tried to add assimp (spoilers, it did not go well, so hey! now we have separate fiels now.)
This commit is contained in:
Anemunt
524
src/ThirdParty/assimp/code/AssetLib/BVH/BVHLoader.cpp
vendored
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524
src/ThirdParty/assimp/code/AssetLib/BVH/BVHLoader.cpp
vendored
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@@ -0,0 +1,524 @@
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/** Implementation of the BVH loader */
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/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2025, assimp team
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All rights reserved.
|
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Redistribution and use of this software in source and binary forms,
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with or without modification, are permitted provided that the following
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||||
conditions are met:
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||||
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* Redistributions of source code must retain the above
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||||
copyright notice, this list of conditions and the
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||||
following disclaimer.
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||||
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||||
* Redistributions in binary form must reproduce the above
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||||
copyright notice, this list of conditions and the
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||||
following disclaimer in the documentation and/or other
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materials provided with the distribution.
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||||
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* Neither the name of the assimp team, nor the names of its
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||||
contributors may be used to endorse or promote products
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||||
derived from this software without specific prior
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||||
written permission of the assimp team.
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||||
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||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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---------------------------------------------------------------------------
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*/
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#ifndef ASSIMP_BUILD_NO_BVH_IMPORTER
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#include "BVHLoader.h"
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#include <assimp/SkeletonMeshBuilder.h>
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#include <assimp/TinyFormatter.h>
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#include <assimp/fast_atof.h>
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#include <assimp/importerdesc.h>
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#include <assimp/scene.h>
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#include <assimp/IOSystem.hpp>
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#include <assimp/Importer.hpp>
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#include <map>
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#include <memory>
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namespace Assimp {
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using namespace Assimp::Formatter;
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static constexpr aiImporterDesc desc = {
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"BVH Importer (MoCap)",
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"",
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"",
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"",
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aiImporterFlags_SupportTextFlavour,
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0,
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0,
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0,
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0,
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"bvh"
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};
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// ------------------------------------------------------------------------------------------------
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// Aborts the file reading with an exception
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template <typename... T>
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AI_WONT_RETURN void BVHLoader::ThrowException(T &&...args) {
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throw DeadlyImportError(mFileName, ":", mLine, " - ", args...);
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}
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// ------------------------------------------------------------------------------------------------
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// Constructor to be privately used by Importer
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BVHLoader::BVHLoader() :
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mLine(),
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mAnimTickDuration(),
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mAnimNumFrames(),
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noSkeletonMesh() {
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// empty
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}
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// ------------------------------------------------------------------------------------------------
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// Returns whether the class can handle the format of the given file.
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bool BVHLoader::CanRead(const std::string &pFile, IOSystem *pIOHandler, bool /*checkSig*/) const {
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static const char *tokens[] = { "HIERARCHY" };
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return SearchFileHeaderForToken(pIOHandler, pFile, tokens, AI_COUNT_OF(tokens));
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}
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// ------------------------------------------------------------------------------------------------
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void BVHLoader::SetupProperties(const Importer *pImp) {
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noSkeletonMesh = pImp->GetPropertyInteger(AI_CONFIG_IMPORT_NO_SKELETON_MESHES, 0) != 0;
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}
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// ------------------------------------------------------------------------------------------------
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// Loader meta information
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const aiImporterDesc *BVHLoader::GetInfo() const {
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return &desc;
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}
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// ------------------------------------------------------------------------------------------------
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// Imports the given file into the given scene structure.
