438 lines
11 KiB
C++
438 lines
11 KiB
C++
/*
|
|
* This program source code file is part of KiCad, a free EDA CAD application.
|
|
*
|
|
* Copyright (C) 2015-2016 Mario Luzeiro <mrluzeiro@ua.pt>
|
|
* Copyright (C) 1992-2016 KiCad Developers, see AUTHORS.txt for contributors.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, you may find one here:
|
|
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
|
|
* or you may search the http://www.gnu.org website for the version 2 license,
|
|
* or you may write to the Free Software Foundation, Inc.,
|
|
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
*/
|
|
|
|
/**
|
|
* @file ccontainer2d.cpp
|
|
* @brief
|
|
*/
|
|
|
|
#include "ccontainer2d.h"
|
|
#include <vector>
|
|
#include <boost/range/algorithm/partition.hpp>
|
|
#include <boost/range/algorithm/nth_element.hpp>
|
|
#include <wx/debug.h>
|
|
|
|
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
// CGENERICCONTAINER2
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
|
|
CGENERICCONTAINER2D::CGENERICCONTAINER2D( OBJECT2D_TYPE aObjType )
|
|
{
|
|
m_bbox.Reset();
|
|
}
|
|
|
|
|
|
void CGENERICCONTAINER2D::Clear()
|
|
{
|
|
m_bbox.Reset();
|
|
|
|
for( LIST_OBJECT2D::iterator ii = m_objects.begin();
|
|
ii != m_objects.end();
|
|
++ii )
|
|
{
|
|
delete *ii;
|
|
*ii = NULL;
|
|
}
|
|
|
|
m_objects.clear();
|
|
}
|
|
|
|
|
|
CGENERICCONTAINER2D::~CGENERICCONTAINER2D()
|
|
{
|
|
Clear();
|
|
}
|
|
|
|
|
|
|
|
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
// CCONTAINER2D
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
|
|
CCONTAINER2D::CCONTAINER2D() : CGENERICCONTAINER2D( OBJ2D_CONTAINER )
|
|
{
|
|
|
|
}
|
|
/*
|
|
|
|
bool CCONTAINER2D::Intersects( const CBBOX2D &aBBox ) const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
|
|
bool CCONTAINER2D::Overlaps( const CBBOX2D &aBBox ) const
|
|
{
|
|
// NOT IMPLEMENTED
|
|
return false;
|
|
}
|
|
|
|
|
|
bool CCONTAINER2D::Intersect( const RAYSEG2D &aSegRay, float *aOutT, SFVEC2F *aNormalOut ) const
|
|
{
|
|
if( !m_bbox.Intersect( aSegRay ) )
|
|
return false;
|
|
|
|
bool hitted = false;
|
|
|
|
for( LIST_OBJECT2D::const_iterator ii = m_objects.begin();
|
|
ii != m_objects.end();
|
|
ii++ )
|
|
{
|
|
const COBJECT2D *object = static_cast<const COBJECT2D *>(*ii);
|
|
|
|
float t;
|
|
SFVEC2F hitNormal;
|
|
if( object->Intersect( aSegRay, &t, &hitNormal ) )
|
|
if( (hitted == false) || (t < *aOutT ) )
|
|
{
|
|
hitted = true;
|
|
*aOutT = t;
|
|
*aNormalOut = hitNormal;
|
|
}
|
|
}
|
|
|
|
return hitted;
|
|
}
|
|
|
|
|
|
INTERSECTION_RESULT CCONTAINER2D::IsBBoxInside( const CBBOX2D &aBBox ) const
|
|
{
|
|
return INTR_MISSES;
|
|
}
|
|
|
|
|
|
bool CCONTAINER2D::IsPointInside( const SFVEC2F &aPoint ) const
|
|
{
|
|
if( !m_bbox.Inside( aPoint ) )
|
|
return false;
|
|
|
|
for( LIST_OBJECT2D::const_iterator ii = m_objects.begin();
|
|
ii != m_objects.end();
|
|
ii++ )
|
|
{
|
|
const COBJECT2D *object = static_cast<const COBJECT2D *>(*ii);
|
|
|
|
if( object->IsPointInside( aPoint ) )
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
*/
|
|
|
|
void CCONTAINER2D::GetListObjectsIntersects( const CBBOX2D & aBBox,
|
|
CONST_LIST_OBJECT2D &aOutList ) const
|
|
{
|
|
// !TODO:
|
|
}
|
|
|
|
|
|
|
|
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
// CBVHCONTAINER2D
|
|
// /////////////////////////////////////////////////////////////////////////////
|
|
|
|
CBVHCONTAINER2D::CBVHCONTAINER2D() : CGENERICCONTAINER2D( OBJ2D_BVHCONTAINER )
|
|
{
|
|
m_isInitialized = false;
|
|
m_bbox.Reset();
|
|
m_elements_to_delete.clear();
|
|
m_Tree = NULL;
|
|
}
|
|
|
|
/*
|
|
bool CBVHCONTAINER2D::Intersects( const CBBOX2D &aBBox ) const
|
|
{
|
|
// !TODO: implement the BVH
|
|
return m_bbox.Intersects( aBBox );
|
|
}
|
|
|
|
|
|
bool CBVHCONTAINER2D::Overlaps( const CBBOX2D &aBBox ) const
|
|
{
|
|
// NOT IMPLEMENTED
|
|
return false;
|
|
}
|
|
|
|
|
|
bool CBVHCONTAINER2D::Intersect( const RAYSEG2D &aSegRay,
|
|
float *aOutT, SFVEC2F *aNormalOut ) const
|
|
{
|
|
// !TODO: implement the BVH
|
|
|
|
if( !m_bbox.Intersect( aSegRay ) )
|
|
return false;
|
|
|
|
bool hitted = false;
|
|
|
|
for( LIST_OBJECT2D::const_iterator ii = m_objects.begin();
|
|
ii != m_objects.end();
|
|
ii++ )
|
|
{
|
|
const COBJECT2D *object = static_cast<const COBJECT2D *>(*ii);
|
|
|
|
float t;
|
|
SFVEC2F hitNormal;
|
|
if( object->Intersect( aSegRay, &t, &hitNormal ) )
|
|
if( (hitted == false) || (t < *aOutT ) )
|
|
{
|
|
hitted = true;
|
|
*aOutT = t;
|
|
*aNormalOut = hitNormal;
|
|
}
|
|
}
|
|
|
|
return hitted;
|
|
}
|
|
|
|
|
|
INTERSECTION_RESULT CBVHCONTAINER2D::IsBBoxInside( const CBBOX2D &aBBox ) const
|
|
{
|
|
return INTR_MISSES;
|
|
}
|
|
|
|
|
|
bool CBVHCONTAINER2D::IsPointInside( const SFVEC2F &aPoint ) const
|
|
{
|
|
// !TODO: implement the BVH
|
|
|
|
if( !m_bbox.Inside( aPoint ) )
|
|
return false;
|
|
|
|
for( LIST_OBJECT2D::const_iterator ii = m_objects.begin();
|
|
ii != m_objects.end();
|
|
ii++ )
|
|
{
|
|
const COBJECT2D *object = static_cast<const COBJECT2D *>(*ii);
|
|
|
|
if( object->IsPointInside( aPoint ) )
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
*/
|
|
|
|
void CBVHCONTAINER2D::destroy()
|
|
{
|
|
