2013-05-26 04:36:44 +00:00
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/**
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* @file convert_basic_shapes_to_polygon.cpp
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*/
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/*
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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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2018-01-19 20:10:40 +00:00
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* Copyright (C) 2018 Jean-Pierre Charras, jp.charras at wanadoo.fr
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2021-06-25 16:46:16 +00:00
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* Copyright (C) 1992-2021 KiCad Developers, see AUTHORS.txt for contributors.
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2013-05-26 04:36:44 +00:00
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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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2020-01-07 17:12:59 +00:00
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#include <algorithm> // for max, min
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#include <math.h> // for atan2
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#include <type_traits> // for swap
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2013-05-26 04:36:44 +00:00
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#include <convert_basic_shapes_to_polygon.h>
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2019-05-22 13:33:48 +00:00
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#include <geometry/geometry_utils.h>
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2020-01-07 17:12:59 +00:00
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#include <geometry/shape_line_chain.h> // for SHAPE_LINE_CHAIN
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#include <geometry/shape_poly_set.h> // for SHAPE_POLY_SET, SHAPE_POLY_SE...
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#include <math/util.h>
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#include <math/vector2d.h> // for VECTOR2I
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#include <trigo.h>
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2019-05-22 13:33:48 +00:00
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2013-05-26 04:36:44 +00:00
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2020-06-22 19:35:09 +00:00
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void TransformCircleToPolygon( SHAPE_LINE_CHAIN& aCornerBuffer, wxPoint aCenter, int aRadius,
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2021-07-05 15:40:26 +00:00
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int aError, ERROR_LOC aErrorLoc, int aMinSegCount )
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2019-05-09 14:23:18 +00:00
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{
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wxPoint corner_position;
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2020-09-10 23:05:20 +00:00
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int numSegs = GetArcToSegmentCount( aRadius, aError, 360.0 );
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2021-07-05 15:40:26 +00:00
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numSegs = std::max( aMinSegCount, numSegs );
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2021-06-26 11:18:46 +00:00
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// The shape will be built with a even number of segs. Reason: the horizontal
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// diameter begins and ends to points on the actual circle, or circle
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// expanded by aError if aErrorLoc == ERROR_OUTSIDE.
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// This is used by Arc to Polygon shape convert.
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if( numSegs & 1 )
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numSegs++;
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2020-09-10 23:05:20 +00:00
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int delta = 3600 / numSegs; // rotate angle in 0.1 degree
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2020-10-13 10:55:24 +00:00
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int radius = aRadius;
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if( aErrorLoc == ERROR_OUTSIDE )
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2021-06-28 13:50:16 +00:00
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{
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2021-06-28 16:51:37 +00:00
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// The outer radius should be radius+aError
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// Recalculate the actual approx error, as it can be smaller than aError
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// because numSegs is clamped to a minimal value
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int actual_delta_radius = CircleToEndSegmentDeltaRadius( radius, numSegs );
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radius += GetCircleToPolyCorrection( actual_delta_radius );
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2021-06-28 13:50:16 +00:00
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}
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2019-05-09 14:23:18 +00:00
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2020-09-10 23:05:20 +00:00
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for( int angle = 0; angle < 3600; angle += delta )
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2019-05-09 14:23:18 +00:00
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{
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2019-05-22 13:33:48 +00:00
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corner_position.x = radius;
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2019-05-09 14:23:18 +00:00
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corner_position.y = 0;
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RotatePoint( &corner_position, angle );
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corner_position += aCenter;
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2020-06-22 19:35:09 +00:00
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aCornerBuffer.Append( corner_position.x, corner_position.y );
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2019-05-09 14:23:18 +00:00
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}
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2020-06-22 19:35:09 +00:00
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aCornerBuffer.SetClosed( true );
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2019-05-09 14:23:18 +00:00
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}
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2013-05-26 04:36:44 +00:00
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2019-09-09 12:44:41 +00:00
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void TransformCircleToPolygon( SHAPE_POLY_SET& aCornerBuffer, wxPoint aCenter, int aRadius,
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2021-07-05 15:40:26 +00:00
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int aError, ERROR_LOC aErrorLoc, int aMinSegCount )
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2013-05-26 04:36:44 +00:00
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{
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wxPoint corner_position;
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2020-09-10 23:05:20 +00:00
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int numSegs = GetArcToSegmentCount( aRadius, aError, 360.0 );
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2021-07-05 15:40:26 +00:00
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numSegs = std::max( aMinSegCount, numSegs);
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2021-06-26 11:18:46 +00:00
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// The shape will be built with a even number of segs. Reason: the horizontal
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// diameter begins and ends to points on the actual circle, or circle
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// expanded by aError if aErrorLoc == ERROR_OUTSIDE.
