Delphi Trigonometry

Delphi Trigonometry: Useful for PCB Scripts.

Intersection of two straight lines - Online Simulation

Simulation Source: Math open Reference

Delphi code to Get Angle

const
RADIANS=57.29577951;

// If Angle is outside of 0-360 then put it within 0-360
function FixAngle(angle:double):double;
begin
 while angle>= 360.0 do
  angle := angle - 360.0;
 while angle < 0 do
  angle := angle + 360.0;
 result:=angle;
end;

// Angle going from x1,y1 to x2,y2
function GetAngleDegrees(x1,y1,x2,y2:double):double;
var
   part1, part2:double;
   angle:double;
begin
     if (x1=x2) and (y1=y2) then
        begin
        result:=0.0;
        exit;
     end;
     part1:=abs(y2-y1);
     if (part1=0) then begin part1:=0.0000001; y1:=y1+0.0000001; end;
     part2:=abs(x2-x1);
     if (part2=0) then begin part2:=0.0000001; x1:=x1+0.0000001; end;
     angle:=arctan(part1/part2)*RADIANS;
     if ((x1>x2) and (y1<y2)) then angle:=180-angle;
     if ((x1>x2) and (y1>y2)) then angle:=angle +180;
     if ((x1<x2) and (y1>y2)) then angle:=360-angle;
     angle:=FixAngle(angle);
     result:=angle;
end;

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