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#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
float x, y, z;
float step = 0.05;
float zbuffer[24][80];
float A = 0.0;
float B = 0.0;
char market[24][80];
int main()
{
system("clear");
while (1) {
memset(market, ' ', sizeof(market));
memset(zbuffer, 0, sizeof(zbuffer));
for (float u = -1.0; u <= 1.0; u += step) {
for (float v = -1.0; v <= 1.0; v += step) {
float faces[6][3] = {
{ u, v, 1.0 }, // z = 1
{ u, v, -1.0 }, // z = -1
{ u, 1.0, v }, // y = 1
{ u, -1.0, v }, // y = -1
{ 1.0, u, v }, // x = 1
{ -1.0, u, v } //x = -1
};
for (int f = 0; f < 6; f++) {
float x = faces[f][0];
float y = faces[f][1];
float z = faces[f][2];
float y1 = y * cos(A) - z * sin(A);
float z1 = y * sin(A) + z * cos(A);
float x_rot = x * cos(B) - z1 * sin(B);
float z_rot = x * sin(B) + z1 * cos(B);
float dis = 3.5;
float ooZ = 1.0 / (z_rot + dis);
int xp = (int)(40 + 40 * x_rot * ooZ);
int yp = (int)(12 + 20 * y1 * ooZ);
if (yp >= 0 && xp <= 80 && yp >= 0 && yp < 24 && xp >= 0) {
if (ooZ > zbuffer[yp][xp]) {
zbuffer[yp][xp] = ooZ;
market[yp][xp] = '*';
}
}
}
}
}
printf("\x1b[H");
for (int y = 0; y < 24; y++) {
for (int x = 0; x < 80; x++) {
putchar(market[y][x]);
}
putchar('\n');
}
A += 0.02;
B += 0.02;
usleep(11000);
}
}
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