add assimp submodule

1 files changed, 500 insertions, 0 deletions

diff --git a/src/mesh/assimp-master/code/AssetLib/Ogre/OgreMaterial.cpp b/src/mesh/assimp-master/code/AssetLib/Ogre/OgreMaterial.cpp
new file mode 100644
index 0000000..7478a80
--- /dev/null
+++ b/src/mesh/assimp-master/code/AssetLib/Ogre/OgreMaterial.cpp
@@ -0,0 +1,500 @@
+/*
+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.
+
+----------------------------------------------------------------------
+*/
+
+#ifndef ASSIMP_BUILD_NO_OGRE_IMPORTER
+
+#include "OgreImporter.h"
+#include <assimp/StringUtils.h>
+#include <assimp/TinyFormatter.h>
+#include <assimp/fast_atof.h>
+#include <assimp/material.h>
+#include <assimp/scene.h>
+#include <assimp/DefaultLogger.hpp>
+
+#include <memory>
+#include <sstream>
+#include <vector>
+
+using namespace std;
+
+namespace Assimp {
+namespace Ogre {
+
+static const string partComment = "//";
+static const string partBlockStart = "{";
+static const string partBlockEnd = "}";
+
+void OgreImporter::ReadMaterials(const std::string &pFile, Assimp::IOSystem *pIOHandler, aiScene *pScene, Mesh *mesh) {
+    std::vector<aiMaterial *> materials;
+
+    // Create materials that can be found and parsed via the IOSystem.
+    for (size_t i = 0, len = mesh->NumSubMeshes(); i < len; ++i) {
+        SubMesh *submesh = mesh->GetSubMesh(i);
+        if (submesh && !submesh->materialRef.empty()) {
+            aiMaterial *material = ReadMaterial(pFile, pIOHandler, submesh->materialRef);
+            if (material) {
+                submesh->materialIndex = static_cast<int>(materials.size());
+                materials.push_back(material);
+            }
+        }
+    }
+
+    AssignMaterials(pScene, materials);
+}
+
+void OgreImporter::ReadMaterials(const std::string &pFile, Assimp::IOSystem *pIOHandler, aiScene *pScene, MeshXml *mesh) {
+    std::vector<aiMaterial *> materials;
+
+    // Create materials that can be found and parsed via the IOSystem.
+    for (size_t i = 0, len = mesh->NumSubMeshes(); i < len; ++i) {
+        SubMeshXml *submesh = mesh->GetSubMesh(static_cast<uint16_t>(i));
+        if (submesh && !submesh->materialRef.empty()) {
+            aiMaterial *material = ReadMaterial(pFile, pIOHandler, submesh->materialRef);
+            if (material) {
+                submesh->materialIndex = static_cast<int>(materials.size());
+                materials.push_back(material);
+            }
+        }
+    }
+
+    AssignMaterials(pScene, materials);
+}
+
+void OgreImporter::AssignMaterials(aiScene *pScene, std::vector<aiMaterial *> &materials) {
+    pScene->mNumMaterials = static_cast<unsigned int>(materials.size());
+    if (pScene->mNumMaterials > 0) {
+        pScene->mMaterials = new aiMaterial *[pScene->mNumMaterials];
+        for (size_t i = 0; i < pScene->mNumMaterials; ++i) {
+            pScene->mMaterials[i] = materials[i];
+        }
+    }
+}
+
+aiMaterial *OgreImporter::ReadMaterial(const std::string &pFile, Assimp::IOSystem *pIOHandler, const std::string &materialName) {
+    if (materialName.empty()) {
+        return 0;
+    }
+
+    // Full reference and examples of Ogre Material Script
+    // can be found from http://www.ogre3d.org/docs/manual/manual_14.html
+
+    /*and here is another one:
+
+    import * from abstract_base_passes_depth.material
+    import * from abstract_base.material
+    import * from mat_shadow_caster.material
+    import * from mat_character_singlepass.material
+
+    material hero/hair/caster : mat_shadow_caster_skin_areject
+    {
+      set $diffuse_map "hero_hair_alpha_c.dds"
+    }
+
+    material hero/hair_alpha : mat_char_cns_singlepass_areject_4weights
+    {
+      set $diffuse_map  "hero_hair_alpha_c.dds"
+      set $specular_map "hero_hair_alpha_s.dds"
+      set $normal_map   "hero_hair_alpha_n.dds"
+      set $light_map    "black_lightmap.dds"
+
+      set $shadow_caster_material "hero/hair/caster"
+    }
+    */
+
+    stringstream ss;
+
+    // Scope for scopre_ptr auto release
+    {
+        /* There are three .material options in priority order:
+            1) File with the material name (materialName)
+            2) File with the mesh files base name (pFile)
+            3) Optional user defined material library file (m_userDefinedMaterialLibFile) */
+        std::vector<string> potentialFiles;
+        potentialFiles.push_back(materialName + ".material");
+        potentialFiles.push_back(pFile.substr(0, pFile.rfind(".mesh")) + ".material");
+        if (!m_userDefinedMaterialLibFile.empty())
+            potentialFiles.push_back(m_userDefinedMaterialLibFile);
+
+        IOStream *materialFile = 0;
+        for (size_t i = 0; i < potentialFiles.size(); ++i) {
+            materialFile = pIOHandler->Open(potentialFiles[i]);
+            if (materialFile) {
+                break;
