-			Postprocess_BuildMeshSet(*((AMFMesh*)ne_child), vertex_arr, color_arr, object_color, pMeshList, **pSceneNode);
-		}
-	}// for(const CAMFImporter_NodeElement* ne_child: pNodeElement)
-}
-
-void AMFImporter::Postprocess_BuildMeshSet(const AMFMesh& pNodeElement, const std::vector<aiVector3D>& pVertexCoordinateArray,
-											const std::vector<AMFColor*>& pVertexColorArray,
-											const AMFColor* pObjectColor, std::list<aiMesh*>& pMeshList, aiNode& pSceneNode)
-{
-std::list<unsigned int> mesh_idx;
-
-	// all data stored in "volume", search for it.
-	for(const AMFNodeElementBase* ne_child: pNodeElement.Child)
-	{
-		const AMFColor* ne_volume_color = nullptr;
-		const SPP_Material* cur_mat = nullptr;
-
-		if(ne_child->Type == AMFNodeElementBase::ENET_Volume)
-		{
-			/******************* Get faces *******************/
-			const AMFVolume* ne_volume = reinterpret_cast<const AMFVolume*>(ne_child);
-
-			std::list<SComplexFace> complex_faces_list;// List of the faces of the volume.
-			std::list<std::list<SComplexFace> > complex_faces_toplist;// List of the face list for every mesh.
-
-			// check if volume use material
-			if(!ne_volume->MaterialID.empty())
-			{
-				if(!Find_ConvertedMaterial(ne_volume->MaterialID, &cur_mat)) Throw_ID_NotFound(ne_volume->MaterialID);
-			}
-
-			// inside "volume" collect all data and place to arrays or create new objects
-			for(const AMFNodeElementBase* ne_volume_child: ne_volume->Child)
-			{
-				// color for volume
-				if(ne_volume_child->Type == AMFNodeElementBase::ENET_Color)
-				{
-					ne_volume_color = reinterpret_cast<const AMFColor*>(ne_volume_child);
-				}
-				else if(ne_volume_child->Type == AMFNodeElementBase::ENET_Triangle)// triangles, triangles colors
-				{
-					const AMFTriangle& tri_al = *reinterpret_cast<const AMFTriangle*>(ne_volume_child);
-
-					SComplexFace complex_face;
-
-					// initialize pointers
-					complex_face.Color = nullptr;
-					complex_face.TexMap = nullptr;
-					// get data from triangle children: color, texture coordinates.
-					if(tri_al.Child.size())
-					{
-						for(const AMFNodeElementBase* ne_triangle_child: tri_al.Child)
-						{
-							if(ne_triangle_child->Type == AMFNodeElementBase::ENET_Color)
-								complex_face.Color = reinterpret_cast<const AMFColor*>(ne_triangle_child);
-							else if(ne_triangle_child->Type == AMFNodeElementBase::ENET_TexMap)
-								complex_face.TexMap = reinterpret_cast<const AMFTexMap*>(ne_triangle_child);
-						}
-					}// if(tri_al.Child.size())
-
-					// create new face and store it.
