Anonymous user
Plot coordinate pairs: Difference between revisions
Added solution for Action!
(Added solution for Action!) |
|||
Line 323:
</pre>
=={{header|Action!}}==
{{libheader|Action! Tool Kit}}
<lang Action!>INCLUDE "D2:REAL.ACT" ;from the Action! Tool Kit
DEFINE PTR="CARD"
DEFINE BUF_SIZE="100"
DEFINE REAL_SIZE="3"
TYPE Settings=[
INT xMin,xMax,xStep,yMin,yMax,yStep
INT xLeft,xRight,yTop,yBottom
INT tickLength]
BYTE ARRAY xs(BUF_SIZE),ys(BUF_SIZE)
BYTE count=[0]
PTR FUNC GetXPtr(BYTE i)
RETURN (xs+3*i)
PTR FUNC GetYPtr(BYTE i)
RETURN (ys+3*i)
PROC AddPoint(CHAR ARRAY xstr,ystr)
REAL POINTER p
p=GetXPtr(count) ValR(xstr,p)
p=GetYPtr(count) ValR(ystr,p)
count==+1
RETURN
PROC InitData()
AddPoint("0.0","2.7")
AddPoint("1.0","2.8")
AddPoint("2.0","31.4")
AddPoint("3.0","38.1")
AddPoint("4.0","58.0")
AddPoint("5.0","76.2")
AddPoint("6.0","100.5")
AddPoint("7.0","130.0")
AddPoint("8.0","149.3")
AddPoint("9.0","180.0")
RETURN
INT FUNC GetXPos(Settings POINTER s INT x)
INT res
res=x*(s.xRight-s.xLeft)/(s.xMax-s.xMin)+s.xLeft
RETURN (res)
INT FUNC GetYPos(Settings POINTER s INT y)
INT res
res=y*(s.yTop-s.yBottom)/(s.yMax-s.yMin)+s.yBottom
RETURN (res)
INT FUNC GetXPosR(Settings POINTER s REAL POINTER x)
REAL nom,denom,div,tmp
INT res
IntToReal(s.xRight-s.xLeft,tmp)
RealMult(tmp,x,nom)
IntToReal(s.xMax-s.xMin,denom)
RealDiv(nom,denom,div)
res=RealToInt(div)+s.xLeft
RETURN (res)
INT FUNC GetYPosR(Settings POINTER s REAL POINTER y)
REAL nom,denom,div,tmp
INT res
IntToReal(s.yBottom-s.yTop,tmp)
RealMult(tmp,y,nom)
IntToReal(s.yMax-s.yMin,denom)
RealDiv(nom,denom,div)
res=-RealToInt(div)+s.yBottom
RETURN (res)
BYTE FUNC AtasciiToInternal(CHAR c)
BYTE c2
c2=c&$7F
IF c2<32 THEN
RETURN (c+64)
ELSEIF c2<96 THEN
RETURN (c-32)
FI
RETURN (c)
PROC CharOut(INT x,y CHAR c)
BYTE i,j,v
PTR addr
addr=$E000+AtasciiToInternal(c)*8;
FOR j=0 TO 7
DO
v=Peek(addr)
i=8
WHILE i>0
DO
IF v&1 THEN
Plot(x+i,y+j)
FI
v=v RSH 1
i==-1
OD
addr==+1
OD
RETURN
PROC TextOut(INT x,y CHAR ARRAY text)
BYTE i
FOR i=1 TO text(0)
DO
CharOut(x,y,text(i))
x==+8
OD
RETURN
PROC DrawAxes(Settings POINTER s)
INT i,x,y
CHAR ARRAY t(10)
Plot(s.xLeft,s.yTop)
DrawTo(s.xLeft,s.yBottom)
DrawTo(s.xRight,s.yBottom)
FOR i=s.xMin TO s.xMax STEP s.xStep
DO
x=GetXPos(s,i)
Plot(x,s.yBottom)
DrawTo(x,s.yBottom+s.tickLength)
StrI(i,t)
TextOut(x-t(0)*4,s.yBottom+s.tickLength+1,t)
OD
FOR i=s.yMin TO s.yMax STEP s.yStep
DO
y=GetYPos(s,i)
Plot(s.xLeft-s.tickLength,y)
DrawTo(s.xLeft,y)
StrI(i,t)
TextOut(s.xLeft-s.tickLength-1-t(0)*8,y-4,t)
OD
RETURN
PROC DrawPoint(INT x,y)
Plot(x-1,y-1) DrawTo(x+1,y-1)
DrawTo(x+1,y+1) DrawTo(x-1,y+1)
DrawTo(x-1,y-1)
RETURN
PROC DrawSeries(Settings POINTER s)
INT i,x,y,prevX,prevY
REAL POINTER p
FOR i=0 TO count-1
DO
p=GetXPtr(i) x=GetXPosR(s,p)
p=GetYPtr(i) y=GetYPosR(s,p)
DrawPoint(x,y)
IF i>0 THEN
Plot(prevX,prevY)
DrawTo(x,y)
FI
prevX=x prevY=y
OD
RETURN
PROC DrawPlot(Settings POINTER s)
DrawAxes(s)
DrawSeries(s)
RETURN
PROC Main()
BYTE CH=$02FC,COLOR1=$02C5,COLOR2=$02C6
Settings s
Graphics(8+16)
Color=1
COLOR1=$0C
COLOR2=$02
InitData()
s.xMin=0 s.xMax=9 s.xStep=1
s.yMin=0 s.yMax=180 s.yStep=20
s.xLeft=30 s.xRight=311 s.yTop=8 s.yBottom=177
s.tickLength=3
DrawPlot(s)
DO UNTIL CH#$FF OD
CH=$FF
RETURN</lang>
{{out}}
[https://gitlab.com/amarok8bit/action-rosetta-code/-/raw/master/images/Plot_coordinate_pairs.png Screenshot from Atari 8-bit computer]
=={{header|Ada}}==
| |||