Editing Arc

The arc object is a [[BZW]] object that defines an arc or cylinder in the game arena.

==Code==
[[Image:Arcmats.jpg|right|thumb|400px|Appearance of an arc with solid color materials. The words show the names used to map materials to various sides. Obviously, the bottom matref is not shown.]]
To place an arc into your map file, the following template is suggested:
{|
|
 arc
  name example_arc
  divisions 16
  flatshading
  angle 360
  ratio 1
  position 0 0 0
  rotation 0
  size 10 10 10
  shift 0 0 0
  shear 0 0 0
  scale 1 1 1
  spin angle nx ny nz
  texsize -2.0 -2.0 -8.0 -8.0
  phydrv physics_driver_name
  smoothbounce
  
  ## You can give the entire arc a single material with the lone 'matref' property, 
  ## or you can give different parts different materials, as shown below
  matref material0
  top matref material1
  bottom matref material2
  inside matref material3
  outside matref material4
  startside matref material5
  endside matref material6
 end
|}
Valid parameters for an [[arc]] are:
{|{{Prettytable}}
|-
| {{Hl3}} |'''Parameter''' 
| {{Hl3}} |'''Description'''
|-
| '''name''' || defines the name of arc, often unused.
|-
| '''divisions''' || defines the number of subdivisions in the arc.
|-
| '''flatshading''' || defines the use of flat shading, smooth is the default.
|-
| '''angle''' || defines the sweep of the arc, 360 indicates a full circle.
|-
| '''ratio''' || defines the ratio to make a hollow arc, the parameter is (outrad - inrad) / outrad.
|-
| '''position''' || defines the position of the arc in X-pos, Y-pos and the height of the arc in Z.
|-
| '''rotation''' || defines a rotation around the Z axis for the arc, in degrees.
|-
| '''size''' || defines the distance from the center to the side of the arc in X and Y, and the total height of the arc in Z.
|-
| '''shift''' || shift the arc (repeatable).
|-
| '''shear''' || (repeatable).
|-
| '''scale''' || defines the scale of the arc in x,y, and z, 1 is the default, lower values make it smaller (repeatable).
|-
| '''spin angle''' || rotate the arc around a vector by angle. ONE of nx, ny, and nz should be 1, the others should be 0. (repeatable).
|-
| '''texsize''' || texture sizes, changes how the textures scale on the object. In [[BZFlag_2.4.0|2.4.x]] standard [[Box|boxes]] have "texsize -2.0 -2.0 -8.0 -8.0".
|-
| '''phydrv''' || reference to a predefined [[physics|physics driver]].
|-
| '''smoothbounce''' || defines that shot bounces use normals.
|-
| '''matref''' || reference to a predefined [[material]].
|}

==Appearance==
The arc, by default, has the red brick wall texture on the sides, and the grey roofs of normal boxes on the top. However, using [[matref]], one can change the appearance of the arc.

==History==
The arc object has been supported since [[BZFlag 2.0.0]]. In previous versions of BZFlag, this object will not work.

==Editor Support==
Editors that support the arc object include [[Blender]] using the [[BZWTools]], [[Wings3D]], and [[pyBZEdit]]. [[BZEdit]] and [[BZFed]] do NOT support the arcs.

[[Category:Map Making]]
[[Category:Map_Objects]]