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// This is used by Arc to Polygon shape convert.
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if( numSegs & 1 )
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numSegs++;
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2020-09-10 23:05:20 +00:00
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int delta = 3600 / numSegs; // rotate angle in 0.1 degree
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2020-10-13 10:55:24 +00:00
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int radius = aRadius;
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if( aErrorLoc == ERROR_OUTSIDE )
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2021-06-28 16:51:37 +00:00
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{
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// The outer radius should be radius+aError
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// Recalculate the actual approx error, as it can be smaller than aError
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// because numSegs is clamped to a minimal value
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int actual_delta_radius = CircleToEndSegmentDeltaRadius( radius, numSegs );
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radius += GetCircleToPolyCorrection( actual_delta_radius );
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}
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2013-05-26 04:36:44 +00:00
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2015-07-27 19:45:57 +00:00
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aCornerBuffer.NewOutline();
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2020-09-10 23:05:20 +00:00
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for( int angle = 0; angle < 3600; angle += delta )
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2013-05-26 04:36:44 +00:00
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{
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2020-09-10 23:05:20 +00:00
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corner_position.x = radius;
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corner_position.y = 0;
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2018-01-19 20:30:43 +00:00
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RotatePoint( &corner_position, angle );
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2013-05-26 04:36:44 +00:00
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corner_position += aCenter;
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2015-07-27 19:45:57 +00:00
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aCornerBuffer.Append( corner_position.x, corner_position.y );
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2013-05-26 04:36:44 +00:00
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}
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2020-09-10 23:05:20 +00:00
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// Finish circle
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corner_position.x = radius;
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corner_position.y = 0;
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corner_position += aCenter;
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aCornerBuffer.Append( corner_position.x, corner_position.y );
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2013-05-26 04:36:44 +00:00
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}
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2019-05-22 13:33:48 +00:00
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2019-09-09 12:44:41 +00:00
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void TransformOvalToPolygon( SHAPE_POLY_SET& aCornerBuffer, wxPoint aStart, wxPoint aEnd,
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2021-07-05 15:40:26 +00:00
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int aWidth, int aError, ERROR_LOC aErrorLoc, int aMinSegCount )
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2018-01-20 18:34:50 +00:00
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{
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2018-01-20 19:44:04 +00:00
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// To build the polygonal shape outside the actual shape, we use a bigger
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// radius to build rounded ends.
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// However, the width of the segment is too big.
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// so, later, we will clamp the polygonal shape with the bounding box
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// of the segment.
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2020-09-10 23:05:20 +00:00
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int radius = aWidth / 2;
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int numSegs = GetArcToSegmentCount( radius, aError, 360.0 );
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2021-07-05 15:40:26 +00:00
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numSegs = std::max( aMinSegCount, numSegs );
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2020-09-10 23:05:20 +00:00
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int delta = 3600 / numSegs; // rotate angle in 0.1 degree
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2020-01-26 17:01:11 +00:00
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2020-10-13 10:55:24 +00:00
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if( aErrorLoc == ERROR_OUTSIDE )
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2021-07-05 15:40:26 +00:00
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{
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// The outer radius should be radius+aError
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// Recalculate the actual approx error, as it can be smaller than aError
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// because numSegs is clamped to a minimal value
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int actual_delta_radius = CircleToEndSegmentDeltaRadius( radius, numSegs );
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int correction = GetCircleToPolyCorrection( actual_delta_radius );
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2020-10-13 10:55:24 +00:00
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radius += correction;
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2021-07-05 15:40:26 +00:00
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}
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2018-01-20 19:44:04 +00:00
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// end point is the coordinate relative to aStart
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2020-09-10 23:05:20 +00:00
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wxPoint endp = aEnd - aStart;
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wxPoint startp = aStart;
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wxPoint corner;
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2018-01-20 19:44:04 +00:00
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SHAPE_POLY_SET polyshape;
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2018-01-20 18:34:50 +00:00
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2018-01-20 19:44:04 +00:00
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polyshape.NewOutline();
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2018-01-20 18:34:50 +00:00
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2018-01-20 19:44:04 +00:00
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// normalize the position in order to have endp.x >= 0
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// it makes calculations more easy to understand
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2018-01-20 18:34:50 +00:00
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if( endp.x < 0 )
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{
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endp = aStart - aEnd;
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startp = aEnd;
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}
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2018-01-20 19:44:04 +00:00
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// delta_angle is in radian
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2018-01-20 18:34:50 +00:00
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double delta_angle = atan2( (double)endp.y, (double)endp.x );
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2020-09-10 23:05:20 +00:00
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int seg_len = KiROUND( EuclideanNorm( endp ) );
