mirror of
https://github.com/OpenSpace/OpenSpace.git
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255 lines
9.0 KiB
C++
255 lines
9.0 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#include <modules/base/rendering/modelgeometry.h>
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#include <openspace/util/factorymanager.h>
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#include <ghoul/filesystem/cachemanager.h>
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#include <ghoul/filesystem/filesystem.h>
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#include <fstream>
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#include <modules/base/rendering/wavefrontgeometry.h>
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namespace {
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const std::string _loggerCat = "ModelGeometry";
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const std::string keyObjFile = "ObjFile";
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const int8_t CurrentCacheVersion = 3;
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const std::string keyType = "Type";
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const std::string keyName = "Name";
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const std::string keySize = "Magnification";
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}
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namespace openspace {
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namespace modelgeometry {
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ModelGeometry* ModelGeometry::createFromDictionary(const ghoul::Dictionary& dictionary) {
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std::string geometryType;
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const bool success = dictionary.getValue(
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keyType, geometryType);
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if (!success) {
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LERROR("ModelGeometry did not contain a correct value of the key '"
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<< keyType << "'");
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return nullptr;
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}
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ghoul::TemplateFactory<ModelGeometry>* factory
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= FactoryManager::ref().factory<ModelGeometry>();
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ModelGeometry* result = factory->create(geometryType, dictionary);
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if (result == nullptr) {
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LERROR("Failed to create a ModelGeometry object of type '" << geometryType
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<< "'");
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return nullptr;
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}
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return result;
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}
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ModelGeometry::ModelGeometry(const ghoul::Dictionary& dictionary)
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: _parent(nullptr)
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, _magnification("magnification", "Magnification", 0.f, 0.f, 10.f)
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, _mode(GL_TRIANGLES)
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{
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setName("ModelGeometry");
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std::string name;
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bool success = dictionary.getValue(keyName, name);
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ghoul_assert(success, "Name tag was not present");
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if (dictionary.hasKeyAndValue<double>(keySize))
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_magnification = static_cast<float>(dictionary.value<double>(keySize));
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success = dictionary.getValue(keyObjFile, _file);
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if (!success) {
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LERROR("WaveFrontGeometry of '" << name << "' did not provide a key '"
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<< keyObjFile << "'");
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}
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_file = FileSys.absolutePath(_file);
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if (!FileSys.fileExists(_file, true))
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LERROR("Could not load OBJ file '" << _file << "': File not found");
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addProperty(_magnification);
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}
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ModelGeometry::~ModelGeometry() {
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}
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void ModelGeometry::render() {
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glBindVertexArray(_vaoID);
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _ibo);
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glDrawElements(_mode, static_cast<GLsizei>(_indices.size()), GL_UNSIGNED_INT, 0);
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glBindVertexArray(0);
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}
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void ModelGeometry::changeRenderMode(const GLenum mode) {
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_mode = mode;
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}
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bool ModelGeometry::initialize(Renderable* parent) {
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_parent = parent;
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PowerScaledScalar ps = PowerScaledScalar(1.0, 0.0); // will set proper bounding soon.
