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(hilbert) Faster drawing routine

This commit is contained in:
Devine Lu Linvega 2024-01-21 09:17:20 -08:00
parent f3d86c5384
commit af7a59623b
1 changed files with 21 additions and 43 deletions
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64
projects/examples/demos/hilbert.tal
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@ -5,9 +5,9 @@
@on-reset ( -> ) @on-reset ( -> )
( | theme ) ( | theme )
#6f0b .System/r DEO2 #6fff .System/r DEO2
#7f0a .System/g DEO2 #7fff .System/g DEO2
#8e0a .System/b DEO2 #8fff .System/b DEO2
( | screen size ) ( | screen size )
#00c0 #00c0
( ) DUP2 .Screen/width DEO2 ( ) DUP2 .Screen/width DEO2
@ -24,10 +24,24 @@
[ LIT2 &x1 0020 ] [ LIT2 &y1 0020 ] [ LIT2 &x1 0020 ] [ LIT2 &y1 0020 ]
( ) [ LIT2 &f $2 ] INC2 DUP2 ,&f STR2 ( ) [ LIT2 &f $2 ] INC2 DUP2 ,&f STR2
d2xy d2xy
( ) DUP2 ,&y1 STR2 ( cache y ) DUP2 ,&y1 STR2
( ) OVR2 ,&x1 STR2 ( cache x ) OVR2 ,&x1 STR2
#01 <draw-line> ( | draw line )
BRK ROT2 SWP2 diff ,&y STR2
diff ,&x STR2
#0400
&l ( -- )
.Screen/x DEI2k [ LIT2 &x $2 ] ADD2 ROT DEO2
.Screen/y DEI2k [ LIT2 &y $2 ] ADD2 ROT DEO2
[ LIT2 01 -Screen/pixel ] DEO
INC GTHk ?&l
POP2 BRK
@diff ( a* b* -- dir* )
EQU2k ?{
GTH2 ?{ #0001 JMP2r }
#ffff JMP2r }
POP2 POP2 #0000 JMP2r
@d2xy ( d* -- x* y* ) @d2xy ( d* -- x* y* )
,&t STR2 ,&t STR2
@ -60,39 +74,3 @@
( swap ) SWP2 } ( swap ) SWP2 }
POP2r JMP2r POP2r JMP2r
@<draw-line> ( x1* y1* x2* y2* color -- )
,&color STR
,&y STR2
,&x STR2
,&y2 STR2
,&x2 STR2
,&x LDR2 ,&x2 LDR2 SUB2 abs2 ,&dx STR2
#0000 ,&y LDR2 ,&y2 LDR2 SUB2 abs2 SUB2 ,&dy STR2
#ffff [ LIT2 00 _&x2 ] LDR2 ,&x LDR2 lts2 DUP2 ADD2 ADD2 ,&sx STR2
#ffff [ LIT2 00 _&y2 ] LDR2 ,&y LDR2 lts2 DUP2 ADD2 ADD2 ,&sy STR2
[ LIT2 &dx $2 ] [ LIT2 &dy $2 ] ADD2 STH2
&while ( -- )
[ LIT2 &x2 $2 ] DUP2 .Screen/x DEO2
[ LIT2 &x $2 ] EQU2 [ LIT2 &y2 $2 ] DUP2 .Screen/y DEO2
[ LIT2 &y $2 ] EQU2 [ LIT2 &color $1 -Screen/pixel ] DEO
AND ?&end
STH2kr DUP2 ADD2 DUP2 ,&dy LDR2 lts2 ?&skipy
STH2r ,&dy LDR2 ADD2 STH2
,&x2 LDR2 [ LIT2 &sx $2 ] ADD2 ,&x2 STR2
&skipy ( -- )
,&dx LDR2 gts2 ?&while
STH2r ,&dx LDR2 ADD2 STH2
,&y2 LDR2 [ LIT2 &sy $2 ] ADD2 ,&y2 STR2
!&while
&end POP2r JMP2r
@abs2 ( a* -- f )
DUP2 #0f SFT2 EQU ?{ #0000 SWP2 SUB2 }
JMP2r
@lts2 ( a* b* -- f )
#8000 STH2k ADD2 SWP2 STH2r ADD2 GTH2 JMP2r
@gts2 ( a* b* -- f )
#8000 STH2k ADD2 SWP2 STH2r ADD2 LTH2 JMP2r