FreeBasic: Grafik Beispiel

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Natürlich sollte man bei ernsten Projekten Oberflächen auf keinen Fall mit den Grafikbefehlen erstellen, aber für den Wissensstand, den du aktuell haben solltest, ist das genau das Richtige. Du kannst es zur Übung auch noch erweitern. Mit "s" speichert man ab, das Bild landet im Ordner der .exe-Datei. Mit "e" wird das Programm beendet. Viel Spaß damit :). Auf älteren Computer wird es nur langsam bis gar nicht laufen. In diesem Fall ändere in Zeile 103 "sleep 10" zu "sleep 100" um. Es ist sicher nicht sauber programmiert, aber es soll ja auch nur zeigen, was die Grafikbefehle alles können.

dim xrand as integer=640
dim yrand as integer=480
WINDOWTITLE "Pset Bitmap"
screen 19,24

Line (0,0)-(xrand+160,yrand+120),RGB(255,255,255),bf

  dim Taste2 as string
  dim Mauspos as string
  dim xpos as string
  dim ypos as string
  dim Radius as integer=50
  dim key as string
  dim Pinsel as integer
  dim x1 as integer 
  dim x2 as integer
  dim y1 as integer
  dim y2 as integer
  dim Taste as integer
  dim Rad as integer
  dim x as integer
  dim y as integer
  dim b1 as string
  dim a1 as string
  dim c1 as string
  dim b2 as string
  dim a2 as string
  dim c2 as string
  dim b3 as string
  dim a3 as string
  dim c3 as string
  dim Farbe3 as integer
  dim Farbe2 as integer
  dim Farbe1 as integer
  dim Farbe4 as integer
  dim Farbe5 as integer
  dim Farbe6 as integer
  dim Farbe7 as integer
  dim Farbe8 as integer
  dim Farbe9 as integer
  dim Rot as integer=0
  dim Blau as integer=0
  dim Gruen as integer=0
  Dim As Integer breit,hoch
  Dim bild As Any Ptr        
  dim Modus as integer=1
  dim key2 as string
  dim Funktion as string
  dim Bildname as string="neues_Bild.bmp"
  dim Bildzwischenspeicher as string
  bild=IMAGECREATE(xrand,yrand,RGB(255,255,255))
  
  
  line(xrand+1,0)-(xrand+1,yrand),2
  line(xrand+2,0)-(xrand+2,yrand+1),2
  line(0,yrand+1)-(xrand+1,yrand+1),2
  line(0,yrand+2)-(xrand+2,yrand+2),2
  
  line(9,yrand+19)-(101,yrand+111),2,b
  line(10,yrand+20)-(100,yrand+110),2,bf
  
  line(110,yrand+20)-(245,yrand+50),2,b
  line(110,yrand+35)-(245,yrand+35),2
  line(125,yrand+20)-(125,yrand+50),2
  line(140,yrand+20)-(140,yrand+50),2
  line(155,yrand+20)-(155,yrand+50),2
  line(170,yrand+20)-(170,yrand+50),2
  line(185,yrand+20)-(185,yrand+50),2
  line(200,yrand+20)-(200,yrand+50),2
  line(215,yrand+20)-(215,yrand+50),2
  line(230,yrand+20)-(230,yrand+50),2
  line(245,yrand+20)-(245,yrand+50),2
  line(111,yrand+36)-(124,yrand+49),RGB(255,255,255),bf
  line(111,yrand+21)-(124,yrand+34),RGB(0,0,0),bf
  line(126,yrand+36)-(139,yrand+49),RGB(200,200,200),bf
  line(126,yrand+21)-(139,yrand+34),RGB(100,100,100),bf
  line(141,yrand+21)-(154,yrand+34),RGB(255,0,0),bf
  line(141,yrand+36)-(154,yrand+49),RGB(255,60,80),bf
  line(156,yrand+21)-(169,yrand+34),RGB(0,255,0),bf
  line(156,yrand+36)-(169,yrand+49),RGB(154,255,0),bf
  line(171,yrand+21)-(184,yrand+34),RGB(0,0,255),bf
  line(171,yrand+36)-(184,yrand+49),RGB(0,168,255),bf
  line(186,yrand+21)-(199,yrand+34),RGB(255,255,0),bf
  line(186,yrand+36)-(199,yrand+49),RGB(255,255,150),bf
  line(201,yrand+21)-(214,yrand+34),RGB(255,170,0),bf
  line(201,yrand+36)-(214,yrand+49),RGB(255,190,200),bf
  line(216,yrand+21)-(229,yrand+34),RGB(255,0,255),bf
  line(216,yrand+36)-(229,yrand+49),RGB(255,120,255),bf
  line(231,yrand+21)-(244,yrand+34),RGB(0,255,255),bf
  line(231,yrand+36)-(244,yrand+49),RGB(150,255,255),bf
  
