add assimp submodule

1 files changed, 502 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/Irr/IRRMeshLoader.cpp b/src/mesh/assimp-master/code/AssetLib/Irr/IRRMeshLoader.cpp
new file mode 100644
index 0000000..90b4d85
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/Irr/IRRMeshLoader.cpp
@@ -0,0 +1,502 @@
+/*
+---------------------------------------------------------------------------
+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 IrrMesh importer class */
+
+#ifndef ASSIMP_BUILD_NO_IRRMESH_IMPORTER
+
+#include "IRRMeshLoader.h"
+#include <assimp/ParsingUtils.h>
+#include <assimp/fast_atof.h>
+#include <assimp/importerdesc.h>
+#include <assimp/material.h>
+#include <assimp/mesh.h>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+#include <assimp/IOSystem.hpp>
+#include <memory>
+
+using namespace Assimp;
+
+static const aiImporterDesc desc = {
+	"Irrlicht Mesh Reader",
+	"",
+	"",
+	"http://irrlicht.sourceforge.net/",
+	aiImporterFlags_SupportTextFlavour,
+	0,
+	0,
+	0,
+	0,
+	"xml irrmesh"
+};
+
+// ------------------------------------------------------------------------------------------------
+// Constructor to be privately used by Importer
+IRRMeshImporter::IRRMeshImporter() :
+        BaseImporter(),
+        IrrlichtBase() {
+    // empty
+}
+
+// ------------------------------------------------------------------------------------------------
+// Destructor, private as well
+IRRMeshImporter::~IRRMeshImporter() {}
+
+// ------------------------------------------------------------------------------------------------
+// Returns whether the class can handle the format of the given file.
+bool IRRMeshImporter::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
+	/* NOTE: A simple check for the file extension is not enough
+	 * here. Irrmesh and irr are easy, but xml is too generic
+	 * and could be collada, too. So we need to open the file and
+	 * search for typical tokens.
+	 */
+	static const char *tokens[] = { "irrmesh" };
+	return SearchFileHeaderForToken(pIOHandler, pFile, tokens, AI_COUNT_OF(tokens));
+}
+
+// ------------------------------------------------------------------------------------------------
+// Get a list of all file extensions which are handled by this class
+const aiImporterDesc *IRRMeshImporter::GetInfo() const {
+	return &desc;
+}
+
+static void releaseMaterial(aiMaterial **mat) {
+	if (*mat != nullptr) {
+		delete *mat;
+		*mat = nullptr;
+	}
+}
+
+static void releaseMesh(aiMesh **mesh) {
+	if (*mesh != nullptr) {
+		delete *mesh;
+		*mesh = nullptr;
+	}
+}
+
+// ------------------------------------------------------------------------------------------------
+// Imports the given file into the given scene structure.
+void IRRMeshImporter::InternReadFile(const std::string &pFile,
+		aiScene *pScene, IOSystem *pIOHandler) {
+	std::unique_ptr<IOStream> file(pIOHandler->Open(pFile));
+
+	// Check whether we can read from the file
+	if (file.get() == NULL)
+        throw DeadlyImportError("Failed to open IRRMESH file ", pFile);
+
+	// Construct the irrXML parser
+	XmlParser parser;
+    if (!parser.parse( file.get() )) {
+        throw DeadlyImportError("XML parse error while loading IRRMESH file ", pFile);
+    }
+    XmlNode root = parser.getRootNode();
+
+	// final data
+	std::vector<aiMaterial *> materials;
+	std::vector<aiMesh *> meshes;
+	materials.reserve(5);
+	meshes.reserve(5);
+
+	// temporary data - current mesh buffer
+	aiMaterial *curMat = nullptr;
+	aiMesh *curMesh = nullptr;
+	unsigned int curMatFlags = 0;
+
+	std::vector<aiVector3D> curVertices, curNormals, curTangents, curBitangents;
+	std::vector<aiColor4D> curColors;
+	std::vector<aiVector3D> curUVs, curUV2s;
+
+	// some temporary variables
+	int textMeaning = 0;
+	int vertexFormat = 0; // 0 = normal; 1 = 2 tcoords, 2 = tangents
+	bool useColors = false;
+
+	// Parse the XML file
+	for (pugi::xml_node child : root.children()) {
+		if (child.type() == pugi::node_element) {
+			if (!ASSIMP_stricmp(child.name(), "buffer") && (curMat || curMesh)) {
+				// end of previous buffer. A material and a mesh should be there
+				if (!curMat || !curMesh) {
+					ASSIMP_LOG_ERROR("IRRMESH: A buffer must contain a mesh and a material");
+					releaseMaterial(&curMat);
+					releaseMesh(&curMesh);
+				} else {
+					materials.push_back(curMat);
+					meshes.push_back(curMesh);
+				}
+				curMat = nullptr;
+				curMesh = nullptr;
+
+				curVertices.clear();
+				curColors.clear();
+				curNormals.clear();
+				curUV2s.clear();
+				curUVs.clear();
+				curTangents.clear();
+				curBitangents.clear();
+			}
+
+			if (!ASSIMP_stricmp(child.name(), "material")) {
+				if (curMat) {
+					ASSIMP_LOG_WARN("IRRMESH: Only one material description per buffer, please");
+					releaseMaterial(&curMat);
+				}
+				curMat = ParseMaterial(curMatFlags);
+			}
+			/* no else here! */ if (!ASSIMP_stricmp(child.name(), "vertices")) {
+				pugi::xml_attribute attr = child.attribute("vertexCount");
+				int num = attr.as_int();
+                //int num = reader->getAttributeValueAsInt("vertexCount");
+
+				if (!num) {
+					// This is possible ... remove the mesh from the list and skip further reading
+					ASSIMP_LOG_WARN("IRRMESH: Found mesh with zero vertices");
+
+					releaseMaterial(&curMat);
+					releaseMesh(&curMesh);
+					textMeaning = 0;
+					continue;
+				}
+
+				curVertices.reserve(num);
+				curNormals.reserve(num);
+				curColors.reserve(num);
+				curUVs.reserve(num);
+
+				// Determine the file format
+				//const char *t = reader->getAttributeValueSafe("type");
+                pugi::xml_attribute t = child.attribute("type");
+				if (!ASSIMP_stricmp("2tcoords", t.name())) {
+					curUV2s.reserve(num);
+					vertexFormat = 1;
+
+					if (curMatFlags & AI_IRRMESH_EXTRA_2ND_TEXTURE) {
+						// *********************************************************
+						// We have a second texture! So use this UV channel
+						// for it. The 2nd texture can be either a normal
+						// texture (solid_2layer or lightmap_xxx) or a normal
+						// map (normal_..., parallax_...)
+						// *********************************************************
+						int idx = 1;
+						aiMaterial *mat = (aiMaterial *)curMat;
+
+						if (curMatFlags & AI_IRRMESH_MAT_lightmap) {
+							mat->AddProperty(&idx, 1, AI_MATKEY_UVWSRC_LIGHTMAP(0));
+						} else if (curMatFlags & AI_IRRMESH_MAT_normalmap_solid) {
+							mat->AddProperty(&idx, 1, AI_MATKEY_UVWSRC_NORMALS(0));
+						} else if (curMatFlags & AI_IRRMESH_MAT_solid_2layer) {
+							mat->AddProperty(&idx, 1, AI_MATKEY_UVWSRC_DIFFUSE(1));
+						}
+					}
+				} else if (!ASSIMP_stricmp("tangents", t.name())) {
+					curTangents.reserve(num);
+					curBitangents.reserve(num);
+					vertexFormat = 2;
+				} else if (ASSIMP_stricmp("standard", t.name())) {
+					releaseMaterial(&curMat);
+					ASSIMP_LOG_WARN("IRRMESH: Unknown vertex format");
+				} else
+					vertexFormat = 0;
+				textMeaning = 1;
+			} else if (!ASSIMP_stricmp(child.name(), "indices")) {
+				if (curVertices.empty() && curMat) {
+					releaseMaterial(&curMat);
+					throw DeadlyImportError("IRRMESH: indices must come after vertices");
+				}
+
+				textMeaning = 2;
+
+				// start a new mesh
+				curMesh = new aiMesh();
+
+				// allocate storage for all faces
+				pugi::xml_attribute attr = child.attribute("indexCount");
+				curMesh->mNumVertices = attr.as_int();
+				if (!curMesh->mNumVertices) {
+					// This is possible ... remove the mesh from the list and skip further reading
+					ASSIMP_LOG_WARN("IRRMESH: Found mesh with zero indices");
+
+					// mesh - away
+					releaseMesh(&curMesh);
+
+					// material - away
+					releaseMaterial(&curMat);
+
+					textMeaning = 0;
+					continue;
+				}
+
+				if (curMesh->mNumVertices % 3) {
