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75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
/*
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* Copyright (c) Contributors to the Open 3D Engine Project. For complete copyright and license terms please see the LICENSE at the root of this distribution.
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*
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* SPDX-License-Identifier: Apache-2.0 OR MIT
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*
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*/
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// Description : Calculate the reference frame for sub-object selections.
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#include "EditorDefs.h"
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#include "SubObjectSelectionReferenceFrameCalculator.h"
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SubObjectSelectionReferenceFrameCalculator::SubObjectSelectionReferenceFrameCalculator(ESubObjElementType selectionType)
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: m_anySelected(false)
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, pos(0.0f, 0.0f, 0.0f)
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, normal(0.0f, 0.0f, 0.0f)
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, nNormals(0)
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, selectionType(selectionType)
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, bUseExplicitFrame(false)
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, bExplicitAnySelected(false)
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{
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}
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void SubObjectSelectionReferenceFrameCalculator::SetExplicitFrame(bool bAnySelected, const Matrix34& refFrame)
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{
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this->m_refFrame = refFrame;
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this->bUseExplicitFrame = true;
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this->bExplicitAnySelected = bAnySelected;
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}
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bool SubObjectSelectionReferenceFrameCalculator::GetFrame(Matrix34& refFrame)
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{
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if (this->bUseExplicitFrame)
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{
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refFrame = this->m_refFrame;
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return this->bExplicitAnySelected;
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}
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else
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{
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refFrame.SetIdentity();
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if (this->nNormals > 0)
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{
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this->normal = this->normal / this->nNormals;
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if (!this->normal.IsZero())
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{
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this->normal.Normalize();
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}
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// Average position.
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this->pos = this->pos / this->nNormals;
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refFrame.SetTranslation(this->pos);
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}
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if (this->m_anySelected)
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{
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if (!this->normal.IsZero())
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{
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Vec3 xAxis(1, 0, 0), yAxis(0, 1, 0), zAxis(0, 0, 1);
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if (this->normal.IsEquivalent(zAxis) || normal.IsEquivalent(-zAxis))
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{
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zAxis = xAxis;
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}
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xAxis = this->normal.Cross(zAxis).GetNormalized();
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yAxis = xAxis.Cross(this->normal).GetNormalized();
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refFrame.SetFromVectors(xAxis, yAxis, normal, pos);
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}
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}
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return m_anySelected;
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}
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}
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