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- GNU AFFERO GENERAL PUBLIC LICENSE
- Version 3, 19 November 2007
-
- Copyright (C) 2007 Free Software Foundation, Inc.
- Everyone is permitted to copy and distribute verbatim copies
- of this license document, but changing it is not allowed.
-
- Preamble
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- The GNU Affero General Public License is a free, copyleft license for
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- An older license, called the Affero General Public License and
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-an absolute waiver of all civil liability in connection with the
-Program, unless a warranty or assumption of liability accompanies a
-copy of the Program in return for a fee.
-
- END OF TERMS AND CONDITIONS
-
- How to Apply These Terms to Your New Programs
-
- If you develop a new program, and you want it to be of the greatest
-possible use to the public, the best way to achieve this is to make it
-free software which everyone can redistribute and change under these terms.
-
- To do so, attach the following notices to the program. It is safest
-to attach them to the start of each source file to most effectively
-state the exclusion of warranty; and each file should have at least
-the "copyright" line and a pointer to where the full notice is found.
-
-
- Copyright (C)
-
- This program is free software: you can redistribute it and/or modify
- it under the terms of the GNU Affero General Public License as published by
- the Free Software Foundation, either version 3 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 Affero General Public License for more details.
-
- You should have received a copy of the GNU Affero General Public License
- along with this program. If not, see .
-
-Also add information on how to contact you by electronic and paper mail.
-
- If your software can interact with users remotely through a computer
-network, you should also make sure that it provides a way for users to
-get its source. For example, if your program is a web application, its
-interface could display a "Source" link that leads users to an archive
-of the code. There are many ways you could offer source, and different
-solutions will be better for different programs; see section 13 for the
-specific requirements.
-
- You should also get your employer (if you work as a programmer) or school,
-if any, to sign a "copyright disclaimer" for the program, if necessary.
-For more information on this, and how to apply and follow the GNU AGPL, see
-.
diff --git a/LICENSE.README b/LICENSE.README
index fefa0fcd17..c19d2bdf03 100644
--- a/LICENSE.README
+++ b/LICENSE.README
@@ -1,22 +1,20 @@
The majority of KiCad's source code is developed and distributed under the terms
of the GPLv3 or later. However, It does include some third-party code licensed
-under AGPLv3 or later as well as sections licensed under the BOOST license v1.0,
-the ISC license and the MIT license.
+under licensed under the BOOST license v1.0, the ISC license and the MIT license.
These licenses are compatible, but a combined works as is will be governed under
-the terms of the AGPLv3 (or later). This includes any binary distribution of the
+the terms of the GPLv3 (or later). This includes any binary distribution of the
KiCad EDA suite by the KiCad project or any third party, e.g. Linux distributor.
You are free to use the *sources* under the terms of their respective licenses.
-Licensed under AGPLv3 (or later):
-- TTL [https://www.sintef.no/projectweb/geometry-toolkits/ttl/], sources in include/ttl/*
Licensed under BOOSTv1:
- libcontext [https://github.com/boostorg/context] in thirdparty/libcontext
- clipper in thirdparty/clipper
Licensed under ISC:
- portions of code in include/geometry/polygon_triangulation.h
Licensed under MIT:
+- delaunator in thirdparty/delaunator
- tinyspline_lib in thirdparty/tinyspline_lib
- nlohmann/json in thirdparty/nlohmann_json
- nlohmann/fifo_map in thirdparty/nlohmann_json
diff --git a/common/CMakeLists.txt b/common/CMakeLists.txt
index ae3fb62184..08e50f575b 100644
--- a/common/CMakeLists.txt
+++ b/common/CMakeLists.txt
@@ -67,7 +67,6 @@ set( GAL_SRCS
add_library( gal STATIC ${GAL_SRCS} )
target_link_libraries( gal
- ttl
kimath
bitmaps
${GLEW_LIBRARIES}
@@ -511,14 +510,17 @@ set_source_files_properties( ${PCB_COMMON_SRCS} PROPERTIES
add_library( pcbcommon STATIC ${PCB_COMMON_SRCS} )
target_include_directories( pcbcommon PUBLIC
+ $
)
target_link_libraries( pcbcommon PUBLIC
common
+ delaunator
kimath
kiplatform
)
+add_dependencies( pcbcommon delaunator )
# auto-generate netlist_lexer.h and netlist_keywords.cpp
make_lexer(
diff --git a/common/dialog_about/AboutDialog_main.cpp b/common/dialog_about/AboutDialog_main.cpp
index c3daa594c3..a61d02cb31 100644
--- a/common/dialog_about/AboutDialog_main.cpp
+++ b/common/dialog_about/AboutDialog_main.cpp
@@ -179,7 +179,7 @@ static void buildKicadAboutBanner( EDA_BASE_FRAME* aParent, ABOUT_APP_INFO& aInf
<< HtmlNewline( 4 )
<< _( "The complete KiCad EDA Suite is released under the" ) << HtmlNewline( 2 )
<< HtmlHyperlink( "http://www.gnu.org/licenses",
- _( "GNU Affero General Public License (AGPL) version 3 or any later version" ) )
+ _( "GNU General Public License (GPL) version 3 or any later version" ) )
<< "";
aInfo.SetLicense( license );
diff --git a/pcbnew/CMakeLists.txt b/pcbnew/CMakeLists.txt
index bba3b69980..5ca87c5fc8 100644
--- a/pcbnew/CMakeLists.txt
+++ b/pcbnew/CMakeLists.txt
@@ -623,7 +623,6 @@ target_include_directories( pcbnew_kiface_objects PRIVATE
$
$
$
- $
$
$
)
@@ -633,7 +632,6 @@ target_include_directories( pcbnew_kiface_objects PRIVATE
add_dependencies( pcbnew_kiface_objects common )
add_dependencies( pcbnew_kiface_objects dxflib_qcad )
add_dependencies( pcbnew_kiface_objects tinyspline_lib )
-add_dependencies( pcbnew_kiface_objects ttl )
add_dependencies( pcbnew_kiface_objects nanosvg )
add_library( pcbnew_kiface MODULE $ )
@@ -670,7 +668,6 @@ set( PCBNEW_KIFACE_LIBRARIES
gal
dxflib_qcad
tinyspline_lib
- ttl
idf3
nanosvg
${wxWidgets_LIBRARIES}
diff --git a/pcbnew/connectivity/connectivity_algo.h b/pcbnew/connectivity/connectivity_algo.h
index 9bdd0daffb..ae3dc4d90e 100644
--- a/pcbnew/connectivity/connectivity_algo.h
+++ b/pcbnew/connectivity/connectivity_algo.h
@@ -68,14 +68,13 @@ public:
{}
/**
- * This sort operator implements the reverse sort such that the smallest weight will be placed first
- * in a priority queue
+ * This sort operator provides a sort-by-weight for the ratsnest operation
* @param aOther Other edge to compare
- * @return true if our weight is larger than the other weight
+ * @return true if our weight is smaller than the other weight
*/
bool operator<( CN_EDGE aOther ) const
{
- return m_weight > aOther.m_weight;
+ return m_weight < aOther.m_weight;
}
CN_ANCHOR_PTR GetSourceNode() const { return m_source; }
diff --git a/pcbnew/ratsnest/delauney.h b/pcbnew/ratsnest/delauney.h
new file mode 100644
index 0000000000..eb10212cc8
--- /dev/null
+++ b/pcbnew/ratsnest/delauney.h
@@ -0,0 +1,789 @@
+/*
+ * delauney.h
+ *
+ * Created on: Jun 19, 2020
+ * Author: seth
+ */
+
+#ifndef PCBNEW_RATSNEST_DELAUNEY_H_
+#define PCBNEW_RATSNEST_DELAUNEY_H_
+
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+#include
+
+constexpr std::size_t INVALID_INDEX =
+ (std::numeric_limits::max)();
+
+class Point
+{
+public:
+ Point(double x, double y) : m_x(x), m_y(y)
+ {}
+ Point() : m_x(0), m_y(0)
+ {}
+
+ double x() const
+ { return m_x; }
+
+ double y() const
+ { return m_y; }
+
+ double magnitude2() const
+ { return m_x * m_x + m_y * m_y; }
+
+ static double determinant(const Point& p1, const Point& p2)
+ {
+ return p1.m_x * p2.m_y - p1.m_y * p2.m_x;
+ }
+
+ static Point vector(const Point& p1, const Point& p2)
+ {
+ return Point(p2.m_x - p1.m_x, p2.m_y - p1.m_y);
+ }
+
+ static double dist2(const Point& p1, const Point& p2)
+ {
+ Point vec = vector(p1, p2);
+ return vec.m_x * vec.m_x + vec.m_y * vec.m_y;
+ }
+
+ static bool equal(const Point& p1, const Point& p2, double span)
+ {
+ double dist = dist2(p1, p2) / span;
+
+ // ABELL - This number should be examined to figure how how
+ // it correlates with the breakdown of calculating determinants.
+ return dist < 1e-20;
+ }
+
+private:
+ double m_x;
+ double m_y;
+};
+
+inline std::ostream& operator<<(std::ostream& out, const Point& p)
+{
+ out << p.x() << "/" << p.y();
+ return out;
+}
+
+
+class Points
+{
+public:
+ using const_iterator = Point const *;
+
+ Points(const std::vector& coords) : m_coords(coords)
+ {}
+
+ const Point& operator[](size_t offset)
+ {
+ return reinterpret_cast(
+ *(m_coords.data() + (offset * 2)));
+ };
+
+ Points::const_iterator begin() const
+ { return reinterpret_cast(m_coords.data()); }
+ Points::const_iterator end() const
+ { return reinterpret_cast(
+ m_coords.data() + m_coords.size()); }
+ size_t size() const
+ { return m_coords.size() / 2; }
+
+private:
+ const std::vector& m_coords;
+};
+
+class Delaunator
+{
+
+public:
+ std::vector const &coords;
+ Points m_points;
+
+ // 'triangles' stores the indices to the 'X's of the input
+ // 'coords'.
+ std::vector triangles;
+
+ // 'halfedges' store indices into 'triangles'. If halfedges[X] = Y,
+ // It says that there's an edge from X to Y where a) X and Y are
+ // both indices into triangles and b) X and Y are indices into different
+ // triangles in the array. This allows you to get from a triangle to
+ // its adjacent triangle. If the a triangle edge has no adjacent triangle,
+ // its half edge will be INVALID_INDEX.
+ std::vector halfedges;
+
+ std::vector hull_prev;
+ std::vector hull_next;
+
+ // This contains indexes into the triangles array.
+ std::vector hull_tri;
+ std::size_t hull_start;
+
+ inline Delaunator( std::vector const &in_coords );
+ inline double get_hull_area();
+ inline double get_triangle_area();
+
+private:
+ std::vector m_hash;
+ Point m_center;
+ std::size_t m_hash_size;
+ std::vector m_edge_stack;
+
+ inline std::size_t legalize( std::size_t a );
+ inline std::size_t hash_key( double x, double y ) const;
+ inline std::size_t add_triangle( std::size_t i0, std::size_t i1, std::size_t i2, std::size_t a,
+ std::size_t b, std::size_t c );
+ inline void link( std::size_t a, std::size_t b );
+};
+
+//@see https://stackoverflow.com/questions/33333363/built-in-mod-vs-custom-mod-function-improve-the-performance-of-modulus-op/33333636#33333636
+inline size_t fast_mod( const size_t i, const size_t c )
+{
+ return i >= c ? i % c : i;
+}
+
+// Kahan and Babuska summation, Neumaier variant; accumulates less FP error
+inline double sum( const std::vector &x )
+{
+ double sum = x[0];
+ double err = 0.0;
+
+ for( size_t i = 1; i < x.size(); i++ )
+ {
+ const double k = x[i];
+ const double m = sum + k;
+ err += std::fabs( sum ) >= std::fabs( k ) ? sum - m + k : k - m + sum;
+ sum = m;
+ }
+ return sum + err;
+}
+
+inline double dist( const double ax, const double ay, const double bx, const double by )
+{
+ const double dx = ax - bx;
+ const double dy = ay - by;
+ return dx * dx + dy * dy;
+}
+
+inline double circumradius( const Point &p1, const Point &p2, const Point &p3 )
+{
+ Point d = Point::vector( p1, p2 );
+ Point e = Point::vector( p1, p3 );
+
+ const double bl = d.magnitude2();
+ const double cl = e.magnitude2();
+ const double det = Point::determinant( d, e );
+
+ Point radius( ( e.y() * bl - d.y() * cl ) * 0.5 / det,
+ ( d.x() * cl - e.x() * bl ) * 0.5 / det );
+
+ if( ( bl > 0.0 || bl < 0.0 ) && ( cl > 0.0 || cl < 0.0 ) && ( det > 0.0 || det < 0.0 ) )
+ return radius.magnitude2();
+ return ( std::numeric_limits::max )();
+}
+
+inline double circumradius( const double ax, const double ay, const double bx, const double by,
+ const double cx, const double cy )
+{
+ const double dx = bx - ax;
+ const double dy = by - ay;
+ const double ex = cx - ax;
+ const double ey = cy - ay;
+
+ const double bl = dx * dx + dy * dy;
+ const double cl = ex * ex + ey * ey;
+ const double d = dx * ey - dy * ex;
+
+ const double x = ( ey * bl - dy * cl ) * 0.5 / d;
+ const double y = ( dx * cl - ex * bl ) * 0.5 / d;
+
+ if( ( bl > 0.0 || bl < 0.0 ) && ( cl > 0.0 || cl < 0.0 ) && ( d > 0.0 || d < 0.0 ) )
+ {
+ return x * x + y * y;
+ }
+ else
+ {
+ return ( std::numeric_limits::max )();
+ }
+}
+
+inline bool clockwise( const Point &p0, const Point &p1, const Point &p2 )
+{
+ Point v0 = Point::vector( p0, p1 );
+ Point v1 = Point::vector( p0, p2 );
+ double det = Point::determinant( v0, v1 );
+ double dist = v0.magnitude2() + v1.magnitude2();
+ double dist2 = Point::dist2( v0, v1 );
+ if( det == 0 )
+ {
+ return false;
+ }
+ double reldet = std::abs( dist / det );
+ if( reldet > 1e14 )
+ return false;
+ return det < 0;
+}
+
+inline bool clockwise( double px, double py, double qx, double qy, double rx, double ry )
+{
+ Point p0( px, py );
+ Point p1( qx, qy );
+ Point p2( rx, ry );
+ return clockwise( p0, p1, p2 );
+}
+
+inline bool counterclockwise( const Point &p0, const Point &p1, const Point &p2 )
+{
+ Point v0 = Point::vector( p0, p1 );
+ Point v1 = Point::vector( p0, p2 );
+ double det = Point::determinant( v0, v1 );
+ double dist = v0.magnitude2() + v1.magnitude2();
+ double dist2 = Point::dist2( v0, v1 );
+ if( det == 0 )
+ return false;
+ double reldet = std::abs( dist / det );
+ if( reldet > 1e14 )
+ return false;
+ return det > 0;
+}
+
+inline bool counterclockwise( double px, double py, double qx, double qy, double rx, double ry )
+{
+ Point p0( px, py );
+ Point p1( qx, qy );
+ Point p2( rx, ry );
+ return counterclockwise( p0, p1, p2 );
+}
+
+inline Point circumcenter( const double ax, const double ay, const double bx, const double by,
+ const double cx, const double cy )
+{
+ const double dx = bx - ax;
+ const double dy = by - ay;
+ const double ex = cx - ax;
+ const double ey = cy - ay;
+
+ const double bl = dx * dx + dy * dy;
+ const double cl = ex * ex + ey * ey;
+ //ABELL - This is suspect for div-by-0.
