The Blob was written by David N Smith. It started out as a simple test of the CurveMorph and ended up as an oozing, pulsating, repulsive mess which will wander across your screen until killed. Each instance has its own rate of oozing, so some are faster than others. It's not good for anything.

Try:
BlobMorph new openInWorld

15 Jan 2000 by Bob Arning, a change so that the blob tries to be a color like the color under itself.
16 Jan 2000 by David N Smith, added blob merging: if two blobs meet then one eats the other.
18 Jan 2000
by Sean McGrath, smother color changes.
06 Feb 2000 by Stefan Matthias Aust, refactoring and support for duplication, dragging and translucent colors.

	debug and other
	installModelIn:

	geometry
	setConstrainedPosition:hangOut:

	geometry testing
	containsPoint:

	initialization
	initialize initializeBlobShape initializeColor initializeToStandAlone maximumVelocity setVelocity

	stepping
	adjustColors bounceOffWalls limitRange: mergeBlobs mergeSelfWithBlob:atPoint: oozeAFewPointsOf: selfPolarPointRadius:degrees: step stepTime

	submorphs-add/remove
	delete

	instance creation
	new

	instance remembering
	delete: remember:

	copying	top
	veryDeepCopy Do a complete tree copy using a dictionary. An object in the tree twice is only copied once. All references to the object in the copy of the tree will point to the new copy.

	debug and other	top
	installModelIn: Overwritten to not add handles to the receiver.

	geometry	top
	setConstrainedPosition:hangOut: Deal with dragging the blob over another blob which results in spontaneous deletations.

	geometry testing	top
	containsPoint:

	initialization	top
	initialize
	initializeBlobShape
	initializeColor
	initializeToStandAlone Override PolygonMorph's version
	maximumVelocity
	setVelocity

	stepping	top
	adjustColors Bob Arning <arning@charm.net>
	bounceOffWalls Change sign of velocity when we hit a wall of the container
	limitRange: limit radius to range 20-120; limit interpoint angle to surrounding angles with max of twice of average separation.
	mergeBlobs See if we need to merge by checking our bounds against all other Blob bounds, then all our vertices against any Blob with overlapping bounds. If we find a need to merge, then someone else does all the work.
	mergeSelfWithBlob:atPoint: It has already been determined that we merge with aBlob; we do all the work here.
	oozeAFewPointsOf: change some points at random to cause oozing across screen
	selfPolarPointRadius:degrees: Same as Point>>#r:degrees: in Point class except that x and y are not truncated to integers
	step Do some periodic activity. Use startStepping/stopStepping to start and stop getting sent this message. The time between steps is specified by this morph's answer to the stepTime message. The generic version dispatches control to the player, if any. The nasty circumlocation about owner's transformation is necessitated by the flexing problem that the player remains in the properties dictionary both of the flex and the real morph. In the current architecture, only the top renderer's pointer to the player should actually be honored for the purpose of firing.
	stepTime Answer the desired time between steps in milliseconds.

	submorphs-add/remove	top
	delete Remove the receiver as a submorph of its owner and make its new owner be nil.

	initialization	top
	descriptionForPartsBin If the receiver is a member of a class that would like to be represented in a parts bin, answer the name by which it should be known, and a documentation string to be provided, for example, as balloon help. When the 'nativitySelector' is sent to the 'globalReceiver', it is expected that some kind of Morph will result. The parameters used in the implementation below are for documentation purposes only!

	instance creation	top
	new Answer a new instance of the receiver (which is a class) with no indexable variables. Fail if the class is indexable.

	instance remembering	top
	delete:
	remember: