Îãëàâëåíèå

Âñòóïëåíèå

Ôîðìàòû áóôåðîâ

Ôóíêöèè

Êîíñòàíòû

Òàáëèöà ýêñïîðòà

Èñòîðèÿ

Âñòóïëåíèå

Äîêóìåíòàöèÿ ê ñâîáîäíîé áèáëèîòåêå buf2d.asm, äëÿ ÎÑ Êîëèáðè.

 Ýòà áèáëèîòåêà ñîçäàíà äëÿ ðàáîòû ñ 2d èçîáðàæåíèÿìè.

 Ñ åå ïîìîùüüþ ìîæíî ñîçäàâàòü áóôåðà ñ èçîáðàæåíèÿìè â ïàìÿòè, è ïðè íåîáõîäèìîñòè âûâîäèòü èõ íà ýêðàí.

 Èçîáðàæåíèÿ ìîæíî íàêëàäûâàòü îäíî íà äðóãîå, ïîääåðæèâàåòñÿ ðàáîòà ñ ïðîçðà÷íûìè èçîáðàæåíèÿìè, åñòü ôóíêöèÿ ðèñîâàíèÿ ëèíè ïîêà íà ýòîì âñå.

Ïîñëåäíåå îáíîâëåíèå áèáëèîòåêè 30.07.10.

Ôîðìàòû áóôåðîâ

Ïîääåðæèâàåòñÿ 3 ôîðìàòà áóôåðîâ.

 Êàæäàÿ ôóíêöèÿ ïðè ðàáîòå ñ áóôåðàìè ìîæåò áûòü ðàñ÷èòàíà íà ðàáîòó ñ îïðåäåëåííûìè ôîðìàòàìè èçîáðàæåíèé.

8 áèò

Ñîæåðæèò àëüôà êàíàë a (ïðîçðà÷íîñòü) èçîáðàæåíèÿ. Íà ýêðàí íå âûâîäèòñÿ. Èñïîëüçóåòñÿ äëÿ ñîçäàíÿ 32-áèòíûõ áóôåðîâ.

24 áèò

Äàííûé áóôåð ñîäåðæèò èçîáðàæåíèå â ôîðìàòå rgb. Ìîæåò âûâîäèòñÿ íà ýêðàí.

32 áèò

Ñîäåðæèò ïðîçðà÷íîå èçîáðàæåíèå â ôîðìàòå rgba. Íà ýêðàí íå âûâîäèòñÿ. Èñïîëüçóåòñÿ äëÿ íàëîæåíèÿ èçîáðàæåíèé.

Ôóíêöèè

Ïî÷òè âñå ôóíêöèè 1-ì ïàðàìåòðîì ïðèíèìàþò óêàçàòåëü íà ñòðóêòóðó áóôåðà,

 èç êîòîðîé ìîãóò èñïîëüçîâàòüñÿ ïàðàìåòðû, íóæíûå äëÿ ðàáîòû êîíêðåòíîé ôóíêöèè.

 Ïðèìåð ñòðóêòóðû áóôåðà èçîáðàæåíèÿ:

align 4

buf_0:

	dd    0 ;+ 0 óêàçàòåëü íà áóôåð èçîáðàæåíèÿ

	dw  100 ;+ 4 îòñòóï ñëåâà

	dw   10 ;+ 6 îòñòóï ñïðàâà

	dd  150 ;+ 8 øèðèíà

	dd  100 ;+12 âûñîòà

	dd 0x80 ;+16 ôîíîâûé öâåò

	db   24 ;+20 áèò íà ïèêñåëü

lib_init

Ýòà ôóíêöèÿ ïîëó÷àåò óêàçàòåëè íà ôóíêöèè ðàáîòû ñ ïàìÿòüþ, âûçûâàòñÿ äîëæíà ïðè çàãðóçêå áèáëèîòåêè. Ìîæåòå èñïîëüçîâàòü ìàêðîñ @use_library_mem, äëÿ åå àâòîìàòè÷åñêîé íàñòðîéêè.