+ const double d = dx * ey - dy * ex;
+
+ const double x = ax + ( ey * bl - dy * cl ) * 0.5 / d;
+ const double y = ay + ( dx * cl - ex * bl ) * 0.5 / d;
+
+ return Point( x, y );
+}
+
+inline bool in_circle( const double ax, const double ay, const double bx, const double by,
+ const double cx, const double cy, const double px, const double py )
+{
+ const double dx = ax - px;
+ const double dy = ay - py;
+ const double ex = bx - px;
+ const double ey = by - py;
+ const double fx = cx - px;
+ const double fy = cy - py;
+
+ const double ap = dx * dx + dy * dy;
+ const double bp = ex * ex + ey * ey;
+ const double cp = fx * fx + fy * fy;
+
+ return ( dx * ( ey * cp - bp * fy ) - dy * ( ex * cp - bp * fx ) + ap * ( ex * fy - ey * fx ) )
+ < 0.0;
+}
+
+constexpr double EPSILON = std::numeric_limits::epsilon();
+
+inline bool check_pts_equal( double x1, double y1, double x2, double y2 )
+{
+ return std::fabs( x1 - x2 ) <= EPSILON && std::fabs( y1 - y2 ) <= EPSILON;
+}
+
+// monotonically increases with real angle, but doesn't need expensive trigonometry
+inline double pseudo_angle( const double dx, const double dy )
+{
+ const double p = dx / ( std::abs( dx ) + std::abs( dy ) );
+ return ( dy > 0.0 ? 3.0 - p : 1.0 + p ) / 4.0; // [0..1)
+}
+
+Delaunator::Delaunator( std::vector const &in_coords ) :
+ coords( in_coords ), m_points( in_coords )
+{
+ std::size_t n = coords.size() >> 1;
+
+ std::vector ids( n );
+ std::iota( ids.begin(), ids.end(), 0 );
+
+ double max_x = std::numeric_limits::lowest();
+ double max_y = std::numeric_limits::lowest();
+ double min_x = ( std::numeric_limits::max )();
+ double min_y = ( std::numeric_limits::max )();
+ for( const Point &p : m_points )
+ {
+ min_x = std::min( p.x(), min_x );
+ min_y = std::min( p.y(), min_y );
+ max_x = std::max( p.x(), max_x );
+ max_y = std::max( p.y(), max_y );
+ }
+ double width = max_x - min_x;
+ double height = max_y - min_y;
+ double span = width * width + height * height; // Everything is square dist.
+
+ Point center( ( min_x + max_x ) / 2, ( min_y + max_y ) / 2 );
+
+ std::size_t i0 = INVALID_INDEX;
+ std::size_t i1 = INVALID_INDEX;
+ std::size_t i2 = INVALID_INDEX;
+
+ // pick a seed point close to the centroid
+ double min_dist = ( std::numeric_limits::max )();
+ for( size_t i = 0; i < m_points.size(); ++i )
+ {
+ const Point &p = m_points[i];
+ const double d = Point::dist2( center, p );
+ if( d < min_dist )
+ {
+ i0 = i;
+ min_dist = d;
+ }
+ }
+
+ const Point &p0 = m_points[i0];
+
+ min_dist = ( std::numeric_limits::max )();
+
+ // find the point closest to the seed
+ for( std::size_t i = 0; i < n; i++ )
+ {
+ if( i == i0 )
+ continue;
+ const double d = Point::dist2( p0, m_points[i] );
+ if( d < min_dist && d > 0.0 )
+ {
+ i1 = i;
+ min_dist = d;
+ }
+ }
+
+ const Point &p1 = m_points[i1];
+
+ double min_radius = ( std::numeric_limits::max )();
+
+ // find the third point which forms the smallest circumcircle
+ // with the first two
+ for( std::size_t i = 0; i < n; i++ )
+ {
+ if( i == i0 || i == i1 )
+ continue;
+
+ const double r = circumradius( p0, p1, m_points[i] );
+ if( r < min_radius )
+ {
+ i2 = i;
+ min_radius = r;
+ }
+ }
+
+ if( !( min_radius < ( std::numeric_limits::max )() ) )
+ {
+ throw std::runtime_error( "not triangulation" );
+ }
+
+ const Point &p2 = m_points[i2];
+
+ if( counterclockwise( p0, p1, p2 ) )
+ std::swap( i1, i2 );
+
+ double i0x = p0.x();
+ double i0y = p0.y();
+ double i1x = m_points[i1].x();
+ double i1y = m_points[i1].y();
+ double i2x = m_points[i2].x();
+ double i2y = m_points[i2].y();
+
+ m_center = circumcenter( i0x, i0y, i1x, i1y, i2x, i2y );
+
+ // Calculate the distances from the center once to avoid having to
+ // calculate for each compare. This used to be done in the comparator,
+ // but GCC 7.5+ would copy the comparator to iterators used in the
+ // sort, and this was excruciatingly slow when there were many points
+ // because you had to copy the vector of distances.
