Struct b2ChainDef 

#[repr(C)]
pub struct b2ChainDef {
    pub userData: *mut c_void,
    pub points: *const b2Vec2,
    pub count: c_int,
    pub materials: *const b2SurfaceMaterial,
    pub materialCount: c_int,
    pub filter: b2Filter,
    pub isLoop: bool,
    pub enableSensorEvents: bool,
    pub internalValue: c_int,
}

Used to create a chain of line segments. This is designed to eliminate ghost collisions with some limitations.

• chains are one-sided
• chains have no mass and should be used on static bodies
• chains have a counter-clockwise winding order (normal points right of segment direction)
• chains are either a loop or open
• a chain must have at least 4 points
• the distance between any two points must be greater than B2_LINEAR_SLOP
• a chain shape should not self intersect (this is not validated)
• an open chain shape has NO COLLISION on the first and final edge
• you may overlap two open chains on their first three and/or last three points to get smooth collision
• a chain shape creates multiple line segment shapes on the body https://en.wikipedia.org/wiki/Polygonal_chain Must be initialized using b2DefaultChainDef(). @warning Do not use chain shapes unless you understand the limitations. This is an advanced feature. @ingroup shape

Fields

userData: *mut c_void

Use this to store application specific shape data.

points: *const b2Vec2

An array of at least 4 points. These are cloned and may be temporary.

count: c_int

The point count, must be 4 or more.

materials: *const b2SurfaceMaterial

Surface materials for each segment. These are cloned.

materialCount: c_int

The material count. Must be 1 or count. This allows you to provide one material for all segments or a unique material per segment. For open chains, the material on the ghost segments are place holders.

filter: b2Filter

Contact filtering data.

isLoop: bool

Indicates a closed chain formed by connecting the first and last points

enableSensorEvents: bool

Enable sensors to detect this chain. False by default.

internalValue: c_int

Used internally to detect a valid definition. DO NOT SET.

Trait Implementations

impl Clone for b2ChainDef

fn clone(&self) -> b2ChainDef

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for b2ChainDef

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for b2ChainDef