examples-untitled.eve

# Wires in Eve
## Logic and Detection
### Groups That Are Wires
```
search @canvas
  [#group id strokes: s1]
  s1 = [#stroke color: red]
  [#group id strokes: s2]
  s2 != s1

commit
  wire = [#wire sensor: s1 conductor: s2]
```

### Wires Can Be Live
```
search @canvas @session
  liveWire = [#stroke color: "yellow"]
  wire = [#wire sensor conductor]
  isLive = if
             // conductor {x,y}1 and {x,y}2 are the same
             (conductor.x1 - liveWire.x1) / (liveWire.x2 - liveWire.x1) =
             (conductor.y1 - liveWire.y1) / (liveWire.y2 - liveWire.y1)
           then true
           else false
  
commit
  wire <- [live: isLive]
```

## Setup
### Add Strokes and Groups
(should be done visuallly)

```
commit @canvas
  group = [#group id: "foo"]
  stroke1 = [#stroke x1: 0 x2: 10 y1: 0 y2: 0]
  stroke2 = [#stroke x1: 0 x2: 0  y1: 0 y2: 0 color: "red"]
  group <- [strokes: stroke1]
  group <- [strokes: stroke2]
  // liveWire
  [#stroke x1: -5 x2: 5 y1: 0 y2: 0 color: "yellow"]
```

## Debugging
### Debug Strokes
```eve disabled
search @canvas
  stroke = [#stroke x1 x2 y1 y2]
  withColor = if stroke.color then " with color {{stroke.color}}"
              else ""

commit @canvas @session
  stroke.printf := "(({{x1}},{{y1}}) to ({{x2}},{{y2}}))"

bind @browser
  [#div text: "Stroke from ({{x1}},{{y1}}) to ({{x2}},{{y2}}){{withColor}}."]
```

### Debug Groups
```eve disabled
search @canvas
  [#group id strokes]
  str = strokes.printf
  strokeString = join[str given: str, with: ", "]

bind @browser
  [#div text: "Group {{id}} with {{strokeString}}"]
```

### Debug Wires
```eve
search
  wire = [#wire sensor conductor]
  onOff = if wire.live then "on"
           else "off"
  
bind @browser
  [#div text: "Wire: Sensor {{sensor.printf}}, Conductor {{conductor.printf}} is {{onOff}}."]

```