  
  line(260,yrand+20)-(400,yrand+110),2,b
  
  circle(270,yrand+30),5,2,,,1
  circle(285,yrand+35),10,2,,,1
  circle(310,yrand+40),15,2,,,1
  circle(345,yrand+45),20,2,,,1
  
do

    do
       sleep 10
       getmouse x,y,Rad,Taste
       key2 = inkey
       line(xrand,yrand)-(xrand+50,yrand+30),RGB(255,255,255),bf
       xpos=str(x)
       ypos=str(y)
       mauspos="x="+xpos
       draw string (xrand,yrand),mauspos,2
       mauspos="y="+ypos
       draw string (xrand,yrand+12),mauspos,2
       
       line(xrand+2,0)-(xrand+2,yrand+1),2
       line(0,yrand+1)-(xrand+1,yrand+1),2
       line(0,yrand+2)-(xrand+2,yrand+2),2
       
       line(xrand+5,10)-(xrand+35,40),RGB(255,255,255),bf
       line(xrand+5,10)-(xrand+35,40),2,b
       circle(xrand+20,25),12,2,,,1
       
       line(xrand+45,10)-(xrand+75,40),RGB(255,255,255),bf
       line(xrand+45,10)-(xrand+75,40),2,b
       line(xrand+50,35)-(xrand+70,15),2
       
       line(xrand+85,10)-(xrand+115,40),2,b
       circle(xrand+100,25),15,RGB(255,0,0)
       circle(xrand+100,25),12,RGB(0,255,0),,,1
       circle(xrand+100,25),9,RGB(0,0,255),,,1
       
       line(xrand+125,10)-(xrand+155,40),RGB(255,255,255),bf
       line(xrand+125,10)-(xrand+155,40),2,b
       line(xrand+130,15)-(xrand+150,35),2,b
       line(xrand+131,16)-(xrand+149,34),2,b
       
       if x>xrand+5 and x<xrand+35 and y>10 and y<40 then
           line(xrand+5,10)-(xrand+35,40),RGB(255,217,15),bf
           line(xrand+5,10)-(xrand+35,40),2,b
           circle(xrand+20,25),12,2,,,1

       elseif x>xrand+45 and x<xrand+75 and y>10 and y<40 then
           line(xrand+45,10)-(xrand+75,40),RGB(255,217,15),bf
           line(xrand+45,10)-(xrand+75,40),2,b
           line(xrand+50,35)-(xrand+70,15),2
           
       elseif x>xrand+85 and x<xrand+115 and y>10 and y<40 then
           line(xrand+85,10)-(xrand+115,40),RGB(255,217,15),b
           circle(xrand+100,25),15,RGB(255,0,0)
           circle(xrand+100,25),12,RGB(0,255,0),,,1
           circle(xrand+100,25),9,RGB(0,0,255),,,1
           
