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-############################################################################
-#
-# File: novae.icn
-#
-# Subject: Program to show allocations as exploding stars
-#
-# Author: Ralph E. Griswold
-#
-# Date: June 25, 1996
-#
-############################################################################
-#
-# This file is in the public domain.
-#
-############################################################################
-#
-# This program shows allocation on two stars with radiating lines
-#
-# The tool-specific options are:
-#
-# -h i Height of panel, default 300
-# -w i Width of one panel, default 300
-# -s i number of lines, default 360
-# -d draw dot at end of line instead of full line
-#
-############################################################################
-#
-# Requires: Version 9 graphics
-#
-############################################################################
-#
-# Links: em_setup, visprocs
-#
-############################################################################
-#
-# Includes: evdefs.icn
-#
-############################################################################
-
-$include "evdefs.icn"
-
-link em_setup
-link visprocs
-
-$define Height 300
-$define Width 300
-$define Sectors 360
-
-procedure main(args)
- local clear, sdegrees, bdegrees
- local degrees, arc, advance, fullcircle
- local xorg, yorg, radius, radians, dots, sxorg, syorg, bxorg, byorg
-
- em_setup(args)
-
- fullcircle := 360
- sdegrees := bdegrees := 0
- radians := 0
- advance := fullcircle / Sectors # amount to advance
-
- sxorg := integer(Width / 2.0)
- syorg := (Height / 2.0)
- bxorg := sxorg + Width
- byorg := syorg
- radius := ((Height < Width) | Height) / 2.0
-
- vis_setup("label=novae", "size=" || (2 * Width) || "," || Height,
- "bg=black")
-
- Context := context_setup(AllocMask)
-
- while EvGet(AllocMask) do {
- if &eventcode === E_String then {
- xorg := sxorg
- yorg := syorg
- sdegrees +:= advance
- sdegrees %:= fullcircle
- radians := -dtor(sdegrees)
- }
- else {
- xorg := bxorg
- yorg := byorg
- bdegrees +:= advance
- bdegrees %:= fullcircle
- radians := -dtor(bdegrees)
- }
- DrawLine(Context[&eventcode], xorg, yorg, &eventvalue * cos(radians) +
- xorg, &eventvalue * sin(radians) + yorg)
- }
-
- em_end()
-
-end