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void BVHLoader::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
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mFileName = pFile;
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// read file into memory
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std::unique_ptr<IOStream> file(pIOHandler->Open(pFile));
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if (file == nullptr) {
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throw DeadlyImportError("Failed to open file ", pFile, ".");
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}
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size_t fileSize = file->FileSize();
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if (fileSize == 0) {
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throw DeadlyImportError("File is too small.");
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}
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mBuffer.resize(fileSize);
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file->Read(&mBuffer.front(), 1, fileSize);
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// start reading
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mReader = mBuffer.begin();
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mLine = 1;
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ReadStructure(pScene);
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if (!noSkeletonMesh) {
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// build a dummy mesh for the skeleton so that we see something at least
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SkeletonMeshBuilder meshBuilder(pScene);
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}
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// construct an animation from all the motion data we read
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CreateAnimation(pScene);
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the file
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void BVHLoader::ReadStructure(aiScene *pScene) {
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// first comes hierarchy
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std::string header = GetNextToken();
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if (header != "HIERARCHY")
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ThrowException("Expected header string \"HIERARCHY\".");
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ReadHierarchy(pScene);
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// then comes the motion data
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std::string motion = GetNextToken();
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if (motion != "MOTION")
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ThrowException("Expected beginning of motion data \"MOTION\".");
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ReadMotion(pScene);
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the hierarchy
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void BVHLoader::ReadHierarchy(aiScene *pScene) {
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std::string root = GetNextToken();
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if (root != "ROOT")
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ThrowException("Expected root node \"ROOT\".");
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// Go read the hierarchy from here
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pScene->mRootNode = ReadNode();
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}
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// ------------------------------------------------------------------------------------------------
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// Reads a node and recursively its children and returns the created node;
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aiNode *BVHLoader::ReadNode() {
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// first token is name
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std::string nodeName = GetNextToken();
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if (nodeName.empty() || nodeName == "{")
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ThrowException("Expected node name, but found \"", nodeName, "\".");
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// then an opening brace should follow
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std::string openBrace = GetNextToken();
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if (openBrace != "{")
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ThrowException("Expected opening brace \"{\", but found \"", openBrace, "\".");
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// Create a node
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aiNode *node = new aiNode(nodeName);
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std::vector<aiNode *> childNodes;
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// and create an bone entry for it
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mNodes.emplace_back(node);
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Node &internNode = mNodes.back();
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// now read the node's contents
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std::string siteToken;
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while (true) {
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std::string token = GetNextToken();
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// node offset to parent node
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if (token == "OFFSET")
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ReadNodeOffset(node);
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else if (token == "CHANNELS")
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ReadNodeChannels(internNode);
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else if (token == "JOINT") {
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// child node follows
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aiNode *child = ReadNode();
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child->mParent = node;
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childNodes.push_back(child);
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} else if (token == "End") {
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// The real symbol is "End Site". Second part comes in a separate token
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siteToken.clear();
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siteToken = GetNextToken();
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if (siteToken != "Site")
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ThrowException("Expected \"End Site\" keyword, but found \"", token, " ", siteToken, "\".");
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aiNode *child = ReadEndSite(nodeName);
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child->mParent = node;
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childNodes.push_back(child);
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} else if (token == "}") {
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// we're done with that part of the hierarchy
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break;
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} else {
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// everything else is a parse error
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ThrowException("Unknown keyword \"", token, "\".");
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}
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}
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// add the child nodes if there are any
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if (childNodes.size() > 0) {
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node->mNumChildren = static_cast<unsigned int>(childNodes.size());
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node->mChildren = new aiNode *[node->mNumChildren];
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std::copy(childNodes.begin(), childNodes.end(), node->mChildren);
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}
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// and return the sub-hierarchy we built here
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return node;
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}
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// ------------------------------------------------------------------------------------------------
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// Reads an end node and returns the created node.
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aiNode *BVHLoader::ReadEndSite(const std::string &pParentName) {
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// check opening brace
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std::string openBrace = GetNextToken();
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if (openBrace != "{")
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ThrowException("Expected opening brace \"{\", but found \"", openBrace, "\".");
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// Create a node
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aiNode *node = new aiNode("EndSite_" + pParentName);
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// now read the node's contents. Only possible entry is "OFFSET"
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std::string token;
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while (true) {
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token.clear();
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token = GetNextToken();
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// end node's offset
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if (token == "OFFSET") {
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ReadNodeOffset(node);
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} else if (token == "}") {
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// we're done with the end node
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break;
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} else {
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// everything else is a parse error
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ThrowException("Unknown keyword \"", token, "\".");
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}
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}
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// and return the sub-hierarchy we built here
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return node;
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}
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// ------------------------------------------------------------------------------------------------
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// Reads a node offset for the given node
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void BVHLoader::ReadNodeOffset(aiNode *pNode) {
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// Offset consists of three floats to read
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aiVector3D offset;
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offset.x = GetNextTokenAsFloat();
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offset.y = GetNextTokenAsFloat();
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offset.z = GetNextTokenAsFloat();
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// build a transformation matrix from it
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pNode->mTransformation = aiMatrix4x4(1.0f, 0.0f, 0.0f, offset.x,
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0.0f, 1.0f, 0.0f, offset.y,
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0.0f, 0.0f, 1.0f, offset.z,
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0.0f, 0.0f, 0.0f, 1.0f);
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the animation channels for the given node
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void BVHLoader::ReadNodeChannels(BVHLoader::Node &pNode) {
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// number of channels. Use the float reader because we're lazy
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float numChannelsFloat = GetNextTokenAsFloat();
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unsigned int numChannels = (unsigned int)numChannelsFloat;
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for (unsigned int a = 0; a < numChannels; a++) {
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std::string channelToken = GetNextToken();
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if (channelToken == "Xposition")
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pNode.mChannels.push_back(Channel_PositionX);
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else if (channelToken == "Yposition")
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pNode.mChannels.push_back(Channel_PositionY);
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else if (channelToken == "Zposition")
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pNode.mChannels.push_back(Channel_PositionZ);
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else if (channelToken == "Xrotation")
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pNode.mChannels.push_back(Channel_RotationX);
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else if (channelToken == "Yrotation")
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pNode.mChannels.push_back(Channel_RotationY);
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else if (channelToken == "Zrotation")
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pNode.mChannels.push_back(Channel_RotationZ);
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else
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ThrowException("Invalid channel specifier \"", channelToken, "\".");
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Reads the motion data
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void BVHLoader::ReadMotion(aiScene * /*pScene*/) {
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// Read number of frames
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std::string tokenFrames = GetNextToken();
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if (tokenFrames != "Frames:")
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||||
ThrowException("Expected frame count \"Frames:\", but found \"", tokenFrames, "\".");
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||||
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float numFramesFloat = GetNextTokenAsFloat();
|
||||
mAnimNumFrames = (unsigned int)numFramesFloat;
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||||
|
||||
// Read frame duration
|
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std::string tokenDuration1 = GetNextToken();
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std::string tokenDuration2 = GetNextToken();
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||||
if (tokenDuration1 != "Frame" || tokenDuration2 != "Time:")
|
||||
ThrowException("Expected frame duration \"Frame Time:\", but found \"", tokenDuration1, " ", tokenDuration2, "\".");
|
||||
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mAnimTickDuration = GetNextTokenAsFloat();
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|
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// resize value vectors for each node
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for (std::vector<Node>::iterator it = mNodes.begin(); it != mNodes.end(); ++it)
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it->mChannelValues.reserve(it->mChannels.size() * mAnimNumFrames);
|
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||||
// now read all the data and store it in the corresponding node's value vector
|
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for (unsigned int frame = 0; frame < mAnimNumFrames; ++frame) {
|
||||
// on each line read the values for all nodes
|
||||
for (std::vector<Node>::iterator it = mNodes.begin(); it != mNodes.end(); ++it) {
|
||||
// get as many values as the node has channels
|
||||
for (unsigned int c = 0; c < it->mChannels.size(); ++c)
|
||||
it->mChannelValues.push_back(GetNextTokenAsFloat());
|
||||
}
|
||||
|
||||
// after one frame worth of values for all nodes there should be a newline, but we better don't rely on it
|
||||
}
|
||||
}
|
||||
|
||||
// ------------------------------------------------------------------------------------------------
|
||||
// Retrieves the next token
|
||||
std::string BVHLoader::GetNextToken() {
|
||||
// skip any preceding whitespace
|
||||
while (mReader != mBuffer.end()) {
|
||||
if (!isspace((unsigned char)*mReader))
|
||||
break;
|
||||
|
||||
// count lines
|
||||
if (*mReader == '\n')
|
||||
mLine++;
|
||||
|
||||
++mReader;
|
||||
}
|
||||
|
||||
// collect all chars till the next whitespace. BVH is easy in respect to that.
|
||||
std::string token;
|
||||
while (mReader != mBuffer.end()) {
|
||||
if (isspace((unsigned char)*mReader))
|
||||
break;
|
||||
|
||||
token.push_back(*mReader);
|
||||
++mReader;
|
||||
|
||||
// little extra logic to make sure braces are counted correctly
|
||||
if (token == "{" || token == "}")
|
||||
break;
|
||||
}
|
||||
|
||||
// empty token means end of file, which is just fine
|
||||
return token;
|
||||
}
|
||||
|
||||
// ------------------------------------------------------------------------------------------------
|
||||
// Reads the next token as a float
|
||||
float BVHLoader::GetNextTokenAsFloat() {
|
||||
std::string token = GetNextToken();
|
||||
if (token.empty())
|
||||
ThrowException("Unexpected end of file while trying to read a float");
|
||||
|
||||
// check if the float is valid by testing if the atof() function consumed every char of the token
|
||||
const char *ctoken = token.c_str();
|
||||
float result = 0.0f;
|
||||
ctoken = fast_atoreal_move(ctoken, result);
|
||||
|
||||
if (ctoken != token.c_str() + token.length())
|
||||
ThrowException("Expected a floating point number, but found \"", token, "\".");
|
||||
|
||||
return result;
|
||||
}
|
||||
|
||||
// ------------------------------------------------------------------------------------------------
|
||||
// Constructs an animation for the motion data and stores it in the given scene
|
||||
void BVHLoader::CreateAnimation(aiScene *pScene) {
|
||||
// create the animation
|
||||
pScene->mNumAnimations = 1;
|
||||
pScene->mAnimations = new aiAnimation *[1];
|
||||
aiAnimation *anim = new aiAnimation;
|
||||
pScene->mAnimations[0] = anim;
|
||||
|
||||
// put down the basic parameters
|
||||
anim->mName.Set("Motion");
|
||||
anim->mTicksPerSecond = 1.0 / double(mAnimTickDuration);
|
||||
anim->mDuration = double(mAnimNumFrames - 1);
|
||||
|
||||
// now generate the tracks for all nodes
|
||||
anim->mNumChannels = static_cast<unsigned int>(mNodes.size());
|
||||
anim->mChannels = new aiNodeAnim *[anim->mNumChannels];
|
||||
|
||||
// FIX: set the array elements to nullptr to ensure proper deletion if an exception is thrown
|
||||
for (unsigned int i = 0; i < anim->mNumChannels; ++i)
|
||||
anim->mChannels[i] = nullptr;
|
||||
|
||||
for (unsigned int a = 0; a < anim->mNumChannels; a++) {
|
||||
const Node &node = mNodes[a];
|
||||
const std::string nodeName = std::string(node.mNode->mName.data);
|
||||
aiNodeAnim *nodeAnim = new aiNodeAnim;
|
||||
anim->mChannels[a] = nodeAnim;
|
||||
nodeAnim->mNodeName.Set(nodeName);
|
||||
std::map<BVHLoader::ChannelType, int> channelMap;
|
||||
|
||||
// Build map of channels
|
||||
for (unsigned int channel = 0; channel < node.mChannels.size(); ++channel) {
|
||||
channelMap[node.mChannels[channel]] = channel;
|
||||
}
|
||||
|
||||
// translational part, if given
|
||||
if (node.mChannels.size() == 6) {
|
||||
nodeAnim->mNumPositionKeys = mAnimNumFrames;
|
||||
nodeAnim->mPositionKeys = new aiVectorKey[mAnimNumFrames];
|
||||
aiVectorKey *poskey = nodeAnim->mPositionKeys;
|
||||
for (unsigned int fr = 0; fr < mAnimNumFrames; ++fr) {
|
||||
poskey->mTime = double(fr);
|
||||
|
||||
// Now compute all translations
|
||||