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2018-01-20 18:34:50 +00:00
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// Compute the outlines of the segment, and creates a polygon
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2018-01-20 19:44:04 +00:00
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// Note: the polygonal shape is built from the equivalent horizontal
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2020-09-10 23:05:20 +00:00
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// segment starting at {0,0}, and ending at {seg_len,0}
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2018-01-20 19:44:04 +00:00
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2018-01-20 18:34:50 +00:00
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// add right rounded end:
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2020-09-10 23:05:20 +00:00
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for( int angle = 0; angle < 1800; angle += delta )
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2018-01-20 18:34:50 +00:00
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{
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corner = wxPoint( 0, radius );
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2020-09-10 23:05:20 +00:00
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RotatePoint( &corner, angle );
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2018-01-20 18:34:50 +00:00
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corner.x += seg_len;
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polyshape.Append( corner.x, corner.y );
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}
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// Finish arc:
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corner = wxPoint( seg_len, -radius );
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polyshape.Append( corner.x, corner.y );
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// add left rounded end:
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2020-09-10 23:05:20 +00:00
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for( int angle = 0; angle < 1800; angle += delta )
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2018-01-20 18:34:50 +00:00
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{
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corner = wxPoint( 0, -radius );
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2020-09-10 23:05:20 +00:00
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RotatePoint( &corner, angle );
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2018-01-20 18:34:50 +00:00
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polyshape.Append( corner.x, corner.y );
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}
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// Finish arc:
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corner = wxPoint( 0, radius );
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polyshape.Append( corner.x, corner.y );
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2018-01-20 19:44:04 +00:00
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2020-09-10 23:05:20 +00:00
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// Now trim the edges of the polygonal shape which will be slightly outside the
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// track width.
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SHAPE_POLY_SET bbox;
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bbox.NewOutline();
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// Build the bbox (a horizontal rectangle).
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int halfwidth = aWidth / 2; // Use the exact segment width for the bbox height
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corner.x = -radius - 2; // use a bbox width slightly bigger to avoid
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// creating useless corner at segment ends
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corner.y = halfwidth;
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bbox.Append( corner.x, corner.y );
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corner.y = -halfwidth;
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bbox.Append( corner.x, corner.y );
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corner.x = radius + seg_len + 2;
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bbox.Append( corner.x, corner.y );
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corner.y = halfwidth;
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bbox.Append( corner.x, corner.y );
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// Now, clamp the shape
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polyshape.BooleanIntersection( bbox, SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
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// Note the final polygon is a simple, convex polygon with no hole
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// due to the shape of initial polygons
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2018-01-20 18:34:50 +00:00
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// Rotate and move the polygon to its right location
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polyshape.Rotate( delta_angle, VECTOR2I( 0, 0 ) );
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polyshape.Move( startp );
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2018-01-20 19:44:04 +00:00
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aCornerBuffer.Append( polyshape);
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2018-01-20 18:34:50 +00:00
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}
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2019-05-22 13:33:48 +00:00
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2020-10-14 14:55:06 +00:00
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// Return a polygon representing a round rect centered at {0,0}
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void TransformRoundRectToPolygon( SHAPE_POLY_SET& aCornerBuffer, const wxSize& aSize,
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int aCornerRadius, int aError, ERROR_LOC aErrorLoc )
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2016-02-10 16:02:40 +00:00
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{
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2020-11-14 07:50:58 +00:00
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SHAPE_POLY_SET outline;
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2020-10-14 14:55:06 +00:00
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wxPoint centers[4];
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wxSize size( aSize / 2 );
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2016-02-10 16:02:40 +00:00
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2020-10-14 14:55:06 +00:00
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size.x -= aCornerRadius;
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size.y -= aCornerRadius;
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2016-02-10 16:02:40 +00:00
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2020-10-14 14:55:06 +00:00
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// Ensure size is > 0, to avoid generating unusable shapes which can crash kicad.
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2020-06-22 19:35:09 +00:00
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size.x = std::max( 1, size.x );
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size.y = std::max( 1, size.y );
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2016-02-10 16:02:40 +00:00
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2020-10-14 14:55:06 +00:00
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centers[0] = wxPoint( -size.x, size.y );
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centers[1] = wxPoint( size.x, size.y );
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centers[2] = wxPoint( size.x, -size.y );
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centers[3] = wxPoint( -size.x, -size.y );
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2016-02-10 16:02:40 +00:00
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2020-09-10 23:05:20 +00:00
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int numSegs = GetArcToSegmentCount( aCornerRadius, aError, 360.0 );
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2020-07-05 16:16:33 +00:00
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2020-09-11 13:41:45 +00:00
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// Choppy corners on rounded-corner rectangles look awful so enforce a minimum of
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// 4 segments per corner.