for( std::list<BVH_CONTAINER_NODE_2D *>::iterator ii = m_elements_to_delete.begin();
|
|
ii != m_elements_to_delete.end();
|
|
++ii )
|
|
{
|
|
delete *ii;
|
|
*ii = NULL;
|
|
}
|
|
m_elements_to_delete.clear();
|
|
|
|
m_isInitialized = false;
|
|
}
|
|
|
|
|
|
CBVHCONTAINER2D::~CBVHCONTAINER2D()
|
|
{
|
|
destroy();
|
|
}
|
|
|
|
|
|
#define BVH_CONTAINER2D_MAX_OBJ_PER_LEAF 4
|
|
|
|
|
|
void CBVHCONTAINER2D::BuildBVH()
|
|
{
|
|
if( m_isInitialized )
|
|
destroy();
|
|
|
|
if( m_objects.empty() )
|
|
{
|
|
return;
|
|
}
|
|
|
|
m_isInitialized = true;
|
|
m_Tree = new BVH_CONTAINER_NODE_2D;
|
|
|
|
m_elements_to_delete.push_back( m_Tree );
|
|
m_Tree->m_BBox = m_bbox;
|
|
|
|
for( LIST_OBJECT2D::const_iterator ii = m_objects.begin();
|
|
ii != m_objects.end();
|
|
++ii )
|
|
{
|
|
m_Tree->m_LeafList.push_back( static_cast<const COBJECT2D *>(*ii) );
|
|
}
|
|
|
|
recursiveBuild_MIDDLE_SPLIT( m_Tree );
|
|
}
|
|
|
|
|
|
// Based on a blog post by VADIM KRAVCENKO
|
|
// http://www.vadimkravcenko.com/bvh-tree-building
|
|
// Implements:
|
|
|
|
// "Split in the middle of the longest Axis"
|
|
// "Creates a binary tree with Top-Down approach.
|
|
// Fastest BVH building, but least [speed] accuracy."
|
|
|
|
static bool sortByCentroid_X( const COBJECT2D *a, const COBJECT2D *b )
|
|
{
|
|
return a->GetCentroid()[0] < b->GetCentroid()[0];
|
|
}
|
|
|
|
static bool sortByCentroid_Y( const COBJECT2D *a, const COBJECT2D *b )
|
|
{
|
|
return a->GetCentroid()[0] < b->GetCentroid()[0];
|
|
}
|
|
|
|
static bool sortByCentroid_Z( const COBJECT2D *a, const COBJECT2D *b )
|
|
{
|
|
return a->GetCentroid()[0] < b->GetCentroid()[0];
|
|
}
|
|
|
|
void CBVHCONTAINER2D::recursiveBuild_MIDDLE_SPLIT( BVH_CONTAINER_NODE_2D *aNodeParent )
|
|
{
|
|
wxASSERT( aNodeParent != NULL );
|
|
wxASSERT( aNodeParent->m_BBox.IsInitialized() == true );
|
|
wxASSERT( aNodeParent->m_LeafList.size() > 0 );
|
|
|
|
if( aNodeParent->m_LeafList.size() > BVH_CONTAINER2D_MAX_OBJ_PER_LEAF )
|
|
{
|
|
// Create Leaf Nodes
|
|
BVH_CONTAINER_NODE_2D *leftNode = new BVH_CONTAINER_NODE_2D;
|
|
BVH_CONTAINER_NODE_2D *rightNode = new BVH_CONTAINER_NODE_2D;
|
|
m_elements_to_delete.push_back( leftNode );
|
|
m_elements_to_delete.push_back( rightNode );
|
|
|
|
leftNode->m_BBox.Reset();
|
|
rightNode->m_BBox.Reset();
|
|
leftNode->m_LeafList.clear();
|
|
rightNode->m_LeafList.clear();
|
|
|
|
// Decide wich axis to split
|
|
const unsigned int axis_to_split = aNodeParent->m_BBox.MaxDimension();
|
|
|
|
// Divide the objects
|
|
switch( axis_to_split )
|
|
{
|
|
case 0: aNodeParent->m_LeafList.sort( sortByCentroid_X );
|
|
