مشکل در رسم نمودار دایره ای در open gl

[majidariamanesh]

من می خوام نمودار دایره ای با open gl رسم کنم اما کدم جواب نمیده
کسی میدونه مشکلش چیه؟

بعد باید برچسب هم به نمودار بزنم کسی میتونه راهنمایی کنه؟


#include <glut.h>
#include <stdlib.h>
#include <math.h>

const GLdouble towPi = 6.283185 ;

class scrPt
{
public :
GLint x,y;
};

class screenPt
{
private :
GLint x , y;
public:
screenPt()
{
x = y = 0;
}

void setCoords(GLint xCoordValue ,GLint yCoordValue )
{
x = xCoordValue;
y = yCoordValue;
}

GLint getx() const
{
return x;
}

GLint gety() const
{
return y;
}

void incX ()
{
x++;
}

void decY ()
{
y--;
}
};

GLsizei winWidth = 400 , winHeight = 300 ;

void init(void)
{
glClearColor (1.0 , 1.0 , 1.0 , 1.0);
glMatrixMode (GL_PROJECTION);
gluOrtho2D(0.0 , 200.0 , 0.0 , 150.0);
}

void setPixel (GLint xCoord , GLint yCoord)
{
glBegin(GL_POINTS);
glVertex2i(xCoord , yCoord);
glEnd();
}

void circleMidPoint(GLint xc , GLint yc , GLint radius)
{
screenPt circPt ;

GLint p = 1 - radius ;

circPt.setCoords(0,radius);

void circleplotPoint(GLint ,GLint , screenPt);

circleplotPoint(xc , yc , circPt);

while (circPt.getx()<circPt.gety())
{
circPt.incX();
if (p < 0)
p += 2 * circPt.getx()+1;
else
{
circPt.decY();
p += 2 * (circPt.getx() - circPt.gety()) + 1;

}

circlePlotPoints(xc , yc , circPt);
}
}

void circlePlotPoints(GLint xc , GLint yc , screenPt circPt)
{
setPixel(xc + circPt.getx(),yc + circPt.gety());
setPixel(xc - circPt.getx(),yc + circPt.gety());
setPixel(xc + circPt.getx(),yc - circPt.gety());
setPixel(xc - circPt.getx(),yc - circPt.gety());
setPixel(xc + circPt.getx(),yc + circPt.gety());
setPixel(xc - circPt.getx(),yc + circPt.gety());
setPixel(xc + circPt.getx(),yc - circPt.gety());
setPixel(xc - circPt.getx(),yc - circPt.gety());
}

void pieChart(void)
{
scrPt circCtr , piePt;
GLint radius = winWidth / 4;

GLdouble sliceAngle , perviosSliceAngle = 0.0;

GLint k , nSlices = 12 ;
GLfloat dataValues [12] = {10.0 , 7.0 , 13.0 , 5.0 , 13.0 , 14.0 , 3.0 , 16.0 , 5.0 , 3.0, 17.0 , 8.0 };

GLfloat dataSum = 0.0;

circCtr.x = winWidth/2;
circCtr.y = winHeight/2;

circleMidPoint(circCtr.x,circCtr.y , radius);

for (k = 0 ; k < nSlices ; k++ )
dataSum += dataValues [k];

for (k = 0 ; k < nSlices ; k++)
{
sliceAngle = towPi * dataValues[k] / dataSum + perviosSliceAngle ;
piePt.x = circCtr.x + radius * cos(sliceAngle);
piePt.y = circCtr.y + radius * sin(sliceAngle);

glBegin (GL_LINES);
glVertex2i (circCtr.x , circCtr.y);
glVertex2i (piePt.x , piePt.y);
glEnd();

perviosSliceAngle = sliceAngle;
}
}

void displayFcn(void)
{
glClearColor(GL_COLOR_BUFFER_BIT);

glColor3f (0.0 , 0.0 ,1.0);

pieChart();
glFlush();
}

void winReshapeFcn(GLint newWidth , GLint newHeight)
{
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(0.0 , GLdouble (newWidth) , 0.0 , GLdouble (newHeight) );

glClear(GL_COLOR_BUFFER_BIT);

winWidth = newWidth ;
winHeight = newHeight;


}


void main (int argc , char **argv)
{
glutInit(&argc , argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);

glutInitWindowPosition(100,100);
glutInitWindowSize(winWidth , winHeight);

glutCreateWindow("nemodar by majid ahmadi");

init ();

glutDisplayFunc (displayFcn);

glutReshapeFunc(winReshapeFcn);

glutMainLoop();
}

[UfnCod3r]

خب بگو مشکلت دقیقا چیه
فکرکنم اینو بنویسی درست بشه


gluOrtho2D(0,200,200,0)

اینطوری بالا چپ میشه 0و0 و پایین راست میشه 200و200
:لبخندساده:

[majidariamanesh]

ببینید وقتی می خواد اجرا بشه این ارور رو میده
Error 1 error C2381: 'exit' : redefinition; __declspec(noreturn) differs c:\program files (x86)\microsoft visual studio 10.0\vc\include\stdlib.h 353 1 opengl1

[majidariamanesh]

Error 1 error C2381: 'exit' : redefinition; __declspec(noreturn) differs c:\program files (x86)\microsoft visual studio 10.0\vc\include\stdlib.h 353 1 opengl1