180 lines
7.6 KiB
C++
180 lines
7.6 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) 2012 Jean-Pierre Charras, jp.charras at wanadoo.fr
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* Copyright (C) 1992-2019 KiCad Developers, see change_log.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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#ifndef CONVERT_BASIC_SHAPES_TO_POLYGON_H
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#define CONVERT_BASIC_SHAPES_TO_POLYGON_H
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/**
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* @file convert_basic_shapes_to_polygon.h
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*/
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#include <vector>
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#include <fctsys.h>
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#include <trigo.h>
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#include <macros.h>
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#include <geometry/shape_poly_set.h>
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// The chamfer positions of chamfered rect shape.
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// the position is relative to a pad with orientation = 0
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// we can have 1 to 4 chamfered corners (0 corner = roundrect)
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// The position list is the OR of corner to chamfer
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enum RECT_CHAMFER_POSITIONS : int
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{
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RECT_NO_CHAMFER = 0,
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RECT_CHAMFER_TOP_LEFT = 1,
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RECT_CHAMFER_TOP_RIGHT = 2,
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RECT_CHAMFER_BOTTOM_LEFT = 4,
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RECT_CHAMFER_BOTTOM_RIGHT = 8,
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RECT_CHAMFER_ALL = RECT_CHAMFER_BOTTOM_RIGHT | RECT_CHAMFER_BOTTOM_LEFT
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| RECT_CHAMFER_TOP_RIGHT | RECT_CHAMFER_TOP_LEFT
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};
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/**
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* Function TransformCircleToPolygon
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* convert a circle to a polygon, using multiple straight lines
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* @param aCornerBuffer = a buffer to store the polygon
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* @param aCenter = the center of the circle
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* @param aRadius = the radius of the circle
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* @param aError = the IU allowed for error in approximation
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* Note: the polygon is inside the circle, so if you want to have the polygon
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* outside the circle, you should give aRadius calculated with a correction factor
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*/
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void TransformCircleToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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wxPoint aCenter, int aRadius,
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int aError );
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/**
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* convert a oblong shape to a polygon, using multiple segments
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* It is similar to TransformRoundedEndsSegmentToPolygon, but the polygon
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* is outside the actual oblong shape (a segment with rounded ends)
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* It is suitable to create oblong clearance areas.
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* because multiple segments create a smaller area than the circle, the
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* radius of the circle to approximate must be bigger ( radius*aCorrectionFactor)
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* to create segments outside the circle.
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* @param aCornerBuffer = a buffer to store the polygon
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* @param aStart = the first point of the segment
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* @param aEnd = the second point of the segment
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* @param aWidth = the width of the segment
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* @param aError = the IU allowed for error in approximation
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*/
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void TransformOvalClearanceToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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wxPoint aStart, wxPoint aEnd, int aWidth,
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int aError );
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/**
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* Helper function GetRoundRectCornerCenters
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* Has meaning only for rounded rect
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* Returns the centers of the rounded corners.
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* @param aCenters is the buffer to store the 4 coordinates.
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* @param aRadius = the radius of the of the rounded corners.
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* @param aPosition = position of the round rect
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* @param aSize = size of the of the round rect.
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* @param aRotation = rotation of the of the round rect
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*/
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void GetRoundRectCornerCenters( wxPoint aCenters[4], int aRadius,
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const wxPoint& aPosition, const wxSize& aSize, double aRotation );
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/**
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* convert a rectangle with rounded corners and/or chamfered corners to a polygon
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* Convert rounded corners arcs to multiple straight lines
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* @param aCornerBuffer = a buffer to store the polygon
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* @param aPosition = the coordinate of the center of the rectangle
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* @param aSize = the size of the rectangle
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* @param aCornerRadius = radius of rounded corners (can be 0)
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* @param aRotation = rotation in 0.1 degrees of the rectangle
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* @param aChamferRatio = ratio between smaller rect size and chamfer value
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* @param aChamferCorners = identifier of the corners to chamfer:
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* 0 = no chamfer
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* 1 = TOP_LEFT
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* 2 = TOP_RIGHT
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* 4 = BOTTOM_LEFT
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* 8 = BOTTOM_RIGHT
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* One can have more than one chamfered corner by ORing the corner identifers
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* @param aApproxErrorMax = the IU allowed for error in approximation
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* @param aMinSegPerCircleCount = the minimal segments per circle count in approximation
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* (aApproxErrorMax can generate must more seg count than aMinSegPerCircleCount)
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* To allow a reasonable good shape even for very small shapes, the min count is 16
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* (must be a multiple of 4 becauseusually arcs are 90 deg.
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*/
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void TransformRoundChamferedRectToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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const wxPoint& aPosition, const wxSize& aSize,
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double aRotation, int aCornerRadius,
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double aChamferRatio, int aChamferCorners,
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int aApproxErrorMax, int aMinSegPerCircleCount = 16 );
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/**
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* Function TransformRoundedEndsSegmentToPolygon
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* convert a segment with rounded ends to a polygon
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* Convert arcs to multiple straight lines
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* @param aCornerBuffer = a buffer to store the polygon
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* @param aStart = the segment start point coordinate
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* @param aEnd = the segment end point coordinate
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* @param aError = the IU allowed for error in approximation
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* @param aWidth = the segment width
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* Note: the polygon is inside the arc ends, so if you want to have the polygon
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* outside the circle, you should give aStart and aEnd calculated with a correction factor
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*/
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void TransformRoundedEndsSegmentToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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wxPoint aStart, wxPoint aEnd,
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int aError,
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int aWidth );
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/**
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* Function TransformArcToPolygon
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* Creates a polygon from an Arc
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* Convert arcs to multiple straight segments
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* @param aCornerBuffer = a buffer to store the polygon
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* @param aCentre = centre of the arc or circle
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* @param aStart = start point of the arc, or a point on the circle
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* @param aArcAngle = arc angle in 0.1 degrees. For a circle, aArcAngle = 3600
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* @param aError = the IU allowed for error in approximation
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* @param aWidth = width (thickness) of the line
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*/
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void TransformArcToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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wxPoint aCentre, wxPoint aStart, double aArcAngle,
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int aError, int aWidth );
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/**
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* Function TransformRingToPolygon
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* Creates a polygon from a ring
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* Convert arcs to multiple straight segments
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* @param aCornerBuffer = a buffer to store the polygon
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* @param aCentre = centre of the arc or circle
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* @param aRadius = radius of the circle
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* @param aError = the IU allowed for error in approximation
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* @param aWidth = width (thickness) of the ring
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*/
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void TransformRingToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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wxPoint aCentre, int aRadius,
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int aError, int aWidth );
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#endif // CONVERT_BASIC_SHAPES_TO_POLYGON_H
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