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if( numSegs < 16 )
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numSegs = 16;
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2020-10-14 14:55:06 +00:00
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int delta = 3600 / numSegs; // rotate angle in 0.1 degree
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2020-10-13 10:55:24 +00:00
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int radius = aCornerRadius;
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2020-07-05 16:16:33 +00:00
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2020-10-13 10:55:24 +00:00
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if( aErrorLoc == ERROR_OUTSIDE )
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2021-07-05 15:40:26 +00:00
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{
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// The outer radius should be radius+aError
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// Recalculate the actual approx error, as it can be smaller than aError
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// because numSegs is clamped to a minimal value
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int actual_delta_radius = CircleToEndSegmentDeltaRadius( radius, numSegs );
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radius += GetCircleToPolyCorrection( actual_delta_radius );
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}
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2016-02-10 16:02:40 +00:00
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2020-10-14 14:55:06 +00:00
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auto genArc =
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[&]( const wxPoint& aCenter, int aStart, int aEnd )
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2021-04-08 22:50:40 +00:00
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{
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for( int angle = aStart + delta; angle < aEnd; angle += delta )
|
|
|
|
{
|
|
|
|
wxPoint pt( -radius, 0 );
|
|
|
|
RotatePoint( &pt, angle );
|
|
|
|
pt += aCenter;
|
|
|
|
outline.Append( pt.x, pt.y );
|
|
|
|
}
|
|
|
|
};
|
2018-08-29 07:13:07 +00:00
|
|
|
|
2020-11-14 07:50:58 +00:00
|
|
|
outline.NewOutline();
|
2018-08-29 07:13:07 +00:00
|
|
|
|
2020-11-14 07:50:58 +00:00
|
|
|
outline.Append( centers[0] + wxPoint( -radius, 0 ) );
|
2020-10-14 14:55:06 +00:00
|
|
|
genArc( centers[0], 0, 900 );
|
2020-11-14 07:50:58 +00:00
|
|
|
outline.Append( centers[0] + wxPoint( 0, radius ) );
|
|
|
|
outline.Append( centers[1] + wxPoint( 0, radius ) );
|
2020-10-14 14:55:06 +00:00
|
|
|
genArc( centers[1], 900, 1800 );
|
2020-11-14 07:50:58 +00:00
|
|
|
outline.Append( centers[1] + wxPoint( radius, 0 ) );
|
|
|
|
outline.Append( centers[2] + wxPoint( radius, 0 ) );
|
2020-10-14 14:55:06 +00:00
|
|
|
genArc( centers[2], 1800, 2700 );
|
2020-11-14 07:50:58 +00:00
|
|
|
outline.Append( centers[2] + wxPoint( 0, -radius ) );
|
|
|
|
outline.Append( centers[3] + wxPoint( 0, -radius ) );
|
2020-10-14 14:55:06 +00:00
|
|
|
genArc( centers[3], 2700, 3600 );
|
2020-11-14 07:50:58 +00:00
|
|
|
outline.Append( centers[3] + wxPoint( -radius, 0 ) );
|
|
|
|
|
|
|
|
outline.Outline( 0 ).SetClosed( true );
|
|
|
|
|
|
|
|
// The created outlines are bigger than the actual outlines, due to the fact
|
|
|
|
// the corner radius is bigger than the initial value when building a shape outside the
|
|
|
|
// actual shape.
|
|
|
|
// However the bounding box shape does not need to be bigger: only rounded corners must
|
|
|
|
// be modified.
|
|
|
|
// So clamp the too big shape by the actual bounding box
|
|
|
|
if( aErrorLoc == ERROR_OUTSIDE )
|
|
|
|
{
|
|
|
|
SHAPE_POLY_SET bbox;
|
|
|
|
bbox.NewOutline();
|
|
|
|
wxSize bbox_size = aSize/2;
|
|
|
|
|
|
|
|
bbox.Append( wxPoint( -bbox_size.x, -bbox_size.y ) );
|
|
|
|
bbox.Append( wxPoint( bbox_size.x, -bbox_size.y ) );
|
|
|
|
bbox.Append( wxPoint( bbox_size.x, bbox_size.y ) );
|
|
|
|
bbox.Append( wxPoint( -bbox_size.x, bbox_size.y ) );
|
|
|
|
bbox.Outline( 0 ).SetClosed( true );
|
|
|
|
|
|
|
|
outline.BooleanIntersection( bbox, SHAPE_POLY_SET::PM_FAST );
|
|
|
|
// The result is a convex polygon, no need to simplify or fracture.