+            }
+            ASSIMP_LOG_VERBOSE_DEBUG("Source file for material '", materialName, "' ", potentialFiles[i], " does not exist");
+        }
+        if (!materialFile) {
+            ASSIMP_LOG_ERROR("Failed to find source file for material '", materialName, "'");
+            return 0;
+        }
+
+        std::unique_ptr<IOStream> stream(materialFile);
+        if (stream->FileSize() == 0) {
+            ASSIMP_LOG_WARN("Source file for material '", materialName, "' is empty (size is 0 bytes)");
+            return 0;
+        }
+
+        // Read bytes
+        vector<char> data(stream->FileSize());
+        stream->Read(&data[0], stream->FileSize(), 1);
+
+        // Convert to UTF-8 and terminate the string for ss
+        BaseImporter::ConvertToUTF8(data);
+        data.push_back('\0');
+
+        ss << &data[0];
+    }
+
+    ASSIMP_LOG_VERBOSE_DEBUG("Reading material '", materialName, "'");
+
+    aiMaterial *material = new aiMaterial();
+    m_textures.clear();
+
+    aiString matName(materialName);
+    material->AddProperty(&matName, AI_MATKEY_NAME);
+
+    // The stringstream will push words from a line until newline.
+    // It will also trim whitespace from line start and between words.
+    string linePart;
+    ss >> linePart;
+
+    const string partMaterial = "material";
+    const string partTechnique = "technique";
+
+    while (!ss.eof()) {
+        // Skip commented lines
+        if (linePart == partComment) {
+            NextAfterNewLine(ss, linePart);
+            continue;
+        }
+        if (linePart != partMaterial) {
+            ss >> linePart;
+            continue;
+        }
+
+        ss >> linePart;
+        if (linePart != materialName) {
+            ss >> linePart;
+            continue;
+        }
+
+        NextAfterNewLine(ss, linePart);
+        if (linePart != partBlockStart) {
+            ASSIMP_LOG_ERROR("Invalid material: block start missing near index ", ss.tellg());
+            return material;
+        }
+
+        ASSIMP_LOG_VERBOSE_DEBUG("material '", materialName, "'");
+
+        while (linePart != partBlockEnd) {
+            // Proceed to the first technique
+            ss >> linePart;
+
+            if (linePart == partTechnique) {
+                std::string techniqueName = SkipLine(ss);
+                ReadTechnique(ai_trim(techniqueName), ss, material);
+            }
+
+            // Read information from a custom material
+            /** @todo This "set $x y" does not seem to be a official Ogre material system feature.
+                Materials can inherit other materials and override texture units by using the (unique)
+                parent texture unit name in your cloned material.
+                This is not yet supported and below code is probably some hack from the original
+                author of this Ogre importer. Should be removed? */
+            if (linePart == "set") {
+                ss >> linePart;
+                if (linePart == "$specular") //todo load this values:
+                {
+                } else if (linePart == "$diffuse") {
+                } else if (linePart == "$ambient") {
+                } else if (linePart == "$colormap") {
+                    ss >> linePart;
+                    aiString cm(linePart);
+                    material->AddProperty(&cm, AI_MATKEY_TEXTURE(aiTextureType_DIFFUSE, 0));
+                } else if (linePart == "$normalmap") {
+                    ss >> linePart;
+                    aiString nm(linePart);
+                    material->AddProperty(&nm, AI_MATKEY_TEXTURE(aiTextureType_NORMALS, 0));
+                } else if (linePart == "$shininess_strength") {
+                    ss >> linePart;
+                    float Shininess = fast_atof(linePart.c_str());
+                    material->AddProperty(&Shininess, 1, AI_MATKEY_SHININESS_STRENGTH);
+                } else if (linePart == "$shininess_exponent") {
+                    ss >> linePart;
+                    float Shininess = fast_atof(linePart.c_str());
+                    material->AddProperty(&Shininess, 1, AI_MATKEY_SHININESS);
+                }
+                //Properties from Venetica:
+                else if (linePart == "$diffuse_map") {
+                    ss >> linePart;
+                    if (linePart[0] == '"') // "file" -> file
+                        linePart = linePart.substr(1, linePart.size() - 2);
+                    aiString ts(linePart);
+                    material->AddProperty(&ts, AI_MATKEY_TEXTURE(aiTextureType_DIFFUSE, 0));
+                } else if (linePart == "$specular_map") {
+                    ss >> linePart;
+                    if (linePart[0] == '"') // "file" -> file
+                        linePart = linePart.substr(1, linePart.size() - 2);
+                    aiString ts(linePart);
+                    material->AddProperty(&ts, AI_MATKEY_TEXTURE(aiTextureType_SHININESS, 0));
+                } else if (linePart == "$normal_map") {
+                    ss >> linePart;
+                    if (linePart[0] == '"') // "file" -> file
+                        linePart = linePart.substr(1, linePart.size() - 2);
+                    aiString ts(linePart);
+                    material->AddProperty(&ts, AI_MATKEY_TEXTURE(aiTextureType_NORMALS, 0));
+                } else if (linePart == "$light_map") {
+                    ss >> linePart;
+                    if (linePart[0] == '"') {
+                        linePart = linePart.substr(1, linePart.size() - 2);
+                    }
+                    aiString ts(linePart);
+                    material->AddProperty(&ts, AI_MATKEY_TEXTURE(aiTextureType_LIGHTMAP, 0));
+                }
+            }
+        }
+        ss >> linePart;
+    }
+
+    return material;
+}
+
+bool OgreImporter::ReadTechnique(const std::string &techniqueName, stringstream &ss, aiMaterial *material) {
+    string linePart;
+    ss >> linePart;
+
+    if (linePart != partBlockStart) {
+        ASSIMP_LOG_ERROR("Invalid material: Technique block start missing near index ", ss.tellg());
+        return false;
+    }
+
+    ASSIMP_LOG_VERBOSE_DEBUG(" technique '", techniqueName, "'");
+
+    const string partPass = "pass";
+
+    while (linePart != partBlockEnd) {
+        ss >> linePart;
+
+        // Skip commented lines
+        if (linePart == partComment) {
+            SkipLine(ss);
+            continue;
+        }
+
+        /// @todo Techniques have other attributes than just passes.
+        if (linePart == partPass) {
+            string passName = SkipLine(ss);
+            ReadPass(ai_trim(passName), ss, material);
+        }
+    }
+    return true;
+}
+
+bool OgreImporter::ReadPass(const std::string &passName, stringstream &ss, aiMaterial *material) {
+    string linePart;
+    ss >> linePart;
+
+    if (linePart != partBlockStart) {
+        ASSIMP_LOG_ERROR("Invalid material: Pass block start missing near index ", ss.tellg());
+        return false;
+    }
+
+    ASSIMP_LOG_VERBOSE_DEBUG("  pass '", passName, "'");
+
+    const string partAmbient = "ambient";
+    const string partDiffuse = "diffuse";
+    const string partSpecular = "specular";
+    const string partEmissive = "emissive";
+    const string partTextureUnit = "texture_unit";
+
+    while (linePart != partBlockEnd) {
+        ss >> linePart;
+
+        // Skip commented lines
+        if (linePart == partComment) {
+            SkipLine(ss);
+            continue;
+        }
+
+        // Colors
+        /// @todo Support alpha via aiColor4D.
+        if (linePart == partAmbient || linePart == partDiffuse || linePart == partSpecular || linePart == partEmissive) {
+            float r, g, b;
+            ss >> r >> g >> b;
+            const aiColor3D color(r, g, b);
+
+            ASSIMP_LOG_VERBOSE_DEBUG("   ", linePart, " ", r, " ", g, " ", b);
+
+            if (linePart == partAmbient) {
+                material->AddProperty(&color, 1, AI_MATKEY_COLOR_AMBIENT);
+            } else if (linePart == partDiffuse) {
+                material->AddProperty(&color, 1, AI_MATKEY_COLOR_DIFFUSE);
+            } else if (linePart == partSpecular) {
+                material->AddProperty(&color, 1, AI_MATKEY_COLOR_SPECULAR);
+            } else if (linePart == partEmissive) {
+                material->AddProperty(&color, 1, AI_MATKEY_COLOR_EMISSIVE);
+            }
+        } else if (linePart == partTextureUnit) {
+            string textureUnitName = SkipLine(ss);
+            ReadTextureUnit(ai_trim(textureUnitName), ss, material);
+        }
+    }
+    return true;
+}
+
+bool OgreImporter::ReadTextureUnit(const std::string &textureUnitName, stringstream &ss, aiMaterial *material) {
+    string linePart;
+    ss >> linePart;
+
+    if (linePart != partBlockStart) {
+        ASSIMP_LOG_ERROR("Invalid material: Texture unit block start missing near index ", ss.tellg());
+        return false;
+    }
+
+    ASSIMP_LOG_VERBOSE_DEBUG("   texture_unit '", textureUnitName, "'");
+
+    const string partTexture = "texture";
+    const string partTextCoordSet = "tex_coord_set";
+    const string partColorOp = "colour_op";
+
+    aiTextureType textureType = aiTextureType_NONE;
+    std::string textureRef;
+    int uvCoord = 0;
+
+    while (linePart != partBlockEnd) {
+        ss >> linePart;
+
+        // Skip commented lines
+        if (linePart == partComment) {
+            SkipLine(ss);
+            continue;
+        }
+
+        if (linePart == partTexture) {
+            ss >> linePart;
+            textureRef = linePart;
+
+            // User defined Assimp config property to detect texture type from filename.
