/*
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Free Asset Import Library (ASSIMP)
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*/
/** @file Implementation of the post processing step tokill mesh normals
*/
#include "KillNormalsProcess.h"
#include "DefaultLogger.h"
#include "../include/aiPostProcess.h"
#include "../include/aiMesh.h"
#include "../include/aiScene.h"

using namespace Assimp;

// Constructor to be privately used by Importer
KillNormalsProcess::KillNormalsProcess()
{
}

// Destructor, private as well
KillNormalsProcess::~KillNormalsProcess()
{
	// nothing to do here
}

// -------------------------------------------------------------------
// Returns whether the processing step is present in the given flag field.
bool KillNormalsProcess::IsActive( unsigned int pFlags) const
{
	return (pFlags & aiProcess_KillNormals) != 0;
}

// -------------------------------------------------------------------
// Executes the post processing step on the given imported data.
void KillNormalsProcess::Execute( aiScene* pScene)
{
	DefaultLogger::get()->debug("KillNormalsProcess begin");

	bool bHas = false;
	for( unsigned int a = 0; a < pScene->mNumMeshes; a++)
	{
		if(	this->KillMeshNormals( pScene->mMeshes[a]))
			bHas = true;
	}
	if (bHas)DefaultLogger::get()->info("KillNormalsProcess finished. Found normals to kill");
	else DefaultLogger::get()->debug("KillNormalsProcess finished. There was nothing to do.");

}

// -------------------------------------------------------------------
// Executes the post processing step on the given imported data.
bool KillNormalsProcess::KillMeshNormals(aiMesh* pMesh)
{
	if (!pMesh->mNormals)return false;
	delete[] pMesh->mNormals;
	pMesh->mNormals = NULL;
	return true;
}