+ std::vector dists;
+ dists.reserve( m_points.size() );
+ for( const Point &p : m_points )
+ dists.push_back( dist( p.x(), p.y(), m_center.x(), m_center.y() ) );
+
+ // sort the points by distance from the seed triangle circumcenter
+ std::sort( ids.begin(), ids.end(), [ &dists ]( std::size_t i, std::size_t j )
+ { return dists[i] < dists[j];} );
+
+ // initialize a hash table for storing edges of the advancing convex hull
+ m_hash_size = static_cast( std::ceil( std::sqrt( n ) ) );
+ m_hash.resize( m_hash_size );
+ std::fill( m_hash.begin(), m_hash.end(), INVALID_INDEX );
+
+ // initialize arrays for tracking the edges of the advancing convex hull
+ hull_prev.resize( n );
+ hull_next.resize( n );
+ hull_tri.resize( n );
+
+ hull_start = i0;
+
+ size_t hull_size = 3;
+
+ hull_next[i0] = hull_prev[i2] = i1;
+ hull_next[i1] = hull_prev[i0] = i2;
+ hull_next[i2] = hull_prev[i1] = i0;
+
+ hull_tri[i0] = 0;
+ hull_tri[i1] = 1;
+ hull_tri[i2] = 2;
+
+ m_hash[hash_key( i0x, i0y )] = i0;
+ m_hash[hash_key( i1x, i1y )] = i1;
+ m_hash[hash_key( i2x, i2y )] = i2;
+
+ // ABELL - Why are we doing this is n < 3? There is no triangulation if
+ // there is no triangle.
+
+ std::size_t max_triangles = n < 3 ? 1 : 2 * n - 5;
+ triangles.reserve( max_triangles * 3 );
+ halfedges.reserve( max_triangles * 3 );
+ add_triangle( i0, i1, i2, INVALID_INDEX, INVALID_INDEX, INVALID_INDEX );
+ double xp = std::numeric_limits::quiet_NaN();
+ double yp = std::numeric_limits::quiet_NaN();
+
+ // Go through points based on distance from the center.
+ for( std::size_t k = 0; k < n; k++ )
+ {
+ const std::size_t i = ids[k];
+ const double x = coords[2 * i];
+ const double y = coords[2 * i + 1];
+
+ // skip near-duplicate points
+ if( k > 0 && check_pts_equal( x, y, xp, yp ) )
+ continue;
+ xp = x;
+ yp = y;
+
+ //ABELL - This is dumb. We have the indices. Use them.
+ // skip seed triangle points
+ if( check_pts_equal( x, y, i0x, i0y ) || check_pts_equal( x, y, i1x, i1y )
+ || check_pts_equal( x, y, i2x, i2y ) )
+ continue;
+
+ // find a visible edge on the convex hull using edge hash
+ std::size_t start = 0;
+
+ size_t key = hash_key( x, y );
+ for( size_t j = 0; j < m_hash_size; j++ )
+ {
+ start = m_hash[fast_mod( key + j, m_hash_size )];
+
+ // ABELL - Not sure how hull_next[start] could ever equal start
+ // I *think* hull_next is just a representation of the hull in one
+ // direction.
+ if( start != INVALID_INDEX && start != hull_next[start] )
+ break;
+ }
+
+ //ABELL
+ // Make sure what we found is on the hull.
+ assert( hull_prev[start] != start );
+ assert( hull_prev[start] != INVALID_INDEX );
+
+ start = hull_prev[start];
+ size_t e = start;
+ size_t q;
+
+ // Advance until we find a place in the hull where our current point
+ // can be added.
+ while( true )
+ {
+ q = hull_next[e];
+ if( Point::equal( m_points[i], m_points[e], span )
+ || Point::equal( m_points[i], m_points[q], span ) )
+ {
+ e = INVALID_INDEX;
+ break;
+ }
+ if( counterclockwise( x, y, coords[2 * e], coords[2 * e + 1], coords[2 * q],
+ coords[2 * q + 1] ) )
+ break;
+ e = q;
+ if( e == start )
+ {
+ e = INVALID_INDEX;
+ break;
+ }
+ }
+
+ // ABELL
+ // This seems wrong. Perhaps we should check what's going on?
+ if( e == INVALID_INDEX ) // likely a near-duplicate point; skip it
+ continue;
+
+ // add the first triangle from the point
+ std::size_t t = add_triangle( e, i, hull_next[e], INVALID_INDEX, INVALID_INDEX,
+ hull_tri[e] );
+
+ hull_tri[i] = legalize( t + 2 ); // Legalize the triangle we just added.
