The point object

The position (or rather the start and the end position) of a point can be specified by the coordinates option: "coordinates" => [[$xstart,$ystart],[$xend,$yend]] For example, the command point({"type" => "ccirc", "coordinates" => [[-100,-50],[30,20]]}); will draw a solid circle (a "bullet", if you wish) that moves from (-100,-50) to (30,20) along a straight line in a uniform motion.
The most general way to define coordinates though is to add the "polar" option: "coordinates" => [[$xstart,$ystart],[$xend,$yend]] "polar" => [[$rstart,$phistart],[$rend,$phiend]] where $phistart,$phiend is to be given in degrees. The start and end coordinates will then be ($xstart,$ystart) + $rstart*(cos($phistart),sin($phistart)) ($xend,$yend) + $rend*(cos($phiend),sin($phiend)) This makes it easy to move a point on a spiral, for example: point({"type" => "ccirc", "coordinates" => [[-100,-50],[30,20]], "polar" => [[10,0],[100,720]], }); point({"type" => "ccirc", "color" => "Red", "coordinates" => [[-100,-50],[30,20]], "polar" => [[10,0],[50,1080]]});
point has many more options. If they are numeric, they can usually be evolved. For example, you may give the ccirc a color, change its radius, or replace ccirc by oval which introduces options like angle, width, or height. Here a few examples: point({"type" => "ccirc", "color" => "Red", "coordinates" => [[20,20],[-50,-50]], "radius" => [[20],[1]]}); point({"type" => "oval", "angle" => [[20],[1000]], "color" => "Blue", "width" => [[10],[40]], "coordinates" => [[-100,-50],[30,20]]});

Options

	"type" => "ccirc",  # what to draw [ccirc,oval,goval,text]
	"coordinates" => [[0,0],[100,0]], # center for polar coords
	"polar" => [[0,0],[0,0]], # [r,phi] relative to coordinates
	"radius" => [[5]],  # radius of blob
	"width" => [[5]],   # width of oval
	"height" => [[10]], # height of oval
	"angle" => [[0]],     # angle for oval
	"text" => "",     # accompanying text
	"font" => "Helvetica",     # PostScript font
	"textpos" => [[10,90]],  # position of accompanying text
	"textangle" => [[0]], # rotate text
	"textmode" => "c", # how to align text
	"textsize" => [[2]], # size of text
	"greyscale" => [[.5]], # grayscale for goval
	"color" => "Black", # color
	"color1" => "Black", # inner color
	"color2" => "Black", # outer color
	"print" => 1,
	"bethere" => 0,
	"staythere" => 0,
	"interval" => [0,100]