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Font from a string pattern - help needed

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Font from a string pattern - help needed
grymmjack Offline
a friendly old nerd
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#1
08-26-2023, 10:45 PM (This post was last modified: 08-26-2023, 11:14 PM by grymmjack. Edit Reason: Added comments )
What the hell is wrong with this. I can't figure out why the kerning and x position is messed up.

I can't figure out why the scale of 1 is showing crunchy as if it's out of proportion on x or y.
I can't figure out why I need to kludge the x position to start it with a negative offset in 
F0NT.print

Any help is appreciated!

Code: (Select All)


OPTION _EXPLICIT

OPTION _EXPLICITARRAY



CONST CHARS = 8

CONST COLS  = 9

CONST ROWS  = 9

CONST BPP   = 32



' screen setup

DIM CANVAS AS LONG

CANVAS& = _NEWIMAGE(COLS * 150, ROWS * 100, BPP)

SCREEN CANVAS&

_DEST CANVAS&



' glyph data

DIM GD(CHARS) AS STRING

         GD$(0) = "XXXXXXXXX"

GD$(0) = GD$(0) + ".X......."

GD$(0) = GD$(0) + "..X......"

GD$(0) = GD$(0) + "...X....."

GD$(0) = GD$(0) + "....X...."

GD$(0) = GD$(0) + ".....X..."

GD$(0) = GD$(0) + "......X.."

GD$(0) = GD$(0) + ".......X."

GD$(0) = GD$(0) + "XXXXXXXXX"



         GD$(1) = "XXXXXXXXX"

GD$(1) = GD$(1) + "....X...."

GD$(1) = GD$(1) + "....X...."

GD$(1) = GD$(1) + "....X...."

GD$(1) = GD$(1) + "....X...."

GD$(1) = GD$(1) + "....X...."

GD$(1) = GD$(1) + "....X...."

GD$(1) = GD$(1) + "....X...."

GD$(1) = GD$(1) + "....X...."



         GD$(2) = "....X...."

GD$(2) = GD$(2) + "...X.X..."

GD$(2) = GD$(2) + "..X...X.."

GD$(2) = GD$(2) + ".X.....X."

GD$(2) = GD$(2) + "XXXXXXXXX"

GD$(2) = GD$(2) + "X.......X"

GD$(2) = GD$(2) + "X.......X"

GD$(2) = GD$(2) + "X.......X"

GD$(2) = GD$(2) + "X.......X"



         GD$(3) = "XXXXXXXXX"

GD$(3) = GD$(3) + "X......X."

GD$(3) = GD$(3) + "X.....X.."

GD$(3) = GD$(3) + "X....X..."

GD$(3) = GD$(3) + "X...X...."

GD$(3) = GD$(3) + "X..X....."

GD$(3) = GD$(3) + "X.X......"

GD$(3) = GD$(3) + "XX......."

GD$(3) = GD$(3) + "XXXXXXXXX"



         GD$(4) = "XXXXXXXXX"

GD$(4) = GD$(4) + ".X......."

GD$(4) = GD$(4) + "..X......"

GD$(4) = GD$(4) + "...XXXXXX"

GD$(4) = GD$(4) + "..X......"

GD$(4) = GD$(4) + ".X......."

GD$(4) = GD$(4) + "X........"

GD$(4) = GD$(4) + "X........"

GD$(4) = GD$(4) + "X........"



         GD$(5) = "XXXXXXXXX"

GD$(5) = GD$(5) + "....X...."

GD$(5) = GD$(5) + "....X...."

GD$(5) = GD$(5) + "....X...."

GD$(5) = GD$(5) + "....X...."

GD$(5) = GD$(5) + "....X...."

GD$(5) = GD$(5) + "....X...."

GD$(5) = GD$(5) + "....X...."

GD$(5) = GD$(5) + "XXXXXXXXX"



         GD$(6) = "XXXXXXXXX"

GD$(6) = GD$(6) + "X........"

GD$(6) = GD$(6) + "X........"

GD$(6) = GD$(6) + "X..XXXXXX"

GD$(6) = GD$(6) + "X...X...."

GD$(6) = GD$(6) + "X....X..."

GD$(6) = GD$(6) + "X.....X.."

GD$(6) = GD$(6) + "X......X."

GD$(6) = GD$(6) + "XXXXXXXXX"



         GD$(7) = "X.......X"

GD$(7) = GD$(7) + "X.......X"

GD$(7) = GD$(7) + "X.......X"

GD$(7) = GD$(7) + "X.......X"

GD$(7) = GD$(7) + "XXXXXXXXX"

GD$(7) = GD$(7) + "X.......X"

GD$(7) = GD$(7) + "X.......X"

GD$(7) = GD$(7) + "X.......X"

GD$(7) = GD$(7) + "X.......X"



         GD$(8) = "XXXXXXXXX"

GD$(8) = GD$(8) + ".X......."

GD$(8) = GD$(8) + "..X......"

GD$(8) = GD$(8) + "...X....."

GD$(8) = GD$(8) + "....XXXXX"

GD$(8) = GD$(8) + "...X....."

GD$(8) = GD$(8) + "..X......"

GD$(8) = GD$(8) + ".X......."

