binaries/assimp-3.1.1/code/FBXAnimation.cpp

/*
Open Asset Import Library (assimp)
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All rights reserved.

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/** @file  FBXAnimation.cpp
 *  @brief Assimp::FBX::AnimationCurve, Assimp::FBX::AnimationCurveNode, 
 *         Assimp::FBX::AnimationLayer, Assimp::FBX::AnimationStack 
 */
#include "AssimpPCH.h"

#ifndef ASSIMP_BUILD_NO_FBX_IMPORTER

#include "FBXParser.h"
#include "FBXDocument.h"
#include "FBXImporter.h"
#include "FBXImportSettings.h"
#include "FBXDocumentUtil.h"
#include "FBXProperties.h"

namespace Assimp {
namespace FBX {

	using namespace Util;

// ------------------------------------------------------------------------------------------------
AnimationCurve::AnimationCurve(uint64_t id, const Element& element, const std::string& name, const Document& doc)
: Object(id, element, name)
{
	const Scope& sc = GetRequiredScope(element);
	const Element& KeyTime = GetRequiredElement(sc,"KeyTime");
	const Element& KeyValueFloat = GetRequiredElement(sc,"KeyValueFloat");

	ParseVectorDataArray(keys, KeyTime);
	ParseVectorDataArray(values, KeyValueFloat);

	if(keys.size() != values.size()) {
		DOMError("the number of key times does not match the number of keyframe values",&KeyTime);
	}
	
	// check if the key times are well-ordered
	if(!std::equal(keys.begin(), keys.end() - 1, keys.begin() + 1, std::less<KeyTimeList::value_type>())) {
		DOMError("the keyframes are not in ascending order",&KeyTime);
	}

	const Element* KeyAttrDataFloat = sc["KeyAttrDataFloat"];
	if(KeyAttrDataFloat) {
		ParseVectorDataArray(attributes, *KeyAttrDataFloat);
	}

	const Element* KeyAttrFlags = sc["KeyAttrFlags"];
	if(KeyAttrFlags) {
		ParseVectorDataArray(flags, *KeyAttrFlags);
	}
}


// ------------------------------------------------------------------------------------------------
AnimationCurve::~AnimationCurve()
{

}


// ------------------------------------------------------------------------------------------------
AnimationCurveNode::AnimationCurveNode(uint64_t id, const Element& element, const std::string& name, const Document& doc, 
	const char* const * target_prop_whitelist /*= NULL*/, size_t whitelist_size /*= 0*/)
: Object(id, element, name)
, target()
, doc(doc)
{
	const Scope& sc = GetRequiredScope(element);
	
	// find target node
	const char* whitelist[] = {"Model","NodeAttribute"};
	const std::vector<const Connection*>& conns = doc.GetConnectionsBySourceSequenced(ID(),whitelist,2);

	BOOST_FOREACH(const Connection* con, conns) {

		// link should go for a property
		if (!con->PropertyName().length()) {
			continue;
		}

		if(target_prop_whitelist) {
			const char* const s = con->PropertyName().c_str();
			bool ok = false;
			for (size_t i = 0; i < whitelist_size; ++i) {
				if (!strcmp(s, target_prop_whitelist[i])) {
					ok = true;
					break;
				}
			}

			if (!ok) {
				throw std::range_error("AnimationCurveNode target property is not in whitelist");
			}
		}

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

		// XXX support constraints as DOM class
		//ai_assert(dynamic_cast<const Model*>(ob) || dynamic_cast<const NodeAttribute*>(ob));
		target = ob; 
		if(!target) {
			continue;
		}

		prop = con->PropertyName();
		break;
	}

	if(!target) {
		DOMWarning("failed to resolve target Model/NodeAttribute/Constraint for AnimationCurveNode",&element);
	}

	props = GetPropertyTable(doc,"AnimationCurveNode.FbxAnimCurveNode",element,sc,false);
}


// ------------------------------------------------------------------------------------------------
AnimationCurveNode::~AnimationCurveNode()
{

}


// ------------------------------------------------------------------------------------------------
const AnimationCurveMap& AnimationCurveNode::Curves() const
{
	if(curves.empty()) {
		// resolve attached animation curves
		const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"AnimationCurve");

		BOOST_FOREACH(const Connection* con, conns) {

			// link should go for a property
			if (!con->PropertyName().length()) {
				continue;
			}

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

			const AnimationCurve* const anim = dynamic_cast<const AnimationCurve*>(ob);
			if(!anim) {
				DOMWarning("source object for ->AnimationCurveNode link is not an AnimationCurve",&element);
				continue;
			}

			curves[con->PropertyName()] = anim;
		}
	}

	return curves;
}


// ------------------------------------------------------------------------------------------------
AnimationLayer::AnimationLayer(uint64_t id, const Element& element, const std::string& name, const Document& doc)
: Object(id, element, name)
, doc(doc)
{
	const Scope& sc = GetRequiredScope(element);

	// note: the props table here bears little importance and is usually absent
	props = GetPropertyTable(doc,"AnimationLayer.FbxAnimLayer",element,sc, true);
}


// ------------------------------------------------------------------------------------------------
AnimationLayer::~AnimationLayer()
{

}


// ------------------------------------------------------------------------------------------------
AnimationCurveNodeList AnimationLayer::Nodes(const char* const * target_prop_whitelist /*= NULL*/, 
	size_t whitelist_size /*= 0*/) const
{
	AnimationCurveNodeList nodes;

	// resolve attached animation nodes
	const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"AnimationCurveNode");
	nodes.reserve(conns.size());

	BOOST_FOREACH(const Connection* con, conns) {

		// link should not go to a property
		if (con->PropertyName().length()) {
			continue;
		}

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

		const AnimationCurveNode* const anim = dynamic_cast<const AnimationCurveNode*>(ob);
		if(!anim) {
			DOMWarning("source object for ->AnimationLayer link is not an AnimationCurveNode",&element);
			continue;
		}

		if(target_prop_whitelist) {
			const char* s = anim->TargetProperty().c_str();
			bool ok = false;
			for (size_t i = 0; i < whitelist_size; ++i) {
				if (!strcmp(s, target_prop_whitelist[i])) {
					ok = true;
					break;
				}
			}
			if(!ok) {
				continue;
			}
		}
		nodes.push_back(anim);
	}

	return nodes; // pray for NRVO
}

// ------------------------------------------------------------------------------------------------
AnimationStack::AnimationStack(uint64_t id, const Element& element, const std::string& name, const Document& doc)
: Object(id, element, name)
{
	const Scope& sc = GetRequiredScope(element);

	// note: we don't currently use any of these properties so we shouldn't bother if it is missing
	props = GetPropertyTable(doc,"AnimationStack.FbxAnimStack",element,sc, true);

	// resolve attached animation layers
	const std::vector<const Connection*>& conns = doc.GetConnectionsByDestinationSequenced(ID(),"AnimationLayer");
	layers.reserve(conns.size());

	BOOST_FOREACH(const Connection* con, conns) {

		// link should not go to a property
		if (con->PropertyName().length()) {
			continue;
		}

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

		const AnimationLayer* const anim = dynamic_cast<const AnimationLayer*>(ob);
		if(!anim) {
			DOMWarning("source object for ->AnimationStack link is not an AnimationLayer",&element);
			continue;
		}
		layers.push_back(anim);
	}
}


// ------------------------------------------------------------------------------------------------
AnimationStack::~AnimationStack()
{

}

} //!FBX
} //!Assimp

#endif