-					complex_face.Face.mNumIndices = 3;
-					complex_face.Face.mIndices = new unsigned int[3];
-					complex_face.Face.mIndices[0] = static_cast<unsigned int>(tri_al.V[0]);
-					complex_face.Face.mIndices[1] = static_cast<unsigned int>(tri_al.V[1]);
-					complex_face.Face.mIndices[2] = static_cast<unsigned int>(tri_al.V[2]);
-					complex_faces_list.push_back(complex_face);
-				}
-			}// for(const CAMFImporter_NodeElement* ne_volume_child: ne_volume->Child)
-
-			/**** Split faces list: one list per mesh ****/
-			PostprocessHelper_SplitFacesByTextureID(complex_faces_list, complex_faces_toplist);
-
-			/***** Create mesh for every faces list ******/
-			for(std::list<SComplexFace>& face_list_cur: complex_faces_toplist)
-			{
-				auto VertexIndex_GetMinimal = [](const std::list<SComplexFace>& pFaceList, const size_t* pBiggerThan) -> size_t
-				{
-					size_t rv;
-
-					if(pBiggerThan != nullptr)
-					{
-						bool found = false;
-
-						for(const SComplexFace& face: pFaceList)
-						{
-							for(size_t idx_vert = 0; idx_vert < face.Face.mNumIndices; idx_vert++)
-							{
-								if(face.Face.mIndices[idx_vert] > *pBiggerThan)
-								{
-									rv = face.Face.mIndices[idx_vert];
-									found = true;
-
-									break;
-								}
-							}
-
-							if(found) break;
-						}
-
-						if(!found) return *pBiggerThan;
-					}
-					else
-					{
-						rv = pFaceList.front().Face.mIndices[0];
-					}// if(pBiggerThan != nullptr) else
-
-					for(const SComplexFace& face: pFaceList)
-					{
-						for(size_t vi = 0; vi < face.Face.mNumIndices; vi++)
-						{
-							if(face.Face.mIndices[vi] < rv)
-							{
-								if(pBiggerThan != nullptr)
-								{
-									if(face.Face.mIndices[vi] > *pBiggerThan) rv = face.Face.mIndices[vi];
-								}
-								else
-								{
-									rv = face.Face.mIndices[vi];
-								}
-							}
-						}
-					}// for(const SComplexFace& face: pFaceList)
-
-					return rv;
-				};// auto VertexIndex_GetMinimal = [](const std::list<SComplexFace>& pFaceList, const size_t* pBiggerThan) -> size_t
-
-				auto VertexIndex_Replace = [](std::list<SComplexFace>& pFaceList, const size_t pIdx_From, const size_t pIdx_To) -> void
-				{
-					for(const SComplexFace& face: pFaceList)
-					{
-						for(size_t vi = 0; vi < face.Face.mNumIndices; vi++)
-						{
-							if(face.Face.mIndices[vi] == pIdx_From) face.Face.mIndices[vi] = static_cast<unsigned int>(pIdx_To);
-						}
-					}
-				};// auto VertexIndex_Replace = [](std::list<SComplexFace>& pFaceList, const size_t pIdx_From, const size_t pIdx_To) -> void
-
-				auto Vertex_CalculateColor = [&](const size_t pIdx) -> aiColor4D
-				{
-					// Color priorities(In descending order):
-					// 1. triangle color;
-					// 2. vertex color;
-					// 3. volume color;
-					// 4. object color;
-					// 5. material;
-					// 6. default - invisible coat.
-					//
-					// Fill vertices colors in color priority list above that's points from 1 to 6.
-					if((pIdx < pVertexColorArray.size()) && (pVertexColorArray[pIdx] != nullptr))// check for vertex color
-					{
-						if(pVertexColorArray[pIdx]->Composed)
-							throw DeadlyImportError("IME: vertex color composed");
-						else
-							return pVertexColorArray[pIdx]->Color;
-					}
-					else if(ne_volume_color != nullptr)// check for volume color
-					{
-						if(ne_volume_color->Composed)
-							throw DeadlyImportError("IME: volume color composed");
-						else
-							return ne_volume_color->Color;
-					}
-					else if(pObjectColor != nullptr)// check for object color
-					{
-						if(pObjectColor->Composed)
-							throw DeadlyImportError("IME: object color composed");
-						else
-							return pObjectColor->Color;
-					}
-					else if(cur_mat != nullptr)// check for material
-					{
-						return cur_mat->GetColor(pVertexCoordinateArray.at(pIdx).x, pVertexCoordinateArray.at(pIdx).y, pVertexCoordinateArray.at(pIdx).z);
-					}
-					else// set default color.
-					{
-						return {0, 0, 0, 0};
-					}// if((vi < pVertexColorArray.size()) && (pVertexColorArray[vi] != nullptr)) else
-
-				};// auto Vertex_CalculateColor = [&](const size_t pIdx) -> aiColor4D
-
-				aiMesh* tmesh = new aiMesh;
-
-				tmesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;// Only triangles is supported by AMF.
-				//
-				// set geometry and colors (vertices)
-				//
-				// copy faces/triangles
-				tmesh->mNumFaces = static_cast<unsigned int>(face_list_cur.size());
-				tmesh->mFaces = new aiFace[tmesh->mNumFaces];
-
-				// Create vertices list and optimize indices. Optimisation mean following.In AMF all volumes use one big list of vertices. And one volume
-				// can use only part of vertices list, for example: vertices list contain few thousands of vertices and volume use vertices 1, 3, 10.