       elseif x>xrand+125 and x<xrand+155 and y>10 and y<40 then
           line(xrand+125,10)-(xrand+155,40),RGB(255,217,15),bf
           line(xrand+125,10)-(xrand+155,40),2,b
           line(xrand+130,15)-(xrand+150,35),2,b
           line(xrand+131,16)-(xrand+149,34),2,b
             
       end if 
       
       if Taste=1 and x>xrand+5 and x<xrand+35 and y>10 and y<40 then
           line(xrand+5,10)-(xrand+35,40),RGB(255,0,0),bf
           line(xrand+5,10)-(xrand+35,40),2,b
           circle(xrand+20,25),12,2,,,1
           Modus=1 
       elseif Taste=1 and x>xrand+45 and x<xrand+75 and y>10 and y<40 then 
           line(xrand+45,10)-(xrand+75,40),RGB(255,0,0),bf
           line(xrand+45,10)-(xrand+75,40),2,b
           line(xrand+50,35)-(xrand+70,15),2
           Modus=2
           
        elseif Taste=1 and x>xrand+85 and x<xrand+115 and yrand>10 and y<40 then
            circle(xrand+100,25),15,RGB(255,0,0),,,1
            circle(xrand+100,25),12,RGB(0,255,0),,,1
            circle(xrand+100,25),9,RGB(0,0,255),,,1
            line(xrand+85,10)-(xrand+115,40),RGB(255,0,0),b
            Modus=5
        elseif Taste=1 and 110 and 245 and y>yrand+20 and y<yrand+50 then
            if Taste=1 and x>111 and x<124 and y>yrand+21 and y<yrand+34 then
                Rot=0
                Blau=0
                Gruen=0
            elseif Taste=1 and x>126 and x<139 and y>yrand+21 and y<yrand+34 then
                Rot=100
                Blau=100
                Gruen=100
            elseif Taste=1 and x>141 and x<154 and y>yrand+21 and y<yrand+34 then
                Rot=255
                Blau=0
                Gruen=0
            elseif Taste=1 and x>156 and x<169 and y>yrand+21 and y<yrand+34 then
                Rot=0
                Blau=0
                Gruen=255
            elseif Taste=1 and x>171 and x<184 and y>yrand+21 and y<yrand+34 then
                Rot=0
                Gruen=0
                Blau=255
            elseif Taste=1 and x>186 and x<199 and y>yrand+21 and y<yrand+34 then
                Rot=255
                Gruen=255
                Blau=0
            elseif Taste=1 and x>201 and x<214 and y>yrand+21 and y<yrand+34 then
                Rot=255
                Gruen=170
                Blau=0
            elseif Taste=1 and x>216 and x<229 and y>yrand+21 and y<yrand+34 then
                Rot=255
                Gruen=0
                Blau=255
            elseif Taste=1 and x>231 and x<244 and y>yrand+21 and y<yrand+34 then
                Rot=0
                Gruen=255
                Blau=255
            elseif Taste=1 and x>111 and x<124 and y>yrand+36 and y<yrand+49 then
                Rot=255
                Blau=255
                Gruen=255
            elseif Taste=1 and x>126 and x<139 and y>yrand+36 and y<yrand+49 then
                Rot=200
                Blau=200
                Gruen=200
            elseif Taste=1 and x>141 and x<154 and y>yrand+36 and y<yrand+49 then
                Rot=255
                Blau=60 
                Gruen=80
            elseif Taste=1 and x>156 and x<169 and y>yrand+36 and y<yrand+49 then
                Rot=154
                Blau=255
                Gruen=0
            elseif Taste=1 and x>171 and x<184 and y>yrand+36 and y<yrand+49 then
                Rot=0
                Gruen=168
                Blau=255
            elseif Taste=1 and x>186 and x<199 and y>yrand+36 and y<yrand+49 then
                Rot=255
                Gruen=255
                Blau=150
            elseif Taste=1 and x>201 and x<214 and y>yrand+36 and y<yrand+49 then
                Rot=255
                Gruen=190
                Blau=200
            elseif Taste=1 and x>216 and x<229 and y>yrand+36 and y<yrand+49 then
                Rot=255
                Gruen=120
                Blau=255
            elseif Taste=1 and x>231 and x<244 and y>yrand+36 and y<yrand+49 then
                Rot=150
                Gruen=255
                Blau=255
            end if
            