buf2d_create

Ñîçäàåò áóôåð è ÷èñòèò åãî ôîíîâûì öâåòîì.

buf2d_create_f_img

Ñîçäàåò áóôåð íà îñíîâå èçîáðàæåíèÿ â ôîðìàòå rgb.

buf2d_clear

×èñòèò áóôåð ôîíîâûì öâåòîì.

buf2d_draw

Ðèñóåò áóôåð íà ýêðàíå (ðàáîòàåò ÷åðåç ñèñòåìíóþ ô. 7). Ðèñóþòñÿ òîëüêî áóôåðà ñ ãëóáèíîé öâåòà 24 áèòà.

buf2d_delete

Îñâîáîæäàåò ïàìÿòü çàíÿòóþ èçîáðàæåíèåì áóôåðà.

buf2d_line

Ðèñóåò â áóôåðå ëèíèþ ñ çàäàííûì öâåòîì è êîîðäèíàòàìè. Ïðèìåð èñïîëüçîâàíèÿ:

stdcall [buf2d_line], buf_0, 30,10, 110,70, 0xffff00 ;ðèñóåì ëèíèþ

ãäå buf_0 - ñòðóêòóðà áóôåðà â êîòîðîì áóäåò ðèñîâàòüñÿ ëèíèÿ; 30, 10, 110, 70 - êîîðäèíàòû ëèíèè; 0xffff00 - öâåò ëèíèè.

buf2d_circle

Ðèñóåò â áóôåðå îêðóæíîñòü ñ çàäàííûì öâåòîì è ðàäèóñîì. Ïðèìåð èñïîëüçîâàíèÿ:

stdcall [buf2d_circle], buf_0, 25, 70, 15, 0xff0000

ãäå buf_0 - ñòðóêòóðà áóôåðà â êîòîðîì áóäåò ðèñîâàòüñÿ îêðóæíîñòü; 25, 70 - êîîðäèíàòû öåíòðà; 15 - ðàäèóñ; 0xff0000 - öâåò.

buf2d_img_hdiv2

Ñæèìàåò èçîáðàæåíèå â áóôåðå ïî âûñîòå â 2 ðàçà, ïðè ýòîì ðàçìåð ñàìîãî áóôåðà íå óìåíüøàåòñÿ.

buf2d_img_wdiv2

Ñæèìàåò èçîáðàæåíèå â áóôåðå ïî øèðèíå â 2 ðàçà, ïðè ýòîì ðàçìåð ñàìîãî áóôåðà íå óìåíüøàåòñÿ.

buf2d_conv_24_to_8

Ïðåîáðàçîâàíèå áóôåðà èç 24-áèòíîãî â 8-áèòíûé.

 Ïðè ïðåîáðàçîâàíèè óêàçûâàåòñÿ êàêîé öâåò áåðàòü: 0-ñèíèé, 1-çåëåíûé, 2-êðàñíûé.

 Îñòàëüíûå öâåòà ïðè ïðåîáðàçîâàíèè òåðÿþòñÿ.

buf2d_conv_24_to_32

Ïðåîáðàçîâàíèå áóôåðà èç 24-áèòíîãî â 32-áèòíûé.

 Ïðè ïðåîáðàçîâàíèè óêàçûâàåòñÿ òàêæå 8-áèòíûé áóôåð, êîòîðûé áóäåò èñïîëüçîâàí äëÿ ñîçäàíèÿ àëüôà êàíàëà. Ïðèìåð:

stdcall [buf2d_conv_24_to_32],buf_a,buf_b ;äåëàåì áóôåð rgba 32áèò

Äî âûïîëíåíèÿ ôóíêöèè áóôåð buf_a äîëæåí áûòü 24 áèòíûì, à áóôåð buf_b - 8 áèòíûì.

 Ïîñëå âûïîëíåíèÿ ôóíêöèè áóôåð buf_a ñòàíåò 32 áèòíûì, áóôåð buf_b íå èçìåíèòñÿ.

buf2d_bit_blt

Ðèñóåò â áóôåðå èçîáðàæåíèå èç äðóãîãî áóôåðà â óêàçàííûõ êîîðäèíàòàõ. Áóôåð â êîòîðîì ðèñóò (ïðèåìíèê) äîëæåí áûòü 24 áèòíûì, à òîò êîòîðûé ðèñóåòñÿ (èñòî÷íèê) 24 èëè 32 áèòíûì. Åñëè áóôåð èñòî÷íèê 32 áèòíûé, òî åãî ïðîçðà÷íîñòü ïðè ðèñîâàíèè íå ó÷èòûâàåòñÿ, äëÿ ó÷åòà ïðîçðà÷íîñòè èñïîëüçóåòñÿ ôóíêöèÿ buf2d_bit_blt_transp.

buf2d_bit_blt_transp

Ðèñóåò â áóôåðå èçîáðàæåíèå èç äðóãîãî áóôåðà â óêàçàííûõ êîîðäèíàòàõ, ïðè ýòîì ó÷èòûâàåòñÿ ïðîçðà÷íîñòü.

 Áóôåð êîòîðûé áóäåò íàðèñîâàí äîëæåí áûòü 32 áèòíûì, à òîò â êîòîðîì ðèñóþò 24 áèòíûì.

buf2d_bit_blt_alpha

Ðèñóåò â áóôåðå èçîáðàæåíèå èç äðóãîãî áóôåðà â óêàçàííûõ êîîðäèíàòàõ, ïðè ýòîì ó÷èòûâàåòñÿ ïðîçðà÷íîñòü.

 Áóôåð êîòîðûé áóäåò íàðèñîâàí äîëæåí áûòü 8 áèòíûì, à òîò â êîòîðîì ðèñóþò 24 áèòíûì.

buf2d_cruve_bezier

Ðèñóåò ïî òðåì òî÷êàì îòðåçîê êðèâîé áåçüå.

buf2d_convert_text_matrix

Ïðåîáðàçóåò ìàòðèöó ñ òåêñòîì ðàçìåðîì 16*16 â ðàçìåð 1*256. Íåîáõîäèìî äëÿ ñîçäàíèÿ ìàòðèöû äëÿ ðèñîâàíèÿ òåêñòà. Ïåðåä èñïîëüçîâàíèåì äàííîé ôóíêöèè ïðåäïîëàãàåòñÿ ÷òî åñòü èçîáðàæåíèå ñ ïîëíûì íàáîðîì ñèìâîëîâ ðàçìåðîì 16 ñòîëáöîâ íà 16 ñòðîê, èç êîòîðîãî ïðåäâàðèòåëüíî áûë ñîçäàí 8 áèòíûé áóôåð.

stdcall [buf2d_create_f_img], buf_1,[image_data] ;ñîçäàåì áóôåð 24 áèò íà îñíîâå äàííûõ èçîáðàæåíèÿ

stdcall [buf2d_conv_24_to_8], buf_1,1 ;äåëàåì áóôåð ïðîçðà÷íîñòè 8 áèò

stdcall [buf2d_convert_text_matrix], buf_1

ãäå buf_1 - ñòðóêòóðà áóôåðà äëÿ ôîðìèðîâàíèÿ òåêñòîâîé ìàòðèöû;

  image_data - äàííûå èçîáðàæåíèÿ òåêñòîâîé ìàòðèöû â ôîðìàòå rgb, ðàçìåðîì 16*16 ñèìâîëîâ.