+					ASSIMP_LOG_WARN("IRRMESH: Number if indices isn't divisible by 3");
+				}
+
+				curMesh->mNumFaces = curMesh->mNumVertices / 3;
+				curMesh->mFaces = new aiFace[curMesh->mNumFaces];
+
+				// setup some members
+				curMesh->mMaterialIndex = (unsigned int)materials.size();
+				curMesh->mPrimitiveTypes = aiPrimitiveType_TRIANGLE;
+
+				// allocate storage for all vertices
+				curMesh->mVertices = new aiVector3D[curMesh->mNumVertices];
+
+				if (curNormals.size() == curVertices.size()) {
+					curMesh->mNormals = new aiVector3D[curMesh->mNumVertices];
+				}
+				if (curTangents.size() == curVertices.size()) {
+					curMesh->mTangents = new aiVector3D[curMesh->mNumVertices];
+				}
+				if (curBitangents.size() == curVertices.size()) {
+					curMesh->mBitangents = new aiVector3D[curMesh->mNumVertices];
+				}
+				if (curColors.size() == curVertices.size() && useColors) {
+					curMesh->mColors[0] = new aiColor4D[curMesh->mNumVertices];
+				}
+				if (curUVs.size() == curVertices.size()) {
+					curMesh->mTextureCoords[0] = new aiVector3D[curMesh->mNumVertices];
+				}
+				if (curUV2s.size() == curVertices.size()) {
+					curMesh->mTextureCoords[1] = new aiVector3D[curMesh->mNumVertices];
+				}
+			}
+			//break;
+
+			//case EXN_TEXT: {
+			const char *sz = child.child_value();
+			if (textMeaning == 1) {
+				textMeaning = 0;
+
+				// read vertices
+				do {
+					SkipSpacesAndLineEnd(&sz);
+					aiVector3D temp;
+					aiColor4D c;
+
+					// Read the vertex position
+					sz = fast_atoreal_move<float>(sz, (float &)temp.x);
+					SkipSpaces(&sz);
+
+					sz = fast_atoreal_move<float>(sz, (float &)temp.y);
+					SkipSpaces(&sz);
+
+					sz = fast_atoreal_move<float>(sz, (float &)temp.z);
+					SkipSpaces(&sz);
+					curVertices.push_back(temp);
+
+					// Read the vertex normals
+					sz = fast_atoreal_move<float>(sz, (float &)temp.x);
+					SkipSpaces(&sz);
+
+					sz = fast_atoreal_move<float>(sz, (float &)temp.y);
+					SkipSpaces(&sz);
+
+					sz = fast_atoreal_move<float>(sz, (float &)temp.z);
+					SkipSpaces(&sz);
+					curNormals.push_back(temp);
+
+					// read the vertex colors
+					uint32_t clr = strtoul16(sz, &sz);
+					ColorFromARGBPacked(clr, c);
+
+					if (!curColors.empty() && c != *(curColors.end() - 1))
+						useColors = true;
+
+					curColors.push_back(c);
+					SkipSpaces(&sz);
+
+					// read the first UV coordinate set
+					sz = fast_atoreal_move<float>(sz, (float &)temp.x);
+					SkipSpaces(&sz);
+
+					sz = fast_atoreal_move<float>(sz, (float &)temp.y);
+					SkipSpaces(&sz);
+					temp.z = 0.f;
+					temp.y = 1.f - temp.y; // DX to OGL
+					curUVs.push_back(temp);
+
+					// read the (optional) second UV coordinate set
+					if (vertexFormat == 1) {
+						sz = fast_atoreal_move<float>(sz, (float &)temp.x);
+						SkipSpaces(&sz);
+
+						sz = fast_atoreal_move<float>(sz, (float &)temp.y);
+						temp.y = 1.f - temp.y; // DX to OGL
+						curUV2s.push_back(temp);
+					}
+					// read optional tangent and bitangent vectors
+					else if (vertexFormat == 2) {
+						// tangents
+						sz = fast_atoreal_move<float>(sz, (float &)temp.x);
+						SkipSpaces(&sz);
+
+						sz = fast_atoreal_move<float>(sz, (float &)temp.z);
+						SkipSpaces(&sz);
+
+						sz = fast_atoreal_move<float>(sz, (float &)temp.y);
+						SkipSpaces(&sz);
+						temp.y *= -1.0f;
+						curTangents.push_back(temp);
+
+						// bitangents
+						sz = fast_atoreal_move<float>(sz, (float &)temp.x);
+						SkipSpaces(&sz);
+
+						sz = fast_atoreal_move<float>(sz, (float &)temp.z);
+						SkipSpaces(&sz);
+
+						sz = fast_atoreal_move<float>(sz, (float &)temp.y);
+						SkipSpaces(&sz);
+						temp.y *= -1.0f;
+						curBitangents.push_back(temp);
+					}
+				}
+
+				/* IMPORTANT: We assume that each vertex is specified in one
+                line. So we can skip the rest of the line - unknown vertex
+                elements are ignored.
