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MFC/Raster Operation

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1. ROP?

CDC๋Š” ๋‹–‘•œ ๋“œ๋กœœ™ ๋ชจ๋“œ๋ฅผ  œณต•œ‹ค. ROP๋Š” ธ๋Ÿฐ ๋“œ๋กœœ™ ๋ชจ๋“œ˜ •˜๋‚˜๋กœ, ๋™ œผ๋กœ ๋ณ€™”๋˜๋Š” ธ๋ฆผ„ ธ๋ฆด๋•Œ ธ๋ฆผ„ ง€šฐ ‹‹œธ๋ฆฌ๋Š” ž‘—…„ •˜๋Š”๋ฐ œ šฉ•˜‹ค.
~cpp CDC::SetROP2()ผ๋Š” •ˆ˜๋กœ  œณต•˜๋ฉฐ RasterOPerationTo˜ •žด๋‹ค.

2. CDC Drawing Modes

R2_BLACK ๋ชจ๋“  ธ๋ฆผ€ ฒ€€ƒ‰
R2_WHITE ๋ชจ๋“  ธ๋ฆผ€ ƒ‰
R2_NOP •„๋ฌด๋Ÿฐ ธ๋ฆฌธฐ ž‘—…„ •˜ง€ •ŠŒ
R2_NOT ธ๋ฆผ™”๋ฉดƒ‰˜ ๋ฐ˜๋Œ€ฐ€ ๋œ‹ค. œ •ƒ ๋ณดฒŒ •˜   • •Œ “ฐธ๋‹ค.
R2_COPYPEN Žœƒ‰œผ๋กœ ธ๋ ง
R2_NOTCOPYPEN Žœƒ‰ณผ ๋ฐ˜๋Œ€˜ ƒ‰œผ๋กœ ธ๋ ง
R2_MERGEPENNOT Žœ˜ ƒ‰ณผ ๋ฐฐฒฝณผ ๋ฐ˜๋Œ€ƒ‰„ OR๋กœ ๋งŒ๋“ค–ด„ ƒ‰œผ๋กœ ธ๋ ง
R2_MASKPENNOT Žœ ƒ‰ณผ ๋ฐฐฒฝณผ ๋ฐ˜๋Œ€ƒ‰„ AND๋กœ ๋งŒ๋“ค–ด„ ƒ‰œผ๋กœ ธ๋ ง
R2_MERGENOTPEN Žœ˜ ๋ฐ˜๋Œ€ƒ‰ณผ ๋ฐฐฒฝƒ‰„ OR๋กœ —ฐ‚ฐ•œ ƒ‰œผ๋กœ ธ๋ ง
R2_MASKNOTPEN Žœ˜ ๋ฐ˜๋Œ€ƒ‰ณผ ๋ฐฐฒฝƒ‰„ AND๋กœ —ฐ‚ฐ•œ ƒ‰œผ๋กœ ธ๋ ง
R2_MERGEPEN Žœƒ‰ณผ ๋ฐฐฒฝƒ‰„ OR๋กœ —ฐ‚ฐ•œ ƒ‰œผ๋กœ ธ๋ ง
R2_NOTMERGEPEN R2_MERGEPEN˜ ๋ฐ˜๋Œ€ƒ‰œผ๋กœ ธ๋ ง
R2_MASKPEN ๋ฐฐฒฝƒ‰ณผ Žœ˜ ƒ‰„ AND๋กœ —ฐ‚ฐ•œ ƒ‰œผ๋กœ ธ๋ ง
R2_NOTMASKPEN R2_MASKPENƒ‰ณผ ๋ฐ˜๋Œ€˜ ƒ‰œผ๋กœ ธ๋ ง
R2_XORPEN Žœณผ ๋ฐฐฒฝƒ‰„ XOR—ฐ‚ฐ•œ ฒฐณผ๋กœ ธ๋ ง
R2_NOTXORPEN R2_XORPENณผ ๋ฐ˜๋Œ€˜ ƒ‰œผ๋กœ ธ๋ ง
ROP™€ ด€„๋œ ๋ชจ๋“œ๋Š” R2_NOTXORPENด๋‹ค.

3. Explaination

๋ฐฐฒฝƒ‰  ธ๋ฆผ„ ธ๋ฆฌ๋Š” ƒ‰ด ๋ถ‰€ ƒ‰ด๋ผ๋ฉด?
R G B
BACK>WHITE 1 1 1
PEN>RED 1 0 0
XOR 0 1 1
NOTXOR 1 0 0
ƒธฐ—„œ ๋ณด๋“ฏ ฒฐณผ๋Š” ๋ถ‰€ ƒ‰ด๋œ‹ค.

 œ ธ๋ „ ธ๋ฆผœ„— ๋‹‹œ ๋ถ‰€ ƒ‰œผ๋กœ ธ๋ฆผ„ ธ๋ฆฐ๋‹  ฐ€ ••ด๋ณดž.
R G B
BACK>RED 1 0 0
PEN>RED 1 0 0
XOR 0 0 0
NOTXOR 1 1 1
ƒธฐ—„œ ๋ณด๋“ฏ ›๋ž˜˜ ๋ฐฐฒฝ ƒ‰œผ๋กœ‹‹œ „›Œ„ ฒƒ„ ™••  ˆ˜ žˆ๋‹ค.

ด๋ฅผ šฉ•˜๋ฉด ธ๋ฆผ„ ง€šฐ๋Š” ณผ •„ •˜ง€ •Š ‹ˆœžˆ ๋™•œ ธ๋ฆผ„ ธ๋ฆผœผ๋กœจ ธฐกด˜ ธ๋ „ ธ๋ฆผ„ „‹žˆ ง€šฐ๋Š” ฒƒฐ€๋Šฅ•˜‹ค.

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