ChainShape class
A chain shape is a free form sequence of line segments. The chain has two-sided collision, so you can use inside and outside collision. Therefore, you may use any winding order. Connectivity information is used to create smooth collisions. WARNING: The chain will not collide properly if there are self-intersections.
Constructors
Properties
- childCount → int
-
Get the number of child primitives
no setteroverride
- hashCode → int
-
The hash code for this object.
no setterinherited
- nextVertex ← Vector2
-
Establish connectivity to a vertex that follows the last vertex.
Don't call this for loops.
no getter
- prevVertex ← Vector2
-
Establish connectivity to a vertex that precedes the first vertex.
Don't call this for loops.
no getter
- radius ↔ double
-
getter/setter pairinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- shapeType → ShapeType
-
finalinherited
- vertexCount → int
-
no setter
-
vertices
→ List<
Vector2> -
Do not modify directly
final
Methods
-
childEdge(
int index) → EdgeShape - Get a child edge.
-
clear(
) → void -
clone(
) → Shape -
override
-
computeAABB(
AABB aabb, Transform xf, int childIndex) → void -
Given a transform, compute the associated axis aligned bounding box for a
child shape.
override
-
computeDistanceToOut(
Transform xf, Vector2 p, int childIndex, Vector2 normalOut) → double -
Compute the distance from the current shape to the specified point.
This only works for convex shapes.
override
-
computeMass(
MassData massData, double density) → void -
Compute the mass properties of this shape using its dimensions and
density. The inertia tensor is computed about the local origin.
density
should be in kilograms per meter squared.override -
createChain(
List< Vector2> vertices) → void - Create a chain with isolated end vertices.
-
createLoop(
List< Vector2> vertices) → void - Create a loop. This automatically adjusts connectivity.
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
raycast(
RayCastOutput output, RayCastInput input, Transform xf, int childIndex) → bool -
Cast a ray against a child shape.
override
-
testPoint(
Transform xf, Vector2 p) → bool -
Test a point for containment in this shape. This only works for convex
shapes.
override
-
toString(
) → String -
A string representation of this object.
inherited
-
vertex(
int index) → Vector2 - Returns the vertex at the given position (index).
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited