C / C++ / MFC

24-Mar-09 6:49

Neverthless, it looks like you are here, now. Roll eyes | :rolleyes:

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

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Re: Option missing

toxcct24-Mar-09 7:29

toxcct

24-Mar-09 7:29

I was just having an eye, and it comforts me in my thoughts...

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Re: Option missing

CPallini24-Mar-09 7:33

24-Mar-09 7:33

So, what the hell are you doing here? Please go back to the java scientists... Laugh | :laugh:

Please don't be hurted, you know I can't resist kidding... Roll eyes | :rolleyes:

I need help URGENT plz

Mohamed_Khalil24-Mar-09 5:54

24-Mar-09 5:54

Hi Guyz

I have Assignment in c++ and it required to put the classes members in .h file

and creat the function in .cpp file

and the main function in .cpp also

((((#include "Name.h")))))

but it not woring however if the classes and the function inside the main.cpp it works fine

im using Dev c++ and VC++ the same issue i recieved Cry | :((

Michael Schubert24-Mar-09 5:57

Michael Schubert

24-Mar-09 5:57

Brace yourself.

Mohamed_Khalil24-Mar-09 5:59

24-Mar-09 5:59

Michael Schubert24-Mar-09 6:02

Michael Schubert

24-Mar-09 6:02

CPallini24-Mar-09 7:56

24-Mar-09 7:56

We may ask Chris to make a new forum, the 'I need help URGENT plz' one.
Big Grin | :-D

Roger Stoltz24-Mar-09 6:02

Roger Stoltz

24-Mar-09 6:02

dr.nokia wrote:
((((#include "Name.h")))))

Michael Schubert wrote:
Brace yourself.

"It's supposed to be hard, otherwise anybody could do it!" - selfquote
"High speed never compensates for wrong direction!" - unknown

Maximilien24-Mar-09 6:02

Maximilien

24-Mar-09 6:02

Well, you should go back a read your class notes; ask you classmates, friends, teacher, teaching assistants ...

This is very, very, very basic stuff you are asking.

This signature was proudly tested on animals.

Mohamed_Khalil24-Mar-09 6:05

24-Mar-09 6:05

Dude I know it basic and easy Q. but it confusing me

David Crow24-Mar-09 6:17

24-Mar-09 6:17

dr.nokia wrote:
I have Assignment in c++...

First one?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Mohamed_Khalil24-Mar-09 6:18

24-Mar-09 6:18

yes!!!

David Crow24-Mar-09 6:22

24-Mar-09 6:22

So what do have you in place so far? What compiler/linker error(s) are you getting?

Mohamed_Khalil24-Mar-09 6:24

24-Mar-09 6:24

[Linker error] undefined reference to `Date::getDate()'
[Linker error] undefined reference to `Date::showDate()'
ld returned 1 exit status

I must link the .ccp , .h with the mainCode but it's not working

how ever if I put the code in one main file it works fine Confused | :confused:

David Crow24-Mar-09 6:37

24-Mar-09 6:37

Is Date a class of yours? Are getDate() and showDate() static methods?

Mohamed_Khalil24-Mar-09 6:46

24-Mar-09 6:46

ya the program ask the user to implemnt the date mm/dd/yy with function int getDate()

and the program should outputs the with void showDate()

but this two function are public members and the ipmlemntation in .cpp file

#include "stdafx.h"
#include "Date.h"
#include <iostream>
using namespace std;

int main()
{
Date d;
cout<<"Enter the date within formam mm/dd/yy\n";
cin>>d.month>>d.day>>d.year
d.getDate();
d.showDate();
system("pause");
return 0;
}

//Date.cpp function

#include "stdafx.h"
#include "Date.h"

using namespace std;

int Date::getDate() //(int month,int day,int year)
{
return(month,day,year);
}

void Date::showDate()
{
cout<<month<<"/"<<day<<"/"<<year<<endl;
}

//HEADER FILE
#ifndef DATE_H
#define DATE_H

class Date
{
public:
int month;
int day;
int year;
int getDate();
void showDate();
};

I think my problem in the passing arguments !!?

