i am writing a code that will rotate the polygon but it seem as if it is not working any help?
#include<iostream>
#include<Gl/glut.h>
#include<cstdlib>
using namespace std;
GLfloat fPent = 0.0; // for rotating pentagon;
GLfloat fSqr = 0.0; // for rotating square;
void handleKeyPress(unsigned char key, int x, int y)
{
if(key == 26)
exit(1);
}
int InitGL(GLvoid)
{
glShadeModel(GL_SMOOTH);//Enable smootheness
glClearColor(0.0,0.0,0.0,0.5);//Clear any color to black
glClearDepth(1.0f);//we clear depth.
glEnable(GL_DEPTH_BUFFER_BIT);//we turn on depthness
glDepthFunc(GL_LEQUAL);//the type of test we will use for depth test
glHint(GL_PERSPECTIVE_CORRECTION_HINT,GL_NICEST); //
glEnable(GL_COLOR_BUFFER_BIT);//we enable color buffer.
return true;
}
GLvoid ReSizeGLScene(GLsizei width, GLsizei height)
{
if(height == 0)
height = 1;
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f,(GLfloat)width/(GLfloat)height,0.1f,100.0f);
}
void disp()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear color and depth to what we set it before;
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glTranslatef(-1.0,0.0f,-6.0f);
glRotatef(fPent,1.0f,0.0f,0.0f);
glBegin(GL_TRIANGLES); // Start Drawing A Triangle
glColor3f(1.0f,0.0f,0.0f); // Set Top Point Of Triangle To Red
glVertex3f( 0.0f, 1.0f, 0.0f); // First Point Of The Triangle
glColor3f(0.0f,1.0f,0.0f); // Set Left Point Of Triangle To Green
glVertex3f(-1.0f,-1.0f, 0.0f); // Second Point Of The Triangle
glColor3f(0.0f,0.0f,1.0f); // Set Right Point Of Triangle To Blue
glVertex3f( 1.0f,-1.0f, 0.0f); // Third Point Of The Triangle
glEnd();
glLoadIdentity();
glTranslatef(1.0f,0.0f,1.0f);
glRotatef(fSqr,1.0f,0.0f,0.0f);
glBegin(GL_QUADS);
glColor3f(0.0f,0.0f,0.0f);
glVertex3f(-1.0f, 1.0f, -10.0f);
glColor3f(0.0f,1.0f,0.0f);
glVertex3f( 1.0f, 1.0f, -10.0f);
glColor3f(0.0f,0.0f,1.0f);
glVertex3f( 1.0f,-1.0f, -10.0f);
glColor3f(0.6f,0.4f,1.0f);
glVertex3f(-1.0f,-1.0f, -10.0f);
glEnd();
glutSwapBuffers();
fPent += 1.0;
fSqr -= 0.4;
glFlush();
}
int main(int argc,char**argv)
{
glutInit(&argc,argv);
glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB|GLUT_DEPTH);
glutInitWindowSize(500,500);
glutInitWindowPosition(300,100);
glutCreateWindow("My first polygons with colors and rotations");
glEnable(GL_DEPTH_TEST);
glutDisplayFunc(disp);
glutKeyboardFunc(handleKeyPress);
glutReshapeFunc(ReSizeGLScene);
glutMainLoop();
return 0;
}