float to integer

[clueless]

Does anyone know how to convert a floating point number into an integer value ? thanks.

[longedge]

How accurate do you have to be?

Would -

var_int = Math.Floor(var_mynumber+0.5);

be near enough?

[clueless]

Thanks but i managed to make a DLL in C++ that does the job

function GetInt(FloatNumber)
return DLL.CallFunction("AutoPlay\\Dlls\\Integers.dll", "ReturnInt", FloatNumber, DLL_RETURN_TYPE_INTEGER, DLL_CALL_STDCALL);
end

[Desolator]

Did you make sure that the DLL handles double and not float? Lua interprets numbers as double.

[clueless]

Im not sure what you mean, to be honest this is the first DLL ive ever made.
It accepts a Float and returns a Integer.It seems to work ok for me in AMS7.

[Desolator]

What language did you use to make this? Lua uses `double' instead of `float' for ALL numbers, so if I send it a bigger number I'll get a negative number instead.

[clueless]

Visual C++

[Desolator]

Then mind replacing `float' with `double'?

[clueless]

It will probably work ok with a double to.

[clueless]

Thinking about it... its far easyer to convert the number to a string and then just return everything left of the decimal point;

function ConvertToInt(Anumb)
if String.Find(Anumb.."", ".", 1, false) > 1 then
   Anumb = String.ToNumber(String.Left(Anumb.."" , String.Find(Anumb.."", ".", 1, false)-1));
   end
return Anumb
end

[longedge]

Thinking about it... its far easyer to convert the number to a string and then just return everything left of the decimal point;

Would you really want to return 1.99999999 as 1 ? If it comes down to ease with reasonable accuracy, I can't imagine anything easier than the single line of code in my earlier post - but perhaps I'm missing something

[Desolator]

Math.Round? :P

Anyway, AMS sends numbers as `long int', thus no floating-point numbers unless you make a plug-in.

[longedge]

Math.Round? :P

Anyway, AMS sends numbers as `long int', thus no floating-point numbers unless you make a plug-in.

I was working on principle that Math.Round reduces a real number to a specified number of decimal places whereas Math.Floor returns an integer. Yes OK you can specify zero decimal places and it's as short as it is long :lol

..and what do I know anyway - I never listened to my Maths Teachers

[clueless]

I was adding a crop function to an animation editor im making. The user sellects the frame to be cropped which is passed to a cropping page which displays the picture with a rectangle in the center representing the area to be cropped. because the frame size is not fixed i needed to calculate the size of the cropping rectangle relative to the size of the frame. If you try to set the co-ordinates of a rectangle with anything other than whole numbers it just wont work.

FileInfo        = Image.GetFileInfo(LoadPic);
TheWidth        = FileInfo.Width;
TheHeight       = FileInfo.Height;
Ax              = GetInt(TheWidth  / 4);
Ay              = GetInt(TheHeight / 4);
Bx              = Ax        * 3
By              = Ay        * 3;
RectangleWidth  = Bx        - Ax;
RectangleHeight = By        - Ay;

Image.SetSize("Image1", TheWidth, TheHeight);
Image.Load("Image1", DrawRectangle(LoadPic, Colors.White, 1, Ax, Ay,RectangleWidth, RectangleHeight));