|
|
|
|
}
|
2020-10-14 14:55:06 +00:00
|
|
|
|
2020-11-14 07:50:58 +00:00
|
|
|
// Add the outline:
|
|
|
|
aCornerBuffer.Append( outline );
|
2020-10-14 14:55:06 +00:00
|
|
|
}
|
2018-08-29 07:13:07 +00:00
|
|
|
|
|
|
|
|
2020-10-14 14:55:06 +00:00
|
|
|
void TransformRoundChamferedRectToPolygon( SHAPE_POLY_SET& aCornerBuffer, const wxPoint& aPosition,
|
|
|
|
const wxSize& aSize, double aRotation,
|
|
|
|
int aCornerRadius, double aChamferRatio,
|
|
|
|
int aChamferCorners, int aError, ERROR_LOC aErrorLoc )
|
|
|
|
{
|
|
|
|
SHAPE_POLY_SET outline;
|
|
|
|
TransformRoundRectToPolygon( outline, aSize, aCornerRadius, aError, aErrorLoc );
|
|
|
|
|
|
|
|
if( aChamferCorners )
|
2018-08-29 07:13:07 +00:00
|
|
|
{
|
2020-10-14 14:55:06 +00:00
|
|
|
// Now we have the round rect outline, in position 0,0 orientation 0.0.
|
|
|
|
// Chamfer the corner(s).
|
|
|
|
int chamfer_value = aChamferRatio * std::min( aSize.x, aSize.y );
|
2018-08-29 07:13:07 +00:00
|
|
|
|
2020-10-14 14:55:06 +00:00
|
|
|
SHAPE_POLY_SET chamfered_corner; // corner shape for the current corner to chamfer
|
2018-08-29 07:13:07 +00:00
|
|
|
|
2020-10-14 14:55:06 +00:00
|
|
|
int corner_id[4] =
|
2018-08-29 07:13:07 +00:00
|
|
|
{
|
2020-10-14 14:55:06 +00:00
|
|
|
RECT_CHAMFER_TOP_LEFT, RECT_CHAMFER_TOP_RIGHT,
|
|
|
|
RECT_CHAMFER_BOTTOM_LEFT, RECT_CHAMFER_BOTTOM_RIGHT
|
|
|
|
};
|
|
|
|
// Depending on the corner position, signX[] and signY[] give the sign of chamfer
|
|
|
|
// coordinates relative to the corner position
|
|
|
|
// The first corner is the top left corner, then top right, bottom left and bottom right
|
|
|
|
int signX[4] = {1, -1, 1,-1 };
|
|
|
|
int signY[4] = {1, 1, -1,-1 };
|
|
|
|
|
|
|
|
for( int ii = 0; ii < 4; ii++ )
|
|
|
|
{
|
|
|
|
if( (corner_id[ii] & aChamferCorners) == 0 )
|
|
|
|
continue;
|
|
|
|
|
|
|
|
VECTOR2I corner_pos( -signX[ii]*aSize.x/2, -signY[ii]*aSize.y/2 );
|
|
|
|
|
|
|
|
if( aCornerRadius )
|
|
|
|
{
|
|
|
|
// We recreate a rectangular area covering the full rounded corner
|
|
|
|
// (max size = aSize/2) to rebuild the corner before chamfering, to be sure
|
|
|
|
// the rounded corner shape does not overlap the chamfered corner shape:
|
|
|
|
chamfered_corner.RemoveAllContours();
|
|
|
|
chamfered_corner.NewOutline();
|
|
|
|
chamfered_corner.Append( 0, 0 );
|
|
|
|
chamfered_corner.Append( 0, signY[ii] * aSize.y / 2 );
|
|
|
|
chamfered_corner.Append( signX[ii] * aSize.x / 2, signY[ii] * aSize.y / 2 );
|
|
|
|
chamfered_corner.Append( signX[ii] * aSize.x / 2, 0 );
|
|
|
|
chamfered_corner.Move( corner_pos );
|
|
|
|
outline.BooleanAdd( chamfered_corner, SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
|
|
|
|
}
|
|
|
|
|
|
|
|
// Now chamfer this corner
|
2018-08-29 07:13:07 +00:00
|
|
|
chamfered_corner.RemoveAllContours();
|
|
|
|
chamfered_corner.NewOutline();
|
|
|
|
chamfered_corner.Append( 0, 0 );
|
2020-10-14 14:55:06 +00:00
|
|
|
chamfered_corner.Append( 0, signY[ii] * chamfer_value );
|
|
|
|
chamfered_corner.Append( signX[ii] * chamfer_value, 0 );
|
2018-08-29 07:13:07 +00:00
|
|
|
chamfered_corner.Move( corner_pos );
|
2020-10-14 14:55:06 +00:00
|
|
|
outline.BooleanSubtract( chamfered_corner, SHAPE_POLY_SET::PM_STRICTLY_SIMPLE );
|
2018-08-29 07:13:07 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
