127 lines
3.7 KiB
C++
127 lines
3.7 KiB
C++
/*
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* This program source code file is part of KiCad, a free EDA CAD application.
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*
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* Copyright (C) 2015-2016 Mario Luzeiro <mrluzeiro@ua.pt>
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* Copyright (C) 1992-2016 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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/**
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* @file plane_3d.cpp
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*/
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#include "plane_3d.h"
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XY_PLANE::XY_PLANE( const BBOX_3D& aBBox ) : OBJECT_3D( OBJECT_3D_TYPE::XYPLANE )
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{
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m_centerPoint = aBBox.GetCenter();
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m_centroid = m_centerPoint;
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m_bbox.Reset();
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m_bbox.Set( aBBox );
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m_xsize = aBBox.GetExtent().x;
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m_ysize = aBBox.GetExtent().y;
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m_xsize_inv2 = 1.0f / ( 2.0f * m_xsize );
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m_ysize_inv2 = 1.0f / ( 2.0f * m_ysize );
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}
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XY_PLANE::XY_PLANE( SFVEC3F aCenterPoint, float aXSize, float aYSize )
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: OBJECT_3D( OBJECT_3D_TYPE::XYPLANE )
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{
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m_centerPoint = aCenterPoint;
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m_xsize = aXSize;
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m_ysize = aYSize;
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m_xsize_inv2 = 1.0f / ( 2.0f * aXSize );
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m_ysize_inv2 = 1.0f / ( 2.0f * aYSize );
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m_bbox.Set( SFVEC3F( aCenterPoint.x - aXSize / 2.0f, aCenterPoint.y - aYSize / 2.0f,
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aCenterPoint.z ),
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SFVEC3F( aCenterPoint.x + aXSize / 2.0f, aCenterPoint.y + aYSize / 2.0f,
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aCenterPoint.z ) );
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m_centroid = aCenterPoint;
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}
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bool XY_PLANE::Intersect( const RAY& aRay, HITINFO& aHitInfo ) const
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{
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const float t = (m_centerPoint.z - aRay.m_Origin.z) * aRay.m_InvDir.z;
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if( ( t < FLT_EPSILON ) || ( t >= aHitInfo.m_tHit ) )
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return false;
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const float vSU = t * aRay.m_Dir.x + aRay.m_Origin.x - m_centerPoint.x;
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if( (vSU < -m_xsize) || (vSU > m_xsize) )
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return false;
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const float vSV = t * aRay.m_Dir.y + aRay.m_Origin.y - m_centerPoint.y;
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if( ( vSV < -m_ysize ) || ( vSV > m_ysize ) )
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return false;
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aHitInfo.m_tHit = t;
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aHitInfo.m_HitPoint = aRay.at( t );
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aHitInfo.pHitObject = this;
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if( aRay.m_dirIsNeg[2] )
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aHitInfo.m_HitNormal = SFVEC3F( 0.0f, 0.0f, 1.0f );
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else
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aHitInfo.m_HitNormal = SFVEC3F( 0.0f, 0.0f,-1.0f );
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m_material->PerturbeNormal( aHitInfo.m_HitNormal, aRay, aHitInfo );
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return true;
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}
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bool XY_PLANE::IntersectP(const RAY& aRay, float aMaxDistance ) const
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{
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const float t = ( m_centerPoint.z - aRay.m_Origin.z ) * aRay.m_InvDir.z;
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if( ( t < FLT_EPSILON ) || ( t >= aMaxDistance ) )
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return false;
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const float vSU = t * aRay.m_Dir.x + aRay.m_Origin.x - m_centerPoint.x;
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if( (vSU < -m_xsize) || (vSU > m_xsize) )
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return false;
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const float vSV = t * aRay.m_Dir.y + aRay.m_Origin.y - m_centerPoint.y;
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if( ( vSV < -m_ysize ) || ( vSV > m_ysize ) )
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return false;
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return true;
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}
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bool XY_PLANE::Intersects( const BBOX_3D& aBBox ) const
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{
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return m_bbox.Intersects( aBBox );
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}
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SFVEC3F XY_PLANE::GetDiffuseColor( const HITINFO& aHitInfo ) const
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{
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(void)aHitInfo; // unused
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return m_diffusecolor;
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}
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