virtualx-engine/modules/fbx/fbx_parser/FBXModel.cpp

/*************************************************************************/
/*  FBXModel.cpp                                                         */
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/*
Open Asset Import Library (assimp)
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Copyright (c) 2006-2019, assimp team


All rights reserved.

Redistribution and use of this software in source and binary forms,
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* 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
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* 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,
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*/

/** @file  FBXModel.cpp
 *  @brief Assimp::FBX::Model implementation
 */

#include "FBXDocument.h"
#include "FBXDocumentUtil.h"
#include "FBXMeshGeometry.h"
#include "FBXParser.h"

namespace FBXDocParser {

using namespace Util;

// ------------------------------------------------------------------------------------------------
Model::Model(uint64_t id, const ElementPtr element, const Document &doc, const std::string &name) :
		Object(id, element, name), shading("Y") {
	const ScopePtr sc = GetRequiredScope(element);
	const ElementPtr Shading = sc->GetElement("Shading");
	const ElementPtr Culling = sc->GetElement("Culling");

	if (Shading) {
		shading = GetRequiredToken(Shading, 0)->StringContents();
	}

	if (Culling) {
		culling = ParseTokenAsString(GetRequiredToken(Culling, 0));
	}

	props = GetPropertyTable(doc, "Model.FbxNode", element, sc);
	ResolveLinks(element, doc);
}

// ------------------------------------------------------------------------------------------------
Model::~Model() {
	if (props != nullptr) {
		delete props;
		props = nullptr;
	}
}

ModelLimbNode::ModelLimbNode(uint64_t id, const ElementPtr element, const Document &doc, const std::string &name) :
		Model(id, element, doc, name){

		};

ModelLimbNode::~ModelLimbNode() {
}

// ------------------------------------------------------------------------------------------------
void Model::ResolveLinks(const ElementPtr element, const Document &doc) {
	const char *const arr[] = { "Geometry", "Material", "NodeAttribute" };

	// resolve material
	const std::vector<const Connection *> &conns = doc.GetConnectionsByDestinationSequenced(ID(), arr, 3);

	materials.reserve(conns.size());
	geometry.reserve(conns.size());
	attributes.reserve(conns.size());
	for (const Connection *con : conns) {
		// material and geometry links should be Object-Object connections
		if (con->PropertyName().length()) {
			continue;
		}

		const Object *const ob = con->SourceObject();
		if (!ob) {
			//DOMWarning("failed to read source object for incoming Model link, ignoring",&element);
			continue;
		}

		const Material *const mat = dynamic_cast<const Material *>(ob);
		if (mat) {
			materials.push_back(mat);
			continue;
		}

		const Geometry *const geo = dynamic_cast<const Geometry *>(ob);
		if (geo) {
			geometry.push_back(geo);
			continue;
		}

		const NodeAttribute *const att = dynamic_cast<const NodeAttribute *>(ob);
		if (att) {
			attributes.push_back(att);
			continue;
		}

		DOMWarning("source object for model link is neither Material, NodeAttribute nor Geometry, ignoring", element);
		continue;
	}
}

// ------------------------------------------------------------------------------------------------
bool Model::IsNull() const {
	const std::vector<const NodeAttribute *> &attrs = GetAttributes();
	for (const NodeAttribute *att : attrs) {
		const Null *null_tag = dynamic_cast<const Null *>(att);
		if (null_tag) {
			return true;
		}
	}

	return false;
}

} // namespace FBXDocParser