kicad/libs/kimath/include/convert_basic_shapes_to_pol...

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2012 Jean-Pierre Charras, jp.charras at wanadoo.fr
* Copyright (C) 1992-2021 KiCad Developers, see AUTHORS.txt for contributors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you may find one here:
* http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* or you may search the http://www.gnu.org website for the version 2 license,
* or you may write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#ifndef CONVERT_BASIC_SHAPES_TO_POLYGON_H
#define CONVERT_BASIC_SHAPES_TO_POLYGON_H
#include <geometry/shape_poly_set.h>
#include <geometry/geometry_utils.h>
// The chamfer positions of chamfered rect shape.
// the position is relative to a pad with orientation = 0
// we can have 1 to 4 chamfered corners (0 corner = roundrect)
// The position list is the OR of corner to chamfer
enum RECT_CHAMFER_POSITIONS : int
{
RECT_NO_CHAMFER = 0,
RECT_CHAMFER_TOP_LEFT = 1,
RECT_CHAMFER_TOP_RIGHT = 2,
RECT_CHAMFER_BOTTOM_LEFT = 4,
RECT_CHAMFER_BOTTOM_RIGHT = 8,
RECT_CHAMFER_ALL = RECT_CHAMFER_BOTTOM_RIGHT
| RECT_CHAMFER_BOTTOM_LEFT
| RECT_CHAMFER_TOP_RIGHT
| RECT_CHAMFER_TOP_LEFT
};
/**
* Generate a polyline to approximate a arc
*
* @param aPolyline is a buffer to store the polyline.
* @param aCenter is the center of the arc.
* @param aRadius is the radius of the arc.
* @param aStartAngleDeg is the starting point (in degrees) of the arc.
* @param aArcAngleDeg is the angle (in degrees) of the arc.
* @param aError is the internal units allowed for error approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
*/
int ConvertArcToPolyline( SHAPE_LINE_CHAIN& aPolyline, VECTOR2I aCenter, int aRadius,
double aStartAngleDeg, double aArcAngleDeg, double aAccuracy,
ERROR_LOC aErrorLoc );
/**
* Convert a circle to a polygon, using multiple straight lines.
*
* @param aCornerBuffer is a buffer to store the polygon.
* @param aCenter is the center of the circle.
* @param aRadius is the radius of the circle.
* @param aError is the internal units allowed for error approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
* @param aMinSegCount is the min count of segments to approximate.
* Default = 0 to do not force a min count.
*/
void TransformCircleToPolygon( SHAPE_LINE_CHAIN& aCornerBuffer, const VECTOR2I& aCenter,
int aRadius, int aError, ERROR_LOC aErrorLoc, int aMinSegCount = 0 );
/**
* Convert a circle to a polygon, using multiple straight lines.
*
* @param aCornerBuffer is a buffer to store the polygon.
* @param aCenter is the center of the circle.
* @param aRadius is the radius of the circle.
* @param aError is the internal units allowed for error in approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
* @param aMinSegCount is the min count of segments to approximate.
* Default = 0 to do not force a min count.
*/
void TransformCircleToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aCenter, int aRadius,
int aError, ERROR_LOC aErrorLoc, int aMinSegCount = 0 );
/**
* Convert a oblong shape to a polygon, using multiple segments.
*
* It is similar to TransformRoundedEndsSegmentToPolygon, but the polygon is outside the actual
* oblong shape (a segment with rounded ends). It is suitable to create oblong clearance areas
* because multiple segments create a smaller area than the circle. The radius of the circle to
* approximate must be bigger ( radius*aCorrectionFactor) to create segments outside the circle.
*
* @param aCornerBuffer is a buffer to store the polygon.
* @param aStart is the first point of the segment.
* @param aEnd is the second point of the segment.
* @param aWidth is the width of the segment.
* @param aError is the internal units allowed for error in approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
* @param aMinSegCount is the min count of segments to approximate.
* Default = 0 to do not force a min count.
*/
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void TransformOvalToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aStart,
const VECTOR2I& aEnd, int aWidth, int aError, ERROR_LOC aErrorLoc,
int aMinSegCount = 0 );
/**
* Convert a rectangle or trapezoid to a polygon.
*
* This will generate at least 16 segments per circle (when using inflate).
*
* @param aCornerBuffer is a buffer to store the polygon.
* @param aPosition is the coordinate of the center of the rectangle.
* @param aSize is the size of the rectangle.
* @param aDeltaX is the delta for trapezoids in X direction
* @param aDeltaY is the delta for trapezoids in Y direction
* @param aInflate is the (positive) shape inflation or 0
* @param aError is the IU allowed for error in approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
*/
void TransformTrapezoidToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aPosition,
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const VECTOR2I& aSize, double aRotation, int aDeltaX, int aDeltaY,
int aInflate, int aError, ERROR_LOC aErrorLoc );
/**
* Convert a rectangle with rounded corners and/or chamfered corners to a polygon.
*
* Convert rounded corners arcs to multiple straight lines. This will generate at least
* 16 segments per circle.
*
* @param aCornerBuffer is a buffer to store the polygon.
* @param aPosition is the coordinate of the center of the rectangle.
* @param aSize is the size of the rectangle.
* @param aCornerRadius is the radius of rounded corners (can be 0).
* @param aRotation is the rotation in 0.1 degrees of the rectangle.
* @param aChamferRatio is the ratio between smaller rect side and chamfer value.
* @param aChamferCorners is the identifier of the corners to chamfer:
* - 0 = no chamfer
* - 1 = TOP_LEFT
* - 2 = TOP_RIGHT
* - 4 = BOTTOM_LEFT
* - 8 = BOTTOM_RIGHT
* One can have more than one chamfered corner by ORing the corner identifiers.
* @param aInflate is the (positive) shape inflation or 0
* @param aError is the IU allowed for error in approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
*/
void TransformRoundChamferedRectToPolygon( SHAPE_POLY_SET& aCornerBuffer,
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const VECTOR2I& aPosition, const VECTOR2I& aSize,
double aRotation, int aCornerRadius,
double aChamferRatio, int aChamferCorners, int aInflate,
int aError, ERROR_LOC aErrorLoc );
/**
* Convert arc to multiple straight segments.
*
* @param aCornerBuffer is a buffer to store the polygon.
* @param aCentre is the center of the arc or circle.
* @param aStart is the start point of the arc or a point on the circle.
* @param aArcAngle is the arc angle in 0.1 degrees. For a circle, aArcAngle = 3600.
* @param aWidth is the width (thickness) of the line.
* @param aError is the internal units allowed for error in approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
*/
void TransformArcToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aStart,
const VECTOR2I& aMid, const VECTOR2I& aEnd, int aWidth, int aError,
ERROR_LOC aErrorLoc );
/**
* Convert arcs to multiple straight segments.
*
* @param aCornerBuffer is a buffer to store the polygon.
* @param aCentre is the center of the arc or circle.
* @param aRadius is the radius of the circle.
* @param aWidth is the width (thickness) of the ring.
* @param aError is the internal units allowed for error in approximation.
* @param aErrorLoc determines if the approximation error be placed outside or inside the polygon.
*/
void TransformRingToPolygon( SHAPE_POLY_SET& aCornerBuffer, const VECTOR2I& aCentre, int aRadius,
int aWidth, int aError, ERROR_LOC aErrorLoc );
#endif // CONVERT_BASIC_SHAPES_TO_POLYGON_H