c_cpp C ++ Spinning Cube

Posted 2021-05-14

#include GLUT/glut.h
  #include iostream
	#include stdlib.h
	#include math.h
	#include cmath

	using namespace std;


	class wcPt3D		// class to represent a 2D point
	{
	public:
		GLfloat x, y, z;
	};

	GLfloat xRotated, yRotated, zRotated;
	GLfloat xScale = 1, yScale = 1, zScale = 1;
	GLfloat xTranslate = 0, yTranslate = 0, zTranslate = 02;

	string mode = "none";

	wcPt3D top[3];
	wcPt3D bottom[3];
	wcPt3D left[3];
	wcPt3D right[3];
	wcPt3D front[3];
	wcPt3D back[3];


	void init(void)
	{
	    glClearColor(1.0, 1.0, 1.0, 1.0);

	}

	void DrawCube(void)
	{

	    glMatrixMode(GL_MODELVIEW);
	    // clear the drawing buffer.
	    glClear(GL_COLOR_BUFFER_BIT);
	    glLoadIdentity();
	    glTranslatef(0.0,0.0,-10.5);

	    glPushMatrix();

	    glRotatef(xRotated,1.0,0.0,0.0); // rotation about Y axis
	    glRotatef(yRotated,0.0,1.0,0.0); // rotation about Z axis

	    glTranslatef(xTranslate, yTranslate, zTranslate);

	    glScalef(xScale, yScale, zScale);

	    glRotatef(zRotated,0.0,0.0,1.0);
	    glBegin(GL_QUADS);        // Draw The Cube Using quads
	    glColor3f(0.0f,1.0f,0.0f);    // Color Blue
	        glVertex3f( 1.0f, 1.0f,-1.0f);    // Top Right Of The Quad (Top)
	        glVertex3f(-1.0f, 1.0f,-1.0f);    // Top Left Of The Quad (Top)
	        glVertex3f(-1, 1, 1);    // Bottom Left Of The Quad (Top)
	        glVertex3f( 1.0f, 1.0f, 1.0f);    // Bottom Right Of The Quad (Top)
	    glColor3f(1.0f,0.5f,0.0f);    // Color Orange
	        glVertex3f( 1.0f,-1.0f, 1.0f);    // Top Right Of The Quad (Bottom)
	        glVertex3f(-1.0f,-1.0f, 1.0f);    // Top Left Of The Quad (Bottom)
	        glVertex3f(-1.0f,-1.0f,-1.0f);    // Bottom Left Of The Quad (Bottom)
	        glVertex3f( 1.0f,-1.0f,-1.0f);    // Bottom Right Of The Quad (Bottom)
	    glColor3f(1.0f,0.0f,0.0f);    // Color Red
	        glVertex3f( 1.0f, 1.0f, 1.0f);    // Top Right Of The Quad (Front)
	        glVertex3f(-1.0f, 1.0f, 1.0f);    // Top Left Of The Quad (Front)
	        glVertex3f(-1.0f,-1.0f, 1.0f);    // Bottom Left Of The Quad (Front)
	        glVertex3f( 1.0f,-1.0f, 1.0f);    // Bottom Right Of The Quad (Front)
	    glColor3f(1.0f,1.0f,0.0f);    // Color Yellow
	        glVertex3f( 1.0f,-1.0f,-1.0f);    // Top Right Of The Quad (Back)
	        glVertex3f(-1.0f,-1.0f,-1.0f);    // Top Left Of The Quad (Back)
	        glVertex3f(-1.0f, 1.0f,-1.0f);    // Bottom Left Of The Quad (Back)
	        glVertex3f( 1.0f, 1.0f,-1.0f);    // Bottom Right Of The Quad (Back)
	    glColor3f(0.0f,0.0f,1.0f);    // Color Blue
	        glVertex3f(-1.0f, 1.0f, 1.0f);    // Top Right Of The Quad (Left)
	        glVertex3f(-1.0f, 1.0f,-1.0f);    // Top Left Of The Quad (Left)
	        glVertex3f(-1.0f,-1.0f,-1.0f);    // Bottom Left Of The Quad (Left)
	        glVertex3f(-1.0f,-1.0f, 1.0f);    // Bottom Right Of The Quad (Left)
	    glColor3f(1.0f,0.0f,1.0f);    // Color Violet
	        glVertex3f( 1.0f, 1.0f,-1.0f);    // Top Right Of The Quad (Right)
	        glVertex3f( 1.0f, 1.0f, 1.0f);    // Top Left Of The Quad (Right)
	        glVertex3f( 1.0f,-1.0f, 1.0f);    // Bottom Left Of The Quad (Right)
	        glVertex3f( 1.0f,-1.0f,-1.0f);    // Bottom Right Of The Quad (Right)
	    glEnd();            // End Drawing The Cube

	    //glPopMatrix();
	    //glutSwapBuffers();

	    glFlush();
	}


	void animation(void)
	{

	    if(mode=="spin"){
	        yRotated += 0.5;
	        xRotated += 0.6;
	    }

	    DrawCube();
	}

	void reshape(int x, int y)
	{
	    if (y == 0 || x == 0) return;  //Nothing is visible then, so return
	    //Set a new projection matrix
	    glMatrixMode(GL_PROJECTION);
	    glLoadIdentity();
	    //Angle of view:40 degrees
	    //Near clipping plane distance: 0.5
	    //Far clipping plane distance: 20.0

	    gluPerspective(40.0,(GLdouble)x/(GLdouble)y,0.5,20.0);
	    glMatrixMode(GL_MODELVIEW);
	    glViewport(0,0,x,y);  //Use the whole window for rendering


	}

	void key(unsigned char key, int x, int y){
	    switch(key){
	        case 115:
	            if(mode=="spin"){
	                mode = "none";
	            } else {
	                mode = "spin";
	            }
	            glutPostRedisplay();
	            break;
	        case 103: //g
	            xScale = xScale + .1;
	            yScale = yScale + .1;
	            zScale = zScale + .1;

	            glutPostRedisplay();
	            break;
	        case 'h':
	            xScale = xScale - .1;
	            yScale = yScale - .1;
	            zScale = zScale - .1;

	            glutPostRedisplay();
	            break;
	        case 'd':
	            xTranslate = xTranslate + .1;
	            glutPostRedisplay();
	            break;
	        case 'f':
	            xTranslate = xTranslate - .1;
	            glutPostRedisplay();
	            break;
	        case 'j':
	            xRotated = xRotated + 1;
	            //yRotated = yRotated + 1;
	            glutPostRedisplay();
	            break;
	        case 'k':
	            xRotated = xRotated - 1;
	            //yRotated = yRotated - 1;
	            glutPostRedisplay();
	            break;
	    }

	}

	int main(int argc, char** argv){

	    glutInit(&argc, argv);
	    //we initizlilze the glut. functions
	    glutInitDisplayMode(GLUT_SINGLE|GLUT_RGB);
	    glutInitWindowPosition(10, 10);
	    glutInitWindowSize(1000, 1000);
	    glutCreateWindow(argv[0]);
	    init();
	    glutDisplayFunc(DrawCube);
	    glutReshapeFunc(reshape);
	    glutKeyboardFunc(key);
	    //Set the function for the animation.
	    glutIdleFunc(animation);
	    glutMainLoop();
	    return 0;
	}