+                */
+
+				while (SkipLine(&sz));
+			} else if (textMeaning == 2) {
+				textMeaning = 0;
+
+				// read indices
+				aiFace *curFace = curMesh->mFaces;
+				aiFace *const faceEnd = curMesh->mFaces + curMesh->mNumFaces;
+
+				aiVector3D *pcV = curMesh->mVertices;
+				aiVector3D *pcN = curMesh->mNormals;
+				aiVector3D *pcT = curMesh->mTangents;
+				aiVector3D *pcB = curMesh->mBitangents;
+				aiColor4D *pcC0 = curMesh->mColors[0];
+				aiVector3D *pcT0 = curMesh->mTextureCoords[0];
+				aiVector3D *pcT1 = curMesh->mTextureCoords[1];
+
+				unsigned int curIdx = 0;
+				unsigned int total = 0;
+				while (SkipSpacesAndLineEnd(&sz)) {
+					if (curFace >= faceEnd) {
+						ASSIMP_LOG_ERROR("IRRMESH: Too many indices");
+						break;
+					}
+					if (!curIdx) {
+						curFace->mNumIndices = 3;
+						curFace->mIndices = new unsigned int[3];
+					}
+
+					unsigned int idx = strtoul10(sz, &sz);
+					if (idx >= curVertices.size()) {
+						ASSIMP_LOG_ERROR("IRRMESH: Index out of range");
+						idx = 0;
+					}
+
+					curFace->mIndices[curIdx] = total++;
+
+					*pcV++ = curVertices[idx];
+					if (pcN) *pcN++ = curNormals[idx];
+					if (pcT) *pcT++ = curTangents[idx];
+					if (pcB) *pcB++ = curBitangents[idx];
+					if (pcC0) *pcC0++ = curColors[idx];
+					if (pcT0) *pcT0++ = curUVs[idx];
+					if (pcT1) *pcT1++ = curUV2s[idx];
+
+					if (++curIdx == 3) {
+						++curFace;
+						curIdx = 0;
+					}
+				}
+
+				if (curFace != faceEnd)
+					ASSIMP_LOG_ERROR("IRRMESH: Not enough indices");
+
+				// Finish processing the mesh - do some small material workarounds
+				if (curMatFlags & AI_IRRMESH_MAT_trans_vertex_alpha && !useColors) {
+					// Take the opacity value of the current material
+					// from the common vertex color alpha
+					aiMaterial *mat = (aiMaterial *)curMat;
+					mat->AddProperty(&curColors[0].a, 1, AI_MATKEY_OPACITY);
+				}
+			}
+		}
+	}
+
+	// End of the last buffer. A material and a mesh should be there
+	if (curMat || curMesh) {
+		if (!curMat || !curMesh) {
+			ASSIMP_LOG_ERROR("IRRMESH: A buffer must contain a mesh and a material");
+			releaseMaterial(&curMat);
+			releaseMesh(&curMesh);
+		} else {
+			materials.push_back(curMat);
+			meshes.push_back(curMesh);
+		}
+	}
+
+	if (materials.empty()) {
+		throw DeadlyImportError("IRRMESH: Unable to read a mesh from this file");
+	}
+
+	// now generate the output scene
+	pScene->mNumMeshes = (unsigned int)meshes.size();
+	pScene->mMeshes = new aiMesh *[pScene->mNumMeshes];
+	for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
+		pScene->mMeshes[i] = meshes[i];
+
+		// clean this value ...
+		pScene->mMeshes[i]->mNumUVComponents[3] = 0;
+	}
+
+	pScene->mNumMaterials = (unsigned int)materials.size();
+	pScene->mMaterials = new aiMaterial *[pScene->mNumMaterials];
+	::memcpy(pScene->mMaterials, &materials[0], sizeof(void *) * pScene->mNumMaterials);
+
+	pScene->mRootNode = new aiNode();
+	pScene->mRootNode->mName.Set("<IRRMesh>");
+	pScene->mRootNode->mNumMeshes = pScene->mNumMeshes;
+	pScene->mRootNode->mMeshes = new unsigned int[pScene->mNumMeshes];
+
+	for (unsigned int i = 0; i < pScene->mNumMeshes; ++i) {
+		pScene->mRootNode->mMeshes[i] = i;
+	}
+}
+
+#endif // !! ASSIMP_BUILD_NO_IRRMESH_IMPORTER