Difference between revisions of "B2.CircleShape"
From GiderosMobile
| Line 2: | Line 2: | ||
<languages /> | <languages /> | ||
<!-- GIDEROSOBJ:b2.CircleShape --> | <!-- GIDEROSOBJ:b2.CircleShape --> | ||
| − | ''' | + | '''Supported platforms:''' [[File:Platform android.png]][[File:Platform ios.png]][[File:Platform mac.png]][[File:Platform pc.png]][[File:Platform html5.png]][[File:Platform winrt.png]][[File:Platform win32.png]]<br/> |
| − | ''' | + | '''Available since:''' Gideros 2011.6<br/> |
| − | ''' | + | '''Inherits from:''' [[Special:MyLanguage/b2.Shape|b2.Shape]]<br/> |
| − | === | + | |
| − | + | === Description === | |
| − | A circle shape. | + | A circle shape. |
| − | + | ||
| − | === | + | === Examples === |
| − | '''Creating a circle body''' | + | '''Creating a circle body''' |
| − | <source lang="lua">--create ball bitmap object from ball graphic | + | <source lang="lua"> |
| + | --create ball bitmap object from ball graphic | ||
local ball = Bitmap.new(Texture.new("./ball.png")) | local ball = Bitmap.new(Texture.new("./ball.png")) | ||
--reference center of the ball for positioning | --reference center of the ball for positioning | ||
ball:setAnchorPoint(0.5,0.5) | ball:setAnchorPoint(0.5,0.5) | ||
| − | |||
ball:setPosition(x,y) | ball:setPosition(x,y) | ||
| − | |||
--get radius | --get radius | ||
local radius = ball:getWidth()/2 | local radius = ball:getWidth()/2 | ||
| Line 27: | Line 26: | ||
local circle = b2.CircleShape.new(0, 0, radius) | local circle = b2.CircleShape.new(0, 0, radius) | ||
local fixture = body:createFixture{shape = circle, density = 1.0, | local fixture = body:createFixture{shape = circle, density = 1.0, | ||
| − | friction = 0.1, restitution = 0.2}</source> | + | friction = 0.1, restitution = 0.2} |
| + | </source> | ||
| + | |||
{|- | {|- | ||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
| − | === | + | === Methods === |
[[Special:MyLanguage/b2.CircleShape.new|b2.CircleShape.new]] <br/><!-- GIDEROSMTD:b2.CircleShape.new(centerx,centery,radius) --> | [[Special:MyLanguage/b2.CircleShape.new|b2.CircleShape.new]] <br/><!-- GIDEROSMTD:b2.CircleShape.new(centerx,centery,radius) --> | ||
| − | [[Special:MyLanguage/b2.CircleShape:set|b2.CircleShape:set]] '' | + | [[Special:MyLanguage/b2.CircleShape:set|b2.CircleShape:set]] ''sets the center point and radius''<br/><!-- GIDEROSMTD:b2.CircleShape:set(centerx,centery,radius) sets the center point and radius --> |
| + | |||
| style="width: 50%; vertical-align:top;"| | | style="width: 50%; vertical-align:top;"| | ||
| − | === | + | === Events === |
| − | === | + | === Constants === |
|} | |} | ||
| − | + | ---- | |
| + | *'''[[LiquidFun]]''' | ||
Revision as of 07:18, 17 February 2020
Supported platforms: 
Available since: Gideros 2011.6
Inherits from: b2.Shape
Description
A circle shape.
Examples
Creating a circle body
--create ball bitmap object from ball graphic
local ball = Bitmap.new(Texture.new("./ball.png"))
--reference center of the ball for positioning
ball:setAnchorPoint(0.5,0.5)
ball:setPosition(x,y)
--get radius
local radius = ball:getWidth()/2
--create box2d physical object
local body = world:createBody{type = b2.DYNAMIC_BODY}
body:setPosition(ball:getX(), ball:getY())
body:setAngle(ball:getRotation() * math.pi/180)
local circle = b2.CircleShape.new(0, 0, radius)
local fixture = body:createFixture{shape = circle, density = 1.0,
friction = 0.1, restitution = 0.2}
Methodsb2.CircleShape.new |
EventsConstants |
