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#define _USE_MATH_DEFINES
#include <cmath>
 
 
 
/* Global variables */
char title[] = "Animal Farm - Final Project";
GLsizei winWidth = 800, winHeight = 600;
 
// Angle for animation
int font = (int)GLUT_BITMAP_8_BY_13;
GLfloat M = 100.0; // mass
GLfloat T = 0.00; // time
GLfloat skyColor = 1.0;
GLfloat sunColor = 0.0;
GLfloat sunPos = 2.0;
GLfloat sheepHead = 0.5;
GLfloat sheepHeadRot = 0.0;
GLboolean sheepHeadDown = false;
GLfloat pigHead = 0.5;
GLboolean pigHeadDown = false;
 
GLfloat rainPos = 0.5;
 
/* Initialize OpenGL Graphics */
void init() {
	// Get and display your OpenGL version
	const GLubyte *Vstr;
	Vstr = glGetString(GL_VERSION);
	fprintf(stderr, "Your OpenGL version is %s\n", Vstr);	
 
	// Set background color to blue 
	glClearColor(0.0f, 0.0f, skyColor, 0.0f);
	// Maximize depth display
	glClearDepth(1.0f);
	// Enable depth testing for z-culling
	glEnable(GL_DEPTH_TEST);
	// Set the type of depth-test
	glDepthFunc(GL_LEQUAL);
	// Provide smooth shading
 
}
 
// convenience function for displaying strings
void renderBitmapString(float x, float y, void *font, char *string)
{
	char *c;
	glRasterPos3f(x, y, -7.0);
	for (c = string; *c != '\0'; c++) {
		glutBitmapCharacter(font, *c);
	}
}
 
void animateAll(void)
{
	Sleep(WAITMS);
 
	if (skyColor <= 0.0){
		// controls the specular color 
		GLfloat mat_specular[] = { 0.5, 0.5, 0.5, 1.0 };
		GLfloat mat_shininess[] = { 100.0 };
		GLfloat light_position[] = { 4.0, sunPos, -4.0, 0.0 };
		// Apply the specular color to the front. 
		glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
		// Apply the shininess to the front. 
		glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
		// Apply the first light (Light0) at the assigned position 
		glLightfv(GL_LIGHT0, GL_POSITION, light_position);
		// Enable lighting and Depth perception 
		glEnable(GL_LIGHTING);
		glEnable(GL_LIGHT0);
	}
	else
		glDisable(GL_LIGHTING);
 
 
	//Rain movement
	GLfloat accel = 9.8 * M * pow(T, 2.0);
	if (T < 0.03){
		T += 0.001;
	}
	rainPos -= accel;
	if (rainPos < -4.0){
		T = 0.0;
		rainPos = 0.5;
	}
 
	//Sheep movement
	if (sheepHeadDown == false){
		if (sheepHead == 0.5 && sheepHeadRot > -50.0){
			sheepHeadRot -= 1.0;
		}
		else if (sheepHeadRot == -50.0 & sheepHead > -0.3){
			sheepHead -= 0.01;
		}
		else{
			sheepHeadDown = true;
		}
	}
	else if (sheepHeadDown == true){
		if (sheepHead < 0.5){
			sheepHead += 0.01;
		}
		else if (sheepHead == 0.5 && sheepHeadRot < 0.0){
			sheepHeadRot += 1.0;
		}
		else
			sheepHeadDown = false;
	}
	//Pig movement
	if (pigHeadDown == false){
		if (pigHead > -0.3){
			pigHead -= 0.01;
		}
		else{
			pigHeadDown = true;
		}
	}
	else if (pigHeadDown == true){
		if (pigHead < 0.5){
			pigHead += 0.01;
		}
		else
			pigHeadDown = false;
	}
	//Sun movement
	if (sunPos > 0.0){
		sunPos -= 0.01;
	}
	if (sunPos <= 0.0 && sunPos > -2.2){
		sunPos -= 0.01;
		if (skyColor > 0.0){
			skyColor -= 0.005;
		}
		glClearColor(0.0f, 0.0f, skyColor, 0.0f);
	}
	if (sunPos <= -2.2 && sunColor == 0.0){
		sunPos = 6.0;
		sunColor = 1.0;
	}
	else if (sunPos <= -2.2 && sunColor == 1.0){
		sunPos = 6.0;
		sunColor = 0.0;
	}
	if (sunPos > 4.0 && sunColor == 0.0 && skyColor < 1.0){
		skyColor += 0.005;
		glClearColor(0.0f, 0.0f, skyColor, 0.0f);
	}
 
	glutPostRedisplay();
}
 
void sheep(GLdouble x, GLdouble y, GLdouble z){
	// Body
	glColor3f(1.0, 1.0, 1.0);
	glLoadIdentity();
	glTranslatef(x,y,z);
	glScalef(1.0f, 0.5f, 0.5f);
	glutSolidSphere(0.75, 15, 15);
 
	// Head
	glColor3f(0.7, 0.7, 0.7);
	glTranslatef(0.7f, sheepHead, 0.0f);
	glRotatef(sheepHeadRot, 0.0f, 0.0f, 1.0f);
	glScalef(0.5f, 0.3f, 0.3f);	
	glutSolidSphere(0.75, 15, 15);
 
	//Legs
	glLoadIdentity(); 
	glTranslatef(-1.15, -0.7, -7.0f);
	glScalef(1.0f, 0.5f, 0.5f);
	glTranslatef(0.5f, 0.5, 0.0f);
	glScalef(0.5f, 0.3f, 0.3f);
	glColor3f(0.7, 0.7, 0.7);
	glTranslatef(-2.0f, -4.0, 1.0f);
	glScalef(0.3f, 4.0f, 1.0f);
	glutSolidCube(1.0);	
	glTranslatef(1.5f, 0.0f, -1.0f);
	glutSolidCube(1.0);	
	glTranslatef(5.0f, 0.0f, 0.0f);
	glutSolidCube(1.0);
	glTranslatef(-1.5f, 0.0f, 1.0f);
	glutSolidCube(1.0);
}
 
void pig(GLdouble x, GLdouble y, GLdouble z){
	// Body
	glColor3f(1.0, 0.3, 0.3);
	glLoadIdentity();
	glTranslatef(x, y, z);
	glScalef(1.0f, 0.5f, 0.5f);
	glutSolidSphere(0.75, 15, 15);
 
	// Head
	glTranslatef(-0.7f, pigHead, 0.0f);
	glColor3f(0.7, 0.0, 0.0);
	glScalef(0.3f, 0.6f, 0.6f);
	glutSolidSphere(0.75, 15, 15);
 
	//Legs
	glLoadIdentity();
	glTranslatef(x, y, z);
	glScalef(1.0f, 0.5f, 0.5f);
	glTranslatef(-0.7f, 0.5, 0.0f);
	glScalef(0.3f, 0.6f, 0.6f);
 
	glTranslatef(0.5f, -2.0, 1.0f);
	glScalef(0.3f, 2.0f, 1.0f);
	glutSolidCube(1.0);
	glTranslatef(1.5f, 0.0f, -1.0f);
	glutSolidCube(1.0);
	glTranslatef(10.0f, 0.0f, 0.0f);
	glutSolidCube(1.0);
	glTranslatef(-1.5f, 0.0f, 1.0f);
	glutSolidCube(1.0);
}
 
void triangle(double x, double y, double z){
	glLoadIdentity();
	glTranslatef(x, y, z);
	glColor3f(0.0, 1.0, 0.0);
	glScalef(0.1f, 0.1f, 0.1f);
	glBegin(GL_POLYGON);
		glVertex2i(0.0, 0.0);
		glVertex2i(2.0, -2.0);
		glVertex2i(-2.0, -2.0);
	glEnd();
}
 
void grass(){
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -9.0);
	}
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -7.9);
	}
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -7.0);
	}
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -6.0);
	}
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -5.0);
	}
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -4.0);
	}
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -3.5);
	}
	for (double i = -5; i < 5; i += .1){
		glLoadIdentity();
		triangle(i, -1.0, -3.0);
	}
}
 
void clouds(){
	// Head
	glTranslatef(-2.0f, 1.0, -8.0f);
	glColor3f(0.5, 0.5, 0.5);
	glutSolidSphere(0.25, 15, 15);
	glTranslatef(-0.25f, 0.25, 0.0f);
	glutSolidSphere(0.25, 15, 15);
	glTranslatef(-0.25f, -0.25, 0.0f);
	glutSolidSphere(0.25, 15, 15);
	glTranslatef(-0.25f, 0.25, 0.0f);
	glutSolidSphere(0.25, 15, 15);
	glTranslatef(-0.25f, -0.25, 0.0f);
	glutSolidSphere(0.25, 15, 15);
	glTranslatef(-0.25f, 0.25, 0.0f);
	glutSolidSphere(0.25, 15, 15);
	glTranslatef(-0.25f, -0.25, 0.0f);
	glutSolidSphere(0.25, 15, 15);
}
 
void rainDrop(){
	glColor3f(0.0, 1.0, 1.0);
	GLubyte bitShape2[72] = {
		0x01, 0xFF, 0x80,
		0x03, 0xFF, 0xC0,
		0x07, 0xFF, 0xE0,
		0x0F, 0xFF, 0xF0,
		0x1F, 0xFF, 0xF8,
		0x3F, 0xFF, 0xFC,
		0x3F, 0xFF, 0xFC,
		0x7F, 0xFF, 0xFE,
		0x7F, 0xFF, 0xFE,
		0x7F, 0xFF, 0xFE,
		0x3F, 0xFF, 0xFC,
		0x3F, 0xFF, 0xFC,
		0x1F, 0xFF, 0xF8,
		0x0F, 0xFF, 0xF0,
		0x07, 0xFF, 0xE0,
		0x03, 0xFF, 0xC0,
		0x01, 0xFF, 0x80,
		0x00, 0xFF, 0x00,
		0x00, 0x7E, 0x00,
		0x00, 0x7E, 0x00,
		0x00, 0x3C, 0x00,
		0x00, 0x3C, 0x00,
		0x00, 0x18, 0x00,
		0x00, 0x18, 0x00,	
	};
	glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
 
	glTranslatef(-0.1f, rainPos, -9.0f);
	glRasterPos2i(-4.0, 0.0);
 
	glBitmap(24.0, 24.0, 0.0, 0.0, 36.0, 0.0, bitShape2);
	glBitmap(24.0, 24.0, 0.0, 0.0, 36.0, 24.0, bitShape2);
	glBitmap(24.0, 24.0, 0.0, 0.0, 36.0, -24.0, bitShape2);
	glBitmap(24.0, 24.0, 0.0, 0.0, 36.0, 24.0, bitShape2);
	glBitmap(24.0, 24.0, 0.0, 0.0, 36.0, -24.0, bitShape2);
	glFlush();
}
 
void Menu(void){
	// Directions 
	glColor3f(1.0f, 1.0f, 0.0f);
	renderBitmapString(-0.8, 2.7, (void *)font, "Press \"a\" to start animation.");
	renderBitmapString(-0.8, 2.4, (void *)font, "Press \"s\" to pause animation.");
}
// Display Function
void displayMain() {
	// Clear color and depth buffers
	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
	// Model view matrix mode
	glMatrixMode(GL_MODELVIEW);
 
	glLoadIdentity();
	sheep(-1.15, -0.7, -7.0f);
	pig(3.0f, -0.7f, -7.0f);
	grass();
 
	//Ground
	glLoadIdentity();
	glTranslatef(0.0, 0.0, -8.0);
	glColor3f(0.5, 0.5, 0.0);
	glRecti(-5.0, -5.0, 5.0, -1.99999);
 
	//Sun
	glLoadIdentity();
	glTranslatef(2.0, sunPos, -10.0);
	glColor3f(1.0, 1.0, sunColor);
	glutSolidSphere(1.0,15,15);
 
	//Clouds
	glLoadIdentity();
	clouds();
 
	//Rain Drop
	glLoadIdentity();
	rainDrop();
 
	//Message
	glLoadIdentity();
	glTranslatef(-3.0, 0.0, -5.0);
	Menu();
 
	// Double buffering
	glutSwapBuffers();
}
 
void keyboard(unsigned char key, int x, int y)
{
	switch (key) {
	case 'a':
		//All
		glutIdleFunc(animateAll);
		break;
	case 's':
		// stop all
		glutIdleFunc(NULL);
		break;
	default:
		break;
	}
}
 
// Windows redraw function
void winReshapeFcn(GLsizei width, GLsizei height) {
	// Compute aspect ratio of the new window
	if (height == 0)
		height = 1;
	GLfloat aspect = (GLfloat)width / (GLfloat)height;
 
	// Set the viewport 
	// Allows for resizing without major display issues
	glViewport(0, 0, width, height);
 
	// Set the aspect ratio of the clipping volume to match the viewport
	glMatrixMode(GL_PROJECTION);
	glLoadIdentity();
	// Enable perspective projection with fovy, aspect, zNear and zFar
	// This is the camera view and objects align with view frustum	
	gluPerspective(45.0f, aspect, 0.1f, 100.0f);
}
 
/* Main function: GLUT runs as a console application starting at main() */
void main(int argc, char** argv) {
	glutInit(&argc, argv);
	glutInitDisplayMode(GLUT_DOUBLE);
	// Set the window's initial width & height
	glutInitWindowSize(winWidth, winHeight);
	// Position the window's initial top-left corner
	glutInitWindowPosition(50, 50);
	// Create window with the given title
	glutCreateWindow(title);
	// Display Function
	glutDisplayFunc(displayMain);
	// Reshape function
	glutReshapeFunc(winReshapeFcn);
	// Initialize
	init();
 
	// Keyboard functions
	glutKeyboardFunc(keyboard);
 
	// Process Loop
	glutMainLoop();
}
 

prog.cpp:9:1: error: 'GLsizei' does not name a type
 GLsizei winWidth = 800, winHeight = 600;
 ^
prog.cpp:12:17: error: 'GLUT_BITMAP_8_BY_13' was not declared in this scope
 int font = (int)GLUT_BITMAP_8_BY_13;
                 ^
prog.cpp:13:1: error: 'GLfloat' does not name a type
 GLfloat M = 100.0; // mass
 ^
prog.cpp:14:1: error: 'GLfloat' does not name a type
 GLfloat T = 0.00; // time
 ^
prog.cpp:15:1: error: 'GLfloat' does not name a type
 GLfloat skyColor = 1.0;
 ^
prog.cpp:16:1: error: 'GLfloat' does not name a type
 GLfloat sunColor = 0.0;
 ^
prog.cpp:17:1: error: 'GLfloat' does not name a type
 GLfloat sunPos = 2.0;
 ^
prog.cpp:18:1: error: 'GLfloat' does not name a type
 GLfloat sheepHead = 0.5;
 ^
prog.cpp:19:1: error: 'GLfloat' does not name a type
 GLfloat sheepHeadRot = 0.0;
 ^
prog.cpp:20:1: error: 'GLboolean' does not name a type
 GLboolean sheepHeadDown = false;
 ^
prog.cpp:21:1: error: 'GLfloat' does not name a type
 GLfloat pigHead = 0.5;
 ^
prog.cpp:22:1: error: 'GLboolean' does not name a type
 GLboolean pigHeadDown = false;
 ^
prog.cpp:24:1: error: 'GLfloat' does not name a type
 GLfloat rainPos = 0.5;
 ^
prog.cpp: In function 'void init()':
prog.cpp:29:8: error: 'GLubyte' does not name a type
  const GLubyte *Vstr;
        ^
prog.cpp:30:2: error: 'Vstr' was not declared in this scope
  Vstr = glGetString(GL_VERSION);
  ^
prog.cpp:30:21: error: 'GL_VERSION' was not declared in this scope
  Vstr = glGetString(GL_VERSION);
                     ^
prog.cpp:30:31: error: 'glGetString' was not declared in this scope
  Vstr = glGetString(GL_VERSION);
                               ^
prog.cpp:31:10: error: 'stderr' was not declared in this scope
  fprintf(stderr, "Your OpenGL version is %s\n", Vstr); 
          ^
prog.cpp:31:53: error: 'fprintf' was not declared in this scope
  fprintf(stderr, "Your OpenGL version is %s\n", Vstr); 
                                                     ^
prog.cpp:34:27: error: 'skyColor' was not declared in this scope
  glClearColor(0.0f, 0.0f, skyColor, 0.0f);
                           ^
prog.cpp:34:41: error: 'glClearColor' was not declared in this scope
  glClearColor(0.0f, 0.0f, skyColor, 0.0f);
                                         ^
prog.cpp:36:19: error: 'glClearDepth' was not declared in this scope
  glClearDepth(1.0f);
                   ^
prog.cpp:38:11: error: 'GL_DEPTH_TEST' was not declared in this scope
  glEnable(GL_DEPTH_TEST);
           ^
prog.cpp:38:24: error: 'glEnable' was not declared in this scope
  glEnable(GL_DEPTH_TEST);
                        ^
prog.cpp:40:14: error: 'GL_LEQUAL' was not declared in this scope
  glDepthFunc(GL_LEQUAL);
              ^
prog.cpp:40:23: error: 'glDepthFunc' was not declared in this scope
  glDepthFunc(GL_LEQUAL);
                       ^
prog.cpp: In function 'void renderBitmapString(float, float, void*, char*)':
prog.cpp:49:26: error: 'glRasterPos3f' was not declared in this scope
  glRasterPos3f(x, y, -7.0);
                          ^
prog.cpp:51:31: error: 'glutBitmapCharacter' was not declared in this scope
   glutBitmapCharacter(font, *c);
                               ^
prog.cpp: In function 'void animateAll()':
prog.cpp:57:8: error: 'WAITMS' was not declared in this scope
  Sleep(WAITMS);
        ^
prog.cpp:57:14: error: 'Sleep' was not declared in this scope
  Sleep(WAITMS);
              ^
prog.cpp:59:6: error: 'skyColor' was not declared in this scope
  if (skyColor <= 0.0){
      ^
prog.cpp:61:3: error: 'GLfloat' was not declared in this scope
   GLfloat mat_specular[] = { 0.5, 0.5, 0.5, 1.0 };
   ^
prog.cpp:62:11: error: expected ';' before 'mat_shininess'
   GLfloat mat_shininess[] = { 100.0 };
           ^
prog.cpp:63:11: error: expected ';' before 'light_position'
   GLfloat light_position[] = { 4.0, sunPos, -4.0, 0.0 };
           ^
prog.cpp:65:16: error: 'GL_FRONT' was not declared in this scope
   glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
                ^
prog.cpp:65:26: error: 'GL_SPECULAR' was not declared in this scope
   glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
                          ^
prog.cpp:65:39: error: 'mat_specular' was not declared in this scope
   glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
                                       ^
prog.cpp:65:51: error: 'glMaterialfv' was not declared in this scope
   glMaterialfv(GL_FRONT, GL_SPECULAR, mat_specular);
                                                   ^
prog.cpp:67:26: error: 'GL_SHININESS' was not declared in this scope
   glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
                          ^
prog.cpp:67:40: error: 'mat_shininess' was not declared in this scope
   glMaterialfv(GL_FRONT, GL_SHININESS, mat_shininess);
                                        ^
prog.cpp:69:13: error: 'GL_LIGHT0' was not declared in this scope
   glLightfv(GL_LIGHT0, GL_POSITION, light_position);
             ^
prog.cpp:69:24: error: 'GL_POSITION' was not declared in this scope
   glLightfv(GL_LIGHT0, GL_POSITION, light_position);
                        ^
prog.cpp:69:37: error: 'light_position' was not declared in this scope
   glLightfv(GL_LIGHT0, GL_POSITION, light_position);
                                     ^
prog.cpp:69:51: error: 'glLightfv' was not declared in this scope
   glLightfv(GL_LIGHT0, GL_POSITION, light_position);
                                                   ^
prog.cpp:71:12: error: 'GL_LIGHTING' was not declared in this scope
   glEnable(GL_LIGHTING);
            ^
prog.cpp:71:23: error: 'glEnable' was not declared in this scope
   glEnable(GL_LIGHTING);
                       ^
prog.cpp:75:13: error: 'GL_LIGHTING' was not declared in this scope
   glDisable(GL_LIGHTING);
             ^
prog.cpp:75:24: error: 'glDisable' was not declared in this scope
   glDisable(GL_LIGHTING);
                        ^
prog.cpp:79:2: error: 'GLfloat' was not declared in this scope
  GLfloat accel = 9.8 * M * pow(T, 2.0);
  ^
prog.cpp:80:6: error: 'T' was not declared in this scope
  if (T < 0.03){
      ^
prog.cpp:83:2: error: 'rainPos' was not declared in this scope
  rainPos -= accel;
  ^
prog.cpp:83:13: error: 'accel' was not declared in this scope
  rainPos -= accel;
             ^
prog.cpp:85:3: error: 'T' was not declared in this scope
   T = 0.0;
   ^
prog.cpp:90:6: error: 'sheepHeadDown' was not declared in this scope
  if (sheepHeadDown == false){
      ^
prog.cpp:91:7: error: 'sheepHead' was not declared in this scope
   if (sheepHead == 0.5 && sheepHeadRot > -50.0){
       ^
prog.cpp:91:27: error: 'sheepHeadRot' was not declared in this scope
   if (sheepHead == 0.5 && sheepHeadRot > -50.0){
                           ^
prog.cpp:102:7: error: 'sheepHead' was not declared in this scope
   if (sheepHead < 0.5){
       ^
prog.cpp:105:32: error: 'sheepHeadRot' was not declared in this scope
   else if (sheepHead == 0.5 && sheepHeadRot < 0.0){
                                ^
prog.cpp:112:6: error: 'pigHeadDown' was not declared in this scope
  if (pigHeadDown == false){
      ^
prog.cpp:113:7: error: 'pigHead' was not declared in this scope
   if (pigHead > -0.3){
       ^
prog.cpp:121:7: error: 'pigHead' was not declared in this scope
   if (pigHead < 0.5){
       ^
prog.cpp:128:6: error: 'sunPos' was not declared in this scope
  if (sunPos > 0.0){
      ^
prog.cpp:131:6: error: 'sunPos' was not declared in this scope
  if (sunPos <= 0.0 && sunPos > -2.2){
      ^
prog.cpp:133:7: error: 'skyColor' was not declared in this scope
   if (skyColor > 0.0){
       ^
prog.cpp:136:28: error: 'skyColor' was not declared in this scope
   glClearColor(0.0f, 0.0f, skyColor, 0.0f);
                            ^
prog.cpp:136:42: error: 'glClearColor' was not declared in this scope
   glClearColor(0.0f, 0.0f, skyColor, 0.0f);
                                          ^
prog.cpp:138:6: error: 'sunPos' was not declared in this scope
  if (sunPos <= -2.2 && sunColor == 0.0){
      ^
prog.cpp:138:24: error: 'sunColor' was not declared in this scope
  if (sunPos <= -2.2 && sunColor == 0.0){
                        ^
prog.cpp:146:6: error: 'sunPos' was not declared in this scope
  if (sunPos > 4.0 && sunColor == 0.0 && skyColor < 1.0){
      ^
prog.cpp:146:22: error: 'sunColor' was not declared in this scope
  if (sunPos > 4.0 && sunColor == 0.0 && skyColor < 1.0){
                      ^
prog.cpp:146:41: error: 'skyColor' was not declared in this scope
  if (sunPos > 4.0 && sunColor == 0.0 && skyColor < 1.0){
                                         ^
prog.cpp:148:42: error: 'glClearColor' was not declared in this scope
   glClearColor(0.0f, 0.0f, skyColor, 0.0f);
                                          ^
prog.cpp:151:20: error: 'glutPostRedisplay' was not declared in this scope
  glutPostRedisplay();
                    ^
prog.cpp: At global scope:
prog.cpp:154:12: error: variable or field 'sheep' declared void
 void sheep(GLdouble x, GLdouble y, GLdouble z){
            ^
prog.cpp:154:12: error: 'GLdouble' was not declared in this scope
prog.cpp:154:24: error: 'GLdouble' was not declared in this scope
 void sheep(GLdouble x, GLdouble y, GLdouble z){
                        ^
prog.cpp:154:36: error: 'GLdouble' was not declared in this scope
 void sheep(GLdouble x, GLdouble y, GLdouble z){
                                    ^
prog.cpp:187:10: error: variable or field 'pig' declared void
 void pig(GLdouble x, GLdouble y, GLdouble z){
          ^
prog.cpp:187:10: error: 'GLdouble' was not declared in this scope
prog.cpp:187:22: error: 'GLdouble' was not declared in this scope
 void pig(GLdouble x, GLdouble y, GLdouble z){
                      ^
prog.cpp:187:34: error: 'GLdouble' was not declared in this scope
 void pig(GLdouble x, GLdouble y, GLdouble z){
                                  ^
prog.cpp: In function 'void triangle(double, double, double)':
prog.cpp:220:17: error: 'glLoadIdentity' was not declared in this scope
  glLoadIdentity();
                 ^
prog.cpp:221:22: error: 'glTranslatef' was not declared in this scope
  glTranslatef(x, y, z);
                      ^
prog.cpp:222:25: error: 'glColor3f' was not declared in this scope
  glColor3f(0.0, 1.0, 0.0);
                         ^
prog.cpp:223:27: error: 'glScalef' was not declared in this scope
  glScalef(0.1f, 0.1f, 0.1f);
                           ^
prog.cpp:224:10: error: 'GL_POLYGON' was not declared in this scope
  glBegin(GL_POLYGON);
          ^
prog.cpp:224:20: error: 'glBegin' was not declared in this scope
  glBegin(GL_POLYGON);
                    ^
prog.cpp:225:22: error: 'glVertex2i' was not declared in this scope
   glVertex2i(0.0, 0.0);
                      ^
prog.cpp:228:8: error: 'glEnd' was not declared in this scope
  glEnd();
        ^
prog.cpp: In function 'void grass()':
prog.cpp:233:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp:237:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp:241:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp:245:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp:249:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp:253:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp:257:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp:261:18: error: 'glLoadIdentity' was not declared in this scope
   glLoadIdentity();
                  ^
prog.cpp: In function 'void clouds()':
prog.cpp:268:32: error: 'glTranslatef' was not declared in this scope
  glTranslatef(-2.0f, 1.0, -8.0f);
                                ^
prog.cpp:269:25: error: 'glColor3f' was not declared in this scope
  glColor3f(0.5, 0.5, 0.5);
                         ^
prog.cpp:270:30: error: 'glutSolidSphere' was not declared in this scope
  glutSolidSphere(0.25, 15, 15);
                              ^
prog.cpp: In function 'void rainDrop()':
prog.cpp:286:25: error: 'glColor3f' was not declared in this scope
  glColor3f(0.0, 1.0, 1.0);
                         ^
prog.cpp:287:2: error: 'GLubyte' was not declared in this scope
  GLubyte bitShape2[72] = {
  ^
prog.cpp:313:16: error: 'GL_UNPACK_ALIGNMENT' was not declared in this scope
  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
                ^
prog.cpp:313:38: error: 'glPixelStorei' was not declared in this scope
  glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
                                      ^
prog.cpp:315:22: error: 'rainPos' was not declared in this scope
  glTranslatef(-0.1f, rainPos, -9.0f);
                      ^
prog.cpp:315:36: error: 'glTranslatef' was not declared in this scope
  glTranslatef(-0.1f, rainPos, -9.0f);
                                    ^
prog.cpp:316:25: error: 'glRasterPos2i' was not declared in this scope
  glRasterPos2i(-4.0, 0.0);
                         ^
prog.cpp:318:44: error: 'bitShape2' was not declared in this scope
  glBitmap(24.0, 24.0, 0.0, 0.0, 36.0, 0.0, bitShape2);
                                            ^
prog.cpp:318:53: error: 'glBitmap' was not declared in this scope
  glBitmap(24.0, 24.0, 0.0, 0.0, 36.0, 0.0, bitShape2);
                                                     ^
prog.cpp:323:10: error: 'glFlush' was not declared in this scope
  glFlush();
          ^
prog.cpp: In function 'void Menu()':
prog.cpp:328:28: error: 'glColor3f' was not declared in this scope
  glColor3f(1.0f, 1.0f, 0.0f);
                            ^
prog.cpp:329:79: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
  renderBitmapString(-0.8, 2.7, (void *)font, "Press \"a\" to start animation.");
                                                                               ^
prog.cpp:330:79: warning: deprecated conversion from string constant to 'char*' [-Wwrite-strings]
  renderBitmapString(-0.8, 2.4, (void *)font, "Press \"s\" to pause animation.");
                                                                               ^
prog.cpp: In function 'void displayMain()':
prog.cpp:335:10: error: 'GL_COLOR_BUFFER_BIT' was not declared in this scope
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
          ^
prog.cpp:335:32: error: 'GL_DEPTH_BUFFER_BIT' was not declared in this scope
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
                                ^
prog.cpp:335:51: error: 'glClear' was not declared in this scope
  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
                                                   ^
prog.cpp:338:15: error: 'GL_MODELVIEW' was not declared in this scope
  glMatrixMode(GL_MODELVIEW);
               ^
prog.cpp:338:27: error: 'glMatrixMode' was not declared in this scope
  glMatrixMode(GL_MODELVIEW);
                           ^
prog.cpp:340:17: error: 'glLoadIdentity' was not declared in this scope
  glLoadIdentity();
                 ^
prog.cpp:341:26: error: 'sheep' was not declared in this scope
  sheep(-1.15, -0.7, -7.0f);
                          ^
prog.cpp:342:24: error: 'pig' was not declared in this scope
  pig(3.0f, -0.7f, -7.0f);
                        ^
prog.cpp:347:29: error: 'glTranslatef' was not declared in this scope
  glTranslatef(0.0, 0.0, -8.0);
                             ^
prog.cpp:348:25: error: 'glColor3f' was not declared in this scope
  glColor3f(0.5, 0.5, 0.0);
                         ^
prog.cpp:349:35: error: 'glRecti' was not declared in this scope
  glRecti(-5.0, -5.0, 5.0, -1.99999);
                                   ^
prog.cpp:353:20: error: 'sunPos' was not declared in this scope
  glTranslatef(2.0, sunPos, -10.0);
                    ^
prog.cpp:354:22: error: 'sunColor' was not declared in this scope
  glColor3f(1.0, 1.0, sunColor);
                      ^
prog.cpp:355:27: error: 'glutSolidSphere' was not declared in this scope
  glutSolidSphere(1.0,15,15);
                           ^
prog.cpp:371:18: error: 'glutSwapBuffers' was not declared in this scope
  glutSwapBuffers();
                  ^
prog.cpp: In function 'void keyboard(unsigned char, int, int)':
prog.cpp:379:26: error: 'glutIdleFunc' was not declared in this scope
   glutIdleFunc(animateAll);
                          ^
prog.cpp:383:16: error: 'NULL' was not declared in this scope
   glutIdleFunc(NULL);
                ^
prog.cpp: At global scope:
prog.cpp:391:20: error: variable or field 'winReshapeFcn' declared void
 void winReshapeFcn(GLsizei width, GLsizei height) {
                    ^
prog.cpp:391:20: error: 'GLsizei' was not declared in this scope
prog.cpp:391:35: error: 'GLsizei' was not declared in this scope
 void winReshapeFcn(GLsizei width, GLsizei height) {
                                   ^
prog.cpp:410:32: error: '::main' must return 'int'
 void main(int argc, char** argv) {
                                ^
prog.cpp: In function 'int main(int, char**)':
prog.cpp:411:22: error: 'glutInit' was not declared in this scope
  glutInit(&argc, argv);
                      ^
prog.cpp:412:22: error: 'GLUT_DOUBLE' was not declared in this scope
  glutInitDisplayMode(GLUT_DOUBLE);
                      ^
prog.cpp:412:33: error: 'glutInitDisplayMode' was not declared in this scope
  glutInitDisplayMode(GLUT_DOUBLE);
                                 ^
prog.cpp:414:21: error: 'winWidth' was not declared in this scope
  glutInitWindowSize(winWidth, winHeight);
                     ^
prog.cpp:414:31: error: 'winHeight' was not declared in this scope
  glutInitWindowSize(winWidth, winHeight);
                               ^
prog.cpp:414:40: error: 'glutInitWindowSize' was not declared in this scope
  glutInitWindowSize(winWidth, winHeight);
                                        ^
prog.cpp:416:31: error: 'glutInitWindowPosition' was not declared in this scope
  glutInitWindowPosition(50, 50);
                               ^
prog.cpp:418:24: error: 'glutCreateWindow' was not declared in this scope
  glutCreateWindow(title);
                        ^
prog.cpp:420:29: error: 'glutDisplayFunc' was not declared in this scope
  glutDisplayFunc(displayMain);
                             ^
prog.cpp:422:18: error: 'winReshapeFcn' was not declared in this scope
  glutReshapeFunc(winReshapeFcn);
                  ^
prog.cpp:422:31: error: 'glutReshapeFunc' was not declared in this scope
  glutReshapeFunc(winReshapeFcn);
                               ^
prog.cpp:427:27: error: 'glutKeyboardFunc' was not declared in this scope
  glutKeyboardFunc(keyboard);
                           ^
prog.cpp:430:15: error: 'glutMainLoop' was not declared in this scope
  glutMainLoop();
               ^

Standard output is empty