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Diffstat (limited to 'src/main/scala/sims/dynamics/Shape.scala')
| -rw-r--r-- | src/main/scala/sims/dynamics/Shape.scala | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/src/main/scala/sims/dynamics/Shape.scala b/src/main/scala/sims/dynamics/Shape.scala new file mode 100644 index 0000000..d1aa1ae --- /dev/null +++ b/src/main/scala/sims/dynamics/Shape.scala @@ -0,0 +1,67 @@ +/* _____ _ __ ________ ___ *\ +** / ___/(_) |/ / ___/ |__ \ Simple Mechanics Simulator 2 ** +** \__ \/ / /|_/ /\__ \ __/ / copyright (c) 2011 Jakob Odersky ** +** ___/ / / / / /___/ / / __/ ** +** /____/_/_/ /_//____/ /____/ ** +\* */ + +package sims.dynamics + +import sims.collision._ +import sims.math._ + + +/** + * @define shape shape */ +trait Shape extends AnyRef with Collidable with CachedCollidable { + + override def equals(that: Any) = super.equals(that) + override def hashCode = super.hashCode + + /** (temporary solution) Local position of $shape to body. + * @deprecated find solution avoiding NullPointers + * @todo find solution avoiding NullPointers */ + var local: Option[Vector2D] = None + + var body: sims.dynamics.Body = null + + override def fixed = body.fixed + + var restitution = 1.0 + + /**Position of this $shape's center of mass in world coordinates.*/ + private var _position: Vector2D = Vector2D.Null + def position = _position + def position_=(pos: Vector2D) = { + _position = pos + move() + } + + /**Rotation of this shape about its center of mass.*/ + var rotation: Double = 0.0 + + /** Mass per area. */ + def density: Double = 1.0 + + /** Area of this $shape. */ + def area: Double + + /** Mass of this $shape. The mass is given by volume times density. */ + def mass: Double = area * density + + /**Moment of inertia for a rotation about this $shape's center of mass.*/ + def inertia: Double + + /**Returns this $shape's axis aligned bounding box.*/ + def aabb: sims.collision.AABB + + /**Returns the projection of this $shape onto the line given by the directional vector <code>axis</code>. + * @param axis directional vector of the line + * @return projection of this shape*/ + def project(axis: Vector2D): Projection + + /**Checks if the point <code>point</code> is contained in this $shape.*/ + def contains(point: Vector2D): Boolean + + def asBody = new sims.dynamics.Body(this) +}
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