case 1: aNodeParent->m_LeafList.sort( sortByCentroid_Y );
|
|
case 2: aNodeParent->m_LeafList.sort( sortByCentroid_Z );
|
|
}
|
|
|
|
unsigned int i = 0;
|
|
|
|
for( CONST_LIST_OBJECT2D::const_iterator ii = aNodeParent->m_LeafList.begin();
|
|
ii != aNodeParent->m_LeafList.end();
|
|
++ii )
|
|
{
|
|
const COBJECT2D *object = static_cast<const COBJECT2D *>(*ii);
|
|
|
|
if( i < (aNodeParent->m_LeafList.size() / 2 ) )
|
|
{
|
|
leftNode->m_BBox.Union( object->GetBBox() );
|
|
leftNode->m_LeafList.push_back( object );
|
|
}
|
|
else
|
|
{
|
|
rightNode->m_BBox.Union( object->GetBBox() );
|
|
rightNode->m_LeafList.push_back( object );
|
|
}
|
|
|
|
i++;
|
|
}
|
|
|
|
wxASSERT( leftNode->m_LeafList.size() > 0 );
|
|
wxASSERT( rightNode->m_LeafList.size() > 0 );
|
|
wxASSERT( ( leftNode->m_LeafList.size() + rightNode->m_LeafList.size() ) ==
|
|
aNodeParent->m_LeafList.size() );
|
|
|
|
aNodeParent->m_Children[0] = leftNode;
|
|
aNodeParent->m_Children[1] = rightNode;
|
|
aNodeParent->m_LeafList.clear();
|
|
|
|
recursiveBuild_MIDDLE_SPLIT( leftNode );
|
|
recursiveBuild_MIDDLE_SPLIT( rightNode );
|
|
}
|
|
else
|
|
{
|
|
// It is a Leaf
|
|
aNodeParent->m_Children[0] = NULL;
|
|
aNodeParent->m_Children[1] = NULL;
|
|
}
|
|
}
|
|
|
|
|
|
void CBVHCONTAINER2D::GetListObjectsIntersects( const CBBOX2D &aBBox,
|
|
CONST_LIST_OBJECT2D &aOutList ) const
|
|
{
|
|
wxASSERT( aBBox.IsInitialized() == true );
|
|
wxASSERT( m_isInitialized == true );
|
|
|
|
aOutList.clear();
|
|
|
|
if( m_Tree )
|
|
recursiveGetListObjectsIntersects( m_Tree, aBBox, aOutList );
|
|
}
|
|
|
|
|
|
void CBVHCONTAINER2D::recursiveGetListObjectsIntersects( const BVH_CONTAINER_NODE_2D *aNode,
|
|
const CBBOX2D & aBBox,
|
|
CONST_LIST_OBJECT2D &aOutList ) const
|
|
{
|
|
wxASSERT( aNode != NULL );
|
|
wxASSERT( aBBox.IsInitialized() == true );
|
|
|
|
if( aNode->m_BBox.Intersects( aBBox ) )
|
|
{
|
|
if( !aNode->m_LeafList.empty() )
|
|
{
|
|
wxASSERT( aNode->m_Children[0] == NULL );
|
|
wxASSERT( aNode->m_Children[1] == NULL );
|
|
|
|
// Leaf
|
|
for( CONST_LIST_OBJECT2D::const_iterator ii = aNode->m_LeafList.begin();
|
|
ii != aNode->m_LeafList.end();
|
|
++ii )
|
|
{
|
|
const COBJECT2D *obj = static_cast<const COBJECT2D *>(*ii);
|
|
|
|
if( obj->Intersects( aBBox ) )
|
|
aOutList.push_back( obj );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
wxASSERT( aNode->m_Children[0] != NULL );
|
|
wxASSERT( aNode->m_Children[1] != NULL );
|
|
|
|
// Node
|
|
recursiveGetListObjectsIntersects( aNode->m_Children[0], aBBox, aOutList );
|
|
recursiveGetListObjectsIntersects( aNode->m_Children[1], aBBox, aOutList );
|
|
}
|
|
}
|
|
}
|