.vti reader wip

modules/volume/CMakeLists.txt

@@ -50,6 +50,7 @@ set(HEADER_FILES
   rendering/volumeclipplanes.h
   tasks/generaterawvolumetask.h
   tasks/generaterawvolumefromfiletask.h
+  xmlreader.h
 )
 source_group("Header Files" FILES ${HEADER_FILES})
 
@@ -72,6 +73,7 @@ set(SOURCE_FILES
   rendering/volumeclipplanes.cpp
   tasks/generaterawvolumetask.cpp
   tasks/generaterawvolumefromfiletask.cpp
+  xmlreader.cpp
 )
 
 source_group("Source Files" FILES ${SOURCE_FILES})

modules/volume/rendering/renderabletimevaryingvolume.cpp

@@ -48,6 +48,8 @@
 #include <filesystem>
 #include <optional>
 
+#include <modules/volume/xmlreader.h>
+
 namespace {
     constexpr std::string_view _loggerCat = "RenderableTimeVaryingVolume";
 
@@ -236,6 +238,9 @@ void RenderableTimeVaryingVolume::initializeGL() {
         if (e.is_regular_file() && e.path().extension() == ".dictionary") {
             loadTimestepMetadata(e.path());
         }
+        if (e.is_regular_file() && e.path().extension() == ".vti") {
+            readVTIFile(e.path());
+        }
     }
 
     // TODO: defer loading of data to later (separate thread or at least not when loading)

modules/volume/xmlreader.cpp

@@ -0,0 +1,92 @@
+/*****************************************************************************************
+ *                                                                                       *
+ * OpenSpace                                                                             *
+ *                                                                                       *
+ * Copyright (c) 2014-2025                                                               *
+ *                                                                                       *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
+ * software and associated documentation files (the "Software"), to deal in the Software *
+ * without restriction, including without limitation the rights to use, copy, modify,    *
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
+ * permit persons to whom the Software is furnished to do so, subject to the following   *
+ * conditions:                                                                           *
+ *                                                                                       *
+ * The above copyright notice and this permission notice shall be included in all copies *
+ * or substantial portions of the Software.                                              *
+ *                                                                                       *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
+ ****************************************************************************************/
+
+#include <modules/volume/xmlreader.h>
+#include <fstream>
+#include <ghoul/misc/assert.h>
+#include <ghoul/misc/stringhelper.h>
+#include <iostream>
+#include <sstream>
+
+#include <tinyxml>
+
+namespace openspace {
+
+std::string getAttribute(const std::string& line, const std::string& attribute) {
+    size_t pos = line.find(attribute + "=\"");
+    if (pos == std::string::npos) {
+        return "";
+    }
+    pos += attribute.length() + 2;
+    const size_t end = line.find("\"", pos);
+    if (pos == std::string::npos) {
+        return "";
+    }
+
+    return line.substr(pos, end - pos);
+
+}
+
+void readVTIFile(const std::filesystem::path& path) {
+    tinyxml2::XMLDocument doc;
+
+    //std::ifstream file;
+    //file.open(path);
+    //ghoul_assert(file.good(), "File handle should be good");
+
+    //std::stringstream ss;
+    //std::string line;
+    //while (ghoul::getline(file, line)) {
+    //    std::cout << line << std::endl;
+
+    //    if (line.find("<ImageData") != std::string::npos) {
+    //        const std::string wholeExtent = getAttribute(line, "WholeExtent");
+    //        const std::string origin = getAttribute(line, "Origin");
+    //        const std::string spacing = getAttribute(line, "Spacing");
+
+    //        std::cout << "Whole extent '" << wholeExtent << "'\n"
+    //            << "origin '" << origin << "'\n"
+    //            << "spacing '" << spacing << "'\n";
+    //    }
+    //    else if (line.find("<Piece") != std::string::npos) {
+    //        const std::string extent = getAttribute(line, "Extent");
+    //        std::cout << "Extent: " << extent << std::endl;
+    //    }
+
+    //    else if (line.find("<DataArray") != std::string::npos) {
+    //        ghoul::getline(file, line);
+    //        ss << line << " ";
+    //    }
+    //}
+
+    //float value = 0.f;
+    //std::vector<float> dataValues;
+    //while (ss >> value) {
+    //    dataValues.push_back(value);
+    //}
+
+    //file.close();
+}
+
+} // namespace openspace

modules/volume/xmlreader.h

@@ -0,0 +1,31 @@
+/*****************************************************************************************
+ *                                                                                       *
+ * OpenSpace                                                                             *
+ *                                                                                       *
+ * Copyright (c) 2014-2025                                                               *
+ *                                                                                       *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
+ * software and associated documentation files (the "Software"), to deal in the Software *
+ * without restriction, including without limitation the rights to use, copy, modify,    *
+ * merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
+ * permit persons to whom the Software is furnished to do so, subject to the following   *
+ * conditions:                                                                           *
+ *                                                                                       *
+ * The above copyright notice and this permission notice shall be included in all copies *
+ * or substantial portions of the Software.                                              *
+ *                                                                                       *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
+ * PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
+ * CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
+ * OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
+ ****************************************************************************************/
+
+#include <ghoul/filesystem/filesystem.h>
+
+namespace openspace {
+
+    void readVTIFile(const std::filesystem::path& path);
+
+} // namespace openspace