# MidLineToMidLine

Computes the distance from the midpoint of one line segment to the midpoint of a second line segment.

Inputs

Parameter | Description
Image | This argument must reference a spreadsheet cell that contains a valid Image data structure. By default, the cell referenced is cell A0, containing the AcquireImage function.
Line 0 | Specifies the coordinates of the first line segment.
X 0 | The X coordinate of the first endpoint of the first line.
Y 0 | The Y coordinate of the first endpoint of the first line.
X 1 | The X coordinate of the second endpoint of the first line.
Y 1 | The Y coordinate of the second endpoint of the first line.
Line 1 | Specifies the coordinates of the second line segment.
X 0 | The X coordinate of the first endpoint of the second line.
Y 0 | The Y coordinate of the first endpoint of the second line.
X 1 | The X coordinate of the second endpoint of the second line.
Y 1 | The Y coordinate of the second endpoint of the second line.
Show | Specifies the display mode for the graphical overlays of the function on top of the image.
0 = hide all | All graphics are hidden, except when the cell containing the function is highlighted in the spreadsheet.
1 = result graphics only | Cross showing the intersection of the two lines, if any.
2 = input and result graphics | The two input lines and the cross showing their intersection will be displayed at all times.

Outputs

Returns | A Dist data structure containing the directed distance between line segments.
Results | When the function is initially inserted into a cell, a result table is created in the spreadsheet.

Vision Data Access functions

The following Dist Vision Data Access functions are automatically inserted into the spreadsheet to create the result table:

Label | Function | Description
--- | --- | ---
X0 | GetX(Dist, 0) | The X coordinate of the first midpoint.
Y0 | GetY(Dist, 0) | The Y coordinate of the first midpoint.
X1 | GetX(Dist, 1) | The X coordinate of the second midpoint.
Y1 | GetY(Dist, 1) | The Y coordinate of the second midpoint.
Angle | GetAngle(Dist) | The angle between the two midpoints.
Distance | GetDistance(Dist) | The distance between the two midpoints.