// Rotate and move the outline:
|
|
|
|
if( aRotation != 0.0 )
|
|
|
|
outline.Rotate( DECIDEG2RAD( -aRotation ), VECTOR2I( 0, 0 ) );
|
|
|
|
|
|
|
|
outline.Move( VECTOR2I( aPosition ) );
|
|
|
|
|
2016-02-10 16:02:40 +00:00
|
|
|
// Add the outline:
|
|
|
|
aCornerBuffer.Append( outline );
|
|
|
|
}
|
|
|
|
|
2013-05-26 04:36:44 +00:00
|
|
|
|
2021-06-30 11:33:49 +00:00
|
|
|
static int convertArcToPolyline( SHAPE_LINE_CHAIN& aPolyline, VECTOR2I aCenter, int aRadius,
|
|
|
|
double aStartAngle, double aArcAngle, double aAccuracy,
|
|
|
|
ERROR_LOC aErrorLoc )
|
|
|
|
{
|
|
|
|
double endAngle = aStartAngle + aArcAngle;
|
|
|
|
int n = 2;
|
|
|
|
|
|
|
|
if( aRadius >= aAccuracy )
|
|
|
|
n = GetArcToSegmentCount( aRadius, aAccuracy, aArcAngle )+1; // n >= 3
|
|
|
|
|
|
|
|
if( aErrorLoc == ERROR_OUTSIDE )
|
|
|
|
{
|
|
|
|
int seg360 = std::abs( KiROUND( n * 360.0 / aArcAngle ) );
|
|
|
|
int actual_delta_radius = CircleToEndSegmentDeltaRadius( aRadius, seg360 );
|
|
|
|
aRadius += actual_delta_radius;
|
|
|
|
}
|
|
|
|
|
|
|
|
for( int i = 0; i <= n ; i++ )
|
|
|
|
{
|
|
|
|
double rot = aStartAngle;
|
|
|
|
rot += ( aArcAngle * i ) / n;
|
|
|
|
|
|
|
|
double x = aCenter.x + aRadius * cos( rot * M_PI / 180.0 );
|
|
|
|
double y = aCenter.y + aRadius * sin( rot * M_PI / 180.0 );
|
|
|
|
|
|
|
|
aPolyline.Append( KiROUND( x ), KiROUND( y ) );
|
|
|
|
}
|
|
|
|
|
|
|
|
return n;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2020-10-23 22:27:02 +00:00
|
|
|
void TransformArcToPolygon( SHAPE_POLY_SET& aCornerBuffer, wxPoint aStart, wxPoint aMid,
|
|
|
|
wxPoint aEnd, int aWidth, int aError, ERROR_LOC aErrorLoc )
|
2013-05-26 04:36:44 +00:00
|
|
|
{
|
2020-10-23 22:27:02 +00:00
|
|
|
SHAPE_ARC arc( aStart, aMid, aEnd, aWidth );
|
2021-06-30 11:33:49 +00:00
|
|
|
// Currentlye have currently 2 algos:
|
|
|
|
// the first approximates the thick arc from its outlines
|
|
|
|
// the second approximates the thick arc from segments given by SHAPE_ARC
|
|
|
|
// using SHAPE_ARC::ConvertToPolyline
|
|
|
|
// The actual approximation errors are similar but not exactly the same.
|
|
|
|
//
|
|
|
|
// For now, both algorithms are kept, the second is the initial algo used in Kicad.
|
|
|
|
|
|
|
|
#if 1
|
|
|
|
// This appproximation convert the 2 ends to polygons, arc outer to polyline
|
|
|
|
// and arc inner to polyline and merge shapes.
|
2021-06-11 19:34:57 +00:00
|
|
|
int radial_offset = ( aWidth + 1 ) / 2;
|
2021-06-30 11:33:49 +00:00
|
|
|
|
2021-06-25 16:46:16 +00:00
|
|
|
SHAPE_POLY_SET polyshape;
|
|
|
|
std::vector<VECTOR2I> outside_pts;
|
2021-06-11 19:34:57 +00:00
|
|
|
|
|
|
|
/// We start by making rounded ends on the arc
|
2021-06-30 11:33:49 +00:00
|
|
|
TransformCircleToPolygon( polyshape, aStart, radial_offset, aError, aErrorLoc );
|
|
|
|
TransformCircleToPolygon( polyshape, aEnd, radial_offset, aError, aErrorLoc );
|
|
|
|
|
|
|
|
// The circle polygon is built with a even number of segments, so the
|
|
|
|
// horizontal diameter has 2 corners on the biggest diameter
|
|
|
|
// Rotate these 2 corners to match the start and ens points of inner and outer
|
|
|
|
// end points of the arc appoximation outlines, build below.
|
|
|
|
// The final shape is much better.
