109 lines
4 KiB
C++
109 lines
4 KiB
C++
/*
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---------------------------------------------------------------------------
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Open Asset Import Library (assimp)
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---------------------------------------------------------------------------
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Copyright (c) 2006-2019, 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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* 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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* 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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* 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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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,
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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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/** @file Implementation of the post processing step to drop face
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* normals for all imported faces.
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*/
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#include "DropFaceNormalsProcess.h"
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#include <assimp/postprocess.h>
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#include <assimp/scene.h>
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#include <assimp/DefaultLogger.hpp>
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#include <assimp/Exceptional.h>
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using namespace Assimp;
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// ------------------------------------------------------------------------------------------------
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// Constructor to be privately used by Importer
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DropFaceNormalsProcess::DropFaceNormalsProcess()
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{
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// nothing to do here
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}
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// ------------------------------------------------------------------------------------------------
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// Destructor, private as well
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DropFaceNormalsProcess::~DropFaceNormalsProcess()
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{
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// nothing to do here
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}
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// ------------------------------------------------------------------------------------------------
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// Returns whether the processing step is present in the given flag field.
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bool DropFaceNormalsProcess::IsActive( unsigned int pFlags) const {
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return (pFlags & aiProcess_DropNormals) != 0;
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}
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// ------------------------------------------------------------------------------------------------
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// Executes the post processing step on the given imported data.
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void DropFaceNormalsProcess::Execute( aiScene* pScene) {
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ASSIMP_LOG_DEBUG("DropFaceNormalsProcess begin");
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if (pScene->mFlags & AI_SCENE_FLAGS_NON_VERBOSE_FORMAT) {
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throw DeadlyImportError("Post-processing order mismatch: expecting pseudo-indexed (\"verbose\") vertices here");
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}
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bool bHas = false;
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for( unsigned int a = 0; a < pScene->mNumMeshes; a++) {
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bHas |= this->DropMeshFaceNormals( pScene->mMeshes[a]);
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}
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if (bHas) {
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ASSIMP_LOG_INFO("DropFaceNormalsProcess finished. "
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"Face normals have been removed");
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} else {
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ASSIMP_LOG_DEBUG("DropFaceNormalsProcess finished. "
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"No normals were present");
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}
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}
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// ------------------------------------------------------------------------------------------------
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// Executes the post processing step on the given imported data.
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bool DropFaceNormalsProcess::DropMeshFaceNormals (aiMesh* pMesh) {
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if (NULL == pMesh->mNormals) {
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return false;
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}
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delete[] pMesh->mNormals;
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pMesh->mNormals = nullptr;
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return true;
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}
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