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This page was created on 08-Apr-2010 05:45 by Carsten Strotmann

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Page References

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Super fast circle routine
Super fast circle routine

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Difference between version and

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Description
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!!Description
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Usage of the routine
!!!Usage of the routine
{{{
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}}}
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30000 - Starting address of the calling routine
POK - 1 (draw the circle), 0 (erase the circle)
X - X coordinate of the circle
Y - Y coordinate of the circle
R - Radius of the circle
| 30000 | Starting address of the calling routine
| POK | 1 (draw the circle), 0 (erase the circle)
| X | X coordinate of the circle
| Y | Y coordinate of the circle
| R | Radius of the circle
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Fast circle drawing in pure Atari BASIC
!! Fast circle drawing in pure Atari BASIC
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Magazine: Moj Mikro, 1989/3
Author : Zlatko Bleha
Page : 27 - 31
Atari BASIC listing on disk (tokenized): M8903282.BAS
Atari BASIC listing (listed): M8903282.LST
* Magazine: Moj Mikro, 1989/3
* Author : Zlatko Bleha
* Page : 27 - 31
* Atari BASIC listing on disk (tokenized): M8903282.BAS
* Atari BASIC listing (listed): M8903282.LST
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{{{
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}}}
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Slow circle drawing in Atari BASIC
!! Slow circle drawing in Atari BASIC
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Magazine: Moj Mikro, 1989/3
Author : Zlatko Bleha
Page : 27 - 31
Atari BASIC listing on disk (tokenized): M8903281.BAS
Atari BASIC listing (listed): M8903281.LST
* Magazine: Moj Mikro, 1989/3
* Author : Zlatko Bleha
* Page : 27 - 31
* Atari BASIC listing on disk (tokenized): M8903281.BAS
* Atari BASIC listing (listed): M8903281.LST
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Conclusion
!! Conclusion
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{{{
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}}}
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POK - 1 (drawing a pixel), 0 (erasing a pixel)
X - X coordinate of the pixel
Y - Y coordinate of the pixel
| POK | 1 (drawing a pixel), 0 (erasing a pixel)
| X | X coordinate of the pixel
| Y | Y coordinate of the pixel
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The routine alone is not any faster than normal PLOT command from Atari BASIC, because USR command takes approximatelly 75% of whole execution. But, used as part of the main circle routine it does not matter anymore, because it is integrated in one larger entity. There the execution is very fast, with no overhead. PLOT routine is here for you to examine anyway. You never know if you will maybe need it in the future.
The routine alone is not any faster than normal PLOT command from Atari BASIC, because USR command takes approximately 75% of whole execution. But, used as part of the main circle routine it does not matter anymore, because it is integrated in one larger entity. There the execution is very fast, with no overhead. PLOT routine is here for you to examine anyway. You never know if you will maybe need it in the future.
This page (revision-10) was last changed on 03-Feb-2023 15:21 by Carsten Strotmann  Top