|
|
|
|
double arc_angle_start_deg = arc.GetStartAngle();
|
|
|
|
double arc_angle = arc.GetCentralAngle();
|
|
|
|
double arc_angle_end_deg = arc_angle_start_deg + arc_angle;
|
2021-06-11 19:34:57 +00:00
|
|
|
|
2021-06-30 11:33:49 +00:00
|
|
|
if( arc_angle_start_deg != 0 && arc_angle_start_deg != 180.0 )
|
|
|
|
polyshape.Outline(0).Rotate( arc_angle_start_deg * M_PI/180.0, aStart );
|
|
|
|
|
|
|
|
if( arc_angle_end_deg != 0 && arc_angle_end_deg != 180.0 )
|
|
|
|
polyshape.Outline(1).Rotate( arc_angle_end_deg * M_PI/180.0, aEnd );
|
|
|
|
|
|
|
|
VECTOR2I center = arc.GetCenter();
|
|
|
|
int radius = arc.GetRadius();
|
|
|
|
|
|
|
|
int arc_outer_radius = radius + radial_offset;
|
|
|
|
int arc_inner_radius = radius - radial_offset;
|
|
|
|
ERROR_LOC errorLocInner = ERROR_OUTSIDE;
|
|
|
|
ERROR_LOC errorLocOuter = ERROR_INSIDE;
|
|
|
|
|
|
|
|
if( aErrorLoc == ERROR_OUTSIDE )
|
|
|
|
{
|
|
|
|
errorLocInner = ERROR_INSIDE;
|
|
|
|
errorLocOuter = ERROR_OUTSIDE;
|
|
|
|
}
|
|
|
|
|
|
|
|
polyshape.NewOutline();
|
|
|
|
|
|
|
|
convertArcToPolyline( polyshape.Outline(2), center, arc_outer_radius,
|
|
|
|
arc_angle_start_deg, arc_angle, aError, errorLocOuter );
|
|
|
|
|
|
|
|
if( arc_inner_radius > 0 )
|
|
|
|
convertArcToPolyline( polyshape.Outline(2), center, arc_inner_radius,
|
|
|
|
arc_angle_end_deg, -arc_angle, aError, errorLocInner );
|
|
|
|
else
|
|
|
|
polyshape.Append( center );
|
|
|
|
#else
|
|
|
|
// This appproximation use SHAPE_ARC to convert the 2 ends to polygons,
|
|
|
|
// approximate arc to polyline, convert the polyline corners to outer and inner
|
|
|
|
// corners of outer and inner utliners and merge shapes.
|
|
|
|
double defaultErr;
|
|
|
|
SHAPE_LINE_CHAIN arcSpine = arc.ConvertToPolyline( SHAPE_ARC::DefaultAccuracyForPCB(),
|
|
|
|
&defaultErr);
|
|
|
|
int radius = arc.GetRadius();
|
|
|
|
int radial_offset = ( aWidth + 1 ) / 2;
|
|
|
|
SHAPE_POLY_SET polyshape;
|
|
|
|
std::vector<VECTOR2I> outside_pts;
|
|
|
|
|
|
|
|
// delta is the effective error approximation to build a polyline from an arc
|
|
|
|
int segCnt360 = arcSpine.GetSegmentCount()*360.0/arc.GetCentralAngle();;
|
|
|
|
int delta = CircleToEndSegmentDeltaRadius( radius+radial_offset, std::abs(segCnt360) );
|
|
|
|
|
|
|
|
/// We start by making rounded ends on the arc
|
|
|
|
TransformCircleToPolygon( polyshape, aStart, radial_offset, aError, aErrorLoc );
|
|
|
|
TransformCircleToPolygon( polyshape, aEnd, radial_offset, aError, aErrorLoc );
|
2013-05-26 04:36:44 +00:00
|
|
|
|
2021-06-26 11:18:46 +00:00
|
|
|
// The circle polygon is built with a even number of segments, so the
|
|
|
|
// horizontal diameter has 2 corners on the biggest diameter
|
|
|
|
// Rotate these 2 corners to match the start and ens points of inner and outer
|
|
|
|
// end points of the arc appoximation outlines, build below.
|
|
|
|
// The final shape is much better.