-				// Do you need all this thousands of garbage? Of course no. So, optimisation step transformate sparse indices set to continuous.
-				size_t VertexCount_Max = tmesh->mNumFaces * 3;// 3 - triangles.
-				std::vector<aiVector3D> vert_arr, texcoord_arr;
-				std::vector<aiColor4D> col_arr;
-
-				vert_arr.reserve(VertexCount_Max * 2);// "* 2" - see below TODO.
-				col_arr.reserve(VertexCount_Max * 2);
-
-				{// fill arrays
-					size_t vert_idx_from, vert_idx_to;
-
-					// first iteration.
-					vert_idx_to = 0;
-					vert_idx_from = VertexIndex_GetMinimal(face_list_cur, nullptr);
-					vert_arr.push_back(pVertexCoordinateArray.at(vert_idx_from));
-					col_arr.push_back(Vertex_CalculateColor(vert_idx_from));
-					if(vert_idx_from != vert_idx_to) VertexIndex_Replace(face_list_cur, vert_idx_from, vert_idx_to);
-
-					// rest iterations
-					do
-					{
-						vert_idx_from = VertexIndex_GetMinimal(face_list_cur, &vert_idx_to);
-						if(vert_idx_from == vert_idx_to) break;// all indices are transferred,
-
-						vert_arr.push_back(pVertexCoordinateArray.at(vert_idx_from));
-						col_arr.push_back(Vertex_CalculateColor(vert_idx_from));
-						vert_idx_to++;
-						if(vert_idx_from != vert_idx_to) VertexIndex_Replace(face_list_cur, vert_idx_from, vert_idx_to);
-
-					} while(true);
-				}// fill arrays. END.
-
-				//
-				// check if triangle colors are used and create additional faces if needed.
-				//
-				for(const SComplexFace& face_cur: face_list_cur)
-				{
-					if(face_cur.Color != nullptr)
-					{
-						aiColor4D face_color;
-						size_t vert_idx_new = vert_arr.size();
-
-						if(face_cur.Color->Composed)
-							throw DeadlyImportError("IME: face color composed");
-						else
-							face_color = face_cur.Color->Color;
-
-						for(size_t idx_ind = 0; idx_ind < face_cur.Face.mNumIndices; idx_ind++)
-						{
-							vert_arr.push_back(vert_arr.at(face_cur.Face.mIndices[idx_ind]));
-							col_arr.push_back(face_color);
-							face_cur.Face.mIndices[idx_ind] = static_cast<unsigned int>(vert_idx_new++);
-						}
-					}// if(face_cur.Color != nullptr)
-				}// for(const SComplexFace& face_cur: face_list_cur)
-
-				//
-				// if texture is used then copy texture coordinates too.
-				//
-				if(face_list_cur.front().TexMap != nullptr)
-				{
-					size_t idx_vert_new = vert_arr.size();
-					///TODO: clean unused vertices. "* 2": in certain cases - mesh full of triangle colors - vert_arr will contain duplicated vertices for
-					/// colored triangles and initial vertices (for colored vertices) which in real became unused. This part need more thinking about
-					/// optimisation.
-					bool* idx_vert_used;
-
-					idx_vert_used = new bool[VertexCount_Max * 2];
-					for(size_t i = 0, i_e = VertexCount_Max * 2; i < i_e; i++) idx_vert_used[i] = false;
-
-					// This ID's will be used when set materials ID in scene.
-					tmesh->mMaterialIndex = static_cast<unsigned int>(PostprocessHelper_GetTextureID_Or_Create(face_list_cur.front().TexMap->TextureID_R,
-																						face_list_cur.front().TexMap->TextureID_G,
-																						face_list_cur.front().TexMap->TextureID_B,
-																						face_list_cur.front().TexMap->TextureID_A));
-					texcoord_arr.resize(VertexCount_Max * 2);
-					for(const SComplexFace& face_cur: face_list_cur)
-					{
-						for(size_t idx_ind = 0; idx_ind < face_cur.Face.mNumIndices; idx_ind++)
-						{
-							const size_t idx_vert = face_cur.Face.mIndices[idx_ind];
-
-							if(!idx_vert_used[idx_vert])
-							{
-								texcoord_arr.at(idx_vert) = face_cur.TexMap->TextureCoordinate[idx_ind];
-								idx_vert_used[idx_vert] = true;
-							}
-							else if(texcoord_arr.at(idx_vert) != face_cur.TexMap->TextureCoordinate[idx_ind])
-							{
-								// in that case one vertex is shared with many texture coordinates. We need to duplicate vertex with another texture
-								// coordinates.