for (BVHLoader::ChannelType channel = Channel_PositionX; channel <= Channel_PositionZ; channel = (BVHLoader::ChannelType)(channel + 1)) {
|
||||
// Find channel in node
|
||||
std::map<BVHLoader::ChannelType, int>::iterator mapIter = channelMap.find(channel);
|
||||
|
||||
if (mapIter == channelMap.end())
|
||||
throw DeadlyImportError("Missing position channel in node ", nodeName);
|
||||
else {
|
||||
int channelIdx = mapIter->second;
|
||||
switch (channel) {
|
||||
case Channel_PositionX:
|
||||
poskey->mValue.x = node.mChannelValues[fr * node.mChannels.size() + channelIdx];
|
||||
break;
|
||||
case Channel_PositionY:
|
||||
poskey->mValue.y = node.mChannelValues[fr * node.mChannels.size() + channelIdx];
|
||||
break;
|
||||
case Channel_PositionZ:
|
||||
poskey->mValue.z = node.mChannelValues[fr * node.mChannels.size() + channelIdx];
|
||||
break;
|
||||
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
++poskey;
|
||||
}
|
||||
} else {
|
||||
// if no translation part is given, put a default sequence
|
||||
aiVector3D nodePos(node.mNode->mTransformation.a4, node.mNode->mTransformation.b4, node.mNode->mTransformation.c4);
|
||||
nodeAnim->mNumPositionKeys = 1;
|
||||
nodeAnim->mPositionKeys = new aiVectorKey[1];
|
||||
nodeAnim->mPositionKeys[0].mTime = 0.0;
|
||||
nodeAnim->mPositionKeys[0].mValue = nodePos;
|
||||
}
|
||||
|
||||
// rotation part. Always present. First find value offsets
|
||||
{
|
||||
|
||||
// Then create the number of rotation keys
|
||||
nodeAnim->mNumRotationKeys = mAnimNumFrames;
|
||||
nodeAnim->mRotationKeys = new aiQuatKey[mAnimNumFrames];
|
||||
aiQuatKey *rotkey = nodeAnim->mRotationKeys;
|
||||
for (unsigned int fr = 0; fr < mAnimNumFrames; ++fr) {
|
||||
aiMatrix4x4 temp;
|
||||
aiMatrix3x3 rotMatrix;
|
||||
for (unsigned int channelIdx = 0; channelIdx < node.mChannels.size(); ++channelIdx) {
|
||||
switch (node.mChannels[channelIdx]) {
|
||||
case Channel_RotationX: {
|
||||
const float angle = node.mChannelValues[fr * node.mChannels.size() + channelIdx] * float(AI_MATH_PI) / 180.0f;
|
||||
aiMatrix4x4::RotationX(angle, temp);
|
||||
rotMatrix *= aiMatrix3x3(temp);
|
||||
} break;
|
||||
case Channel_RotationY: {
|
||||
const float angle = node.mChannelValues[fr * node.mChannels.size() + channelIdx] * float(AI_MATH_PI) / 180.0f;
|
||||
aiMatrix4x4::RotationY(angle, temp);
|
||||
rotMatrix *= aiMatrix3x3(temp);
|
||||
} break;
|
||||
case Channel_RotationZ: {
|
||||
const float angle = node.mChannelValues[fr * node.mChannels.size() + channelIdx] * float(AI_MATH_PI) / 180.0f;
|
||||
aiMatrix4x4::RotationZ(angle, temp);
|
||||
rotMatrix *= aiMatrix3x3(temp);
|
||||
} break;
|
||||
default:
|
||||
break;
|
||||
}
|
||||
}
|
||||
rotkey->mTime = double(fr);
|
||||
rotkey->mValue = aiQuaternion(rotMatrix);
|
||||
++rotkey;
|
||||
}
|
||||
}
|
||||
|
||||
// scaling part. Always just a default track
|
||||
{
|
||||
nodeAnim->mNumScalingKeys = 1;
|
||||
nodeAnim->mScalingKeys = new aiVectorKey[1];
|
||||
nodeAnim->mScalingKeys[0].mTime = 0.0;
|
||||
nodeAnim->mScalingKeys[0].mValue.Set(1.0f, 1.0f, 1.0f);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace Assimp
|
||||
|
||||
#endif // !! ASSIMP_BUILD_NO_BVH_IMPORTER
|
||||
Reference in New Issue
Block a user