set eol-style native on new files

polygon/PolyLine2Kicad.h

-// PolyLine.h ... definition of CPolyLine class
-//
-// A polyline contains one or more contours, where each contour
-// is defined by a list of corners and side-styles
-// There may be multiple contours in a polyline.
-// The last contour may be open or closed, any others must be closed.
-// All of the corners and side-styles are concatenated into 2 arrays,
-// separated by setting the end_contour flag of the last corner of 
-// each contour.
-//
-// When used for copper areas, the first contour is the outer edge 
-// of the area, subsequent ones are "holes" in the copper.
-//
-// If a CDisplayList pointer is provided, the polyline can draw itself 
-
-#ifndef POLYLINE2KICAD_H
-#define POLYLINE2KICAD_H
-
-#define PCBU_PER_MIL 10
-#define MAX_LAYERS 32
-#define NM_PER_MIL 10 // 25400
-// pad shapes
-enum
-{
-	PAD_NONE = 0,
-	PAD_ROUND,
-	PAD_SQUARE,
-	PAD_RECT,
-	PAD_RRECT,
-	PAD_OVAL,
-	PAD_OCTAGON
-};
-
-/*
-enum
-{
-	// visible layers
-	LAY_SELECTION = 0,
-	LAY_BACKGND,
-	LAY_VISIBLE_GRID,
-	LAY_HILITE,
-	LAY_DRC_ERROR,
-	LAY_BOARD_OUTLINE,
-	LAY_RAT_LINE,
-	LAY_SILK_TOP,
-	LAY_SILK_BOTTOM,
-	LAY_SM_TOP,
-	LAY_SM_BOTTOM,
-	LAY_PAD_THRU,
-	LAY_TOP_COPPER,
-	LAY_BOTTOM_COPPER,
-	// invisible layers
-	LAY_MASK_TOP = -100,
-	LAY_MASK_BOTTOM = -101,
-	LAY_PASTE_TOP = -102,
-	LAY_PASTE_BOTTOM = -103
-};
-*/
-
-#define LAY_SELECTION  0
-#define LAY_TOP_COPPER 0
-
-#define CDC wxDC
-class wxDC;
-
-#if 0
-class dl_element;
-class CDisplayList {
-public:
-	void Set_visible(void*, int) {};
-	int Get_x(void) { return 0;};
-	int Get_y(void) { return 0;};
-	void StopDragging(void) {};
-	void CancelHighLight(void) {};
-	void StartDraggingLineVertex(...) {};
-	void Add() {};
-};
-#endif
-
-
-class CRect {
-public:
-	int left, right, top, bottom;
-};
-
-class CPoint {
-public:
-	int x, y;
-public:
-	CPoint(void) { x = y = 0;};
-	CPoint(int i, int j) { x = i; y = j;};
-};
-
-#endif	// #ifndef POLYLINE2KICAD_H
+// PolyLine.h ... definition of CPolyLine class
+//
+// A polyline contains one or more contours, where each contour
+// is defined by a list of corners and side-styles
+// There may be multiple contours in a polyline.
+// The last contour may be open or closed, any others must be closed.
+// All of the corners and side-styles are concatenated into 2 arrays,
+// separated by setting the end_contour flag of the last corner of 
+// each contour.
+//
+// When used for copper areas, the first contour is the outer edge 
+// of the area, subsequent ones are "holes" in the copper.
+//
+// If a CDisplayList pointer is provided, the polyline can draw itself 
+
+#ifndef POLYLINE2KICAD_H
+#define POLYLINE2KICAD_H
+
+#define PCBU_PER_MIL 10
+#define MAX_LAYERS 32
+#define NM_PER_MIL 10 // 25400
+// pad shapes
+enum
+{
+	PAD_NONE = 0,
+	PAD_ROUND,
+	PAD_SQUARE,
+	PAD_RECT,
+	PAD_RRECT,
+	PAD_OVAL,
+	PAD_OCTAGON
+};
+
+/*
+enum
+{
+	// visible layers
+	LAY_SELECTION = 0,
+	LAY_BACKGND,
+	LAY_VISIBLE_GRID,
+	LAY_HILITE,
+	LAY_DRC_ERROR,
+	LAY_BOARD_OUTLINE,
+	LAY_RAT_LINE,
+	LAY_SILK_TOP,
+	LAY_SILK_BOTTOM,
+	LAY_SM_TOP,
+	LAY_SM_BOTTOM,
+	LAY_PAD_THRU,
+	LAY_TOP_COPPER,
+	LAY_BOTTOM_COPPER,
+	// invisible layers
+	LAY_MASK_TOP = -100,
+	LAY_MASK_BOTTOM = -101,
+	LAY_PASTE_TOP = -102,
+	LAY_PASTE_BOTTOM = -103
+};
+*/
+
+#define LAY_SELECTION  0
+#define LAY_TOP_COPPER 0
+
+#define CDC wxDC
+class wxDC;
+
+#if 0
+class dl_element;
+class CDisplayList {
+public:
+	void Set_visible(void*, int) {};
+	int Get_x(void) { return 0;};
+	int Get_y(void) { return 0;};
+	void StopDragging(void) {};
+	void CancelHighLight(void) {};
+	void StartDraggingLineVertex(...) {};
+	void Add() {};
+};
+#endif
+
+
+class CRect {
+public:
+	int left, right, top, bottom;
+};
+
+class CPoint {
+public:
+	int x, y;
+public:
+	CPoint(void) { x = y = 0;};
+	CPoint(int i, int j) { x = i; y = j;};
+};
+
+#endif	// #ifndef POLYLINE2KICAD_H

polygon/cdisplaylist_stuff.cpp

-/* stuff for class CDisplayList */
-
-#include "PolyLine.h"
-
-dl_element * CDisplayList::Add( id id, void * ptr, int glayer, int gtype, int visible,
-						int w, int holew, int x, int y, int xf, int yf, int xo, int yo, 
-						int radius, int orig_layer )
-{
-	return NULL;
-}
-
-dl_element * CDisplayList::AddSelector( id id, void * ptr, int glayer, int gtype, int visible,
-						int w, int holew, int x, int y, int xf, int yf, int xo, int yo, int radius )
-{
-	return NULL;
-}
-
-
-void CDisplayList::Set_visible( dl_element * el, int visible )
-{
-}
-
-
-int CDisplayList::StopDragging()
-{
-	return 0;
-}
-
-int CDisplayList::CancelHighLight()
-{
-	return 0;
-}
-
-void CDisplayList::Set_id( dl_element * el, id * id )
-{
-}
-
-id CDisplayList::Remove( dl_element * element )
-{
-	return 0;
-}
-
-int CDisplayList::Get_w( dl_element * el )
-{
-	return 0;
-}
-
-int CDisplayList::Get_x( dl_element * el )
-{
-	return 0;
-}
-int CDisplayList::Get_y( dl_element * el )
-{
-	return 0;
-}
-
-int CDisplayList::Get_xf( dl_element * el )
-{
-	return 0;
-}
-int CDisplayList::Get_yf( dl_element * el )
-{
-	return 0;
-}
-
-int CDisplayList::HighLight( int gtype, int x, int y, int xf, int yf, int w, int orig_layer )
-{
-	return 0;
-}
-
-int CDisplayList::StartDraggingLineVertex( CDC * pDC, int x, int y, int xi, int yi,
-								int xf, int yf,
-								int layer1, int layer2, int w1, int w2,
-								int style1, int style2,
-								int layer_no_via, int via_w, int via_holew, int dir,
-								int crosshair )
-{
-	return 0;
-}
-
-int CDisplayList::StartDraggingArc( CDC * pDC, int style, int x, int y, int xi, int yi, 
-								int layer, int w, int crosshair )
-{
-	return 0;
-}
+/* stuff for class CDisplayList */
+
+#include "PolyLine.h"
+
+dl_element * CDisplayList::Add( id id, void * ptr, int glayer, int gtype, int visible,
+						int w, int holew, int x, int y, int xf, int yf, int xo, int yo, 
+						int radius, int orig_layer )
+{
+	return NULL;
+}
+
+dl_element * CDisplayList::AddSelector( id id, void * ptr, int glayer, int gtype, int visible,
+						int w, int holew, int x, int y, int xf, int yf, int xo, int yo, int radius )
+{
+	return NULL;
+}
+
+
+void CDisplayList::Set_visible( dl_element * el, int visible )
+{
+}
+
+
+int CDisplayList::StopDragging()
+{
+	return 0;
+}
+
+int CDisplayList::CancelHighLight()
+{
+	return 0;
+}
+
+void CDisplayList::Set_id( dl_element * el, id * id )
+{
+}
+
+id CDisplayList::Remove( dl_element * element )
+{
+	return 0;
+}
+
+int CDisplayList::Get_w( dl_element * el )
+{
+	return 0;
+}
+
+int CDisplayList::Get_x( dl_element * el )
+{
+	return 0;
+}
+int CDisplayList::Get_y( dl_element * el )
+{
+	return 0;
+}
+
+int CDisplayList::Get_xf( dl_element * el )
+{
+	return 0;
+}
+int CDisplayList::Get_yf( dl_element * el )
+{
+	return 0;
+}
+
+int CDisplayList::HighLight( int gtype, int x, int y, int xf, int yf, int w, int orig_layer )
+{
+	return 0;
+}
+
+int CDisplayList::StartDraggingLineVertex( CDC * pDC, int x, int y, int xi, int yi,
+								int xf, int yf,
+								int layer1, int layer2, int w1, int w2,
+								int style1, int style2,
+								int layer_no_via, int via_w, int via_holew, int dir,
+								int crosshair )
+{
+	return 0;
+}
+
+int CDisplayList::StartDraggingArc( CDC * pDC, int style, int x, int y, int xi, int yi, 
+								int layer, int w, int crosshair )
+{
+	return 0;
+}

polygon/freepcb_ids.h

-// definition of ID structure used by FreePCB
-//
-#pragma once
-
-// struct id : this structure is used to identify PCB design elements
-// such as instances of parts or nets, and their subelements
-// Each element will have its own id.
-// An id is attached to each item of the Display List so that it can
-// be linked back to the PCB design element which drew it.
-// These are mainly used to identify items selected by clicking the mouse
-//
-// In general: 
-//		id.type	= type of PCB element (e.g. part, net, text)
-//		id.st	= subelement type (e.g. part pad, net connection)
-//		id.i	= subelement index (zero-based)
-//		id.sst	= subelement of subelement (e.g. net connection segment)
-//		id.ii	= subsubelement index (zero-based)
-//
-// For example, the id for segment 0 of connection 4 of net 12 would be
-//	id = { ID_NET, 12, ID_CONNECT, 4, ID_SEG, 0 };
-//
-//
-class id {
-public:
-	// constructor
-	id( int qt=0, int qst=0, int qis=0, int qsst=0, int qiis=0 ) 
-	{ type=qt; st=qst; i=qis; sst=qsst; ii=qiis; } 
-	// operators
-	friend int operator ==(id id1, id id2)
-	{ return (id1.type==id2.type 
-			&& id1.st==id2.st 
-			&& id1.sst==id2.sst 
-			&& id1.i==id2.i 
-			&& id1.ii==id2.ii ); 
-	}
-	// member functions
-	void Clear() 
-	{ type=0; st=0; i=0; sst=0; ii=0; } 
-	void Set( int qt, int qst=0, int qis=0, int qsst=0, int qiis=0 ) 
-	{ type=qt; st=qst; i=qis; sst=qsst; ii=qiis; } 
-	// member variables
