Lab_7/15var (IV semester) CG

#include "stdafx.h"
#include <windows.h>
#include <iostream>
#include "glut.h"

static int w = 0, h = 0;
static float Angle = 0.0f;
float scaleX = 100, scaleY = 100, scaleZ = 100;
int x = 0, y = 0, z = 0;
void Init(void) {
    glClearColor(0.8f, 0.9f, 0.9f, 1.0f);
}

void Update(void) {
    Angle += 0.05f;
    glClear(GL_COLOR_BUFFER_BIT);
    glLoadIdentity();

    gluLookAt(scaleX, scaleY, scaleZ, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f);

    glRotatef((GLfloat)Angle, 0.0f, 1.0f, 0.0f);
    glTranslatef(x, y, z);
    glBegin(GL_TRIANGLES);
    //1
    glColor3f(0.9f, 0.2f, 0.5f);
    glVertex3f(-75.0f, 0.0f, -50.0f);
    glVertex3f(-75.0f, 0.0f, 50.0f);
    glVertex3f(75.0f, 0.0f, 50.0f);
    //2
    glColor3f(0.5f, 0.2f, 0.9f);
    glVertex3f(-75.0f, 0.0f, -50.0f);
    glVertex3f(75.0f, 0.0f, -50.0f);
    glVertex3f(75.0f, 0.0f, 50.0f);
    glEnd();


    glLineWidth(3.0f);

    //Green y
    glBegin(GL_LINE_STRIP);
    glColor3ub(0, 255, 0);

    glVertex3f(-75, 0, -50);
    glVertex3f(-75, 3000, -50);
    glEnd();

    //Red x
    glBegin(GL_LINE_STRIP);
    glColor3ub(255, 0, 0);

    glVertex3f(-75, 0, -50);
    glVertex3f(3000, 0, -50);
    glEnd();

    //Blue z
    glBegin(GL_LINE_STRIP);
    glColor3ub(0, 0, 255);

    glVertex3f(-75, 0, -50);
    glVertex3f(-75, 0, 300);
    glEnd();

    glLineWidth(10.0f);

    //Black
    glBegin(GL_LINE_STRIP);
    glColor3ub(0, 0, 0);
    glVertex3f(-75, 50, -30);
    glVertex3f(90, 50, -30);
    glEnd();

    //Blue
    glEnable(GL_LINE_STIPPLE);
    glLineStipple(2, 0x00FF);
    glColor3ub(0, 0, 255);
    glBegin(GL_LINE_LOOP);
    glVertex3f(-75, 70, -30);
    glVertex3f(90, 0, -30);
    glEnd();
    glDisable(GL_LINE_STIPPLE);
    ///////////////////////////

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(30, 0, 30);
    glVertex3f(30, 60, 30);
    glVertex3f(0, 60, 30);
    glVertex3f(0, 0, 30);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(30, 0, 0);
    glVertex3f(30, 60, 0);
    glVertex3f(0, 60, 0);
    glVertex3f(0, 0, 0);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(30, 0, 0);
    glVertex3f(30, 30, 0);
    glVertex3f(30, 30, 30);
    glVertex3f(30, 0, 30);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(0, 0, 30);
    glVertex3f(0, 60, 30);
    glVertex3f(0, 60, 0);
    glVertex3f(0, 0, 0);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(90, 60, 30);
    glVertex3f(90, 60, 0);
    glVertex3f(0, 60, 0);
    glVertex3f(0, 60, 30);
    glEnd();
    //
    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(90, 30, 30);
    glVertex3f(90, 30, 0);
    glVertex3f(0, 30, 0);
    glVertex3f(0, 30, 30);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(90, 30, 30);
    glVertex3f(90, 60, 30);
    glVertex3f(90, 60, 0);
    glVertex3f(90, 30, 0);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(90, 30, 0);
    glVertex3f(90, 60, 0);
    glVertex3f(0, 60, 0);
    glVertex3f(0, 30, 0);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(90, 30, 30);
    glVertex3f(90, 60, 30);
    glVertex3f(0, 60, 30);
    glVertex3f(0, 30, 30);
    glEnd();

    glBegin(GL_POLYGON);
    glColor3f(255, 0, 0);
    glVertex3f(30, 0, 0);
    glVertex3f(30, 0, 30);
    glVertex3f(0, 0, 30);
    glVertex3f(0, 0, 0);
    glEnd();

    glFlush();
    glutSwapBuffers();
}


void Reshape(int width, int height) {
    w = width;
    h = height;
    glViewport(0, 0, w, h);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluPerspective(65.0f, w / h, 1.0f, 1000.0f);
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();

}


void keyboard(unsigned char key, int xx, int yy)
{
    std::cout << "Key pressed: " << key << std::endl;
    switch (key) {
    case 'a':
        std::cout << "!Rotate counter-clockwise" << std::endl;
        Angle += 5.0f;
        glutPostRedisplay();
        break;
    case 'd':
        std::cout << "Rotate Clockwise" << std::endl;
        Angle -= 5.0f;
        glutPostRedisplay();
        break;
    case 'w':
        std::cout << "Offset Left" << std::endl;
        x += 10;
        glutPostRedisplay();
        break;
    case 's':
        std::cout << "Offset Down" << std::endl;
        y += 10;
        glutPostRedisplay();
        break;
    case 'r':
        std::cout << "Zoom in X in 2 times" << std::endl;
        scaleX = 200;
        scaleY = 100;
        scaleZ = 100;
        glutPostRedisplay();
        break;
    case 'f':
        std::cout << "Y-scale reduction in 2 times" << std::endl;
        scaleX = 100;
        scaleY = 50;
        scaleZ = 100;
        glutPostRedisplay();
        break;
    case 'e':
        std::cout << "Normal" << std::endl;
        scaleX = 100;
        scaleY = 100;
        scaleZ = 100;
        glutPostRedisplay();
        break;
    default:
        break;
    }
}

int main(int argc, char *argv[]) {
    glutInit(&argc, argv);
    glutInitWindowSize(800, 600);
    glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
    glutCreateWindow("Computer Graphics #7");
    glutDisplayFunc(Update);
    glutReshapeFunc(Reshape);
    glutKeyboardFunc(keyboard);
    Init();
    glutMainLoop();
    return 0;
}