SRS #2/20var (IV semester) CG

#include "stdafx.h"
#include "glut.h"
#include <cmath>
#include <iostream>
#include <string>
#include <ctime>
#define SIZE 6
#define LP 0.4
#define M 3.14
using namespace std;

# define M_PI           3.14159265358979323846  /* pi */
GLint Width = 800, Height = 800;


void DRAWING(double x, double y, double r, double a) {
    double m1[SIZE];
    double m2[SIZE];
    glBegin(GL_LINES);
    glLineWidth(2.0);
    for (int i = 0; i < SIZE; i++) {
        m1[i] = r * cos(a + i * M_PI*LP);
        m2[i] = r * sin(a + i * M_PI*LP);
    }
    for (int i = 0; i < SIZE - 1; i++) {
        glColor3d(0.0, 1.0, 0.0);
        glVertex2d(x + m1[i], y + m2[i]);
        glVertex2d(x + m1[i + 1], y + m2[i + 1]);
    }
    glEnd();
    glFinish();
}
void DARER(double x, double y, double r, double a, int d) {
    double v;

    v = 2 * r*cos(M_PI / 5);
    for (int i = 0; i < SIZE; i++) {
        DRAWING(x - v * cos(a + i * M_PI*LP), y - v * sin(a + i * M_PI*LP), r, a + M_PI + i * M_PI*LP);
        if (d > 0)
            DARER(x - v * cos(a + i * M_PI*LP), y -
                v * sin(a + i * M_PI*LP), r / (2 * cos(M_PI / 5) + 1), a + M_PI + (2 * i + 1)*M_PI * 2 / 10, d - 1);
    }
}

void Draw()
{
    DARER(100, 100, 95, M_PI / 10, 4);
}
void Reshape(GLint w, GLint h)
{
    glClearColor(0.3, 0.3, 0.3, 1.0);
    glClear(GL_COLOR_BUFFER_BIT);
    Width = w;
    Height = h;
    glViewport(0, 0, w, h);
}
void main(int argc, char ** argv)
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB);
    glutInitWindowPosition(200, 200);
    glutInitWindowSize(Width, Height);
    glutCreateWindow("Gosper's Curve");

    glClearColor(0.3, 0.3, 0.3, 1.0);
    glClear(GL_COLOR_BUFFER_BIT);

    glutDisplayFunc(Draw);
    glutReshapeFunc(Reshape);
    glMatrixMode(GL_PROJECTION);

    glScaled(0.001f, 0.001f, 0.001f);

    glutMainLoop();
}