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_parent->setBoundingSphere(ps);
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if (_vertices.empty())
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return false;
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glGenVertexArrays(1, &_vaoID);
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glGenBuffers(1, &_vbo);
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glGenBuffers(1, &_ibo);
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glBindVertexArray(_vaoID);
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glBindBuffer(GL_ARRAY_BUFFER, _vbo);
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glBufferData(GL_ARRAY_BUFFER, _vertices.size() * sizeof(Vertex), _vertices.data(), GL_STATIC_DRAW);
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glEnableVertexAttribArray(0);
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glEnableVertexAttribArray(1);
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glEnableVertexAttribArray(2);
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glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(Vertex),
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reinterpret_cast<const GLvoid*>(offsetof(Vertex, location)));
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glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex),
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reinterpret_cast<const GLvoid*>(offsetof(Vertex, tex)));
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glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex),
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reinterpret_cast<const GLvoid*>(offsetof(Vertex, normal)));
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glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, _ibo);
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glBufferData(GL_ELEMENT_ARRAY_BUFFER, _indices.size() * sizeof(int), _indices.data(), GL_STATIC_DRAW);
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glBindVertexArray(0);
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return true;
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}
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void ModelGeometry::deinitialize() {
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glDeleteBuffers(1, &_vbo);
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glDeleteVertexArrays(1, &_vaoID);
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glDeleteBuffers(1, &_ibo);
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}
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bool ModelGeometry::loadObj(const std::string& filename) {
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std::string cachedFile = FileSys.cacheManager()->cachedFilename(filename, true);
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bool hasCachedFile = FileSys.fileExists(cachedFile);
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if (hasCachedFile) {
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LINFO("Cached file '" << cachedFile << "' used for Model file '" << filename << "'");
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bool success = loadCachedFile(cachedFile);
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if (success)
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return true;
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else
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FileSys.cacheManager()->removeCacheFile(filename);
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// Intentional fall-through to the 'else' computation to generate the cache
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// file for the next run
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}
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else {
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LINFO("Cache for Model '" << filename << "' not found");
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}
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LINFO("Loading Model file '" << filename << "'");
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bool success = loadModel(filename);
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if (!success)
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//return false;
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LINFO("Saving cache");
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success = saveCachedFile(cachedFile);
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return success;
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}
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bool ModelGeometry::saveCachedFile(const std::string& filename) {
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std::ofstream fileStream(filename, std::ofstream::binary);
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if (fileStream.good()) {
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fileStream.write(reinterpret_cast<const char*>(&CurrentCacheVersion),
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sizeof(int8_t));
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int64_t vSize = _vertices.size();
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fileStream.write(reinterpret_cast<const char*>(&vSize), sizeof(int64_t));
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int64_t iSize = _indices.size();
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fileStream.write(reinterpret_cast<const char*>(&iSize), sizeof(int64_t));
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fileStream.write(reinterpret_cast<const char*>(_vertices.data()), sizeof(Vertex) * vSize);
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fileStream.write(reinterpret_cast<const char*>(_indices.data()), sizeof(int) * iSize);
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return fileStream.good();
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}
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else {
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LERROR("Error opening file '" << filename << "' for save cache file");
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return false;
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}
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}
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bool ModelGeometry::loadCachedFile(const std::string& filename) {
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std::ifstream fileStream(filename, std::ifstream::binary);
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if (fileStream.good()) {
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int8_t version = 0;
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fileStream.read(reinterpret_cast<char*>(&version), sizeof(int8_t));
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if (version != CurrentCacheVersion) {
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LINFO("The format of the cached file has changed, deleting old cache");
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fileStream.close();
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FileSys.deleteFile(filename);
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return false;
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}
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int64_t vSize, iSize;
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fileStream.read(reinterpret_cast<char*>(&vSize), sizeof(int64_t));
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fileStream.read(reinterpret_cast<char*>(&iSize), sizeof(int64_t));
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if (vSize == 0 || iSize == 0) {
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LERROR("Error opening file '" << filename << "' for loading cache file");
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return false;
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}
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_vertices.resize(vSize);
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_indices.resize(iSize);
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fileStream.read(reinterpret_cast<char*>(_vertices.data()), sizeof(Vertex) * vSize);
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fileStream.read(reinterpret_cast<char*>(_indices.data()), sizeof(int) * iSize);
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return fileStream.good();
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}
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else {
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LERROR("Error opening file '" << filename << "' for loading cache file");
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return false;
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}
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}
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bool ModelGeometry::getVertices(std::vector<Vertex>* vertexList) {
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vertexList->clear();
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for (auto v : _vertices)
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vertexList->push_back(v);
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return !(vertexList->empty());
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}
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bool ModelGeometry::getIndices(std::vector<int>* indexList) {
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indexList->clear();
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for (auto i : _indices)
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indexList->push_back(i);
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return !(indexList->empty());
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}
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void ModelGeometry::setUniforms(ghoul::opengl::ProgramObject& program) {
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program.setUniform("_magnification", _magnification);
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}
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} // namespace modelgeometry
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} // namespace openspace
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