+ hull_tri[e] = t;
+ hull_size++;
+
+ // walk forward through the hull, adding more triangles and
+ // flipping recursively
+ std::size_t next = hull_next[e];
+ while( true )
+ {
+ q = hull_next[next];
+ if( !counterclockwise( x, y, coords[2 * next], coords[2 * next + 1], coords[2 * q],
+ coords[2 * q + 1] ) )
+ break;
+ t = add_triangle( next, i, q, hull_tri[i], INVALID_INDEX, hull_tri[next] );
+ hull_tri[i] = legalize( t + 2 );
+ hull_next[next] = next; // mark as removed
+ hull_size--;
+ next = q;
+ }
+
+ // walk backward from the other side, adding more triangles and flipping
+ if( e == start )
+ {
+ while( true )
+ {
+ q = hull_prev[e];
+ if( !counterclockwise( x, y, coords[2 * q], coords[2 * q + 1], coords[2 * e],
+ coords[2 * e + 1] ) )
+ break;
+ t = add_triangle( q, i, e, INVALID_INDEX, hull_tri[e], hull_tri[q] );
+ legalize( t + 2 );
+ hull_tri[q] = t;
+ hull_next[e] = e; // mark as removed
+ hull_size--;
+ e = q;
+ }
+ }
+
+ // update the hull indices
+ hull_prev[i] = e;
+ hull_start = e;
+ hull_prev[next] = i;
+ hull_next[e] = i;
+ hull_next[i] = next;
+
+ m_hash[hash_key( x, y )] = i;
+ m_hash[hash_key( coords[2 * e], coords[2 * e + 1] )] = e;
+ }
+}
+
+double Delaunator::get_hull_area()
+{
+ std::vector hull_area;
+ size_t e = hull_start;
+ size_t cnt = 1;
+ do
+ {
+ hull_area.push_back(
+ ( coords[2 * e] - coords[2 * hull_prev[e]] )
+ * ( coords[2 * e + 1] + coords[2 * hull_prev[e] + 1] ) );
+ cnt++;
+ e = hull_next[e];
+ } while( e != hull_start );
+ return sum( hull_area );
+}
+
+double Delaunator::get_triangle_area()
+{
+ std::vector vals;
+ for( size_t i = 0; i < triangles.size(); i += 3 )
+ {
+ const double ax = coords[2 * triangles[i]];
+ const double ay = coords[2 * triangles[i] + 1];
+ const double bx = coords[2 * triangles[i + 1]];
+ const double by = coords[2 * triangles[i + 1] + 1];
+ const double cx = coords[2 * triangles[i + 2]];
+ const double cy = coords[2 * triangles[i + 2] + 1];
+ double val = std::fabs( ( by - ay ) * ( cx - bx ) - ( bx - ax ) * ( cy - by ) );
+ vals.push_back( val );
+ }
+ return sum( vals );
+}
+
+std::size_t Delaunator::legalize( std::size_t a )
+{
+ std::size_t i = 0;
+ std::size_t ar = 0;
+ m_edge_stack.clear();
+
+ // recursion eliminated with a fixed-size stack
+ while( true )
+ {
+ const size_t b = halfedges[a];
+
+ /* if the pair of triangles doesn't satisfy the Delaunay condition
+ * (p1 is inside the circumcircle of [p0, pl, pr]), flip them,
+ * then do the same check/flip recursively for the new pair of triangles
+ *
+ * pl pl
+ * /||\ / \
+ * al/ || \bl al/ \a
+ * / || \ / \
+ * / a||b \ flip /___ar___\
+ * p0\ || /p1 => p0\---bl---/p1
+ * \ || / \ /
+ * ar\ || /br b\ /br
+ * \||/ \ /
+ * pr pr
+ */
+ const size_t a0 = 3 * ( a / 3 );
+ ar = a0 + ( a + 2 ) % 3;
+
+ if( b == INVALID_INDEX )
+ {
+ if( i > 0 )
+ {
+ i--;
+ a = m_edge_stack[i];
+ continue;
+ }
+ else
+ {
+ //i = INVALID_INDEX;
+ break;
+ }
+ }
+
+ const size_t b0 = 3 * ( b / 3 );
+ const size_t al = a0 + ( a + 1 ) % 3;
+ const size_t bl = b0 + ( b + 2 ) % 3;
+
+ const std::size_t p0 = triangles[ar];
+ const std::size_t pr = triangles[a];
+ const std::size_t pl = triangles[al];
+ const std::size_t p1 = triangles[bl];
+
+ const bool illegal = in_circle( coords[2 * p0], coords[2 * p0 + 1], coords[2 * pr],
+ coords[2 * pr + 1], coords[2 * pl], coords[2 * pl + 1], coords[2 * p1],
+ coords[2 * p1 + 1] );
+
+ if( illegal )
+ {
+ triangles[a] = p1;
+ triangles[b] = p0;
+
+ auto hbl = halfedges[bl];
+
+ // Edge swapped on the other side of the hull (rare).
