192 lines
8.9 KiB
C
192 lines
8.9 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) 1992-2021 KiCad Developers, see AUTHORS.txt for contributors.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, you may find one here:
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* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
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* or you may search the http://www.gnu.org website for the version 2 license,
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* or you may write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#ifndef CONVERT_BASIC_SHAPES_TO_POLYGON_H
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#define CONVERT_BASIC_SHAPES_TO_POLYGON_H
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#include <geometry/shape_poly_set.h>
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#include <geometry/geometry_utils.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
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| RECT_CHAMFER_BOTTOM_LEFT
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| RECT_CHAMFER_TOP_RIGHT
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| RECT_CHAMFER_TOP_LEFT
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};
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/**
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* Generate a polyline to approximate a arc
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*
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* @param aPolyline is a buffer to store the polyline.
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* @param aCenter is the center of the arc.
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* @param aRadius is the radius of the arc.
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* @param aStartAngleDeg is the starting point of the arc.
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* @param aArcAngleDeg is the angle of the arc.
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* @param aError is the internal units allowed for error approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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*/
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int ConvertArcToPolyline( SHAPE_LINE_CHAIN& aPolyline, VECTOR2I aCenter, int aRadius,
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const EDA_ANGLE& aStartAngleDeg, const EDA_ANGLE& aArcAngleDeg,
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double aAccuracy, ERROR_LOC aErrorLoc );
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/**
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* Convert a circle to a polygon, using multiple straight lines.
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*
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* @param aCornerBuffer is a buffer to store the polygon.
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* @param aCenter is the center of the circle.
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* @param aRadius is the radius of the circle.
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* @param aError is the internal units allowed for error approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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* @param aMinSegCount is the min count of segments to approximate.
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* Default = 0 to do not force a min count.
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*/
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void TransformCircleToPolygon( SHAPE_LINE_CHAIN& aCornerBuffer, const VECTOR2I& aCenter,
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int aRadius, int aError, ERROR_LOC aErrorLoc, int aMinSegCount = 0 );
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/**
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* Convert a circle to a polygon, using multiple straight lines.
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*
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* @param aCornerBuffer is a buffer to store the polygon.
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* @param aCenter is the center of the circle.
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* @param aRadius is the radius of the circle.
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* @param aError is the internal units allowed for error in approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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* @param aMinSegCount is the min count of segments to approximate.
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* Default = 0 to do not force a min count.
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*/
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void TransformCircleToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aCenter, int aRadius,
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int aError, ERROR_LOC aErrorLoc, int aMinSegCount = 0 );
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/**
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* Convert a oblong shape to a polygon, using multiple segments.
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*
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* It is similar to TransformRoundedEndsSegmentToPolygon, but the polygon is outside the actual
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* oblong shape (a segment with rounded ends). It is suitable to create oblong clearance areas
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* because multiple segments create a smaller area than the circle. The radius of the circle to
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* approximate must be bigger ( radius*aCorrectionFactor) to create segments outside the circle.
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*
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* @param aCornerBuffer is a buffer to store the polygon.
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* @param aStart is the first point of the segment.
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* @param aEnd is the second point of the segment.
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* @param aWidth is the width of the segment.
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* @param aError is the internal units allowed for error in approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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* @param aMinSegCount is the min count of segments to approximate.
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* Default = 0 to do not force a min count.
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*/
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void TransformOvalToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aStart,
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const VECTOR2I& aEnd, int aWidth, int aError, ERROR_LOC aErrorLoc,
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int aMinSegCount = 0 );
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/**
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* Convert a rectangle or trapezoid to a polygon.
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*
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* This will generate at least 16 segments per circle (when using inflate).
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*
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* @param aCornerBuffer is a buffer to store the polygon.
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* @param aPosition is the coordinate of the center of the rectangle.
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* @param aSize is the size of the rectangle.
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* @param aDeltaX is the delta for trapezoids in X direction
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* @param aDeltaY is the delta for trapezoids in Y direction
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* @param aInflate is the (positive) shape inflation or 0
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* @param aError is the IU allowed for error in approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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*/
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void TransformTrapezoidToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aPosition,
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const VECTOR2I& aSize, const EDA_ANGLE& aRotation, int aDeltaX,
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int aDeltaY, int aInflate, int aError, ERROR_LOC aErrorLoc );
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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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*
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* Convert rounded corners arcs to multiple straight lines. This will generate at least
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* 16 segments per circle.
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*
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* @param aCornerBuffer is a buffer to store the polygon.
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* @param aPosition is the coordinate of the center of the rectangle.
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* @param aSize is the size of the rectangle.
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* @param aCornerRadius is the radius of rounded corners (can be 0).
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* @param aRotation is the rotationof the rectangle.
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* @param aChamferRatio is the ratio between smaller rect side and chamfer value.
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* @param aChamferCorners is the 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 identifiers.
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* @param aInflate is the (positive) shape inflation or 0
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* @param aError is the IU allowed for error in approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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*/
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void TransformRoundChamferedRectToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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const VECTOR2I& aPosition, const VECTOR2I& aSize,
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const EDA_ANGLE& aRotation, int aCornerRadius,
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double aChamferRatio, int aChamferCorners, int aInflate,
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int aError, ERROR_LOC aErrorLoc );
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/**
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* Convert arc to multiple straight segments.
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*
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* @param aCornerBuffer is a buffer to store the polygon.
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* @param aCentre is the center of the arc or circle.
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* @param aStart is the start point of the arc or a point on the circle.
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* @param aArcAngle is the arc angle in 0.1 degrees. For a circle, aArcAngle = 3600.
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* @param aWidth is the width (thickness) of the line.
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* @param aError is the internal units allowed for error in approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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*/
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void TransformArcToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aStart,
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const VECTOR2I& aMid, const VECTOR2I& aEnd, int aWidth, int aError,
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ERROR_LOC aErrorLoc );
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/**
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* Convert arcs to multiple straight segments.
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*
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* @param aCornerBuffer is a buffer to store the polygon.
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* @param aCentre is the center of the arc or circle.
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* @param aRadius is the radius of the circle.
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* @param aWidth is the width (thickness) of the ring.
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* @param aError is the internal units allowed for error in approximation.
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* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
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*/
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void TransformRingToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aCentre, int aRadius,
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int aWidth, int aError, ERROR_LOC aErrorLoc );
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#endif // CONVERT_BASIC_SHAPES_TO_POLYGON_H
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