Tutka_3

#include "SDL2/SDL.h"
#include "GL/gl.h"
#include "GL/glu.h"
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
//задаем размеры окна
#define WINDOWHEIGHT 240
#define WINDOWWIDTH 360

struct{ GLubyte red, green, blue; } pixel;

const float PI = 3.141592f;

float x, y, z, alpha, beta; // Storage for coordinates and angles
float radius = 1.0f;
int gradation = 20;

//Параметры цилиндра
const float l = 2.0f;
const float r = 0.2f;

void DrawGLScene();


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

 if ( SDL_Init(SDL_INIT_VIDEO) < 0 ){
   printf("Unable to init SDL: %s\n", SDL_GetError());
   exit(1);
 }

 SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
 SDL_GL_SetAttribute(SDL_GL_RED_SIZE, 5);
 SDL_GL_SetAttribute(SDL_GL_GREEN_SIZE, 6);
 SDL_GL_SetAttribute(SDL_GL_BLUE_SIZE, 5);

 SDL_Window* window = SDL_CreateWindow("SDL2/OpenGL Demo", 60, 60, WINDOWWIDTH, WINDOWHEIGHT, SDL_WINDOW_OPENGL|SDL_WINDOW_RESIZABLE);
 SDL_Window* render = SDL_CreateWindow("SDL2/Raytracing", 100+WINDOWWIDTH, 60, WINDOWWIDTH, WINDOWHEIGHT, SDL_WINDOW_RESIZABLE); //приплюсовали чтобы окна стояли рядом, а не на друг друге

 SDL_Renderer* renderer = SDL_CreateRenderer(render, -1, SDL_RENDERER_ACCELERATED); // создание рендера

 if ( window == NULL ){
   printf("Unable to set 640x480 video: %s\n", SDL_GetError());
   exit(1);
 }
 if ( render == NULL ){
   printf("Unable to set 640x480 render: %s\n", SDL_GetError());
   exit(1);
 }

/* Create an OpenGL context associated with the window. */
 SDL_GLContext glcontext = SDL_GL_CreateContext(window);

 /* This makes our buffer swap syncronized with the monitor's vertical refresh */

 /* Clear context */
 glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
 glClearDepth(1.0);
 glDepthFunc(GL_LESS);
 glEnable(GL_DEPTH_TEST);
 glShadeModel(GL_SMOOTH);
 glMatrixMode(GL_PROJECTION); // Apply following to projection matrix - is this correct?
 glLoadIdentity(); // Reset first
 gluPerspective(45.0f,640/480,0.1f,200.0f); // Set perspective
 glMatrixMode(GL_MODELVIEW); // Apply following to modelview - should glViewport come under here?

 int done=0;
 while(done == 0){

 //QUIT PROGRAMM BY PRESSING ESCAPE BUTTON
   SDL_Event event;

   while ( SDL_PollEvent(&event) ){
     if ( event.type == SDL_QUIT ){
      done = 1;
     }
     if ( event.type == SDL_KEYDOWN ){
       if ( event.key.keysym.sym == SDLK_ESCAPE ){
         done = 1;
       }
     }
   }
/* Swap our buffer to display the current contents of buffer on screen */
   DrawGLScene();
   glFlush();
   SDL_GL_SwapWindow(window);

// Перерисовка нашего файтера

for (int j = 0; j < WINDOWHEIGHT; j++){
                     for (int i = 0; i < WINDOWWIDTH; i++){
                            glReadPixels(i, j, 1, 1, GL_RGB, GL_UNSIGNED_BYTE, &pixel);
                                if (pixel.red > 0 || pixel.green > 0 || pixel.blue > 0){




                                SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
                                SDL_RenderDrawPoint(renderer, i, WINDOWHEIGHT-j);
                                SDL_RenderPresent(renderer);
                                }
                            }
            };

   //fps++;
 }
return 0;

}

void DrawGLScene(){

  glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

  glLoadIdentity();
  glTranslatef(0.0f,0.0f,-8.0f); // сдвиг системы координат - в нашем случае по z

  glRotatef(400, 1.0f, 0.0f, 0.0f); // вращение вокруг оси x на угол xrf
  glRotatef(400, 0.0f, 1.0f, 0.0f); // вращение вокруг оси y на угол yrf
  glRotatef(400, 0.0f, 0.0f, 1.0f); // вращение вокруг оси z на угол zrf


//Отрисовка шара

for (alpha = 0.0; alpha < PI; alpha += PI/gradation)
{
    glBegin(GL_TRIANGLE_STRIP);
    for (beta = 0.0; beta < 2.01*PI; beta += PI/gradation)
    {
        x = radius*cos(beta)*sin(alpha);
        y = radius*sin(beta)*sin(alpha);
        z = radius*cos(alpha);
        glColor3f(x, y, z);
        glVertex3f(x, y, z);
        x = radius*cos(beta)*sin(alpha + PI/gradation);
        y = radius*sin(beta)*sin(alpha + PI/gradation);
        z = radius*cos(alpha + PI/gradation);
        glColor3f(x, y, z);
        glVertex3f(x, y, z);
    }
    glEnd();
}


//Отрисовка цилиндра

    glBegin(GL_QUAD_STRIP);
    alpha = 0.0f;
        while(alpha < 2*PI ) {
            x = r * cos(alpha);
            y = r * sin(alpha);
            glColor3f(x, y, l);
            glVertex3f(x, y , l);
            glVertex3f(x, y , -l);
            alpha = alpha + PI/gradation;
        }
        glColor3f(r, 0.0f, l);
        glVertex3f(r, 0.0f, l);
        glVertex3f(r, 0.0f, -l);
    glEnd();

//Отрисовка крыла 1

    glBegin(GL_POLYGON);
    glColor3f(0.0f,0.5f,1.0f);

    for (alpha = 0.0; alpha < 2.01*PI; alpha += PI/3)
    {
    glVertex3f(2*radius*cos(alpha),2*radius*sin(alpha),l);
    }

    glEnd();

//Отрисовка крыла 2

    glBegin(GL_POLYGON);
    glColor3f(0.0f,0.5f,1.0f);

    for (alpha = 0.0; alpha < 2.01*PI; alpha += PI/3)
    {
    glVertex3f(2*radius*cos(alpha),2*radius*sin(alpha),-l);
    }

    glEnd();
}