KiCad PCB EDA Suite
geometry_utils.h
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24 
30 #ifndef GEOMETRY_UTILS_H
31 #define GEOMETRY_UTILS_H
32 
33 #include <math.h> // for copysign
34 #include <stdlib.h> // for abs
35 
36 #include <math/vector2d.h>
37 
38 class EDA_RECT;
39 
46 
55 int GetArcToSegmentCount( int aRadius, int aErrorMax, double aArcAngleDegree );
56 
65 int CircleToEndSegmentDeltaRadius( int aInnerCircleRadius, int aSegCount );
66 
78 {
79 public:
82 };
83 
93 int GetCircleToPolyCorrection( int aMaxError );
94 
106 template<typename T>
107 VECTOR2<T> GetVectorSnapped45( const VECTOR2<T>& aVec, bool only45 = false )
108 {
109  auto newVec = aVec;
110  const VECTOR2<T> absVec { std::abs( aVec.x ), std::abs( aVec.y ) };
111 
112  if ( !only45 && absVec.x > absVec.y * 2 )
113  {
114  // snap along x-axis
115  newVec.y = 0;
116  }
117  else if ( !only45 && absVec.y > absVec.x * 2 )
118  {
119  // snap onto y-axis
120  newVec.x = 0;
121  }
122  else if ( absVec.x > absVec.y )
123  {
124  // snap away from x-axis towards 45
125  newVec.y = std::copysign( aVec.x, aVec.y );
126  } else
127  {
128  // snap away from y-axis towards 45
129  newVec.x = std::copysign( aVec.y, aVec.x );
130  }
131 
132  return newVec;
133 }
134 
135 
149 bool ClipLine( const EDA_RECT *aClipBox, int &x1, int &y1, int &x2, int &y2 );
150 
151 
156 constexpr double dot_mark_len( double aLineWidth )
157 {
158  return std::max( 1.0, aLineWidth );
159 }
160 
161 constexpr double dash_gap_len( double aLineWidth )
162 {
163  return 3.0 * dot_mark_len( aLineWidth ) + ( 2.0 * aLineWidth );
164 }
165 
166 constexpr double dash_mark_len( double aLineWidth )
167 {
168  return std::max( dash_gap_len( aLineWidth ), 5.0 * dot_mark_len( aLineWidth ) );
169 }
170 
171 #endif // #ifndef GEOMETRY_UTILS_H
172 
VECTOR2< T > GetVectorSnapped45(const VECTOR2< T > &aVec, bool only45=false)
Snap a vector onto the nearest 0, 45 or 90 degree line.
int CircleToEndSegmentDeltaRadius(int aInnerCircleRadius, int aSegCount)
Define a general 2D-vector/point.
Definition: vector2d.h:61
bool ClipLine(const EDA_RECT *aClipBox, int &x1, int &y1, int &x2, int &y2)
Test if any part of a line falls within the bounds of a rectangle.
ERROR_LOC
When approximating an arc or circle, should the error be placed on the outside or inside of the curve...
constexpr double dot_mark_len(double aLineWidth)
Dashed and dotted line patterns.
int GetCircleToPolyCorrection(int aMaxError)
constexpr double dash_gap_len(double aLineWidth)
When creating polygons to create a clearance polygonal area, the polygon must be same or bigger than ...
Handle the component boundary box.
Definition: eda_rect.h:42
int GetArcToSegmentCount(int aRadius, int aErrorMax, double aArcAngleDegree)
constexpr double dash_mark_len(double aLineWidth)