assimp.assimp/code/ScaleProcess.cpp

/*
Open Asset Import Library (assimp)
----------------------------------------------------------------------

Copyright (c) 2006-2018, assimp team


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*/
#ifndef ASSIMP_BUILD_NO_GLOBALSCALE_PROCESS

#include "ScaleProcess.h"

#include <assimp/scene.h>
#include <assimp/postprocess.h>

namespace Assimp {

ScaleProcess::ScaleProcess()
: BaseProcess()
, mScale( AI_CONFIG_GLOBAL_SCALE_FACTOR_DEFAULT ) {
    // empty
}

ScaleProcess::~ScaleProcess() {
    // empty
}

void ScaleProcess::setScale( ai_real scale ) {
    mScale = scale;
}

ai_real ScaleProcess::getScale() const {
    return mScale;
}

bool ScaleProcess::IsActive( unsigned int pFlags ) const {
    return ( pFlags & aiProcess_GlobalScale ) != 0;
}

void ScaleProcess::SetupProperties( const Importer* pImp ) {
    mScale = pImp->GetPropertyFloat( AI_CONFIG_GLOBAL_SCALE_FACTOR_KEY, 0 );
}

void ScaleProcess::Execute( aiScene* pScene ) {
    if ( nullptr == pScene ) {
        return;
    }

    if ( nullptr == pScene->mRootNode ) {
        return;
    }

    traverseNodes( pScene->mRootNode );
}

void ScaleProcess::traverseNodes( aiNode *node ) {
    applyScaling( node );
}

void ScaleProcess::applyScaling( aiNode *currentNode ) {
    if ( nullptr != currentNode ) {
        currentNode->mTransformation.a1 = currentNode->mTransformation.a1 * mScale;
        currentNode->mTransformation.b2 = currentNode->mTransformation.b2 * mScale;
        currentNode->mTransformation.c3 = currentNode->mTransformation.c3 * mScale;
    }
}

} // Namespace Assimp

#endif // !! ASSIMP_BUILD_NO_GLOBALSCALE_PROCESS