User talk:Nightmareci: Difference between revisions
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*>Lardarse (Does row -1 mean anything in your definitions?) |
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:The issue I see with using row 0 as bottom in an implementation is that it involves a lot of decrementing, be it line-number from gravity/soft drop or row dropping from line clear, and I personally prefer using increments for the common cases and decrements for the less common cases, when writing software. Also, often a graphics coordinate system operates similarly to my row numbering scheme, with the Y axis going from 0 to larger positive values, top to bottom; an example [http://www.sdltutorials.com/sdl-coordinates-and-blitting/ here]. --[[User:Nightmareci|Nightmareci]] 04:23, 3 March 2009 (UTC) | :The issue I see with using row 0 as bottom in an implementation is that it involves a lot of decrementing, be it line-number from gravity/soft drop or row dropping from line clear, and I personally prefer using increments for the common cases and decrements for the less common cases, when writing software. Also, often a graphics coordinate system operates similarly to my row numbering scheme, with the Y axis going from 0 to larger positive values, top to bottom; an example [http://www.sdltutorials.com/sdl-coordinates-and-blitting/ here]. --[[User:Nightmareci|Nightmareci]] 04:23, 3 March 2009 (UTC) | ||
::I know the theory of top-left being (0,0) when screen drawing. It's just that if you're always assuming that your coordinates are positive, then starting from the top only gives you a limited number of offscreen rows. --[[User:Lardarse|Lardarse]] 01:44, 10 March 2009 (UTC) | |||
Revision as of 01:44, 10 March 2009
Any reason why you aren't using row 0 as the bottom row? --Lardarse 11:24, 2 March 2009 (UTC)
- Mainly so that it more closely matches the way in which it'd be implemented in some programming languages.
- The issue I see with using row 0 as bottom in an implementation is that it involves a lot of decrementing, be it line-number from gravity/soft drop or row dropping from line clear, and I personally prefer using increments for the common cases and decrements for the less common cases, when writing software. Also, often a graphics coordinate system operates similarly to my row numbering scheme, with the Y axis going from 0 to larger positive values, top to bottom; an example here. --Nightmareci 04:23, 3 March 2009 (UTC)
- I know the theory of top-left being (0,0) when screen drawing. It's just that if you're always assuming that your coordinates are positive, then starting from the top only gives you a limited number of offscreen rows. --Lardarse 01:44, 10 March 2009 (UTC)