Unicon Language Reference Clinton L. Jeffery Shamim Mohamed ...

DrawPolygon(w,x1,y1,...,xn,yn) draws a polygon. In 3D, DrawPolygon() takes from 2-4 coordinates
per vertex and returns the list that represents the polygon on the display list for refresh
purposes.
DrawRectangle(w, x1, y1, width1, height1 ...) : window
draw rectangle
DrawRectangle(w,x1,y1,width1,height1,...) draws rectangles. Arguments width and height define
the perceived size of the rectangle; the actual rectangle drawn is width+1 pixels wide and height+1
pixels high.
DrawSegment(w, x1, y1, [z1,] ...) : window [list]
draw line segment
DrawSegment(w,x1,y1,...,xn,yn) draws lines between alternating x,y pairs in the argument list.
In 3D, DrawSegment() takes from 2-4 coordinates per vertex and returns the list that represents
the segments on the display list for refresh purposes.
DrawSphere(w, x, y, z, r, ...) : record
draw sphere
DrawSphere(w, x, y, z, r,. . . ) draws a sphere with radius r centered at (x, y, z) on 3D window w.
The display list element is returned. This procedure fails if the context attribute dim is set to 2.
DrawString(w, x1, y1, s1, ...) : window
draw text
DrawString(w,x,y,s) draws text s at coordinates (x, y). This function does not draw any background;
only the characters’ actual pixels are drawn. It is possible to use "drawop=reverse" with
this function to draw erasable text. DrawString() does not affect the text cursor position. Newlines
present in s cause subsequent characters to be drawn starting at (x, current_y + leading),
where x is the x supplied to the function, current_y is the y coordinate the newline would have
been drawn on, and leading is the current leading associated with the binding.
DrawTorus(w, x, y, z, r1, r2, ...) : record
draw torus
DrawTorus(w, x, y, z, r1, r2,. . . ) draws a torus with inner radius r1, outside radius r2, and centered
at (x,y,z) on 3D window w. The display list element is returned. This procedure fails if the context
attribute dim is set to 2.
EraseArea(w, x:0, y:0, width:0, height:0. ...) : window erase rectangular area
EraseArea(w,x,y,width,height,...) erases rectangular areas within the window to the background
color. If width is 0, the region cleared extends from x to the right side of the window. If height
is 0, the region erased extends from y to the bottom of the window. In 3D, EraseArea(W) clears
the contents of the entire window.
Event(w, i:infinity) : string|integer
read event on window
Event(w, i) retrieves the next event available for window w. If no events are available, Event()
waits for i milliseconds. Keystrokes are encoded as strings, while mouse events are encoded as
integers. The retrieval of an event is accompanied by assignments to the keywords &x, &y, &row,
&col, &interval, &control, &shift, &meta, and if 3D attribute “pick=on”, &pick. Event() fails if the
timeout expires before an event occurs.
Fg(w, s) : string
foreground color
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