-	unsigned int type;	// type of element
-	unsigned int st;	// type of subelement
-	unsigned int i;		// index of subelement
-	unsigned int sst;	// type of subsubelement
-	unsigned int ii;	// index of subsubelement
-};
-
-
-// these are constants used in ids
-// root types
-enum {
-	ID_NONE = 0,	// an undefined type or st (or an error)
-	ID_BOARD,		// board outline
-	ID_PART,		// part
-	ID_NET,			// net
-	ID_TEXT,		// free-standing text
-	ID_DRC,			// DRC error
-	ID_SM_CUTOUT,	// cutout for solder mask
-	ID_MULTI		// if multiple selections
-};
-
-// subtypes of ID_PART
-enum {
-	ID_PAD = 1,		// pad_stack in a part
-	ID_SEL_PAD,		// selection rectangle for pad_stack in a part
-	ID_OUTLINE,		// part outline
-	ID_REF_TXT,		// text showing ref num for part
-	ID_ORIG,		// part origin
-	ID_SEL_RECT,	// selection rectangle for part
-	ID_SEL_REF_TXT	// selection rectangle for ref text
-};
-
-// subtypes of ID_TEXT
-enum {
-	ID_SEL_TXT = 1,		// selection rectangle
-	ID_STROKE			// stroke for text
-};
-
-// subtypes of ID_NET
-enum {
-	ID_ENTIRE_NET = 0,
-	ID_CONNECT,		// connection
-	ID_AREA			// copper area
-};
-
-// subtypes of ID_BOARD
-enum {
-	ID_BOARD_OUTLINE = 1,
-};
-
-// subsubtypes of ID_NET.ID_CONNECT
-enum {
-	ID_ENTIRE_CONNECT = 0,
-	ID_SEG,
-	ID_SEL_SEG,	
-	ID_VERTEX,	
-	ID_SEL_VERTEX,
-	ID_VIA
-};
-
-// subsubtypes of ID_NET.ID_AREA, ID_BOARD.ID_BOARD_OUTLINE, ID_SM_CUTOUT
-enum {
-	ID_SIDE = 1,
-	ID_SEL_SIDE,
-	ID_SEL_CORNER,
-	ID_HATCH,
-	ID_PIN_X,	// only used by ID_AREA
-	ID_STUB_X	// only used by ID_AREA
-};
-
-// subtypes of ID_DRC
-// for subsubtypes, use types in DesignRules.h
-enum {
-	ID_DRE = 1,
-	ID_SEL_DRE
-};
-
+// definition of ID structure used by FreePCB
+//
+#pragma once
+
+// struct id : this structure is used to identify PCB design elements
+// such as instances of parts or nets, and their subelements
+// Each element will have its own id.
+// An id is attached to each item of the Display List so that it can
+// be linked back to the PCB design element which drew it.
+// These are mainly used to identify items selected by clicking the mouse
+//
+// In general: 
+//		id.type	= type of PCB element (e.g. part, net, text)
+//		id.st	= subelement type (e.g. part pad, net connection)
+//		id.i	= subelement index (zero-based)
+//		id.sst	= subelement of subelement (e.g. net connection segment)
+//		id.ii	= subsubelement index (zero-based)
+//
+// For example, the id for segment 0 of connection 4 of net 12 would be
+//	id = { ID_NET, 12, ID_CONNECT, 4, ID_SEG, 0 };
+//
+//
+class id {
+public:
+	// constructor
+	id( int qt=0, int qst=0, int qis=0, int qsst=0, int qiis=0 ) 
+	{ type=qt; st=qst; i=qis; sst=qsst; ii=qiis; } 
+	// operators
+	friend int operator ==(id id1, id id2)
+	{ return (id1.type==id2.type 
+			&& id1.st==id2.st 
+			&& id1.sst==id2.sst 
+			&& id1.i==id2.i 
+			&& id1.ii==id2.ii ); 
+	}
+	// member functions
+	void Clear() 
+	{ type=0; st=0; i=0; sst=0; ii=0; } 
+	void Set( int qt, int qst=0, int qis=0, int qsst=0, int qiis=0 ) 
+	{ type=qt; st=qst; i=qis; sst=qsst; ii=qiis; } 
+	// member variables
