Wrapper for the cpPolyline type. More...

Public Member Functions
(cpFloat)	- momentForMass:offset:
	Calculates the moment of inertia for a looped polyline with the given mass and offset.
(ChipmunkPolyline *)	- simplifyCurves:
	Returns a copy of a polyline simplified by using the Douglas-Peucker algorithm.
(ChipmunkPolyline *)	- simplifyVertexes:
	Returns a copy of a polyline simplified by discarding "flat" vertexes.
(NSArray *)	- asChipmunkSegmentsWithBody:radius:offset:
	Create an array of segments for each segment in this polyline.
(ChipmunkPolyShape *)	- asChipmunkPolyShapeWithBody:offset:
	Create a ChipmunkPolyShape from this polyline. (Must be convex!).
Properties
bool	isLooped
	Returns true if the first and last vertex are equal.
cpFloat	area
	Returns the signed area of the polyline calculated by cpAreaForPoly.
cpVect	centroid
	Centroid of the polyline calculated by cpCentroidForPoly.
NSUInteger	count
	Vertex count.
const cpVect *	verts
	Array of vertexes.

Detailed Description

Wrapper for the cpPolyline type.

Member Function Documentation

- (ChipmunkPolyline *) simplifyCurves: (cpFloat) tolerance

Returns a copy of a polyline simplified by using the Douglas-Peucker algorithm.

This works very well on smooth or gently curved shapes, but not well on straight edged or angular shapes.

- (ChipmunkPolyline *) simplifyVertexes: (cpFloat) tolerance

Returns a copy of a polyline simplified by discarding "flat" vertexes.

This works well on straigt edged or angular shapes, not as well on smooth shapes.

- (cpFloat) area [read, assign]

Returns the signed area of the polyline calculated by cpAreaForPoly.

Non-looped polylines return an area of 0.

- (cpVect) centroid [read, assign]

Centroid of the polyline calculated by cpCentroidForPoly.

It is an error to call this on a non-looped polyline.

The documentation for this class was generated from the following file: