Add support for combining 2 axes into one virtual axis. (#11)

Reviewed-on: #11

docs/examples/multiple_files/axes.yml

@@ -66,27 +66,20 @@ rules:
 
       
   # Vertical thrust is on the VPC "paddles" in the main flight mode
-  - type: axis
-    name: translation up
+  - type: axis-combined
+    name: translation vertical
     modes:
       - main
-    input:
-      device: right-stick
-      axis: ABS_THROTTLE
-    output:
-      device: primary
-      axis: ABS_THROTTLE
-
-  - type: axis
-    name: translation down
-    modes:
-      - main
-    input:
+    input_lower:
       device: left-stick
-      axis: ABS_THROTTLE
+      axis: Throttle
+      inverted: true
+    input_upper:
+      device: right-stick
+      axis: Throttle
     output:
       device: primary
-      axis: ABS_RUDDER
+      axis: RZ
 
   # By default, the left thumbstick controls tractor beam via mousewheel
   - type: axis-to-relaxis
@@ -125,30 +118,15 @@ rules:
   # In Mining mode, we move vertical thrust to the left thumbstick
   # and remap the right paddle to be mining laser power
   - type: axis
-    name: translation up alternate
+    name: translation up/down alternate
     modes:
       - mining
     input:
       device: left-stick
       axis: RY
-      deadzone_start: 29250
-      deadzone_end: 64000
     output:
       device: primary
-      axis: ABS_THROTTLE
-
-  - type: axis
-    name: translation down alternate
-    modes:
-      - mining
-    input:
-      device: left-stick
-      axis: RY
-      deadzone_start: 0
-      deadzone_end: 30500
-    output:
-      device: primary
-      axis: ABS_RUDDER
+      axis: RZ
 
   - type: axis
     name: mining laser
@@ -156,7 +134,7 @@ rules:
       - mining
     input:
       device: right-stick
-      axis: ABS_THROTTLE
+      axis: Throttle
     output:
       device: primary
-      axis: RZ
+      axis: Throttle

docs/examples/multiple_files/devices.yml

@@ -6,7 +6,7 @@ devices:
   - name: secondary
     type: virtual
     num_buttons: 74
-    num_axes: 2
+    num_axes: 3
   - name: mouse
     type: virtual
     num_buttons: 0

docs/examples/multiple_files/readme.md

@@ -1,7 +1,10 @@
 ## multi-file configuration example
 
 This directory demonstrates how to split your configuration across multiple files.
-Note that we re-define the top-level `rules` element in two different files; this is by design.
+Note that we re-define the top-level `rules` element in two different files; this provides a way to organize
+your rules however you like.
 
 It also serves as a real-world example demonstrating many of the available features of the system.
-It is copied from the author's actual mappings for Star Citizen.
+It is copied from the author's actual mappings for Star Citizen, using dual Virpil Constellation Alpha joysticks,
+CH Products pedals, and a custom-built button panel. (see https://git.annabunches.net/anna/hardware-projects/src/branch/main/flight-panel-2021-11 for
+implementation details of the button panel)

docs/examples/ruletypes.yml

@@ -54,6 +54,19 @@ rules:
       device: main
       axis: ABS_Y
 
+  # Create a single merged output axis from 2 input axes
+  - type: axis-combined
+    input_lower:
+      device: flightstick
+      axis: X
+      inverted: true # the lower half of the axis will often need to be inverted
+    input_uppper:
+      device: flightstick
+      axis: RX
+    output:
+      device: main
+      axis: RZ
+
   # Straightforward button mapping
   - type: button
     input: