Spot,   by Frank Vollbrecht, Buettgen, 2002, Dynamics of a Spot

 
 
 

Starting Position	The starting position will show a red spot which is surrounded by changing white rays. This image may be a symbolised japanese sun. The effect of moving rays is based on several virtuell circles, which are attached by narrow white quadrangles. The position of quadrangles is fixed on the circles, which begin immediately  to rotate between changing angles. This construction results in increasing dynamics while the angles become greater.
Color selection	Mouse clicks in the outer regions of the image will change the colors of the white quadrangles. The colors increase optical effecs. Colors are chosen by the program itself. If you get colors with deep blue or deep green shape you will see additional threedimensional effects. The blue example on left hand side does not show these effects because of  its resolution.
Dynamics	If you do not leave the image window you will  register an increasing dynamics of movements. About 1 minute after beginning short sequences with fast optical effects will arise. These effects result from different combinations of rotations of the virtual circles. These combinations are chosen by the program itself. Some optical effects are combined with strong and confusing threedimensional effects.
Maximal Dynamics	Deserting the picture with the mouse will lead  to increasing dynamics. The virtual concentric circles receive an additional change of diameter which is chosen by the program itself. Due to the fixation of the quadrangles on these circles the quadrangles receive a fast change of lenght which increases the dynamics of movement.     The return of the mouse into the image will stabilise the diameters of the virtual circles. The movement and dynamics will slow down a bit. But due to changed diameters related to the starting position you will now watch some different types of moving sequences of the quadrangles. The relative regular sequences after the starting position are lost at the first exit of the image window with the mouse.
Restoring the Starting Position	A mouse click in the central image area will introduce a process which restores the starting position. After restoring the diameters of the original circles white quadrangles in form of rays will be overladen. The sequence now starts again so that you may see the japanese sun again.  The restoring process works very fast when the mouse did not leave the image window. It will take several seconds if the diameters are strongly disturbed..