109 lines
3.5 KiB
C++
109 lines
3.5 KiB
C++
// math stuff for graphics, from FreePCB
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#ifndef abs
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#define abs(x) (((x) >=0) ? (x) : (-(x)))
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#endif
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typedef struct PointTag
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{
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double X,Y;
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} PointT;
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typedef struct EllipseTag
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{
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PointT Center; /* ellipse center */
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// double MaxRad,MinRad; /* major and minor axis */
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// double Phi; /* major axis rotation */
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double xrad, yrad; // radii on x and y
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double theta1, theta2; // start and end angle for arc
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} EllipseKH;
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const CPoint zero(0,0);
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class my_circle {
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public:
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my_circle(){};
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my_circle( int xx, int yy, int rr )
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{
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x = xx;
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y = yy;
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r = rr;
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};
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int x, y, r;
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};
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class my_rect {
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public:
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my_rect(){};
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my_rect( int xi, int yi, int xf, int yf )
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{
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xlo = min(xi,xf);
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xhi = max(xi,xf);
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ylo = min(yi,yf);
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yhi = max(yi,yf);
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};
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int xlo, ylo, xhi, yhi;
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};
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class my_seg {
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public:
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my_seg(){};
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my_seg( int xxi, int yyi, int xxf, int yyf )
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{
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xi = xxi;
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yi = yyi;
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xf = xxf;
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yf = yyf;
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};
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int xi, yi, xf, yf;
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};
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// math stuff for graphics
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#if 0
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void DrawArc( CDC * pDC, int shape, int xxi, int yyi, int xxf, int yyf, bool bMeta=FALSE );
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#endif
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bool Quadratic( double a, double b, double c, double *x1, double *x2 );
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void RotatePoint( CPoint *p, int angle, CPoint org );
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void RotateRect( CRect *r, int angle, CPoint org );
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int TestLineHit( int xi, int yi, int xf, int yf, int x, int y, double dist );
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int FindLineIntersection( double a, double b, double c, double d, double * x, double * y );
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int FindLineSegmentIntersection( double a, double b, int xi, int yi, int xf, int yf, int style,
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double * x1, double * y1, double * x2, double * y2, double * dist=NULL );
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int FindSegmentIntersections( int xi, int yi, int xf, int yf, int style,
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int xi2, int yi2, int xf2, int yf2, int style2,
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double x[]=NULL, double y[]=NULL );
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bool FindLineEllipseIntersections( double a, double b, double c, double d, double *x1, double *x2 );
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bool FindVerticalLineEllipseIntersections( double a, double b, double x, double *y1, double *y2 );
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bool TestForIntersectionOfStraightLineSegments( int x1i, int y1i, int x1f, int y1f,
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int x2i, int y2i, int x2f, int y2f,
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int * x=NULL, int * y=NULL, double * dist=NULL );
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void GetPadElements( int type, int x, int y, int wid, int len, int radius, int angle,
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int * nr, my_rect r[], int * nc, my_circle c[], int * ns, my_seg s[] );
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int GetClearanceBetweenPads( int type1, int x1, int y1, int w1, int l1, int r1, int angle1,
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int type2, int x2, int y2, int w2, int l2, int r2, int angle2 );
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int GetClearanceBetweenSegmentAndPad( int x1, int y1, int x2, int y2, int w,
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int type, int x, int y, int wid, int len,
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int radius, int angle );
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int GetClearanceBetweenSegments( int x1i, int y1i, int x1f, int y1f, int style1, int w1,
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int x2i, int y2i, int x2f, int y2f, int style2, int w2,
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int max_cl, int * x, int * y );
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/** Function GetPointToLineSegmentDistance
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* Get distance between line segment and point
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* @param x,y = point
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* @param xi,yi and xf,yf = the end-points of the line segment
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* @return the distance
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*/
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double GetPointToLineSegmentDistance( int x, int y, int xi, int yi, int xf, int yf );
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double GetPointToLineDistance( double a, double b, int x, int y, double * xp=NULL, double * yp=NULL );
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bool InRange( double x, double xi, double xf );
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double Distance( int x1, int y1, int x2, int y2 );
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int GetArcIntersections( EllipseKH * el1, EllipseKH * el2,
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double * x1=NULL, double * y1=NULL,
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double * x2=NULL, double * y2=NULL );
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CPoint GetInflectionPoint( CPoint pi, CPoint pf, int mode );
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