+	unsigned int type;	// type of element
+	unsigned int st;	// type of subelement
+	unsigned int i;		// index of subelement
+	unsigned int sst;	// type of subsubelement
+	unsigned int ii;	// index of subsubelement
+};
+
+
+// these are constants used in ids
+// root types
+enum {
+	ID_NONE = 0,	// an undefined type or st (or an error)
+	ID_BOARD,		// board outline
+	ID_PART,		// part
+	ID_NET,			// net
+	ID_TEXT,		// free-standing text
+	ID_DRC,			// DRC error
+	ID_SM_CUTOUT,	// cutout for solder mask
+	ID_MULTI		// if multiple selections
+};
+
+// subtypes of ID_PART
+enum {
+	ID_PAD = 1,		// pad_stack in a part
+	ID_SEL_PAD,		// selection rectangle for pad_stack in a part
+	ID_OUTLINE,		// part outline
+	ID_REF_TXT,		// text showing ref num for part
+	ID_ORIG,		// part origin
+	ID_SEL_RECT,	// selection rectangle for part
+	ID_SEL_REF_TXT	// selection rectangle for ref text
+};
+
+// subtypes of ID_TEXT
+enum {
+	ID_SEL_TXT = 1,		// selection rectangle
+	ID_STROKE			// stroke for text
+};
+
+// subtypes of ID_NET
+enum {
+	ID_ENTIRE_NET = 0,
+	ID_CONNECT,		// connection
+	ID_AREA			// copper area
+};
+
+// subtypes of ID_BOARD
+enum {
+	ID_BOARD_OUTLINE = 1,
+};
+
+// subsubtypes of ID_NET.ID_CONNECT
+enum {
+	ID_ENTIRE_CONNECT = 0,
+	ID_SEG,
+	ID_SEL_SEG,	
+	ID_VERTEX,	
+	ID_SEL_VERTEX,
+	ID_VIA
+};
+
+// subsubtypes of ID_NET.ID_AREA, ID_BOARD.ID_BOARD_OUTLINE, ID_SM_CUTOUT
+enum {
+	ID_SIDE = 1,
+	ID_SEL_SIDE,
+	ID_SEL_CORNER,
+	ID_HATCH,
+	ID_PIN_X,	// only used by ID_AREA
+	ID_STUB_X	// only used by ID_AREA
+};
+
+// subtypes of ID_DRC
+// for subsubtypes, use types in DesignRules.h
+enum {
+	ID_DRE = 1,
+	ID_SEL_DRE
+};
+

polygon/math_for_graphics.h

-// math stuff for graphics, from FreePCB
-
-typedef struct PointTag
-{
-	double X,Y;
-} Point;
-
-typedef struct EllipseTag
-{
-	Point Center;			/* ellipse center	 */
-//	double MaxRad,MinRad;	 /* major and minor axis */
-//	double Phi;				/* major axis rotation  */
-	double xrad, yrad;		// radii on x and y
-	double theta1, theta2;	// start and end angle for arc 
-} EllipseKH;
-
-const CPoint zero(0,0);
-
-class my_circle {
-public:
-	my_circle(){};
-	my_circle( int xx, int yy, int rr )
-	{
-		x = xx;
-		y = yy;
-		r = rr;
-	};
-	int x, y, r; 
-};
-
-class my_rect {
-public:
-	my_rect(){};
-	my_rect( int xi, int yi, int xf, int yf )
-	{
-		xlo = min(xi,xf);
-		xhi = max(xi,xf);
-		ylo = min(yi,yf);
-		yhi = max(yi,yf);
-	};
-	int xlo, ylo, xhi, yhi; 
-};
-
-class my_seg { 
-public:
-	my_seg(){};
-	my_seg( int xxi, int yyi, int xxf, int yyf )
-	{
-		xi = xxi;
-		yi = yyi;
-		xf = xxf;
-		yf = yyf;
-	};
-	int xi, yi, xf, yf; 
-};
-
-// math stuff for graphics
-BOOL Quadratic( double a, double b, double c, double *x1, double *x2 );
-void DrawArc( CDC * pDC, int shape, int xxi, int yyi, int xxf, int yyf, BOOL bMeta=FALSE );
-void RotatePoint( CPoint *p, int angle, CPoint org );
-void RotateRect( CRect *r, int angle, CPoint org );
-int TestLineHit( int xi, int yi, int xf, int yf, int x, int y, double dist );
-int FindLineIntersection( double a, double b, double c, double d, double * x, double * y );
-int FindLineSegmentIntersection( double a, double b, int xi, int yi, int xf, int yf, int style, 
-				double * x1, double * y1, double * x2, double * y2, double * dist=NULL );
-int FindSegmentIntersections( int xi, int yi, int xf, int yf, int style, 
-								 int xi2, int yi2, int xf2, int yf2, int style2,
-								 double x[]=NULL, double y[]=NULL );
-BOOL FindLineEllipseIntersections( double a, double b, double c, double d, double *x1, double *x2 );
-BOOL FindVerticalLineEllipseIntersections( double a, double b, double x, double *y1, double *y2 );
-BOOL TestForIntersectionOfStraightLineSegments( int x1i, int y1i, int x1f, int y1f, 
-									   int x2i, int y2i, int x2f, int y2f,
-									   int * x=NULL, int * y=NULL, double * dist=NULL );
-void GetPadElements( int type, int x, int y, int wid, int len, int radius, int angle,
-					int * nr, my_rect r[], int * nc, my_circle c[], int * ns, my_seg s[] );
-int GetClearanceBetweenPads( int type1, int x1, int y1, int w1, int l1, int r1, int angle1,
-							 int type2, int x2, int y2, int w2, int l2, int r2, int angle2 );
-int GetClearanceBetweenSegmentAndPad( int x1, int y1, int x2, int y2, int w,
-								  int type, int x, int y, int wid, int len, 
-								  int radius, int angle );
-int GetClearanceBetweenSegments( int x1i, int y1i, int x1f, int y1f, int style1, int w1,
-								   int x2i, int y2i, int x2f, int y2f, int style2, int w2,
-								   int max_cl, int * x, int * y );
-
-/** Function GetPointToLineSegmentDistance
- * Get distance between line segment and point
- * @param x,y = point
- * @param	xi,yi and xf,yf = the end-points of the line segment
- * @return the distance
- */
-double GetPointToLineSegmentDistance( int x, int y, int xi, int yi, int xf, int yf );
-
-double GetPointToLineDistance( double a, double b, int x, int y, double * xp=NULL, double * yp=NULL );
-BOOL InRange( double x, double xi, double xf );
-double Distance( int x1, int y1, int x2, int y2 );
-int GetArcIntersections( EllipseKH * el1, EllipseKH * el2, 
-						double * x1=NULL, double * y1=NULL, 
-						double * x2=NULL, double * y2=NULL );						
-CPoint GetInflectionPoint( CPoint pi, CPoint pf, int mode );
-
-// quicksort (2-way or 3-way)
-void quickSort(int numbers[], int index[], int array_size);
-void q_sort(int numbers[], int index[], int left, int right);
-void q_sort_3way( int a[], int b[], int left, int right );
+// math stuff for graphics, from FreePCB
+
+typedef struct PointTag
+{
+	double X,Y;
+} Point;
+
+typedef struct EllipseTag
+{
+	Point Center;			/* ellipse center	 */
+//	double MaxRad,MinRad;	 /* major and minor axis */
+//	double Phi;				/* major axis rotation  */
+	double xrad, yrad;		// radii on x and y
+	double theta1, theta2;	// start and end angle for arc 
+} EllipseKH;
+
+const CPoint zero(0,0);
+
+class my_circle {
+public:
+	my_circle(){};
+	my_circle( int xx, int yy, int rr )
+	{
+		x = xx;
+		y = yy;
+		r = rr;
+	};
+	int x, y, r; 
+};
+
+class my_rect {
+public:
+	my_rect(){};
+	my_rect( int xi, int yi, int xf, int yf )
+	{
+		xlo = min(xi,xf);
+		xhi = max(xi,xf);
+		ylo = min(yi,yf);
+		yhi = max(yi,yf);
+	};
+	int xlo, ylo, xhi, yhi; 
+};
+
+class my_seg { 
+public:
+	my_seg(){};
+	my_seg( int xxi, int yyi, int xxf, int yyf )
+	{
+		xi = xxi;
+		yi = yyi;
+		xf = xxf;
+		yf = yyf;
+	};
+	int xi, yi, xf, yf; 
+};
+
+// math stuff for graphics
+BOOL Quadratic( double a, double b, double c, double *x1, double *x2 );
+void DrawArc( CDC * pDC, int shape, int xxi, int yyi, int xxf, int yyf, BOOL bMeta=FALSE );
+void RotatePoint( CPoint *p, int angle, CPoint org );
+void RotateRect( CRect *r, int angle, CPoint org );
+int TestLineHit( int xi, int yi, int xf, int yf, int x, int y, double dist );
+int FindLineIntersection( double a, double b, double c, double d, double * x, double * y );
+int FindLineSegmentIntersection( double a, double b, int xi, int yi, int xf, int yf, int style, 
+				double * x1, double * y1, double * x2, double * y2, double * dist=NULL );
+int FindSegmentIntersections( int xi, int yi, int xf, int yf, int style, 
+								 int xi2, int yi2, int xf2, int yf2, int style2,
+								 double x[]=NULL, double y[]=NULL );
+BOOL FindLineEllipseIntersections( double a, double b, double c, double d, double *x1, double *x2 );
+BOOL FindVerticalLineEllipseIntersections( double a, double b, double x, double *y1, double *y2 );
+BOOL TestForIntersectionOfStraightLineSegments( int x1i, int y1i, int x1f, int y1f, 
+									   int x2i, int y2i, int x2f, int y2f,
+									   int * x=NULL, int * y=NULL, double * dist=NULL );
+void GetPadElements( int type, int x, int y, int wid, int len, int radius, int angle,
+					int * nr, my_rect r[], int * nc, my_circle c[], int * ns, my_seg s[] );
+int GetClearanceBetweenPads( int type1, int x1, int y1, int w1, int l1, int r1, int angle1,
+							 int type2, int x2, int y2, int w2, int l2, int r2, int angle2 );
+int GetClearanceBetweenSegmentAndPad( int x1, int y1, int x2, int y2, int w,
+								  int type, int x, int y, int wid, int len, 
+								  int radius, int angle );
+int GetClearanceBetweenSegments( int x1i, int y1i, int x1f, int y1f, int style1, int w1,
+								   int x2i, int y2i, int x2f, int y2f, int style2, int w2,
+								   int max_cl, int * x, int * y );
+
+/** Function GetPointToLineSegmentDistance
+ * Get distance between line segment and point
+ * @param x,y = point
+ * @param	xi,yi and xf,yf = the end-points of the line segment
+ * @return the distance
+ */
+double GetPointToLineSegmentDistance( int x, int y, int xi, int yi, int xf, int yf );
+
+double GetPointToLineDistance( double a, double b, int x, int y, double * xp=NULL, double * yp=NULL );
+BOOL InRange( double x, double xi, double xf );
+double Distance( int x1, int y1, int x2, int y2 );
+int GetArcIntersections( EllipseKH * el1, EllipseKH * el2, 
+						double * x1=NULL, double * y1=NULL, 
+						double * x2=NULL, double * y2=NULL );						
+CPoint GetInflectionPoint( CPoint pi, CPoint pf, int mode );
+
+// quicksort (2-way or 3-way)
+void quickSort(int numbers[], int index[], int array_size);
+void q_sort(int numbers[], int index[], int left, int right);
+void q_sort_3way( int a[], int b[], int left, int right );