buf2d_draw_text

Ðèñóåò òåêñò â áóôåðå, èñïîëüçóÿ ìàòðèöó ñ òåêñòîì ðàçìåðîì 1*256 ñèìâîëîâ. Ïðèìåð:

stdcall [buf2d_draw_text], buf_0, buf_1,some_text,20,10,0x4040ff ;ðèñóåì ñòðîêó ñ òåêñòîì

ãäå buf_0 - ñòðóêòóðà áóôåðà â êîòîðîì áóäåò ðèñîâàòüñÿ òåêñò;

  buf_1 - ñòðóêòóðà áóôåðà ñ òåêñòîâîé ìàòðèöåé â ôîðìàòå 8 áèò, ðàçìåðîì 1*256 ñèìâîëîâ;

  some_text - òåêñò, êîòîðûé áóäåò âûâåäåí â áóôåð buf_0.

buf2d_crop_color

Îáðåçàíèå áóôåðà, ïî óêàçàííîìó öâåòó. Ôóíêöèÿ èñïîëüçóåòñÿ äëÿ óìåíüøåíèÿ ïàìÿòè, çàíèìàåìîé áóôåðîì. Îòðåçàþòñÿ êðàéíèå ÷àñòè áóôåðà èìåþùèå îäèíàêîâûé öâåò. Ïðèìåð:

stdcall [buf2d_crop_color], buf_0,0xffffff,BUF2D_OPT_CROP_TOP+BUF2D_OPT_CROP_BOTTOM

ãäå buf_0 - ñòðóêòóðà áóôåðà êîòîðûé áóäåò îáðåçàí;

  0xffffff - öâåò ïî êîòîðîìó áóäåò îáðåçàòüñÿ áóôåð;

  BUF2D_OPT_CROP_TOP è BUF2D_OPT_CROP_BOTTOM - êîíñòàíòû, óêàçûâàþùèå ñ êàêèõ ñòîðîí îáðåçàòü áóôåð.

buf2d_offset_h

Ñäâèã èçîáðàæåíèÿ â áóôåðå ïî âûñîòå ââåðõ èëè âíèç.

Êîíñòàíòû

BUF2D_OPT_CROP_TOP equ 1

Êîíñòàíòà äëÿ ôóíêöèè buf2d_crop_color, îáîçíà÷àåò îáðåçêó áóôåðà ñâåðõó

BUF2D_OPT_CROP_LEFT equ 2

Êîíñòàíòà äëÿ ôóíêöèè buf2d_crop_color, îáîçíà÷àåò îáðåçêó áóôåðà ñëåâà

BUF2D_OPT_CROP_BOTTOM equ 4

Êîíñòàíòà äëÿ ôóíêöèè buf2d_crop_color, îáîçíà÷àåò îáðåçêó áóôåðà ñíèçó

BUF2D_OPT_CROP_RIGHT equ 8

Êîíñòàíòà äëÿ ôóíêöèè buf2d_crop_color, îáîçíà÷àåò îáðåçêó áóôåðà ñïðàâà

Òàáëèöà ýêñïîðòà

Ïðèìåð òàáëèöû ýêñïîðòà, ðàñ÷èòàííîé íà èñïîëüçîâàíèå ìàêðîñà @use_library_mem:

align 4

import_buf2d_lib:

	dd sz_lib_init

	buf2d_create dd sz_buf2d_create

	buf2d_create_f_img dd sz_buf2d_create_f_img

	buf2d_clear dd sz_buf2d_clear

	buf2d_draw dd sz_buf2d_draw

	buf2d_delete dd sz_buf2d_delete

	buf2d_line dd sz_buf2d_line

	buf2d_circle dd sz_buf2d_circle

	buf2d_img_hdiv2 dd sz_buf2d_img_hdiv2

	buf2d_img_wdiv2 dd sz_buf2d_img_wdiv2

	buf2d_conv_24_to_8 dd sz_buf2d_conv_24_to_8

	buf2d_conv_24_to_32 dd sz_buf2d_conv_24_to_32

	buf2d_bit_blt dd sz_buf2d_bit_blt

	buf2d_bit_blt_transp dd sz_buf2d_bit_blt_transp

	buf2d_bit_blt_alpha dd sz_buf2d_bit_blt_alpha

	buf2d_cruve_bezier dd sz_buf2d_cruve_bezier

	buf2d_convert_text_matrix dd sz_buf2d_convert_text_matrix

	buf2d_draw_text dd sz_buf2d_draw_text

	buf2d_crop_color dd sz_buf2d_crop_color

	buf2d_offset_h dd sz_buf2d_offset_h

	dd 0,0

	sz_lib_init db 'lib_init',0

	sz_buf2d_create db 'buf2d_create',0

	sz_buf2d_create_f_img db 'buf2d_create_f_img',0

	sz_buf2d_clear db 'buf2d_clear',0

	sz_buf2d_draw db 'buf2d_draw',0

	sz_buf2d_delete db 'buf2d_delete',0

	sz_buf2d_line db 'buf2d_line',0

	sz_buf2d_circle db 'buf2d_circle',0

	sz_buf2d_img_hdiv2 db 'buf2d_img_hdiv2',0

	sz_buf2d_img_wdiv2 db 'buf2d_img_wdiv2',0

	sz_buf2d_conv_24_to_8 db 'buf2d_conv_24_to_8',0

	sz_buf2d_conv_24_to_32 db 'buf2d_conv_24_to_32',0

	sz_buf2d_bit_blt db 'buf2d_bit_blt',0

	sz_buf2d_bit_blt_transp db 'buf2d_bit_blt_transp',0

	sz_buf2d_bit_blt_alpha db 'buf2d_bit_blt_alpha',0

	sz_buf2d_cruve_bezier db 'buf2d_cruve_bezier',0

	sz_buf2d_convert_text_matrix db 'buf2d_convert_text_matrix',0

	sz_buf2d_draw_text db 'buf2d_draw_text',0

	sz_buf2d_crop_color db 'buf2d_crop_color',0

	sz_buf2d_offset_h db 'buf2d_offset_h',0

Èñòîðèÿ

02.07.10 - ñàìàÿ ïåðâàÿ âåðñèÿ áèáëèîòåêè, 2 ïðèìåðà èñïîëüçîâàíèÿ.

06.07.10 - ðàñøèðåíû âîçìîæíîñòè ôóíêöèè buf2d_bit_blt, òåïåðü îíà ìîæåò ðèñîâàòü 32 áèòíûå áóôåðû. Äîáàâëåíû 2 íîâûå ôóíêöèè: buf2d_bit_blt_alpha è buf2d_cruve_bezier. Íåáîëüøèå èçìåíåíèÿ â ôóíêöèè buf2d_line.

16.07.10 - èñïðàâëåíî ïî 2 îøèáêè â ôóíêöèÿõ buf2d_img_hdiv2 è buf2d_img_wdiv2, êîòîðûå ìîãëè ïðîÿâëÿòüñÿ ïðè îïðåäåëåííûõ óñëîâèÿõ (åñëè ðàçìåð èçîáðàæåíèÿ áûë êðàòåí 4Êá è äð.). Äîáàâëåíû 2 ôóíêöèè äëÿ âûâîäà òåêñòà â áóôåð buf2d_convert_text_matrix è buf2d_draw_text.

19.07.10 - äîáàâëåíà ôóíêöèÿ ðèñîâàíèÿ îêðóæíîñòè buf2d_circle;

 èçìåíåí ôîðìàò áóôåðà - äëÿ øèðèíû è âûñîòû èñïîëüçóþòñÿ 4-õ áàéòíûå ÷èñëà âìåñòî 2-õ áàéòíûõ.

29.07.10 - äîáàâëåíû ôóíêöèè buf2d_crop_color è buf2d_offset_h;

 èñïðàâëåíèÿ â ôóíêöèè buf2d_delete.