+ // Fix the halfedge reference
+ if( hbl == INVALID_INDEX )
+ {
+ std::size_t e = hull_start;
+ do
+ {
+ if( hull_tri[e] == bl )
+ {
+ hull_tri[e] = a;
+ break;
+ }
+ e = hull_prev[e];
+ } while( e != hull_start );
+ }
+ link( a, hbl );
+ link( b, halfedges[ar] );
+ link( ar, bl );
+ std::size_t br = b0 + ( b + 1 ) % 3;
+
+ if( i < m_edge_stack.size() )
+ {
+ m_edge_stack[i] = br;
+ }
+ else
+ {
+ m_edge_stack.push_back( br );
+ }
+ i++;
+
+ }
+ else
+ {
+ if( i > 0 )
+ {
+ i--;
+ a = m_edge_stack[i];
+ continue;
+ }
+ else
+ {
+ break;
+ }
+ }
+ }
+ return ar;
+}
+
+std::size_t Delaunator::hash_key( const double x, const double y ) const
+{
+ const double dx = x - m_center.x();
+ const double dy = y - m_center.y();
+ return fast_mod(
+ static_cast( std::llround(
+ std::floor( pseudo_angle( dx, dy ) * static_cast( m_hash_size ) ) ) ),
+ m_hash_size );
+}
+
+std::size_t Delaunator::add_triangle( std::size_t i0, std::size_t i1, std::size_t i2,
+ std::size_t a, std::size_t b, std::size_t c )
+{
+ std::size_t t = triangles.size();
+ triangles.push_back( i0 );
+ triangles.push_back( i1 );
+ triangles.push_back( i2 );
+ link( t, a );
+ link( t + 1, b );
+ link( t + 2, c );
+ return t;
+}
+
+void Delaunator::link( const std::size_t a, const std::size_t b )
+{
+ std::size_t s = halfedges.size();
+ if( a == s )
+ {
+ halfedges.push_back( b );
+ }
+ else if( a < s )
+ {
+ halfedges[a] = b;
+ }
+ else
+ {
+ throw std::runtime_error( "Cannot link edge" );
+ }
+ if( b != INVALID_INDEX )
+ {
+ std::size_t s2 = halfedges.size();
+ if( b == s2 )
+ {
+ halfedges.push_back( a );
+ }
+ else if( b < s2 )
+ {
+ halfedges[b] = a;
+ }
+ else
+ {
+ throw std::runtime_error( "Cannot link edge" );
+ }
+ }
+}
+
+
+#endif /* PCBNEW_RATSNEST_DELAUNEY_H_ */
diff --git a/pcbnew/ratsnest/ratsnest_data.cpp b/pcbnew/ratsnest/ratsnest_data.cpp
index cfd2701c77..2571bf53a6 100644
--- a/pcbnew/ratsnest/ratsnest_data.cpp
+++ b/pcbnew/ratsnest/ratsnest_data.cpp
@@ -41,7 +41,8 @@ using namespace std::placeholders;
#include
#include
#include
-#include
+
+#include
class disjoint_set
{
@@ -105,7 +106,7 @@ private:
std::vector m_depth;
};
-void RN_NET::kruskalMST( std::priority_queue &aEdges )
+void RN_NET::kruskalMST( const std::vector &aEdges )
{
disjoint_set dset( m_nodes.size() );
@@ -116,10 +117,8 @@ void RN_NET::kruskalMST( std::priority_queue &aEdges )
for( auto& node : m_nodes )
node->SetTag( i++ );
- while( !aEdges.empty() )
+ for( auto& tmp : aEdges )
{
- auto& tmp = aEdges.top();
-
int u = tmp.GetSourceNode()->GetTag();
int v = tmp.GetTargetNode()->GetTag();
@@ -128,8 +127,6 @@ void RN_NET::kruskalMST( std::priority_queue &aEdges )
if( tmp.GetWeight() > 0 )
m_rnEdges.push_back( tmp );
}
-
- aEdges.pop();
}
}
@@ -137,37 +134,25 @@ void RN_NET::kruskalMST( std::priority_queue &aEdges )
class RN_NET::TRIANGULATOR_STATE
{
private:
- std::vector m_allNodes;
-
- std::list hedTriangulation( std::vector& aNodes )
- {
- hed::TRIANGULATION triangulator;
- triangulator.CreateDelaunay( aNodes.begin(), aNodes.end() );
- std::list edges;
- triangulator.GetEdges( edges );
-
- return edges;
- }
+ std::multiset m_allNodes;
// Checks if all nodes in aNodes lie on a single line. Requires the nodes to
// have unique coordinates!
- bool areNodesColinear( const std::vector& aNodes ) const
+ bool areNodesColinear( const std::vector& aNodes ) const
{
if ( aNodes.size() <= 2 )
return true;
- const auto p0 = aNodes[0]->Pos();
- const auto v0 = aNodes[1]->Pos() - p0;
+ const VECTOR2I p0( aNodes[0]->Pos() );
+ const VECTOR2I v0( aNodes[1]->Pos() - p0 );
for( unsigned i = 2; i < aNodes.size(); i++ )
{
- const auto v1 = aNodes[i]->Pos() - p0;
+ const VECTOR2I v1 = aNodes[i]->Pos() - p0;
if( v0.Cross( v1 ) != 0 )
- {
return false;
- }
}
return true;
@@ -182,97 +167,84 @@ public:
void AddNode( CN_ANCHOR_PTR aNode )
{
- m_allNodes.push_back( aNode );
+ m_allNodes.insert( aNode );
}
- const std::priority_queue Triangulate()
+ void Triangulate( std::vector& mstEdges)
{
- std::priority_queue mstEdges;
- std::list triangEdges;
- std::vector triNodes;
+ std::vector node_pts;
using ANCHOR_LIST = std::vector;
- std::vector anchorChains;
- triNodes.reserve( m_allNodes.size() );
- anchorChains.resize( m_allNodes.size() );
+ ANCHOR_LIST anchors;
+ std::vector anchorChains( m_allNodes.size() );
- std::sort( m_allNodes.begin(), m_allNodes.end(),
- [] ( const CN_ANCHOR_PTR& aNode1, const CN_ANCHOR_PTR& aNode2 )
- {
- if( aNode1->Pos().y < aNode2->Pos().y )
- return true;
- else if( aNode1->Pos().y == aNode2->Pos().y )
- {
- return aNode1->Pos().x < aNode2->Pos().x;
- }
+ node_pts.reserve( 2 * m_allNodes.size() );
+ anchors.reserve( m_allNodes.size() );
- return false;
- }
- );
-
- CN_ANCHOR_PTR prev, last;
- int id = 0;
+ CN_ANCHOR_PTR prev = nullptr;
for( const auto& n : m_allNodes )
{
if( !prev || prev->Pos() != n->Pos() )
{
- auto tn = std::make_shared ( n->Pos().x, n->Pos().y );
-
- tn->SetId( id );
- triNodes.push_back( tn );
+ node_pts.push_back( n->Pos().x );
+ node_pts.push_back( n->Pos().y );
+ anchors.push_back( n );
+ prev = n;
}
- id++;
- prev = n;
+ anchorChains[anchors.size() - 1].push_back( n );
}
- int prevId = 0;
-
- for( const auto& n : triNodes )
+ if( anchors.size() < 2 )
{
- for( int i = prevId; i < n->Id(); i++ )
- anchorChains[prevId].push_back( m_allNodes[ i ] );
-
- prevId = n->Id();
+ return;
}
-
- for( int i = prevId; i < id; i++ )
- anchorChains[prevId].push_back( m_allNodes[ i ] );
-
- if( triNodes.size() == 1 )
- {
- return mstEdges;
- }
- else if( areNodesColinear( triNodes ) )
+ else if( areNodesColinear( anchors ) )
{
// special case: all nodes are on the same line - there's no
// triangulation for such set. In this case, we sort along any coordinate
// and chain the nodes together.
