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0b2d4d4879
Recommendation is to avoid using the year nomenclature as this information is already encoded in the git repo. Avoids needing to repeatly update. Also updates AUTHORS.txt from current repo with contributor names
146 lines
4.3 KiB
C++
146 lines
4.3 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 The 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 triangle_2d.cpp
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*/
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#include "triangle_2d.h"
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#include "../ray.h"
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#include <wx/debug.h>
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#include <geometry/polygon_triangulation.h>
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#include "../../../3d_fastmath.h"
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TRIANGLE_2D::TRIANGLE_2D( const SFVEC2F& aV1, const SFVEC2F& aV2, const SFVEC2F& aV3,
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const BOARD_ITEM& aBoardItem ) :
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OBJECT_2D( OBJECT_2D_TYPE::TRIANGLE, aBoardItem )
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{
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p1 = aV1;
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p2 = aV2;
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p3 = aV3;
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// Pre-Calc values
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m_inv_denominator = 1.0f / ( ( p2.y - p3.y ) * ( p1.x - p3.x ) +
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( p3.x - p2.x ) * ( p1.y - p3.y ) );
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m_p2y_minus_p3y = ( p2.y - p3.y );
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m_p3x_minus_p2x = ( p3.x - p2.x );
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m_p3y_minus_p1y = ( p3.y - p1.y );
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m_p1x_minus_p3x = ( p1.x - p3.x );
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m_bbox.Reset();
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m_bbox.Union( aV1 );
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m_bbox.Union( aV2 );
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m_bbox.Union( aV3 );
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m_bbox.ScaleNextUp();
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m_centroid = m_bbox.GetCenter();
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wxASSERT( m_bbox.IsInitialized() );
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}
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bool TRIANGLE_2D::Intersects( const BBOX_2D& aBBox ) const
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{
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if( !m_bbox.Intersects( aBBox ) )
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return false;
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//!TODO: Optimize
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return true;
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}
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bool TRIANGLE_2D::Overlaps( const BBOX_2D& aBBox ) const
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{
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// NOT IMPLEMENTED
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return false;
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}
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bool TRIANGLE_2D::Intersect( const RAYSEG2D& aSegRay, float* aOutT, SFVEC2F* aNormalOut ) const
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{
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return false;
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}
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INTERSECTION_RESULT TRIANGLE_2D::IsBBoxInside( const BBOX_2D& aBBox ) const
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{
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if( !m_bbox.Intersects( aBBox ) )
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return INTERSECTION_RESULT::MISSES;
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// !TODO:
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return INTERSECTION_RESULT::MISSES;
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}
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bool TRIANGLE_2D::IsPointInside( const SFVEC2F& aPoint ) const
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{
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// http://totologic.blogspot.co.uk/2014/01/accurate-point-in-triangle-test.html
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SFVEC2F point_minus_p3 = aPoint - p3;
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// barycentric coordinate system
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const float a = ( m_p2y_minus_p3y * point_minus_p3.x +
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m_p3x_minus_p2x * point_minus_p3.y ) * m_inv_denominator;
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if( 0.0f > a || a > 1.0f )
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return false;
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const float b = ( m_p3y_minus_p1y * point_minus_p3.x +
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m_p1x_minus_p3x * point_minus_p3.y ) * m_inv_denominator;
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if( 0.0f > b || b > 1.0f )
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return false;
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const float c = 1.0f - a - b;
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return 0.0f <= c && c <= 1.0f;
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}
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void ConvertPolygonToTriangles( const SHAPE_POLY_SET& aPolyList, CONTAINER_2D_BASE& aDstContainer,
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float aBiuTo3dUnitsScale, const BOARD_ITEM& aBoardItem )
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{
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VECTOR2I a;
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VECTOR2I b;
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VECTOR2I c;
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const_cast<SHAPE_POLY_SET&>( aPolyList ).CacheTriangulation( false );
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const double conver_d = (double)aBiuTo3dUnitsScale;
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for( unsigned int j = 0; j < aPolyList.TriangulatedPolyCount(); j++ )
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{
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const SHAPE_POLY_SET::TRIANGULATED_POLYGON* triPoly = aPolyList.TriangulatedPolygon( j );
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for( size_t i = 0; i < triPoly->GetTriangleCount(); i++ )
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{
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triPoly->GetTriangle( i, a, b, c );
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aDstContainer.Add( new TRIANGLE_2D( SFVEC2F( a.x * conver_d, -a.y * conver_d ),
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SFVEC2F( b.x * conver_d, -b.y * conver_d ),
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SFVEC2F( c.x * conver_d, -c.y * conver_d ),
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aBoardItem ) );
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}
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}
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}
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