177 lines
8.7 KiB
Text
177 lines
8.7 KiB
Text
Module PPMbinaryP6 {
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If Version<9.4 then 1000
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If Version=9.4 Then if Revision<19 then 1000
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Module Checkit {
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Function Bitmap {
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def x as long, y as long
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If match("NN") then {
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Read x, y
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} else.if Match("N") Then {
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E$="Not a ppm file"
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Read f as long
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buffer whitespace as byte
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if not Eof(f) then {
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get #f, whitespace : iF eof(f) then Error E$
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P6$=eval$(whitespace)
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get #f, whitespace : iF eof(f) then Error E$
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P6$+=eval$(whitespace)
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def boolean getW=true, getH=true, getV=true
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def long v
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\\ str$("P6") has 2 bytes. "P6" has 4 bytes
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If p6$=str$("P6") Then {
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do {
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get #f, whitespace
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if Eval$(whitespace)=str$("#") then {
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do {
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iF eof(f) then Error E$
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get #f, whitespace
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} until eval(whitespace)=10
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} else {
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select case eval(whitespace)
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case 32, 9, 13, 10
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{
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if getW and x<>0 then {
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getW=false
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} else.if getH and y<>0 then {
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getH=false
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} else.if getV and v<>0 then {
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getV=false
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}
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}
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case 48 to 57
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{
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if getW then {
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x*=10
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x+=eval(whitespace, 0)-48
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} else.if getH then {
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y*=10
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y+=eval(whitespace, 0)-48
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} else.if getV then {
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v*=10
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v+=eval(whitespace, 0)-48
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}
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}
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End Select
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}
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iF eof(f) then Error E$
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} until getV=false
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} else Error "Not a P6 ppm"
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}
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} else Error "No proper arguments"
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if x<1 or y<1 then Error "Wrong dimensions"
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structure rgb {
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red as byte
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green as byte
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blue as byte
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}
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m=len(rgb)*x mod 4
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if m>0 then m=4-m ' add some bytes to raster line
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m+=len(rgb) *x
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Structure rasterline {
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{
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pad as byte*m
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}
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\\ union pad+hline
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hline as rgb*x
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}
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\\ we use union linesB and lines
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\\ so we can address linesb as bytes
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Structure Raster {
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magic as integer*4
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w as integer*4
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h as integer*4
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{
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linesB as byte*len(rasterline)*y
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}
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lines as rasterline*y
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}
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Buffer Clear Image1 as Raster
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\\ 24 chars as header to be used from bitmap render build in functions
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Return Image1, 0!magic:="cDIB", 0!w:=Hex$(x,2), 0!h:=Hex$(y, 2)
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\\ fill white (all 255)
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\\ Str$(string) convert to ascii, so we get all characters from words width to byte width
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if not valid(f) then Return Image1, 0!lines:=Str$(String$(chrcode$(255), Len(rasterline)*y))
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Buffer Clear Pad as Byte*4
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SetPixel=Lambda Image1, Pad,aLines=Len(Raster)-Len(Rasterline), blines=-Len(Rasterline) (x, y, c) ->{
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where=alines+3*x+blines*y
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if c>0 then c=color(c)
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c-!
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Return Pad, 0:=c as long
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Return Image1, 0!where:=Eval(Pad, 2) as byte, 0!where+1:=Eval(Pad, 1) as byte, 0!where+2:=Eval(Pad, 0) as byte
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}
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GetPixel=Lambda Image1,aLines=Len(Raster)-Len(Rasterline), blines=-Len(Rasterline) (x,y) ->{
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where=alines+3*x+blines*y
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=color(Eval(image1, where+2 as byte), Eval(image1, where+1 as byte), Eval(image1, where as byte))
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}
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StrDib$=Lambda$ Image1, Raster -> {
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=Eval$(Image1, 0, Len(Raster))
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}
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CopyImage=Lambda Image1 (image$) -> {
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if left$(image$,12)=Eval$(Image1, 0, 24 ) Then {
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Return Image1, 0:=Image$
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} Else Error "Can't Copy Image"
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}
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Export2File=Lambda Image1, x, y (f) -> {
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\\ use this between open and close
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Print #f, "P6";chr$(10);
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Print #f,"# Created using M2000 Interpreter";chr$(10);
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Print #f, x;" ";y;" 255";chr$(10);
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x2=x-1
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where=0
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Buffer pad as byte*3
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For y1= 0 to y-1 {
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For x1=0 to x2 {
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\\ use linesB which is array of bytes
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Return pad, 0:=eval$(image1, 0!linesB!where, 3)
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Push Eval(pad, 2)
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Return pad, 2:=Eval(pad, 0), 0:=Number
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Put #f, pad
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where+=3
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}
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m=where mod 4
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if m<>0 then where+=4-m
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}
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}
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if valid(F) then {
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x0=x-1
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where=0
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Buffer Pad1 as byte*3
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For y1=y-1 to 0 {
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For x1=0 to x0 {
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Get #f, Pad1 ' Read binary
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\\ reverse rgb
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Push Eval(pad1, 2)
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Return pad1, 2:=Eval(pad1, 0), 0:=Number
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Return Image1, 0!linesB!where:=Eval$(Pad1)
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where+=3
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}
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m=where mod 4
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if m<>0 then where+=4-m
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}
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}
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Group Bitmap {
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SetPixel=SetPixel
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GetPixel=GetPixel
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Image$=StrDib$
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Copy=CopyImage
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ToFile=Export2File
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}
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=Bitmap
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}
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A=Bitmap(10, 10)
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Call A.SetPixel(5,5, color(128,0,255))
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Open "A.PPM" for Output as #F
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Call A.ToFile(F)
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Close #f
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Print "Saved"
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Open "A.PPM" for Input as #F
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C=Bitmap(f)
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Copy 400*twipsx,200*twipsy use C.Image$()
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Close #f
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}
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Checkit
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End
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1000 Error "Need Version 9.4, Revision 19 or higher"
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}
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PPMbinaryP6
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