|
|
|
|
double arc_angle_end_deg = arc.GetStartAngle();
|
|
|
|
|
2021-06-26 17:44:18 +00:00
|
|
|
if( arc_angle_end_deg != 0 && arc_angle_end_deg != 180.0 )
|
2021-06-26 11:18:46 +00:00
|
|
|
polyshape.Outline(0).Rotate( arc_angle_end_deg * M_PI/180.0, arcSpine.GetPoint( 0 ) );
|
|
|
|
|
|
|
|
arc_angle_end_deg = arc.GetEndAngle();
|
|
|
|
|
2021-06-26 17:44:18 +00:00
|
|
|
if( arc_angle_end_deg != 0 && arc_angle_end_deg != 180.0 )
|
2021-06-26 11:18:46 +00:00
|
|
|
polyshape.Outline(1).Rotate( arc_angle_end_deg * M_PI/180.0, arcSpine.GetPoint( -1 ) );
|
|
|
|
|
2020-10-23 22:27:02 +00:00
|
|
|
if( aErrorLoc == ERROR_OUTSIDE )
|
2021-06-30 11:33:49 +00:00
|
|
|
radial_offset += delta + defaultErr/2;
|
2020-10-23 22:27:02 +00:00
|
|
|
else
|
2021-06-30 11:33:49 +00:00
|
|
|
radial_offset -= defaultErr/2;
|
2021-06-11 19:34:57 +00:00
|
|
|
|
|
|
|
if( radial_offset < 0 )
|
|
|
|
radial_offset = 0;
|
|
|
|
|
|
|
|
polyshape.NewOutline();
|
|
|
|
|
|
|
|
VECTOR2I center = arc.GetCenter();
|
2021-06-25 16:46:16 +00:00
|
|
|
int last_index = arcSpine.GetPointCount() -1;
|
2013-05-26 04:36:44 +00:00
|
|
|
|
2021-06-25 16:46:16 +00:00
|
|
|
for( std::size_t ii = 0; ii <= last_index; ++ii )
|
2013-05-26 04:36:44 +00:00
|
|
|
{
|
2021-06-11 19:34:57 +00:00
|
|
|
VECTOR2I offset = arcSpine.GetPoint( ii ) - center;
|
2021-06-25 16:46:16 +00:00
|
|
|
int curr_rd = radius;
|
2013-05-26 04:36:44 +00:00
|
|
|
|
2021-06-25 16:46:16 +00:00
|
|
|
polyshape.Append( offset.Resize( curr_rd - radial_offset ) + center );
|
|
|
|
outside_pts.emplace_back( offset.Resize( curr_rd + radial_offset ) + center );
|
2013-05-26 04:36:44 +00:00
|
|
|
}
|
2021-06-11 19:34:57 +00:00
|
|
|
|
|
|
|
for( auto it = outside_pts.rbegin(); it != outside_pts.rend(); ++it )
|
|
|
|
polyshape.Append( *it );
|
2021-06-30 11:33:49 +00:00
|
|
|
#endif
|
2021-06-11 19:34:57 +00:00
|
|
|
|
2021-06-25 16:46:16 +00:00
|
|
|
// Can be removed, but usefull to display the outline:
|
|
|
|
polyshape.Simplify( SHAPE_POLY_SET::PM_FAST );
|
|
|
|
|
2021-06-11 19:34:57 +00:00
|
|
|
aCornerBuffer.Append( polyshape );
|
|
|
|
|
2013-05-26 04:36:44 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2020-06-22 19:35:09 +00:00
|
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void TransformRingToPolygon( SHAPE_POLY_SET& aCornerBuffer, wxPoint aCentre, int aRadius,
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2020-10-13 10:55:24 +00:00
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int aWidth, int aError, ERROR_LOC aErrorLoc )
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2013-05-26 04:36:44 +00:00
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{
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2020-06-22 19:35:09 +00:00
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int inner_radius = aRadius - ( aWidth / 2 );
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int outer_radius = inner_radius + aWidth;
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2015-07-27 19:45:57 +00:00
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2016-10-13 08:26:49 +00:00
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if( inner_radius <= 0 )
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{ //In this case, the ring is just a circle (no hole inside)
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2020-10-13 10:55:24 +00:00
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TransformCircleToPolygon( aCornerBuffer, aCentre, aRadius + ( aWidth / 2 ), aError,
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aErrorLoc );
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2016-10-13 08:26:49 +00:00
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return;
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}
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2019-05-09 14:23:18 +00:00
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SHAPE_POLY_SET buffer;
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2016-10-13 08:26:49 +00:00
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2020-10-13 10:55:24 +00:00
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TransformCircleToPolygon( buffer, aCentre, outer_radius, aError, aErrorLoc );
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2013-05-26 04:36:44 +00:00
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2019-05-09 14:23:18 +00:00
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// Build the hole:
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buffer.NewHole();
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2020-10-13 10:55:24 +00:00
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TransformCircleToPolygon( buffer.Hole( 0, 0 ), aCentre, inner_radius, aError, aErrorLoc );
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2018-01-19 20:30:43 +00:00
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2019-05-09 14:23:18 +00:00
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buffer.Fracture( SHAPE_POLY_SET::PM_FAST );
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aCornerBuffer.Append( buffer );
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2013-05-26 04:36:44 +00:00
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}
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