-								vert_arr.push_back(vert_arr.at(idx_vert));
-								col_arr.push_back(col_arr.at(idx_vert));
-								texcoord_arr.at(idx_vert_new) = face_cur.TexMap->TextureCoordinate[idx_ind];
-								face_cur.Face.mIndices[idx_ind] = static_cast<unsigned int>(idx_vert_new++);
-							}
-						}// for(size_t idx_ind = 0; idx_ind < face_cur.Face.mNumIndices; idx_ind++)
-					}// for(const SComplexFace& face_cur: face_list_cur)
-
-					delete [] idx_vert_used;
-					// shrink array
-					texcoord_arr.resize(idx_vert_new);
-				}// if(face_list_cur.front().TexMap != nullptr)
-
-				//
-				// copy collected data to mesh
-				//
-				tmesh->mNumVertices = static_cast<unsigned int>(vert_arr.size());
-				tmesh->mVertices = new aiVector3D[tmesh->mNumVertices];
-				tmesh->mColors[0] = new aiColor4D[tmesh->mNumVertices];
-
-				memcpy(tmesh->mVertices, vert_arr.data(), tmesh->mNumVertices * sizeof(aiVector3D));
-				memcpy(tmesh->mColors[0], col_arr.data(), tmesh->mNumVertices * sizeof(aiColor4D));
-				if(texcoord_arr.size() > 0)
-				{
-					tmesh->mTextureCoords[0] = new aiVector3D[tmesh->mNumVertices];
-					memcpy(tmesh->mTextureCoords[0], texcoord_arr.data(), tmesh->mNumVertices * sizeof(aiVector3D));
-					tmesh->mNumUVComponents[0] = 2;// U and V stored in "x", "y" of aiVector3D.
-				}
-
-				size_t idx_face = 0;
-				for(const SComplexFace& face_cur: face_list_cur) tmesh->mFaces[idx_face++] = face_cur.Face;
-
-				// store new aiMesh
-				mesh_idx.push_back(static_cast<unsigned int>(pMeshList.size()));
-				pMeshList.push_back(tmesh);
-			}// for(const std::list<SComplexFace>& face_list_cur: complex_faces_toplist)
-		}// if(ne_child->Type == CAMFImporter_NodeElement::ENET_Volume)
-	}// for(const CAMFImporter_NodeElement* ne_child: pNodeElement.Child)
-
-	// if meshes was created then assign new indices with current aiNode
-	if(!mesh_idx.empty())
-	{
-		std::list<unsigned int>::const_iterator mit = mesh_idx.begin();
-
-		pSceneNode.mNumMeshes = static_cast<unsigned int>(mesh_idx.size());
-		pSceneNode.mMeshes = new unsigned int[pSceneNode.mNumMeshes];
-		for(size_t i = 0; i < pSceneNode.mNumMeshes; i++) pSceneNode.mMeshes[i] = *mit++;
-	}// if(mesh_idx.size() > 0)
-}
-
-void AMFImporter::Postprocess_BuildMaterial(const AMFMaterial& pMaterial)
-{
-SPP_Material new_mat;
-
-	new_mat.ID = pMaterial.ID;
-	for(const AMFNodeElementBase* mat_child: pMaterial.Child)
-	{
-		if(mat_child->Type == AMFNodeElementBase::ENET_Color)
-		{
-			new_mat.Color = (AMFColor*)mat_child;
-		}
-		else if(mat_child->Type == AMFNodeElementBase::ENET_Metadata)
-		{
-			new_mat.Metadata.push_back((AMFMetadata*)mat_child);
-		}
-	}// for(const CAMFImporter_NodeElement* mat_child; pMaterial.Child)
-
-	// place converted material to special list
-	mMaterial_Converted.push_back(new_mat);
-}
-
-void AMFImporter::Postprocess_BuildConstellation(AMFConstellation& pConstellation, std::list<aiNode*>& pNodeList) const
-{
-aiNode* con_node;
-std::list<aiNode*> ch_node;
-
-	// We will build next hierarchy:
-	// aiNode as parent (<constellation>) for set of nodes as a children
-	//  |- aiNode for transformation (<instance> -> <delta...>, <r...>) - aiNode for pointing to object ("objectid")
-	//  ...