            line(9,yrand+19)-(101,yrand+111),2,b
            line(10,yrand+20)-(100,yrand+110),RGB(Rot,Gruen,Blau),bf
        elseif Taste=1 and x>xrand+125 and x<xrand+155 and y>10 and y<40 then
            line(xrand+125,10)-(xrand+155,40),RGB(255,0,0),bf
            line(xrand+125,10)-(xrand+155,40),2,b
            line(xrand+130,15)-(xrand+150,35),2,b
            line(xrand+131,16)-(xrand+149,34),2,b
            Modus=12
       end if
       
       if key2="s" then Modus=0
       if key2="e" then Modus=4
       
       if Modus=1 then 
           line(xrand+5,10)-(xrand+35,40),RGB(255,0,0),bf
           line(xrand+5,10)-(xrand+35,40),2,b
           circle(xrand+20,25),12,2,,,1
           if Radius=25 then
               line(265,yrand+25)-(275,yrand+35),2,b
           end if
       elseif Modus=2 then
           line(xrand+45,10)-(xrand+75,40),RGB(255,0,0),bf
           line(xrand+45,10)-(xrand+75,40),2,b
           line(xrand+50,35)-(xrand+70,15),2
       elseif Modus=5 then
           circle(xrand+100,25),15,RGB(255,0,0),,,1
           circle(xrand+100,25),12,RGB(0,255,0),,,1
           circle(xrand+100,25),9,RGB(0,0,255),,,1
           line(xrand+85,10)-(xrand+115,40),RGB(255,0,0),b
       elseif Modus=12 then
           line(xrand+125,10)-(xrand+155,40),RGB(255,0,0),bf
           line(xrand+125,10)-(xrand+155,40),2,b
           line(xrand+130,15)-(xrand+150,35),2,b
           line(xrand+131,16)-(xrand+149,34),2,b
           
       end if

    loop until Taste=1 or key2<>""
   












if Modus=1 then
    
    line(xrand+5,10)-(xrand+35,40),RGB(255,0,0),bf
    line(xrand+5,10)-(xrand+35,40),2,b
    circle(xrand+20,25),12,2,,,1
    do
        line(261,yrand+21)-(399,yrand+109),RGB(255,255,255),bf
        circle(270,yrand+30),5,2,,,1
        circle(285,yrand+35),10,2,,,1
        circle(310,yrand+40),15,2,,,1
        circle(345,yrand+45),20,2,,,1
        if Radius=25 then
               line(265,yrand+25)-(275,yrand+35),2,b
        end if
    getmouse x,y,Rad,Taste
    if Taste=1 and x<275 and x>265 and y>yrand+25 and y<yrand+35 then
        Radius=25
        line(265,yrand+25)-(275,yrand+35),2,b
    elseif Taste=1 and x<295 and x>275 and y>yrand+25 and y<yrand+45 then
        Radius=50
    elseif Taste=1 and x<325 and x>295 and y>yrand+25 and y<yrand+55 then
        Radius=75
    end if
    
    loop Until Taste=1
     
          x1 = x
          y1 = y
       
if x1<xrand and y1<yrand then 
circle bild,(x1,y1),Radius,RGB(Rot,Gruen,Blau),,,1
circle (x1,y1),Radius,RGB(Rot,Gruen,Blau) ,,,1
end if


elseif Modus=2 then
    line(xrand+45,10)-(xrand+75,40),RGB(255,0,0),bf
    line(xrand+45,10)-(xrand+75,40),2,b
    line(xrand+50,35)-(xrand+70,15),2
    do
        line(261,yrand+21)-(399,yrand+109),RGB(255,255,255),bf
        getmouse x,y,Rad,Taste
    loop Until Taste=1
     
