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Class jschem.connectionList

java.lang.Object
   |
   +----jschem.connectionList

public class connectionList

extends Object

It sets up the datastructures for keeping segment-wise the wires of the schematic including the graphical information.
The segments are always drawn in the horizontal direction first, then in vertical direction. On the both ends knots are added.

Examples:

"x1/y1 o----+ x2/y2 o x2/y2 o"
" | | x1/y1 o----o x2/y2 |"
" x2/y2 o +----o x1/y1 x1/y1 o"


connectionList(int, int, int)

Build new connectivity list for a schematic.

add(int, int, int, int)

Adds a new segment.

checkJoinNet(int, int, int, int)

Checks if given path joins to the existing wires.

deleteSelection()

Delete a selection

fromString(String)

Setup connectivity list from GRAPHICS line.

getNetAt(int, int)

Checks if given coordinate hits an existing wire.

paint(Graphics)

Can be called to allow the connections to draw them themselves.

selectFullNetAt(int, int)

Select a whole net at a given coordinate

selectNetAt(int, int)

Select a net segment at a given coordinate

toString()

Creates GRAPHICS line.

 public connectionList(int gr,
                       int size,
                       int subsize)

Build new connectivity list for a schematic.

Parameters:

gr - gridsize in pixel

size - amount of nets

subsize - allowed amount of segments per net

 public String add(int x1,
                   int y1,
                   int x2,
                   int y2)

Adds a new segment. It is joined to an existing net if:

• the start/end point of this segment hits any other segment path
• the start/endpoints of other segments hit this segment path

It may happen that two or more existing nets are connected together, the first one which is found is reference for every other found.

Parameters:

x1,y1 - the given start coordinates (pixel)

x2,y2 - the given end coordinates (pixel)

Returns:

name of the net created or joined

 public int[] checkJoinNet(int x1,
                           int y1,
                           int x2,
                           int y2)

Checks if given path joins to the existing wires. It checks if:

• the start/end point of this segment hits any other segment path
• the start/endpoints of other segments hit this segment path

We suppose not to have more than 20 matches....

Parameters:

x1,y1 - the given start coordinate (pixel)

x2,y2 - the given end coordinate (pixel)

Returns:

indices of the nets to join (idx=0 is # of hits)

 public String getNetAt(int x,
                        int y)

Checks if given coordinate hits an existing wire.

Parameters:

x,y - the given coordinate (pixel)

Returns:

net name (or null if not hit)

 public String selectNetAt(int x,
                           int y)

Select a net segment at a given coordinate

Parameters:

x,y - the given coordinate (pixel)

Returns:

net name (or null if not hit)

 public String selectFullNetAt(int x,
                               int y)

Select a whole net at a given coordinate

Parameters:

x,y - the given coordinate (pixel)

Returns:

net name (or null if not hit)

 public void deleteSelection()

Delete a selection

Parameters:

x,y - the given coordinate (pixel)

Returns:

net name (or null if not hit)

 public String toString()

Creates GRAPHICS line.

Overrides:

toString in class Object

 public boolean fromString(String s)

Setup connectivity list from GRAPHICS line.

 public void paint(Graphics g)

Can be called to allow the connections to draw them themselves. It draws the lines in blue, with knots at every segment end.

Parameters:

g - Graphics context to draw to

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