class HMdcSizesCellsLayer: public HMdcPlane

 Constructor creates an array of pointers of type HMdcSizesCellsCell

 destructor

 return the size of the pointer array

 alignTrans: coord. system of layer will transformed to "alignTrans" sys.

 return point on the layer plane in wire float number scale!

  calculation the the cell number for the point x,y
  on the wire plane. (x,y - in coor. sys. of layer, z=0)

 HMdcLineParam ln must be in sector coor.system
 return +1 if line path OVER wire in layer(mdc,sector) coor.system
 return -1 if line path UNDER wire in layer(mdc,sector) coor.system
 return 0. if cell<0 or cell>=nCells in layer

 calculation of cells crossed by line x1,y1,z1-x2,y2,z2
 x1,y1,z1, x2,y2,z2 - sector coordinate system

 transformation to coor. sys. of rotated layer from sector sys.

 return the angle alpha (in degree) between projection of linep1-p2
 on the Y-Z plane and Y axis in coor.sys. of wires in degree.
 p1,p2 in coordinate system of sector.

 return the minimal distance from line (p1-p2) to wire.
 p1,p2 are in coordinate system of sector.

 calc. the angle alpha (in degree) between projection of line p1-p2
 on the Y-Z plane and Y axis in coor.sys. of wire (y=z=0) and
 the minimal distance from line (p1-p2) to wire.
 p1,p2 - in sector coor.sys.

 p1l,p2l - in ROTATED LAYER COOR.SYS.!!!
 calc. the angle alpha (in degree) between projection of line p1-p2
 on the Y-Z plane and Y axis in coor.sys. of wire (y=z=0) and
 the minimal distance from line (p1-p2) to wire.

 calc. the angle alpha (in degree) between projection of line
 x1,y1,z1-x2,y2,z2 on the Y-Z plane and Y axis in coor.sys.
 of wires and the minimal distance from line x1,y1,z1-x2,y2,z2
 to wire.
 x1,y1,z1,x2,y2,z2 - in sector coor.sys.

 return kTRUE if line x1,y1,z1-x2,y2,z2 intersect cell or kFALSE
 if not intersect and calc. the angle alpha (in degree) between projection
 of the line  x1,y1,z1-x2,y2,z2 on the Y-Z plane and Y axis in coor.
 sys. of wires and the minimal distance from line x1,y1,z1-x2,y2,z2
 to wire.
 x1,y1,z1,x2,y2,z2 - in sector coor.sys.

 return X position of the signal on the wire in coor. sys. of this wire
 (Ywire=0, Zwire=0), x1,y1,z1 & x2,y2,z2 - track in sector coor.system

 return the path of signal along wire number "cell"
 x1,y1,z1 & x2,y2,z2 - track in sector coor.system
 Path can be <0. or > wire_length !!!
 For GEANT data and don't connected wires return 0.

 return X position of the signal on the wire in coor. sys. of this wire
 (Ywire=0, Zwire=0), "ln" - track in sector coor.system

 return the path of signal along wire number "cell"
 "ln" - track in sector coor.system
 Path can be <0. or > wire_length !!!
 For GEANT data and don't connected wires return 0.

 return the path of signal along wire number "cell"
 x1,y1,z1 & x2,y2,z2 - track in sector coor.system
 For GEANT data and don't connected wires return 0.

 outside:
 if(path<0) outside=-path;
 else if(path>wire_length) outside=path-wire_length;
 else outside=0;

 path-outside give new path which >=0. and <=wire_length)

 ---- esli ponadobitsya, nado proverit' rasschet uglov dlya treka vne cella

 return kTRUE if line p1-p2 intersect cell or kFALSE if not intersect
 calc. the angle driftAlpha (in degree) and drift distance in cell
 from line (p1-p2) to wire.
 p1,p2 - in sector coor.sys.
 1)
    Z^
     |  |------------*----|
     |  | cell        *   |
     |  |            / *  |
     |  |           /90 * |
     |  | driftDist/     *|
     |  |         /       *
   --|--|--------*^-----/-|*--------->
     |  |              /  | *        Y
     |  |      alphaDrDist|  *
        |                 |   *
        |                 |    *
        |-----------------|     * track