          x1 = x
          y1 = y
       do 
           getmouse x,y,Rad,Taste
     loop Until Taste=0
     x2=x
     y2=y
    
if x1<xrand and y1<yrand then
    if x2<xrand and y2<yrand then
        Line bild,(x1,y1)-(x2,y2),RGB(Rot,Gruen,Blau)
        Line (x1,y1)-(x2,y2),RGB(Rot,Gruen,Blau)
    end if
end if


elseif Modus=4 then end

elseif Modus=5 then
    line(261,yrand+21)-(399,yrand+109),RGB(255,255,255),bf
    circle(xrand+100,25),15,RGB(255,0,0),,,1
    circle(xrand+100,25),12,RGB(0,255,0),,,1
    circle(xrand+100,25),9,RGB(0,0,255),,,1
    line(xrand+85,10)-(xrand+115,40),RGB(255,0,0),b
do
        a1=inkey
        sleep 500
        loop until a1<>""
    do
        b1=inkey
        sleep 500
    loop until b1<>""
    do
        c1=inkey
        sleep 500
    loop until c1<>""
    do
        a2=inkey
        sleep 500
    loop until a2<>""
    do
        b2=inkey
        sleep 500
    loop until b2<>""
    do
        c2=inkey
        sleep 500
    loop until c2<>""
    do
        a3=inkey
        sleep 500
    loop until a3<>""
    do
        b3=inkey
        sleep 500
    loop until b3<>""
    do
        c3=inkey
        sleep 500
    loop until c3<>""
    Farbe1=val(a1)*100
    Farbe2=val(b1)*10
    Farbe3=val(c1)
    Farbe4=val(a2)*100
    Farbe5=val(b2)*10
    Farbe6=val(c2)
    Farbe7=val(a3)*100
    Farbe8=val(b3)*10
    Farbe9=val(c3)
    Rot=Farbe1+Farbe2+Farbe3
    Gruen=Farbe4+Farbe5+Farbe6
    Blau=Farbe7+Farbe8+Farbe9
    if Rot > 255 or Gruen > 255 or Blau > 255 then
        Blau=0
        Rot=0
        Gruen=0
    end if
    line(9,yrand+19)-(101,yrand+111),2,b
    line(10,yrand+20)-(100,yrand+110),RGB(Rot,Gruen,Blau),bf
    Modus=1
elseif Modus=0 then 
     
    Bsave Bildname, bild
    
    
elseif Modus=9 then
    Bildname=""
    do
       Bildzwischenspeicher=inkey
       Bildname=Bildname+Bildzwischenspeicher
   loop until Bildzwischenspeicher="p"
elseif Modus=8 then
    
    do
        getmouse x,y,Rad,Taste
    loop until Taste=1 or key<>""
    
    
    
    if Pinsel=1 then
    do
        getmouse x,y,Rad,Taste
    loop until Taste=1
    
    Pset (x,y),RGB(Rot,Gruen,Blau)
    Pset (x+1,y),RGB(Rot,Gruen,Blau)
    Pset (x,y+1),RGB(Rot,Gruen,Blau)
    Pset (x+1,y+1),RGB(Rot,Gruen,Blau)
    Pset (x-1,y),RGB(Rot,Gruen,Blau)
    Pset (x,y-1),RGB(Rot,Gruen,Blau)
    Pset (x-1,y-1),RGB(Rot,Gruen,Blau)
    