-	//  \_ aiNode for transformation (<instance> -> <delta...>, <r...>) - aiNode for pointing to object ("objectid")
-	con_node = new aiNode;
-	con_node->mName = pConstellation.ID;
-	// Walk through children and search for instances of another objects, constellations.
-	for(const AMFNodeElementBase* ne: pConstellation.Child)
-	{
-		aiMatrix4x4 tmat;
-		aiNode* t_node;
-		aiNode* found_node;
-
-		if(ne->Type == AMFNodeElementBase::ENET_Metadata) continue;
-		if(ne->Type != AMFNodeElementBase::ENET_Instance) throw DeadlyImportError("Only <instance> nodes can be in <constellation>.");
-
-		// create alias for conveniance
-		AMFInstance& als = *((AMFInstance*)ne);
-		// find referenced object
-		if(!Find_ConvertedNode(als.ObjectID, pNodeList, &found_node)) Throw_ID_NotFound(als.ObjectID);
-
-		// create node for applying transformation
-		t_node = new aiNode;
-		t_node->mParent = con_node;
-		// apply transformation
-		aiMatrix4x4::Translation(als.Delta, tmat), t_node->mTransformation *= tmat;
-		aiMatrix4x4::RotationX(als.Rotation.x, tmat), t_node->mTransformation *= tmat;
-		aiMatrix4x4::RotationY(als.Rotation.y, tmat), t_node->mTransformation *= tmat;
-		aiMatrix4x4::RotationZ(als.Rotation.z, tmat), t_node->mTransformation *= tmat;
-		// create array for one child node
-		t_node->mNumChildren = 1;
-		t_node->mChildren = new aiNode*[t_node->mNumChildren];
-		SceneCombiner::Copy(&t_node->mChildren[0], found_node);
-		t_node->mChildren[0]->mParent = t_node;
-		ch_node.push_back(t_node);
-	}// for(const CAMFImporter_NodeElement* ne: pConstellation.Child)
-
-	// copy found aiNode's as children
-	if(ch_node.empty()) throw DeadlyImportError("<constellation> must have at least one <instance>.");
-
-	size_t ch_idx = 0;
-
-	con_node->mNumChildren = static_cast<unsigned int>(ch_node.size());
-	con_node->mChildren = new aiNode*[con_node->mNumChildren];
-	for(aiNode* node: ch_node) con_node->mChildren[ch_idx++] = node;
-
-	// and place "root" of <constellation> node to node list
-	pNodeList.push_back(con_node);
-}
-
-void AMFImporter::Postprocess_BuildScene(aiScene* pScene)
-{
-std::list<aiNode*> node_list;
-std::list<aiMesh*> mesh_list;
-std::list<AMFMetadata*> meta_list;
-
-	//
-	// Because for AMF "material" is just complex colors mixing so aiMaterial will not be used.
-	// For building aiScene we are must to do few steps:
-	// at first creating root node for aiScene.
-	pScene->mRootNode = new aiNode;
-	pScene->mRootNode->mParent = nullptr;
-	pScene->mFlags |= AI_SCENE_FLAGS_ALLOW_SHARED;
-	// search for root(<amf>) element
-	AMFNodeElementBase* root_el = nullptr;
-
-	for(AMFNodeElementBase* ne: mNodeElement_List)
-	{
-		if(ne->Type != AMFNodeElementBase::ENET_Root) continue;
-
-		root_el = ne;
-
-		break;
-	}// for(const CAMFImporter_NodeElement* ne: mNodeElement_List)
-
-	// Check if root element are found.
-	if(root_el == nullptr) throw DeadlyImportError("Root(<amf>) element not found.");
-
-	// after that walk through children of root and collect data. Five types of nodes can be placed at top level - in <amf>: <object>, <material>, <texture>,
-	// <constellation> and <metadata>. But at first we must read <material> and <texture> because they will be used in <object>. <metadata> can be read
-	// at any moment.
