110 lines
4.0 KiB
C++
110 lines
4.0 KiB
C++
/*
|
|
---------------------------------------------------------------------------
|
|
Open Asset Import Library (assimp)
|
|
---------------------------------------------------------------------------
|
|
|
|
Copyright (c) 2006-2019, assimp team
|
|
|
|
|
|
|
|
All rights reserved.
|
|
|
|
Redistribution and use of this software in source and binary forms,
|
|
with or without modification, are permitted provided that the following
|
|
conditions are met:
|
|
|
|
* 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
|
|
materials provided with the distribution.
|
|
|
|
* 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,
|
|
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
---------------------------------------------------------------------------
|
|
*/
|
|
|
|
/** @file Implementation of the post processing step to drop face
|
|
* normals for all imported faces.
|
|
*/
|
|
|
|
|
|
#include "DropFaceNormalsProcess.h"
|
|
#include <assimp/postprocess.h>
|
|
#include <assimp/scene.h>
|
|
#include <assimp/DefaultLogger.hpp>
|
|
#include <assimp/Exceptional.h>
|
|
|
|
using namespace Assimp;
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Constructor to be privately used by Importer
|
|
DropFaceNormalsProcess::DropFaceNormalsProcess()
|
|
{
|
|
// nothing to do here
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Destructor, private as well
|
|
DropFaceNormalsProcess::~DropFaceNormalsProcess()
|
|
{
|
|
// nothing to do here
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Returns whether the processing step is present in the given flag field.
|
|
bool DropFaceNormalsProcess::IsActive( unsigned int pFlags) const {
|
|
return (pFlags & aiProcess_DropNormals) != 0;
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Executes the post processing step on the given imported data.
|
|
void DropFaceNormalsProcess::Execute( aiScene* pScene) {
|
|
ASSIMP_LOG_DEBUG("DropFaceNormalsProcess begin");
|
|
|
|
if (pScene->mFlags & AI_SCENE_FLAGS_NON_VERBOSE_FORMAT) {
|
|
throw DeadlyImportError("Post-processing order mismatch: expecting pseudo-indexed (\"verbose\") vertices here");
|
|
}
|
|
|
|
bool bHas = false;
|
|
for( unsigned int a = 0; a < pScene->mNumMeshes; a++) {
|
|
bHas |= this->DropMeshFaceNormals( pScene->mMeshes[a]);
|
|
}
|
|
if (bHas) {
|
|
ASSIMP_LOG_INFO("DropFaceNormalsProcess finished. "
|
|
"Face normals have been removed");
|
|
} else {
|
|
ASSIMP_LOG_DEBUG("DropFaceNormalsProcess finished. "
|
|
"No normals were present");
|
|
}
|
|
}
|
|
|
|
// ------------------------------------------------------------------------------------------------
|
|
// Executes the post processing step on the given imported data.
|
|
bool DropFaceNormalsProcess::DropMeshFaceNormals (aiMesh* pMesh) {
|
|
if (NULL == pMesh->mNormals) {
|
|
return false;
|
|
}
|
|
|
|
delete[] pMesh->mNormals;
|
|
pMesh->mNormals = nullptr;
|
|
return true;
|
|
}
|