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HDR3D.PAS
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Pascal/Delphi Source File
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1993-10-07
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3KB
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96 lines
(******************************************************************************
* hdr3d *
* This unit includes the headers needed for 3D manipulation .. *
******************************************************************************)
unit hdr3d;
interface
const
version3dLib = '2.0';
const
MaxPoints = 20;
MaxLines = 50;
maxObjects = 9; {size of object table}
maxNest = 10; {size of loop table of interpreter}
const ScreenWidth = 1000;
HalfWidth = screenWidth / 2;
radFactor = 180 / 3.1415926535897932385;
type
line3dPtr = ^ line3d;
Line3d = record
FromP, ToP : integer;
end;
screenPointsPtr = ^ screenPoints;
screenPoints = record
sX,sY : integer;
end;
axisType = (x,y,z);
type
point3dPtr = ^ point3d;
point3d = record
x, y, z : real;
end;
const
zeroPoint : point3d = (x:0.0; y:0.0; z:0.0);
xAxis : integer = 45;
yAxis : integer = 45;
var
{$ifdef windows}
MaxX, MaxY : word; { In pixels for graphics screen }
MaxColor : word;
{$endif}
cosine_x,cosine_y,sine_x,sine_y : Real;
currentPath : string[32];
const
currentAxis : axisType = x;
Procedure CalcAxisDeg;
procedure setDefaultSuffix(var Fname : string; suffix : string);
implementation
(******************************************************************************
* CalcAxisDeg *
* calculate sines and cosines of axis, xAxis + yAxis = 90 ! *
******************************************************************************)
Procedure CalcAxisDeg;
begin
Cosine_X := cos(Xaxis/RadFactor);
Cosine_Y := cos(Yaxis/RadFactor);
Sine_X := sin(Xaxis/RadFactor);
Sine_Y := sin(Yaxis/RadFactor);
end; {calcAxisDeg}
(*******************************************************************************
* setDefaultSuffix *
* Set the suffix if Fname to .suffix, if it does not have a suffix *
*******************************************************************************)
procedure setDefaultSuffix;
var
i : integer;
begin
i := length(Fname);
while (i > 0) and (Fname[i] <> '.') do
dec(i);
if (i = 0) then
Fname := Fname + '.' + suffix;
end; {setDefaultSuffix}
(******************************************************************************
* end. *
******************************************************************************)
begin
calcAxisDeg;
end.