-	//
-	// 1. <material>
-	// 2. <texture> will be converted later when processing triangles list. \sa Postprocess_BuildMeshSet
-	for(const AMFNodeElementBase* root_child: root_el->Child)
-	{
-		if(root_child->Type == AMFNodeElementBase::ENET_Material) Postprocess_BuildMaterial(*((AMFMaterial*)root_child));
-	}
-
-	// After "appearance" nodes we must read <object> because it will be used in <constellation> -> <instance>.
-	//
-	// 3. <object>
-	for(const AMFNodeElementBase* root_child: root_el->Child)
-	{
-		if(root_child->Type == AMFNodeElementBase::ENET_Object)
-		{
-			aiNode* tnode = nullptr;
-
-			// for <object> mesh and node must be built: object ID assigned to aiNode name and will be used in future for <instance>
-			Postprocess_BuildNodeAndObject(*((AMFObject*)root_child), mesh_list, &tnode);
-			if(tnode != nullptr) node_list.push_back(tnode);
-
-		}
-	}// for(const CAMFImporter_NodeElement* root_child: root_el->Child)
-
-	// And finally read rest of nodes.
-	//
-	for(const AMFNodeElementBase* root_child: root_el->Child)
-	{
-		// 4. <constellation>
-		if(root_child->Type == AMFNodeElementBase::ENET_Constellation)
-		{
-			// <object> and <constellation> at top of self abstraction use aiNode. So we can use only aiNode list for creating new aiNode's.
-			Postprocess_BuildConstellation(*((AMFConstellation*)root_child), node_list);
-		}
-
-		// 5, <metadata>
-		if(root_child->Type == AMFNodeElementBase::ENET_Metadata) meta_list.push_back((AMFMetadata*)root_child);
-	}// for(const CAMFImporter_NodeElement* root_child: root_el->Child)
-
-	// at now we can add collected metadata to root node
-	Postprocess_AddMetadata(meta_list, *pScene->mRootNode);
-	//
-	// Check constellation children
-	//
-	// As said in specification:
-	// "When multiple objects and constellations are defined in a single file, only the top level objects and constellations are available for printing."
-	// What that means? For example: if some object is used in constellation then you must show only constellation but not original object.
-	// And at this step we are checking that relations.
-nl_clean_loop:
-
-	if(node_list.size() > 1)
-	{
-		// walk through all nodes
-		for(std::list<aiNode*>::iterator nl_it = node_list.begin(); nl_it != node_list.end(); ++nl_it)
-		{
-			// and try to find them in another top nodes.
-			std::list<aiNode*>::const_iterator next_it = nl_it;
-
-			++next_it;
-			for(; next_it != node_list.end(); ++next_it)
-			{
-				if((*next_it)->FindNode((*nl_it)->mName) != nullptr)
-				{
-					// if current top node(nl_it) found in another top node then erase it from node_list and restart search loop.
-					node_list.erase(nl_it);
-
-					goto nl_clean_loop;
-				}
-			}// for(; next_it != node_list.end(); next_it++)
-		}// for(std::list<aiNode*>::const_iterator nl_it = node_list.begin(); nl_it != node_list.end(); nl_it++)
-	}
-
-	//
-	// move created objects to aiScene
-	//
-	//
-	// Nodes
-	if(!node_list.empty())
-	{
-		std::list<aiNode*>::const_iterator nl_it = node_list.begin();
-
-		pScene->mRootNode->mNumChildren = static_cast<unsigned int>(node_list.size());
-		pScene->mRootNode->mChildren = new aiNode*[pScene->mRootNode->mNumChildren];
-		for(size_t i = 0; i < pScene->mRootNode->mNumChildren; i++)
-		{
-			// Objects and constellation that must be showed placed at top of hierarchy in <amf> node. So all aiNode's in node_list must have
-			// mRootNode only as parent.
