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warptext
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warptext.i
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1992-05-06
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55 lines
* ------------------------------------------------------------------------
* graphics/WarpText.i -- Assembler include file for Bill Kelly
* WarpText text routines. 07/07/87
*
* Copyright 1987 by Bill W. Kelly. All Rights Reserved.
*
* This is meant to go in the Graphics directory of the assembler includes.
* When you assemble WarpText.asm, it will include: "graphics/WarpText.i"
* ------------------------------------------------------------------------
* --------------------------------------------------------------------------
* The following structure, WarpInfo, is used by these four routines:
* InitWarpInfo (Initializes the WarpInfo structure for use)
* GetXY (Returns current cursor position)
* GotoXY (Sets cursor to given position)
* WarpText (Emits text at ~13,500 characters per second)
STRUCTURE WarpInfo,0 ;...the <I> denotes internal use.
APTR wi_TextFont ;Pointer to a TextFont structure.
APTR wi_BitMap ;Pointer to a BitMap structure.
UWORD wi_WhichPlane ;Which bitplane to render into.
UWORD wi_Left ;Left edge of 'window' in char loc's.
UWORD wi_Top ;Top edge of 'window' in char loc's.
UWORD wi_Width ;Width of 'window' in char loc's.
UWORD wi_Height ;Height of 'window' in char loc's.
APTR wi_WindowTop ;<I> Address of top of 'window.'
APTR wi_CurLine ;<I> Address of start of current line.
APTR wi_LastLine ;<I> Address of start of last line.
UWORD wi_CurX ;<I> Current X position.
UWORD wi_LastX ;<I> Maximum X position on a line.
UWORD wi_BPMod ;<I> # total possible chars on a line in bp
UWORD wi_Modulo ;<I> Add this to get to next line.
LABEL wi_SIZE
* --------------------------------------------------------------------------
* The following structure, NewWarpInfo, is used by these three routines:
* SetupFont (Copies font to given 2048 byte array for faster access)
* NewWarp (Emits text at ~30,000 characters per second)
* XORCursor (XOR's a visible cursor to the current xy location)
STRUCTURE NewWarpInfo,0
UWORD nwi_XLoc ;Current X position in char. loc's.
UWORD nwi_YLoc ;Current Y position in char. loc's.
APTR nwi_BitPlane ;Address of bitplane to render text into.
APTR nwi_FontData ;Address of 2048 byte array for font data.
LABEL nwi_SIZE
* ---------------------------- *
* End of "graphics/WarpText.i" *
* ---------------------------- *