+            if (m_detectTextureTypeFromFilename) {
+                size_t posSuffix = textureRef.find_last_of('.');
+                size_t posUnderscore = textureRef.find_last_of('_');
+
+                if (posSuffix != string::npos && posUnderscore != string::npos && posSuffix > posUnderscore) {
+                    string identifier = ai_tolower(textureRef.substr(posUnderscore, posSuffix - posUnderscore));
+                    ASSIMP_LOG_VERBOSE_DEBUG("Detecting texture type from filename postfix '", identifier, "'");
+
+                    if (identifier == "_n" || identifier == "_nrm" || identifier == "_nrml" || identifier == "_normal" || identifier == "_normals" || identifier == "_normalmap") {
+                        textureType = aiTextureType_NORMALS;
+                    } else if (identifier == "_s" || identifier == "_spec" || identifier == "_specular" || identifier == "_specularmap") {
+                        textureType = aiTextureType_SPECULAR;
+                    } else if (identifier == "_l" || identifier == "_light" || identifier == "_lightmap" || identifier == "_occ" || identifier == "_occlusion") {
+                        textureType = aiTextureType_LIGHTMAP;
+                    } else if (identifier == "_disp" || identifier == "_displacement") {
+                        textureType = aiTextureType_DISPLACEMENT;
+                    } else {
+                        textureType = aiTextureType_DIFFUSE;
+                    }
+                } else {
+                    textureType = aiTextureType_DIFFUSE;
+                }
+            }
+            // Detect from texture unit name. This cannot be too broad as
+            // authors might give names like "LightSaber" or "NormalNinja".
+            else {
+                string unitNameLower = ai_tolower(textureUnitName);
+                if (unitNameLower.find("normalmap") != string::npos) {
+                    textureType = aiTextureType_NORMALS;
+                } else if (unitNameLower.find("specularmap") != string::npos) {
+                    textureType = aiTextureType_SPECULAR;
+                } else if (unitNameLower.find("lightmap") != string::npos) {
+                    textureType = aiTextureType_LIGHTMAP;
+                } else if (unitNameLower.find("displacementmap") != string::npos) {
+                    textureType = aiTextureType_DISPLACEMENT;
+                } else {
+                    textureType = aiTextureType_DIFFUSE;
+                }
+            }
+        } else if (linePart == partTextCoordSet) {
+            ss >> uvCoord;
+        }
+        /// @todo Implement
+        else if (linePart == partColorOp) {
+            /*
+            ss >> linePart;
+            if("replace"==linePart)//I don't think, assimp has something for this...
+            {
+            }
+            else if("modulate"==linePart)
+            {
+                //TODO: set value
+                //material->AddProperty(aiTextureOp_Multiply)
+            }
+            */
+        }
+    }
+
+    if (textureRef.empty()) {
+        ASSIMP_LOG_WARN("Texture reference is empty, ignoring texture_unit.");
+        return false;
+    }
+    if (textureType == aiTextureType_NONE) {
+        ASSIMP_LOG_WARN("Failed to detect texture type for '", textureRef, "', ignoring texture_unit.");
+        return false;
+    }
+
+    unsigned int textureTypeIndex = m_textures[textureType];
+    m_textures[textureType]++;
+
+    ASSIMP_LOG_VERBOSE_DEBUG("    texture '", textureRef, "' type ", textureType,
+            " index ", textureTypeIndex, " UV ", uvCoord);
+
+    aiString assimpTextureRef(textureRef);
+    material->AddProperty(&assimpTextureRef, AI_MATKEY_TEXTURE(textureType, textureTypeIndex));
+    material->AddProperty(&uvCoord, 1, AI_MATKEY_UVWSRC(textureType, textureTypeIndex));
+
+    return true;
+}
+
+} // namespace Ogre
+} // namespace Assimp
+
+#endif // ASSIMP_BUILD_NO_OGRE_IMPORTER