private double PointToAngle(Point AOrigin, Point APoint)
{
if (APoint.X == AOrigin.X)
if (APoint.Y > AOrigin.Y)
return Math.PI * 0.5f;
else return Math.PI * 1.5f;
else if (APoint.Y == AOrigin.Y)
if (APoint.X > AOrigin.X)
return 0;
else return Math.PI;
else
{
double Result = Math.Atan((double)(AOrigin.Y - APoint.Y) /
(AOrigin.X - APoint.X));
if ((APoint.X < AOrigin.X) && (APoint.Y > AOrigin.Y))
return Result + Math.PI;
else if ((APoint.X < AOrigin.X) && (APoint.Y < AOrigin.Y))
return Result + Math.PI;
else if ((APoint.X > AOrigin.X) && (APoint.Y < AOrigin.Y))
return Result + 2.0f * Math.PI;
else return Result;
}
}我返回的值是1。12…………
我不知道这值代表什么,本人数学不好。
{
if (APoint.X == AOrigin.X)
if (APoint.Y > AOrigin.Y)
return Math.PI * 0.5f;
else return Math.PI * 1.5f;
else if (APoint.Y == AOrigin.Y)
if (APoint.X > AOrigin.X)
return 0;
else return Math.PI;
else
{
double Result = Math.Atan((double)(AOrigin.Y - APoint.Y) /
(AOrigin.X - APoint.X));
if ((APoint.X < AOrigin.X) && (APoint.Y > AOrigin.Y))
return Result + Math.PI;
else if ((APoint.X < AOrigin.X) && (APoint.Y < AOrigin.Y))
return Result + Math.PI;
else if ((APoint.X > AOrigin.X) && (APoint.Y < AOrigin.Y))
return Result + 2.0f * Math.PI;
else return Result;
}
}我返回的值是1。12…………
我不知道这值代表什么,本人数学不好。
double a=PointToAngle(Point AOrigin, Point APoint) ;
int 角度=a/Math.PI*180;