David Crow24-Mar-09 6:56

24-Mar-09 6:56

dr.nokia wrote:
return(month,day,year);

What is this?

dr.nokia wrote:
cin>>d.month>>d.day>>d.year

Missing a semicolon.

dr.nokia wrote:
d.showDate();

This statement is not doing anything useful.

dr.nokia wrote:
I think my problem in the passing arguments !!?

No. Arguments are what get passed to functions/methods.

Other than the one syntax error, your code should compile and work as expected. It could be vastly improved, but that is another subject altogether.

Mohamed_Khalil24-Mar-09 7:04

24-Mar-09 7:04

Thanx Mr.Daived

i fixid the semicolon but it not working also Frown | :(

i will try my best and thanx alot for ur help

good luck !!

CPallini24-Mar-09 7:03

hello ，my questions is about opencv track

24-Mar-09 7:03

What about a good C++ tutorial?

BTW you really need to read this [^], before posting.
Smile | :)

onlybluemoon24-Mar-09 5:28

onlybluemoon

24-Mar-09 5:28

Ｉ　found　the opencv source of cvcamshift.cpp .I have one problem of cvCamShift function in this file.That is how it change the weidth and hength and orientation .

In cvcamshift.cp:
m00 = moments.m00;
m10 = moments.m10;
m01 = moments.m01;
mu11 = moments.mu11;
mu20 = moments.mu20;
mu02 = moments.mu02;

if( fabs(m00) < DBL_EPSILON )
EXIT;

inv_m00 = 1. / m00;
xc = cvRound( m10 * inv_m00 + windowIn.x );
yc = cvRound( m01 * inv_m00 + windowIn.y );
a = mu20 * inv_m00;
b = mu11 * inv_m00;
c = mu02 * inv_m00;

/* Calculating width & height */
square = sqrt( 4 * b * b + (a - c) * (a - c) );

/* Calculating orientation */
theta = atan2( 2 * b, a - c + square );

/* Calculating width & length of figure */
cs = cos( theta );
sn = sin( theta );

rotate_a = cs * cs * mu20 + 2 * cs * sn * mu11 + sn * sn * mu02;
rotate_c = sn * sn * mu20 - 2 * cs * sn * mu11 + cs * cs * mu02;
length = sqrt( rotate_a * inv_m00 ) * 4;
width = sqrt( rotate_c * inv_m00 ) * 4;

IN a paper:(I am sorry ,It's not clear .But if you want I can send to you.)
The orientation (θ) of the major axis and the scale of the distribution are determined by finding an equivalent rectangle that has the same moments as those measured from the 2D probability distribution image (c.f. Horn, 1986). Defining the first and second moments for x and y
ΣΣ=xyyxIxM),(220
ΣΣ=xyyxIyM),(202
ΣΣ=xyyxxyIM),(11
The first two eigenvalues (the length and width of the probability distribution) are calculated in closed form as follows. From the intermediate variables a, b and c20020cxMMa−= −=ccyxMMb00112 20002cyMMc−=
We find the orientation of the equivalent rectangle −=−cab1tan21θ
The distances l1 and l2 from the distribution centroid (the dimensions of the equivalent rectangle) are given by, 2)()(221cabcal−+++= 2)()(222cabcal−+−+=
Where the extracted parameters are independent of the overall image intensity.

Thank you .I am looking forward to your answer.

CPallini24-Mar-09 7:40

24-Mar-09 7:40

As far as I can understand, there is no question, in your post.
Smile | :)

onlybluemoon24-Mar-09 20:29

onlybluemoon

24-Mar-09 20:29

sorry，I don't understand.Do you say you can't understand me?

hello

CPallini24-Mar-09 22:15

24-Mar-09 22:15

Simply there is no question in your post: what did you intend to ask? Moreover could you please reformat it? As it stands, it is difficult to understand.
Smile | :)