    Pset bild,(x,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x+1,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x,y+1),RGB(Rot,Gruen,Blau)
    Pset bild,(x+1,y+1),RGB(Rot,Gruen,Blau)
    Pset bild,(x-1,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x,y-1),RGB(Rot,Gruen,Blau)
    Pset bild,(x-1,y-1),RGB(Rot,Gruen,Blau)
    
    elseif Pinsel=2 then
    do
        getmouse x,y,Rad,Taste
    loop until Taste=1
    Pset (x,y),RGB(Rot,Gruen,Blau)
    Pset (x+1,y),RGB(Rot,Gruen,Blau)
    Pset (x,y+1),RGB(Rot,Gruen,Blau)
    Pset (x+1,y+1),RGB(Rot,Gruen,Blau)
    Pset (x-1,y),RGB(Rot,Gruen,Blau)
    Pset (x,y-1),RGB(Rot,Gruen,Blau)
    Pset (x-1,y-1),RGB(Rot,Gruen,Blau)
    Pset (x+2,y),RGB(Rot,Gruen,Blau)
    Pset (x,y+2),RGB(Rot,Gruen,Blau)
    Pset (x+2,y+2),RGB(Rot,Gruen,Blau)
    Pset (x-2,y),RGB(Rot,Gruen,Blau)
    Pset (x-2,y-2),RGB(Rot,Gruen,Blau)
    Pset (x,y-2),RGB(Rot,Gruen,Blau)
    
    Pset bild,(x,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x+1,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x,y+1),RGB(Rot,Gruen,Blau)
    Pset bild,(x+1,y+1),RGB(Rot,Gruen,Blau)
    Pset bild,(x-1,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x,y-1),RGB(Rot,Gruen,Blau)
    Pset bild,(x-1,y-1),RGB(Rot,Gruen,Blau)
    Pset bild,(x+2,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x,y+2),RGB(Rot,Gruen,Blau)
    Pset bild,(x+2,y+2),RGB(Rot,Gruen,Blau)
    Pset bild,(x-2,y),RGB(Rot,Gruen,Blau)
    Pset bild,(x-2,y-2),RGB(Rot,Gruen,Blau)
    Pset bild,(x,y-2),RGB(Rot,Gruen,Blau)
    
elseif Pinsel=3 then 
    do
        getmouse x,y,Rad,Taste
    loop until Taste=1
    line(x-5,y+5)-(x+5,y-5),RGB(Rot,Gruen,Blau),bf
    line bild,(x-5,y+5)-(x+5,y-5),RGB(Rot,Gruen,Blau),bf
    
end if
elseif Modus=10 then
    do
        key=inkey
    loop until key<>""
    if key="1" then 
        Pinsel=1
    elseif key="s" then 
    Pinsel=2
    elseif key="2" then 
    Pinsel=3
    end if
key=""
elseif Modus=11 then
    do
        getmouse x,y,Rad,Taste
    loop until Taste=1
    line(x-5,y+5)-(x+5,y-5),RGB(255,255,255),bf
    line bild,(x-5,y+5)-(x+5,y-5),RGB(255,255,255),bf
    
elseif Modus=12 then
    do
          line(261,yrand+21)-(399,yrand+109),RGB(255,255,255),bf
          getmouse x,y,Rad,Taste
    loop Until Taste=1
     
          x1 = x
          y1 = y
    do 
           getmouse x,y,Rad,Taste
    loop Until Taste=0
     x2=x
     y2=y
if x1<xrand and y1<yrand and x2<xrand and y2<yrand then    
Line (x1,y1)-(x2,y2),RGB(Rot,Gruen,Blau),b
Line bild,(x1,y1)-(x2,y2),RGB(Rot,Gruen,Blau),b
end if

elseif Modus=13 then
    do
    getmouse x,y,Rad,Taste
     loop Until Taste=1
     
          x1 = x
          y1 = y
       do 
           getmouse x,y,Rad,Taste
     loop Until Taste=0
     x2=x
     y2=y
    
Line (x1,y1)-(x2,y2),RGB(Rot,Gruen,Blau),bf
Line bild,(x1,y1)-(x2,y2),RGB(Rot,Gruen,Blau),bf
end if
    

LOOP

Dieser Quellcode wurde von Stueber am 22.03.2009 mit der Freebasic Version 0.20b getestet.