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wiki:computronics:camera [2015/06/25 11:59] (current)
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 +====== Camera ======
  
 +The **Camera** lets you gather information (specifically,​ distance from nearest block) in your surroundings.
 +
 +===== Recipe =====
 +
 +**NOTE:** The stone bricks on top can be any type of stone bricks.
 +
 +{{ :​wiki:​computronics:​camera_recipe.png |}}
 +
 +===== API =====
 +
 +==== Redstone ====
 +
 +Since 0.1.4, you can hook up a redstone wire to the camera to get distance data - the energy level reflects the distance (15 - 0-1 blocks away, 14 - 2-3 blocks away, ...., 1 - 30-31 blocks away).
 +
 +==== OpenComputers/​ComputerCraft ====
 +
 +^ Command ^ Added in ^ Description ^ Usage ^
 +| distance([x,​ y]) | 0.1.0 | Calculates the distance of the closest block. | The x and y parameters are optional. |
 +
 +=== Robot Camera Upgrade-specific ====
 +
 +^ Command ^ Added in ^ Description ^
 +| distanceUp([x,​ y]) | 0.6.4 (broken before then) | Acts as a camera pointed up. |
 +| distanceDown([x,​ y]) | 0.6.4 (broken before then) | Acts as a camera pointed down. |
 +
 +==== NedoComputers ====
 +
 +^ Address ^ Read ^ Write ^
 +| 0x00 | X direction (-32768 - 32767 == -1.0 - 1.0) | X direction |
 +| 0x02 | Y direction | Y direction |
 +| 0x04 | Distance, measured in 1/64ths of a block. | - |
 +
 +==== Examples ====
 +
 +=== ComputerCraft ray caster ===
 +
 +<​code>​local camera = peripheral.wrap("​right"​)
 +local array = " .,​-=+xX#"​
 +local monitor = peripheral.wrap("​monitor_0"​)
 +local yp = 1
 +monitor.clear()
 +monitor.setTextScale(0.5)
 +monitor.setCursorPos(1,​1)
 +
 +for j = -0.35,​0.25,​0.025 do
 +  for i = -1,1,0.036 do
 +    local d = camera.distance(i,​ 0-j)
 +    local a = 1
 +    if d > 0 then a = 2 + (8 - math.min(8, (d/1.2))) end
 +    monitor.write(string.sub(array,​ a, a))
 +  end
 +  yp=yp+1
 +  monitor.setCursorPos(1,​yp)
 +end</​code>​
wiki/computronics/camera.txt ยท Last modified: 2015/06/25 11:59 (external edit)