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package sims.test.gui
package scenes
import sims.dynamics._
import sims.math._
import sims.dynamics._
object CollisionScene extends Scene {
override def description = "A basic collision detection test."
var c1 = (new Circle(1) {restitution = 1.0}).asBody
var c2 = (new Circle(1) {position = Vector2D(3, 0)}).asBody
var r1 = (new Rectangle(0.5, 0.5) {position = Vector2D(6,0)}).asBody
def init() = {
c1 = (new Circle(1) {restitution = 1.0}).asBody
c2 = (new Circle(1) {position = Vector2D(3, 0); restitution = 1.0}).asBody
r1 = (new Rectangle(0.5, 0.5) {position = Vector2D(6,0)}).asBody
c1.linearVelocity = Vector2D(1, 0)
world.gravity = Vector2D(0, 0)
world += c1
world += c2
world += r1
reactions += {
case Stepped(`world`) =>
println(
"p: " + (c1.linearMomentum.length + c2.linearMomentum.length + r1.linearMomentum.length).toFloat +
"\tE: " + (E(c1) + E(c2) + E(r1)).toFloat
)
}
}
def E(b: Body) = {
(b.linearVelocity dot b.linearVelocity) * b.mass / 2
}
}
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