 2)             *** 90
    Z^             ***
     |  |----------:--***-|
     |  | cell     :  /  ***
     |  |         :  /    | ***  track
     |  |         : /     |    ***
     |  | driftDist/      |
     |  |        :/       |
   --|--|--------*^-------|---------->
     |  |         |       |          Y
     |  |                 |  alphaDrDist ???
        |                 |
        |                 |
        |-----------------|


 3)                        *
                            *
    Z^                     / * <-- no eg. 90 deg. !
     |  |-----------------/   *
     |  | cell           /|    *
     |  |               / |     *
     |  |              /  |      *
     |  |   driftDist /   |       *
     |  |            /    |        *track
     |  |           /     |         *
     |  |          /      |          *
     |  |         /       |      Alpha*
   --|--|--------*^-------|------------->
     |  |         |       |          Y
     |  |      alphaDrDist|
        |                 |
        |                 |
        |                 |
        |                 |
        |                 |
        |                 |
        |-----------------|

 if "ln"  is in another sector coor.sys

Inlines

 transform. point x,y,z from layer coor.sys. to sector coor.sys.

 Return Y in rot.layer coor.sys.

 calc.  the minimal distance from line x1,y1,z1-x2,y2,z2  to wire.
 x1,y1,z1,x2,y2,z2 - in sector coor.sys.

 Output: yw,zw - in wire coor.sys.
 Wire coor.sys. is line y=z=0, Y - along layer
 x,y,z - in sector coor.sys.

 calc. the minimal distance from line (y1,z1) - (y2,z2)  to poin
 y=z=0 in plane y-z.

 calc. the angle alpha (in degree) between line (y1,z1) - (y2,z2)
 in Y-Z plane and Y axis and the minimal distance from this line
 to poin y=z=0 in plane y-z.

 Input:  xi,yi,zi - sector coor.sys.
 Output: xo,yo,zo - layer coor.sys.

 Input:  xi,yi,zi - sector coor.sys.
 Output: xo,yo,zo - rotated layer coor.sys.

 Input:  xi,yi,zi - sector coor.sys.
 Output: yo,zo - rotated layer coor.sys.

 Input:  xi,yi,zi - sector coor.sys.
 Output: yo,zo - rotated layer coor.sys.

 Input:  xi,yi,zi - sector coor.sys.
 Output: yo,zo - rotated layer coor.sys.

 Input:  xi,yi - layer coor.sys.
 Return X in  rotated layer coor.sys.

 Input:  xi,yi - layer coor.sys.
 Return Y in  rotated layer coor.sys.

 Input:  xi,yi - layer coor.sys.
 Return X,Y in  rotated layer coor.sys.

 calc. the angle alpha (in degree) between projection of line
 "ln" on the Y-Z plane and Y axis in coor.sys.
 of wires and the minimal distance from "ln" to wire.
 "ln" - in sector coor.sys.

 calc. the angle alpha (in degree) between projection of line
 "ln" on the Y-Z plane and Y axis in coor.sys.
 of wires and the minimal distance from "ln" to wire.
 "ln" - in sector coor.sys.

 return kTRUE if line x1,y1,z1-x2,y2,z2 intersect cell or kFALSE
 if not intersect and calc. the angle alpha (in degree) between projection
 of the line  x1,y1,z1-x2,y2,z2 on the Y-Z plane and Y axis in coor.
 sys. of wires and the minimal distance from line x1,y1,z1-x2,y2,z2
 to wire.
 x1,y1,z1,x2,y2,z2 - in sector coor.sys.

 return kTRUE if line x1,y1,z1-x2,y2,z2 intersect cell or kFALSE
 if not intersect and calc. the angle alpha (in degree) between projection
 of the line  x1,y1,z1-x2,y2,z2 on the Y-Z plane and Y axis in coor.
 sys. of wires and the minimal distance from line x1,y1,z1-x2,y2,z2
 to wire.
 x1,y1,z1,x2,y2,z2 - in sector coor.sys.

 Next method are intrested for geant data only, because plane of
 HMdcGeant hits is entrance plane of sensitive wires volume!