Logistic-Regression/update.cpp at master · introvertkernel/Logistic-Regression · GitHub

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void Write(double x,double y,double z,double scale,char *s);
void redisplay(void);
void myreshape2 (int w, int h);
void initOpenGL();
void keyboard(unsigned char key,int x,int y);
void func1(void);
#include <math.h>        // For math routines (such as sqrt & trig).
#include <stdio.h>
#include <GL/glut.h>
#include<string.h>

void  hitkey(unsigned char key,int x,int y){
    switch(key){
        case '67':func1();
    }

}
void func1(void){

    glMatrixMode( GL_PROJECTION );
    glLoadIdentity();
    double w = glutGet( GLUT_WINDOW_WIDTH );
    double h = glutGet( GLUT_WINDOW_HEIGHT );
    glOrtho( 0, w, 0, h, -1, 1);

    glMatrixMode( GL_MODELVIEW );
    glLoadIdentity();

    // important
    glTranslatef( 0.5, 0.5, 0 );

    float offset = 40;
    glColor3ub( 255, 0, 0 );
    glBegin(GL_LINE_LOOP);
    glVertex2f( 0+offset, 0+offset );
    glVertex2f( 0+offset, h-offset );
    glVertex2f( w-offset, h-offset );
    glVertex2f( w-offset, 0+offset );
    glEnd();
}
void Write(double x,double y,double z,double scale,char *s)
{
   int i,l=strlen(s);
   glPushMatrix();
   glTranslatef(x,y,z);
   glScalef(scale,scale,scale);
   for (i=0;i <l;i++)
   glutStrokeCharacter(GLUT_STROKE_ROMAN,s[i]);
   glPopMatrix();
}
void redisplay(void)
{

    glClear(GL_COLOR_BUFFER_BIT);
    glColor3f(1.0, 0.0, 0.0);
    Write(-4.0,2.5,0.0,0.003,"    ATRIA INSTITUTE OF TECHNOLOGY");
    Write(- 2.5,1.5,0.0,0.002,"    Logistic Regression Simulation");
    // glColor3f(0,0,1);
    // Write(-0.8,1.0,-0.6,0.002,"NETWORK SYSTEM");
    // glColor3f(0.7,0,1);
    Write(-1.5,0.5,0.0,0.002,"Press 'C' to continue.......");
    glColor3f(1,0.5,0);
    Write(-2.5,-0.80,0.0,0.0015,"              Submitted By:        ");
    glColor3f(0,0,1);
    Write(-3.0,-1.1,0.0,0.0015,"            Gurunatha Srinivasa Bhatta                ");
    glColor3f(0,0,1);
    Write(-3.0,-1.3,0.0,0.0015,"                 1AT15CS026");
    glColor3f(0,0,1);
    Write(-2.2,-1.7,0.0,0.0015,"         Under The Guidance Of:    ");
    glColor3f(0,0,1);
    Write(-2.2,-1.9,0.0,0.0015,"          Mr. SATHISHA        ");
    glColor3f(0,0,1);
    Write(-2.2,-2.1,0.0,0.0015,"        Lecturer,Dept. of CS&E      ");
    glColor3f(0,1,1);
    Write(-1.6,-2.5,0.0,0.0015,"          ATRIA              ");

    Write(-1.8,-2.7,0.0,0.0015,"         ANANDNAGAR             ");

    Write(-1.8,-2.9,0.0,0.0015,"        Bangalore-560024      ");

    glFlush();

}
void myreshape2 (int w, int h)
{
   glViewport (0, 0, (GLsizei) w, (GLsizei) h);
   glMatrixMode (GL_PROJECTION);
   glLoadIdentity ();
   gluPerspective(65.0, (GLfloat) w/(GLfloat) h, 1.0, 20.0);
   glMatrixMode(GL_MODELVIEW);
   glLoadIdentity();
   glTranslatef (0.0, 0.0, -5.0);
}

void initOpenGL()
{
    glClearColor(1.0,0.90,0.97,1.0);

}

int main( int argc, char** argv )
{
    glutInit(&argc, argv);

    glutInitWindowSize( 1024, 700 );
    //glutInitWindowPosition( 0, 0 );
    glutCreateWindow("introduction");

    initOpenGL();

    glutReshapeFunc(myreshape2);
    glutDisplayFunc(redisplay);
    glutKeyboardFunc(hitkey);
    glutMainLoop();
    return(0);    // This line is never reached.
}