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November 7, 2025 15:08
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| #include <stdio.h> | |
| #include <math.h> | |
| #define PI 3.14159265358979323846 | |
| #define RADIUS 10 | |
| int main() | |
| { | |
| char grid[RADIUS * 2][RADIUS * 4]; | |
| for (int i = 0; i < RADIUS * 2; i++) | |
| { | |
| for (int j = 0; j < RADIUS * 4; j++) | |
| { | |
| grid[i][j] = ' '; | |
| } | |
| } | |
| char shade_chars[] = ".:-=+*#%@"; | |
| int num_shades = sizeof(shade_chars) - 1; | |
| double angle = 0.0; | |
| while (1) | |
| { | |
| double Lx = cos(angle); | |
| double Ly = sin(angle) * 0.5; | |
| double Lz = -0.7; | |
| double l_norm_constant = sqrt(Lx * Lx + Ly * Ly + Lz * Lz); | |
| if (l_norm_constant != 0.0) | |
| { | |
| Lx /= l_norm_constant; | |
| Ly /= l_norm_constant; | |
| Lz /= l_norm_constant; | |
| } | |
| for (int i = 0; i < RADIUS * 2; i++) | |
| { | |
| for (int j = 0; j < RADIUS * 4; j++) | |
| { | |
| grid[i][j] = ' '; | |
| } | |
| } | |
| for (double phi = 0.0; phi <= PI; phi += 0.01) | |
| { | |
| for (double theta = 0.0; theta < 2.0 * PI; theta += 0.01) | |
| { | |
| double x_norm = sin(phi) * cos(theta); | |
| double y_norm = sin(phi) * sin(theta); | |
| double z_norm = cos(phi); | |
| int sx = (int)(RADIUS * (x_norm + 1.0) * 2); | |
| int sy = (int)(RADIUS * (y_norm + 1.0)); | |
| if (sx >= 0 && sx < RADIUS * 4 && sy >= 0 && sy < RADIUS * 2) | |
| { | |
| double dot = x_norm * Lx + y_norm * Ly + z_norm * Lz; | |
| if (dot < 0.0) | |
| dot = 0.0; | |
| int shade_index = (int)(dot * num_shades); | |
| grid[sy][sx] = shade_chars[shade_index]; | |
| } | |
| } | |
| } | |
| printf("\e[1;1H\e[2J"); | |
| for (int i = 0; i < RADIUS * 2; i++) | |
| { | |
| printf("%.*s\n", RADIUS * 4, grid[i]); | |
| } | |
| angle += 0.1; | |
| Sleep(50); | |
| } | |
| return 0; | |
| } |
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