GD$(8) = GD$(8) + "XXXXXXXXX"



' F0NT UDT

TYPE F0NT

    glyph_width AS INTEGER

    glyph_height AS INTEGER

    char AS STRING

    img AS LONG

END TYPE

DIM STARFIGHTER_FONT(CHARS) AS F0NT



' create the glyph images from the glyph data

DIM kolor AS LONG

kolor& = _RGB32(&HFF, &HFF, &HFF)

CALL F0NT.make_glyph("S", STARFIGHTER_FONT(0), GD$(0), kolor&)

CALL F0NT.make_glyph("T", STARFIGHTER_FONT(1), GD$(1), kolor&)

CALL F0NT.make_glyph("A", STARFIGHTER_FONT(2), GD$(2), kolor&)

CALL F0NT.make_glyph("R", STARFIGHTER_FONT(3), GD$(3), kolor&)

CALL F0NT.make_glyph("F", STARFIGHTER_FONT(4), GD$(4), kolor&)

CALL F0NT.make_glyph("I", STARFIGHTER_FONT(5), GD$(5), kolor&)

CALL F0NT.make_glyph("G", STARFIGHTER_FONT(6), GD$(6), kolor&)

CALL F0NT.make_glyph("H", STARFIGHTER_FONT(7), GD$(7), kolor&)

CALL F0NT.make_glyph("E", STARFIGHTER_FONT(8), GD$(8), kolor&)



' prepare for output

_DEST CANVAS&

COLOR 0, _RGB32(&H00, &H00, &HAA)

CLS



' test 1

DIM AS INTEGER x, y, scale, kerning, spacing

x% = 50 : y% = 50 : scale% = 1 : kerning% = 2 : spacing% = 0

CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, kerning%, spacing%)



' test 2

x% = 50 : y% = 150 : scale% = 4 : kerning% = 0 : spacing% = 4

CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, kerning%, spacing%)



' test 3

x% = 0 : y% = 450 : scale% = 7 : kerning% = 0 : spacing% = 1

CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, kerning%, spacing%)



' test 4

x% = 0 : y% = 600 : scale% = 8 : kerning% = -5 : spacing% = 0

CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, kerning%, spacing%)

CALL F0NT.free(STARFIGHTER_FONT())







''

' Free the font glyph images from memory

'

' @param F0NT ARRAY f()

' 

SUB F0NT.free(f() AS F0NT)

    DIM AS INTEGER i, lb, ub

    lb% = LBOUND(f) : ub% = UBOUND(f)

    FOR i% = lb% TO ub%

        _FREEIMAGE f(i%).img&

    NEXT i%

END SUB





''

' Make a glyph from glyph data and store it in F0NT

'

' @param STRING c$ glyph character identifier

' @param F0NT ARRAY f() 

' @param STRING ARRAY glyph_data$() 

' @param LONG kolor& to make glyphs

' 

SUB F0NT.make_glyph(c$, f AS F0NT, glyph_data$, kolor&)

    DIM AS INTEGER y, x, p, dbg

    DIM s AS STRING

    DIM old_dest AS LONG

    ' dbg% = -1

    f.char$ = c$

    IF dbg% THEN PRINT c$

    f.img&  = _NEWIMAGE(COLS, ROWS, BPP)

    old_dest& = _DEST : _DEST f.img&

    _CLEARCOLOR _RGB32(&H00, &H00, &H00)

    FOR y% = 0 TO ROWS

        FOR x% = 0 TO COLS

            p% = (y% * COLS) + x% + 1

            s$ = MID$(glyph_data$, p%, 1)

            IF dbg% THEN

                _DEST old_dest& : PRINT s$; : _DEST f.img&

            END IF

            IF s$ <> "." THEN

                CALL PSET((x%, y%), kolor&)

            END IF            

        NEXT x%

        IF dbg% THEN

            _DEST old_dest& : PRINT : _DEST f.img&

        END IF

    NEXT y%

    IF dbg% THEN SLEEP

    _DEST old_dest&

END SUB





''

' Get a glyph image from a F0NT by character identifier

'

' @param STRING c$ character identifier of glyph to get

' @param F0NT ARRAY f()

' @return LONG image handle for glyph image of F0NT

'

FUNCTION F0NT.get_glyph&(c$, f() AS F0NT)

    DIM AS INTEGER i, lb, ub

    lb% = LBOUND(f) : ub% = UBOUND(f)

    FOR i% = lb% TO ub%

        IF f(i%).char$ = c$ THEN

            F0NT.get_glyph& = f(i%).img&

            EXIT FUNCTION

        END IF

    NEXT i%

END FUNCTION





''

' Print something using a F0NT

'

' @param STRING s$ what to print

' @param F0NT ARRAY f()

' @param INTEGER x% position

' @param INTEGER y% position

' @param INTEGER scale% size multiplier

' @param INTEGER kerning% scaling space between characters

' @param INTEGER spacing% spaces between characters

'

SUB F0NT.print(s$, f() AS F0NT, x%, y%, scale%, kerning%, spacing%)

    DIM AS INTEGER i, l, dx1, dy1, dx2, dy2, orig_x

    DIM c AS STRING

    DIM g AS LONG

    l% = LEN(s$)

    orig_x% = x%

    x% = -scale% * (COLS + 1) + orig_x%

    PSET (x%, y%)

    FOR i% = 0 TO l%

        c$ = MID$(s$, i%, 1)

        g& = F0NT.get_glyph(c$, f()) 

        _SOURCE g&

        dx1%  = x% + ((i% * (COLS + kerning%) * scale%)) + (i% * (spacing% * COLS))

        dy1%  = y%

        dx2%  = (COLS * scale%) + dx1%

        dy2%  = (ROWS * scale%) + dy1%

        _PUTIMAGE (dx1%, dy1%)-(dx2%, dy2%)

    NEXT i%

END SUB


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Font from a string pattern - help needed - by grymmjack - 08-26-2023, 10:45 PM



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