Aufgabe 2

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <complex.h>
#include <time.h>

void MVisualisierung (float x_min, float x_max, float y_min, float y_max, int w, int h, int n_max){


    int i, j, k_x, k_y, temp;
    int n = 0;
    float delta_x = (x_max - x_min)/w;
    float delta_y = (y_max - x_min)/h;
    float x;
    float y;
    float complex c, z;
    FILE* visu;
    int** array = (int**) calloc(w, sizeof(int*));
    for (i = 0; i < w; i++){
        array[i] = (int*) calloc(h, sizeof(int));
    }

    for (k_x = 0; k_x < w; k_x++){

        for (k_y = 0; k_y < h; k_y++){

            x = x_min + (k_x - 0.5) * delta_x;
            y = y_min + (k_y - 0.5) * delta_y;
            c = x + I*y;
            z = 0;
            n = 0;

            while (cabsf(z) < 2 && n <= n_max){
                z = z*z + c;
                n++;
            }

            array[k_x][k_y] = pow((float)n/n_max, 0.2) * 255;
        }
    }

    visu = fopen("visualized.pgm", "wb");
    fprintf(visu, "P2\n");
    fprintf(visu, "%d %d\n", h, w);
    fprintf(visu, "255\n");

    for(i = 0; i < h; i++){

        for(j = 0; j < w; j++){

            temp =  array[i][j];
            fprintf(visu, "%d ", temp);

            //printf("%d ", (int)arr[i][j]);

        }

        fprintf(visu, "\n");
        //printf("\n");

    }

    fclose(visu);
    free(array);

}

int main (){

    clock_t start;
    clock_t ende;

    start = clock();
    MVisualisierung (-1.9, 0.6, -1.1, 1.1, 2500, 2200, 1024);
    ende = clock();

    printf("Dauer: %.10f sekunden\n", (double)(ende - start) / CLOCKS_PER_SEC);

}