- for(int i = 0; i < (int)triNodes.size() - 1; i++ )
+ for( size_t i = 0; i < anchors.size() - 1; i++ )
{
- auto src = m_allNodes[ triNodes[i]->Id() ];
- auto dst = m_allNodes[ triNodes[i + 1]->Id() ];
- mstEdges.emplace( src, dst, src->Dist( *dst ) );
+ auto src = anchors[i];
+ auto dst = anchors[i + 1];
+ mstEdges.emplace_back( src, dst, src->Dist( *dst ) );
}
}
else
{
- hed::TRIANGULATION triangulator;
- triangulator.CreateDelaunay( triNodes.begin(), triNodes.end() );
- triangulator.GetEdges( triangEdges );
+ delaunator::Delaunator delaunator( node_pts );
+ auto& triangles = delaunator.triangles;
- for( const auto& e : triangEdges )
+ for( size_t i = 0; i < triangles.size(); i += 3 )
{
- auto src = m_allNodes[ e->GetSourceNode()->Id() ];
- auto dst = m_allNodes[ e->GetTargetNode()->Id() ];
+ auto src = anchors[triangles[i]];
+ auto dst = anchors[triangles[i + 1]];
+ mstEdges.emplace_back( src, dst, src->Dist( *dst ) );
- mstEdges.emplace( src, dst, src->Dist( *dst ) );
+ src = anchors[triangles[i + 1]];
+ dst = anchors[triangles[i + 2]];
+ mstEdges.emplace_back( src, dst, src->Dist( *dst ) );
+
+ src = anchors[triangles[i + 2]];
+ dst = anchors[triangles[i]];
+ mstEdges.emplace_back( src, dst, src->Dist( *dst ) );
+ }
+
+ for( size_t i = 0; i < delaunator.halfedges.size(); i++ )
+ {
+ if( delaunator.halfedges[i] == delaunator::INVALID_INDEX )
+ continue;
+
+ auto src = anchors[triangles[i]];
+ auto dst = anchors[triangles[delaunator.halfedges[i]]];
+ mstEdges.emplace_back( src, dst, src->Dist( *dst ) );
}
}
- for( unsigned int i = 0; i < anchorChains.size(); i++ )
+ for( size_t i = 0; i < anchorChains.size(); i++ )
{
auto& chain = anchorChains[i];
@@ -289,11 +261,9 @@ public:
const auto& prevNode = chain[j - 1];
const auto& curNode = chain[j];
int weight = prevNode->GetCluster() != curNode->GetCluster() ? 1 : 0;
- mstEdges.emplace( prevNode, curNode, weight );
+ mstEdges.emplace_back( prevNode, curNode, weight );
}
}
-
- return mstEdges;
}
};
@@ -342,16 +312,21 @@ void RN_NET::compute()
m_triangulator->AddNode( n );
}
+ std::vector triangEdges;
+ triangEdges.reserve( m_nodes.size() + m_boardEdges.size() );
+
#ifdef PROFILE
PROF_COUNTER cnt("triangulate");
#endif
- auto triangEdges = m_triangulator->Triangulate();
+ m_triangulator->Triangulate( triangEdges );
#ifdef PROFILE
cnt.Show();
#endif
for( const auto& e : m_boardEdges )
- triangEdges.push( e );
+ triangEdges.emplace_back( e );
+
+ std::sort( triangEdges.begin(), triangEdges.end() );
// Get the minimal spanning tree
#ifdef PROFILE
diff --git a/pcbnew/ratsnest/ratsnest_data.h b/pcbnew/ratsnest/ratsnest_data.h
index dd8c0852f8..38eacfed2b 100644
--- a/pcbnew/ratsnest/ratsnest_data.h
+++ b/pcbnew/ratsnest/ratsnest_data.h
@@ -2,6 +2,7 @@
* This program source code file is part of KICAD, a free EDA CAD application.
*
* Copyright (C) 2013-2015 CERN
+ * Copyright (C) 2019-2020 KiCad Developers, see AUTHORS.txt for contributors.
* @author Maciej Suminski
*
* This program is free software; you can redistribute it and/or
@@ -33,24 +34,14 @@
#include
#include