Tag: click

I have a program to display a man scratching his head on an openGL window. I want to make sure that where I click on the window, it is there that the man will appear. If I right click on the man, he will appear in this position with a different color.

Here is my code:

// ************************************************ ************************************

std :: string input;
empty drawPoints ()
{

//axis labels
glColor3f(0, 0, 0);
glRasterPos2i(155, -5);
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_10, 'X');
glRasterPos2i(-5, 155);
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_10, 'Y');

glPointSize(5);
glBegin(GL_POINTS); // use points to form X-/Y-axes


     // change drawing color to black
for (int x = -150; x <= 150; x++) // draw X-axis
    glVertex2i(x, 0);
for (int y = -150; y <= 150; y++) // draw Y-axis
    glVertex2i(0, y);
glEnd();





static GLubyte smiley() = /* 16x16 smiley face */
{
  0x01, 0x80, 0, 0,  ///1
  0x03, 0xE0, 0, 0,
  0x01, 0xFF, 0x80, 0,
  0x00, 0x3f, 0x80, 0,
  0x70, 0x00, 0x80, 0,  ///2
  0xFC, 0x00, 0x80, 0,
  0x1f, 0x80, 0x80, 0,
  0x03, 0xC0, 0xC0, 0,
  0x00, 0xC1, 0x80, 0, //3
  0x00, 0xC1, 0x80, 0,
  0x00, 0xc1, 0x80, 0,
  0x00, 0xc3, 0, 0,
  0x00, 0xC3, 0, 0, //4
  0x00, 0x86, 0, 0,
  0x00, 0x86, 0, 0,
  0x00, 0x8c, 0, 0 ,
    0x00, 0x8c, 0, 0,//5
    0x01, 0x8c, 0, 0,
    0x01, 0x9c, 0, 0,
    0x01, 0x9c, 0, 0,
    0x01, 0x9c, 0, 0,//6
    0x01, 0xDC, 0, 0,
    0x01, 0xDC, 0, 0,
    0x01, 0xFC, 0, 0,
    0x01, 0xFC, 0x10, 0,//7
    0x01, 0xFE, 0x70, 0,
    0x01, 0xFE, 0xC0, 0,
    0x03, 0xFF, 0x80, 0,
    0x03, 0xFF, 0, 0,//8
    0x03, 0xFF, 0, 0,
    0x03, 0xFD, 0xFC, 0,
    0x03, 0xF8, 0x3, 0,//////////
    0x03, 0xF8, 0x3, 0,//9
    0x03, 0xF8, 0x6, 0,
    0x03, 0xF8, 0xC, 0,
    0x03, 0xF8, 0x18, 0,
    0x03, 0xFc, 0x70, 0,//10/////
    0x03, 0xFC, 0xE0, 0,
    0x01, 0xFD, 0xC0, 0,
    0x01, 0xFF, 0xC0, 0,/////
    0x01, 0xFF, 0x80, 0,//11
    0x03, 0xFF, 0, 0,
    0x07, 0xBE, 0, 0,
    0x0F, 0x98, 0, 0,
    0x0F, 0x30, 0, 0,//12
    0x1E, 0x3c, 0, 0,
    0x3c, 0x7f, 0, 0,
    0x38, 0x7f, 0x80, 0,
    0x70, 0x7f, 0xc0, 0,//13
    0x63, 0xFF, 0xE0, 0,
    0x60, 0x7f, 0xF0, 0,
    0xE0, 0x3f, 0xF0, 0,/////
    0xE0, 0x1f, 0xF0, 0,//14
    0xE0, 0x1f, 0xF0, 0,
    0xF0, 0x0F, 0xF0, 0,
    0x3f, 0xF7, 0xF0, 0,
    0x01, 0xF3, 0xF0, 0,//5///
    0x00, 0x10, 0x1c, 0,
    0x00, 0x18, 0x06, 0,
    0x00, 0x0F, 0x06, 0,
    0x00, 0x06, 0x01, 0,//5////
    0x00, 0x00, 0x01, 0xc0,
    0x00, 0x00, 0, 0x20,
    0x00, 0x00, 0, 0x20,
    0x00, 0x00, 0, 0xE0,//5
    0x00, 0x00, 0, 0,
    0x00, 0x00, 0, 0,
    0x00, 0x00, 0, 0,
};


glMatrixMode(GL_PROJECTION);

/*
 * This bitmap is aligned to 4-byte boundaries…
 */

glPixelTransferi(GL_UNPACK_ALIGNMENT, 4);

glColor3f(1.0, 0.0, 0.0);
glRasterPos2i(0, 0);
glBitmap(32, 72, 8.0, 8.0, 0.0, 0.0, smiley);

}

// ************************************************ ************************************
cancel myInit ()
{
glClearColor (1, 1, 1, 0); // specifies a background: white
gluOrtho2D (-200, 200, -200, 200); // specify a viewport
}

// ************************************************ ************************************
cancel myDisplayCallback ()
{
glClear (GL_COLOR_BUFFER_BIT); // draw the background

drawPoints();

glFlush(); // flush out the buffer contents

}

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

glutInitWindowSize(400, 400);               // specify a window size
glutInitWindowPosition(100, 0);         // specify a window position
glutCreateWindow("Simple Point Drawing");   // create a titled window

myInit();                                   // setting up

glutDisplayFunc(myDisplayCallback);     // register a callback

glutMainLoop();                         // get into an infinite loop

return 0;

}