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package sims.test.gui
package scenes
import sims.math._
import sims.dynamics._
object CloudScene extends Scene {
override def description = "A cloud of circles."
val MaxItems = 1000
val MaxItemSize = 0.2
val Width = 10
val Height = 10
val random = new scala.util.Random(1234567890)
def randomCircles(): Seq[Body] = for (i <- 0 until MaxItems) yield {
val rX = random.nextDouble * Width
val rY = random.nextDouble * Height
val c = new Circle(random.nextDouble * MaxItemSize) {
position = Vector2D(rX, rY)
}
new Body(c) {
linearVelocity = Vector2D(random.nextDouble * (if (random.nextBoolean) 1 else -1), random.nextDouble * (if (random.nextBoolean) 1 else -1))
angularVelocity = random.nextDouble * (if (random.nextBoolean) 1 else -1) * 10
}
}
def frame() = {
val points = List(Vector2D(-1, -1), Vector2D(11, -1), Vector2D(11, 11), Vector2D(-1, 11))
for (i <- 0 until points.length) yield {
val sp = points(i)
val ep = points((i + 1) % points.length)
val center = (sp + ep) / 2
val r = new Rectangle((center - ep).length, 0.2) {
position = center
rotation = math.Pi / 2 * i
}
new Body(r) {fixed = true}
}
}
override def init() = {
world.gravity = Vector2D.Null
for (r <- randomCircles()) world += r
//for (r <- frame()) world += r
}
}
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