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The Datafile PD-CD 1 Issue 2
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PDCD-1 - Issue 02.iso
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_utilities
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utilities
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003
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_mask
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!MaskUtils
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GenMap
(
.txt
)
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RISC OS BBC BASIC V Source
|
1993-09-10
|
2KB
|
82 lines
>GenMap
Custom map generator
By Michel Grimminck
Nb. PROCMap is compatible with that in !Process.GenMap 1.00, the file
itself is not.
File format:
byte 0- 3 indentifier
byte 4- 63 string, discriping the map. <32 terminated
byte 64-319 transformation table for red
byte 320-575 transformation table for green
byte 576-831 transformation table for blue
" at line ";
map 832
text$=""
!File$="<Mask$Dir>.Maps.MyMap"
9!map=&BD2A275D :
randomly chosen indentifier
entry%=0
, red%=entry%:green%=entry%:blue%=entry%
Map(red%,green%,blue%)
Check range
red% < 0
red% = 0
red% > 255
red% = 255
green% < 0
green% = 0
green% > 255
green% = 255
blue% < 0
blue% = 0
blue% > 255
blue% = 255
map?( 64+entry%)=red%
map?(320+entry%)=green%
map?(576+entry%)=blue%
T%=0
59:map?(4+T%)=0:
text$=
text$,60)
T%=1
(text$):map?(3+T%)=
text$,T%)):
"OS_File",10,File$,&FFD,,map,map+832
"Map generated and saved as:'";File$;"'"
red%,
green%,
blue%)
/'text$="False colour transformation"
0 grey%=(red%+green%+blue%)/3
grey%<64
L=grey%/63
31 red%=.4*255*L:green%=.4*255*L:blue%=L*255
4
grey%>=64
grey%<128
L=(grey%-64)/63
7> red%=.4*255*(1-L):green%=255*(.6*L+.4):blue%=255*(1-L)
8
grey%>=128
grey%<192
L=(grey%-128)/63
;/ red%=.8*L*255:green%=255:blue%=.5*255*L
<
grey%>=192
L=(grey%-192)/63
?4 red%=255:green%=255*(1-L):blue%=.5*255*(1-L)
@
red%,
green%,
blue%)
text$="Lighten image"
red% = red% +16
green% = green% +16
blue% = blue% +16
red%,
green%,
blue%)
text$="Red filter"
green% = 0
blue% = 0