-`jumpDistToJumpCoord` and `jumpCoordToJumpDist` (Lines: 71-76)
-`riSegToASeg` and `aSegToRISeg` (Lines: 79-113)
#### Explanation
New segment type that is similar to the old `Segment` but stores the `Length` of the segment instead of the `End` position. The helper function `riSegEnd` allows for easy replacement of an RISeg where ASeg.End was needed.
The remaining helper functions allow for conversion between an ASeg and RISeg, eg. with `List.map` when some functions have been converted to use RISegs and some have not.
### 3. Refactor segment intersection detection function
#### Changes in files
- __BusWire.fs__
-`segmentIntersectsSegment` (Lines: 735-765)
#### Explanation
Function `segmentIntersectsSegment` takes in the start and end `XYPos` of two segments and returns `true` if the segments intersect or `false` otherwise. The points are made positive, incase the sign of the position is being used to store data. The start and end of each segment is used to determine if the segment is Horizontal or Vertical, which is then compared. If both segments have the same orientation, they cannot intersect at a point and `false` is immediately returned. Next, the common coordinate of each segment (Y for a Horizontal segment, X for a Vertical segment) is checked against the other segment. If both common coordinates lie on or between the changing coordinate of the other segment, the segments must intersect, and the function returns `true`.
-`singleWireView` (Lines: 918) *To use renderRISegList inplace of renderSegment*
#### Explanation
Segments with `Length = 0` are filtered out, as they do not need to be considered when rendering, and would impact the calculation of which corners to round later. Then the remaining segments are reindexed, so that the indexes of segments are consecutive again. Segments are then zipped (`zip3`) as contextual information about the 2 connecting segments are needed when rendering a segment, eg. the `Index` and `Length` of the connecting segments.
__Here, `Seq.zip3` is used instead of `List.zip3` as the former allows for uneven length sequences to be zipped, by truncating the longer sequences, rather than throwing `System.ArgumentException`. This avoids an expensive operation to remove the last element of `riSegs` when `dummyStartRISeg` is prepended.__
The presence of start and end rounded corners is calculated next. If the adjoining segment is too short, or if there is no connecting segment (ie. the current segment is the start / end), there is no rounded corner. If a rounded corner is present, the respective coordinates (start / end) of the segment are adjusted to meet the `svg path` of the rounded corner, and the path is drawn using a Bezier Curve, where the second control point lies on the end coordinate of the path.
Functions `canvasPortLocation` and `getGlobalPortPos` were created to produce the "Global" Coordinates of the ports
for each symbol at any given rotation and position. `canvasPortLocation` extracts the `APortOffsetsMap` of the specified
symbol and returns a list of the global XYPos ports of the symbol by combining the offsets with the top-left corner of the symbol.
These coordinates are shown by toggling Developer tools in Issie and are outputted every time a selected symbol is rotated
showing its global coordinates in the order described in Types. Keep in mind the coordinates shown are those before the symbol is rotated.
Similar to `canvasPortLocation`, `getGlobalPortPos` is used to generate the "Global" XYPos of a specified Port on the Canvas
given the port and symbol specified. Since, the `APortOffset` map and `STransform` are part of the Symbol type, the entire symbol is passed to the function,
rather than these separately. After categorizing the port passed to the function as type input or output, the appropriate index of the port is extracted
and is used as a key to extract the correct coordinates of the port to display and to be used by buswire.fs. Since the `APortOffsetMap` is updated
at every rotation (discussed in later extensions), `getGlobalPortPos` will always receive a new `APortOffsetMap` at every orientation and thus
not require the current orientation as input. This can be tested by rotating a symbol and connecting another symbol's ports to its ports.
It can be observed that the gray circles used to distinguish which ports connection can be made are correctly displayed on the rotated symbol, and
the buswire correctly connects to that rotated port location. However, two issues seem to arise. The wire is connected parallel to the
port, if the symbol is rotated as the `buswire.fs` is expecting the symbol to be non-rotated. Additionally, the `buswire.fs` seems to only
update when the symbol is moved. As a result, a communication between the rotations and orientations of the symbol need to be passed
to `buswire.fs` to ensure that the wires are correctly displayed during rotation. This will be done later on in the group work.
The function `viewSelectedComponent` was changed to include a Division field with a list of the ports available to be changed depending on the current symbol selected and a list of the available sides to be moved. In order to move the symbol the port needed to be changed and side selected the most recently changed port on a specific side would be indexed first (ports whose side selected was the same as before would be moved to 1st index). By pressing the submit button the specific change of side will be made. This call is made through `PopupView.fs` of the `setComponentPortUpdate` function responsible for passing the call to the sheet in order to dispatch this change to `Symbol.fs` and `Buswire.fs`. This dispatches are made by the member `this.ChangePort` accessed from `PopupView.fs` were the `UpdateWires` function is called in order and in `Symbol.fs` the Update function `ChangePort` is selected where the construction of a new symbol whose specified port is moved to the side requested is built and made to replace the previous symbol with the specified id passed from `SelectedComponentView.fs`.