-			(*nl_it)->mParent = pScene->mRootNode;
-			pScene->mRootNode->mChildren[i] = *nl_it++;
-		}
-	}// if(node_list.size() > 0)
-
-	//
-	// Meshes
-	if(!mesh_list.empty())
-	{
-		std::list<aiMesh*>::const_iterator ml_it = mesh_list.begin();
-
-		pScene->mNumMeshes = static_cast<unsigned int>(mesh_list.size());
-		pScene->mMeshes = new aiMesh*[pScene->mNumMeshes];
-		for(size_t i = 0; i < pScene->mNumMeshes; i++) pScene->mMeshes[i] = *ml_it++;
-	}// if(mesh_list.size() > 0)
-
-	//
-	// Textures
-	pScene->mNumTextures = static_cast<unsigned int>(mTexture_Converted.size());
-	if(pScene->mNumTextures > 0)
-	{
-		size_t idx;
-
-		idx = 0;
-		pScene->mTextures = new aiTexture*[pScene->mNumTextures];
-		for(const SPP_Texture& tex_convd: mTexture_Converted)
-		{
-			pScene->mTextures[idx] = new aiTexture;
-			pScene->mTextures[idx]->mWidth = static_cast<unsigned int>(tex_convd.Width);
-			pScene->mTextures[idx]->mHeight = static_cast<unsigned int>(tex_convd.Height);
-			pScene->mTextures[idx]->pcData = (aiTexel*)tex_convd.Data;
-			// texture format description.
-			strcpy(pScene->mTextures[idx]->achFormatHint, tex_convd.FormatHint);
-			idx++;
-		}// for(const SPP_Texture& tex_convd: mTexture_Converted)
-
-		// Create materials for embedded textures.
-		idx = 0;
-		pScene->mNumMaterials = static_cast<unsigned int>(mTexture_Converted.size());
-		pScene->mMaterials = new aiMaterial*[pScene->mNumMaterials];
-		for(const SPP_Texture& tex_convd: mTexture_Converted)
-		{
-			const aiString texture_id(AI_EMBEDDED_TEXNAME_PREFIX + to_string(idx));
-			const int mode = aiTextureOp_Multiply;
-			const int repeat = tex_convd.Tiled ? 1 : 0;
-
-			pScene->mMaterials[idx] = new aiMaterial;
-			pScene->mMaterials[idx]->AddProperty(&texture_id, AI_MATKEY_TEXTURE_DIFFUSE(0));
-			pScene->mMaterials[idx]->AddProperty(&mode, 1, AI_MATKEY_TEXOP_DIFFUSE(0));
-			pScene->mMaterials[idx]->AddProperty(&repeat, 1, AI_MATKEY_MAPPINGMODE_U_DIFFUSE(0));
-			pScene->mMaterials[idx]->AddProperty(&repeat, 1, AI_MATKEY_MAPPINGMODE_V_DIFFUSE(0));
-			idx++;
-		}
-	}// if(pScene->mNumTextures > 0)
-}// END: after that walk through children of root and collect data
-
-}// namespace Assimp
-
-#endif // !ASSIMP_BUILD_NO_AMF_IMPORTER

code/AssetLib/Obj/ObjFileMtlImporter.cpp

@@ -137,10 +137,14 @@ void ObjFileMtlImporter::load() {
             } break;
             case 'T': {
                 ++m_DataIt;
-                if (*m_DataIt == 'f') // Material transmission
-                {
+                // Material transmission color
+                if (*m_DataIt == 'f')  {
                     ++m_DataIt;
                     getColorRGBA(&m_pModel->m_pCurrentMaterial->transparent);
+                } else if (*m_DataIt == 'r')  {
+                    // Material transmission alpha value
+                    ++m_DataIt;
+                    getFloatValue(m_pModel->m_pCurrentMaterial->alpha);                    
                 }
                 m_DataIt = skipLine<DataArrayIt>(m_DataIt, m_DataItEnd, m_uiLine);
             } break;

code/Material/MaterialSystem.cpp

@@ -402,7 +402,7 @@ aiMaterial::~aiMaterial() {
 }
 
 // ------------------------------------------------------------------------------------------------
-aiString aiMaterial::GetName() {
+aiString aiMaterial::GetName() const {
     aiString name;
     Get(AI_MATKEY_NAME, name);
 

include/assimp/material.inl

@@ -5,8 +5,6 @@ Open Asset Import Library (assimp)
 
 Copyright (c) 2006-2020, assimp team
 
-
-
 All rights reserved.
 
 Redistribution and use of this software in source and binary forms,