Lab_10/15var (IV semester) CG

#include "stdafx.h"
#include <windows.h>
#include "glut.h"
#include <math.h>
#include <iostream>
#include <stdio.h>
#include <malloc.h>
//  Подключает сами библиотеки: opengl32.dll, glu32.dll и glut32.dll
#pragma comment(lib, "opengl32.lib")
#pragma comment(lib, "glu32.lib")
#pragma comment(lib, "glut32.lib")

#define GL_BGR 0x80E0
#define coord1 glTexCoord2d(0,0);
#define coord2 glTexCoord2d(0,1);
#define coord3 glTexCoord2d(1,1);
#define coord4 glTexCoord2d(1,0);


static int w = 0, h = 0;
static float Angle = 0.0f;
float scaleX = 150, scaleY = 125, scaleZ = 150;
int x = 0, y = 0, z = 0;
GLuint  textura_id;
int sample = 1;
int angle = 0;
double Width = 800, Height = 800;
struct textura_struct{
    int W;
    int H;
    unsigned char *Image;
}get_textura;

int LoadTexture(char *FileName){
    FILE *F;
    if ((F = fopen(FileName, "rb")) == NULL)
        return 0;
    fseek(F, 18, SEEK_SET);
    fread(&(get_textura.W), 2, 1, F);
    fseek(F, 2, SEEK_CUR);
    fread(&(get_textura.H), 2, 1, F);
    printf("%d x %d\n", get_textura.W, get_textura.H);
    if ((get_textura.Image = (unsigned char *)malloc(sizeof(unsigned char)* 3 * get_textura.W * get_textura.H)) == NULL) {
        fclose(F);
        return 0;
    }
    fseek(F, 30, SEEK_CUR);
    fread(get_textura.Image, 3, get_textura.W * get_textura.H, F);
    glGenTextures(1, &textura_id);
    glBindTexture(GL_TEXTURE_2D, textura_id);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    gluBuild2DMipmaps(GL_TEXTURE_2D, 3, get_textura.W, get_textura.H, GL_BGR, GL_UNSIGNED_BYTE, get_textura.Image);
    free(get_textura.Image);
    fclose(F);
    return 1;
}
void Init(void) {
    glClearColor(0.8f, 0.9f, 0.9f, 1.0f);
}

void Display(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);
    ///////////////////////////
    glEnable(GL_TEXTURE_2D);
    glBindTexture(GL_TEXTURE_2D, textura_id);

    glNormal3f(0.0f, 0.0f, 1.0f);
    coord1 glVertex3f(0.0f, -1.0f, 1.0f); // Точка 1 (Перед)
    coord2 glVertex3f(-1.0f, 1.0f, 1.0f); // Точка 2 (Перед)
    coord3 glVertex3f(1.0f, 1.0f, 1.0f); // Точка 3 (Перед)
    coord4 glVertex3f(0.0f, -1.0f, -2.0f);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(30, 0, 30);
    coord2 glVertex3f(30, 60, 30);
    coord3 glVertex3f(0, 60, 30);
    coord4 glVertex3f(0, 0, 30);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(30, 0, 0);
    coord2 glVertex3f(30, 60, 0);
    coord3 glVertex3f(0, 60, 0);
    coord4 glVertex3f(0, 0, 0);
    glEnd();

    glBegin(GL_POLYGON);
    coord1; glVertex3f(30, 0, 0);
    coord2 glVertex3f(30, 30, 0);
    coord3 glVertex3f(30, 30, 30);
    coord4 glVertex3f(30, 0, 30);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(0, 0, 30);
    coord2 glVertex3f(0, 60, 30);
    coord3 glVertex3f(0, 60, 0);
    coord4 glVertex3f(0, 0, 0);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(90, 60, 30);
    coord2 glVertex3f(90, 60, 0);
    coord3 glVertex3f(0, 60, 0);
    coord4 glVertex3f(0, 60, 30);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(90, 30, 30);
    coord2 glVertex3f(90, 30, 0);
    coord3 glVertex3f(0, 30, 0);
    coord4 glVertex3f(0, 30, 30);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(90, 30, 30);
    coord2 glVertex3f(90, 60, 30);
    coord3 glVertex3f(90, 60, 0);
    coord4 glVertex3f(90, 30, 0);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(90, 30, 0);
    coord2 glVertex3f(90, 60, 0);
    coord3 glVertex3f(0, 60, 0);
    coord4 glVertex3f(0, 30, 0);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(90, 30, 30);
    coord2 glVertex3f(90, 60, 30);
    coord3 glVertex3f(0, 60, 30);
    coord4 glVertex3f(0, 30, 30);
    glEnd();

    glBegin(GL_POLYGON);
    coord1 glVertex3f(30, 0, 0);
    coord2 glVertex3f(30, 0, 30);
    coord3 glVertex3f(0, 0, 30);
    coord4 glVertex3f(0, 0, 0);
    glEnd();

    glDisable(GL_TEXTURE_2D);
    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);
        glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE);
        glutInitWindowSize(Width, Height);
        glutInitWindowPosition(200, 200);
        glutCreateWindow("Lab 10");
        glClearColor(0.0, 0.0, 0.0, 1.0);
        glutDisplayFunc(Display);
        glutReshapeFunc(Reshape);
        if (LoadTexture((char *)"images5.bmp") != 1)
            std::cout << "Images not load\n";
        else
            std::cout << "Images load\n";
        glutKeyboardFunc(keyboard);
        glutMainLoop();
        return 0;
}