float f(float x, float y, float z) {
float a = x * x + 9.0f / 4.0f * y * y + z * z - 1;
return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z;
}
float h(float x, float z) {
for (float y = 1.0f; y >= 0.0f; y -= 0.001f)
if (f(x, y, z) <= 0.0f)
return y;
return 0.0f;
}
int main() {
HANDLE o = GetStdHandle(STD_OUTPUT_HANDLE);
_TCHAR buffer[25][80] = { _T(' ') };
_TCHAR ramp[] = _T(".:-=+*#%@");
for (float t = 0.0f;; t += 0.1f) {
int sy = 0;
float s = sinf(t);
float a = s * s * s * s * 0.2f;
for (float z = 1.3f; z > -1.2f; z -= 0.1f) {
_TCHAR* p = &buffer[sy++][0];
float tz = z * (1.2f - a);
for (float x = -1.5f; x < 1.5f; x += 0.05f) {
float tx = x * (1.2f + a);
float v = f(tx, 0.0f, tz);
if (v <= 0.0f) {
float y0 = h(tx, tz);
float ny = 0.01f;
float nx = h(tx + ny, tz) - y0;
float nz = h(tx, tz + ny) - y0;
float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz);
float d = (nx + ny - nz) * nd * 0.5f + 0.5f;
*p++ = ramp[(int)(d * 5.0f)];
}
else
*p++ = ' ';
}
}
for (sy = 0; sy < 25; sy++) {
COORD coord = { 0, sy };
SetConsoleCursorPosition(o, coord);
WriteConsole(o, buffer[sy], 79, NULL, 0);
}
Sleep(33);
}
}
float f(float x, float y, float z) {
float a = x * x + 9.0f / 4.0f * y * y + z * z - 1;
return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z;
}
float h(float x, float z) {
for (float y = 1.0f; y >= 0.0f; y -= 0.001f)
if (f(x, y, z) <= 0.0f)
return y;
return 0.0f;
}
int main() {
HANDLE o = GetStdHandle(STD_OUTPUT_HANDLE);
_TCHAR buffer[25][80] = { _T(' ') };
_TCHAR ramp[] = _T(".:-=+*#%@");
for (float t = 0.0f;; t += 0.1f) {
int sy = 0;
float s = sinf(t);
float a = s * s * s * s * 0.2f;
for (float z = 1.3f; z > -1.2f; z -= 0.1f) {
_TCHAR* p = &buffer[sy++][0];
float tz = z * (1.2f - a);
for (float x = -1.5f; x < 1.5f; x += 0.05f) {
float tx = x * (1.2f + a);
float v = f(tx, 0.0f, tz);
if (v <= 0.0f) {
float y0 = h(tx, tz);
float ny = 0.01f;
float nx = h(tx + ny, tz) - y0;
float nz = h(tx, tz + ny) - y0;
float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz);
float d = (nx + ny - nz) * nd * 0.5f + 0.5f;
*p++ = ramp[(int)(d * 5.0f)];
}
else
*p++ = ' ';
}
}
for (sy = 0; sy < 25; sy++) {
COORD coord = { 0, sy };
SetConsoleCursorPosition(o, coord);
WriteConsole(o, buffer[sy], 79, NULL, 0);
}
Sleep(33);
}
}
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { for (float z = 1.5f; z > -1.5f; z -= 0.05f) { for (float x = -1.5f; x < 1.5f; x += 0.025f) { float v = f(x, 0.0f, z); if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.01f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) * nd * 0.5f + 0.5f; putchar(".:-=+*#%@"[(int)(d * 5.0f)]); } else putchar(' '); } putchar('\n'); } }
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { FILE* fp = fopen("heart.ppm", "w"); int sw = 512, sh = 512; fprintf(fp, "P3\n%d %d\n255\n", sw, sh); for (int sy = 0; sy < sh; sy++) { float z = 1.5f - sy * 3.0f / sh; for (int sx = 0; sx < sw; sx++) { float x = sx * 3.0f / sw - 1.5f; float v = f(x, 0.0f, z); int r = 0; if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.001f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) / sqrtf(3) * nd * 0.5f + 0.5f; r = (int)(d * 255.0f); } fprintf(fp, "%d 0 0 ", r); } fputc('\n', fp); } fclose(fp); }
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { for (float z = 1.5f; z > -1.5f; z -= 0.05f) { for (float x = -1.5f; x < 1.5f; x += 0.025f) { float v = f(x, 0.0f, z); if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.01f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) * nd * 0.5f + 0.5f; putchar(".:-=+*#%@"[(int)(d * 5.0f)]); } else putchar(' '); } putchar('\n'); } }
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { FILE* fp = fopen("heart.ppm", "w"); int sw = 512, sh = 512; fprintf(fp, "P3\n%d %d\n255\n", sw, sh); for (int sy = 0; sy < sh; sy++) { float z = 1.5f - sy * 3.0f / sh; for (int sx = 0; sx < sw; sx++) { float x = sx * 3.0f / sw - 1.5f; float v = f(x, 0.0f, z); int r = 0; if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.001f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) / sqrtf(3) * nd * 0.5f + 0.5f; r = (int)(d * 255.0f); } fprintf(fp, "%d 0 0 ", r); } fputc('\n', fp); } fclose(fp); }
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { for (float z = 1.5f; z > -1.5f; z -= 0.05f) { for (float x = -1.5f; x < 1.5f; x += 0.025f) { float v = f(x, 0.0f, z); if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.01f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) * nd * 0.5f + 0.5f; putchar(".:-=+*#%@"[(int)(d * 5.0f)]); } else putchar(' '); } putchar('\n'); } }
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { FILE* fp = fopen("heart.ppm", "w"); int sw = 512, sh = 512; fprintf(fp, "P3\n%d %d\n255\n", sw, sh); for (int sy = 0; sy < sh; sy++) { float z = 1.5f - sy * 3.0f / sh; for (int sx = 0; sx < sw; sx++) { float x = sx * 3.0f / sw - 1.5f; float v = f(x, 0.0f, z); int r = 0; if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.001f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) / sqrtf(3) * nd * 0.5f + 0.5f; r = (int)(d * 255.0f); } fprintf(fp, "%d 0 0 ", r); } fputc('\n', fp); } fclose(fp); }
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { for (float z = 1.5f; z > -1.5f; z -= 0.05f) { for (float x = -1.5f; x < 1.5f; x += 0.025f) { float v = f(x, 0.0f, z); if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.01f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) * nd * 0.5f + 0.5f; putchar(".:-=+*#%@"[(int)(d * 5.0f)]); } else putchar(' '); } putchar('\n'); } }
float f(float x, float y, float z) { float a = x * x + 9.0f / 4.0f * y * y + z * z - 1; return a * a * a - x * x * z * z * z - 9.0f / 80.0f * y * y * z * z * z; }
float h(float x, float z) { for (float y = 1.0f; y >= 0.0f; y -= 0.001f) if (f(x, y, z) <= 0.0f) return y; return 0.0f; }
int main() { FILE* fp = fopen("heart.ppm", "w"); int sw = 512, sh = 512; fprintf(fp, "P3\n%d %d\n255\n", sw, sh); for (int sy = 0; sy < sh; sy++) { float z = 1.5f - sy * 3.0f / sh; for (int sx = 0; sx < sw; sx++) { float x = sx * 3.0f / sw - 1.5f; float v = f(x, 0.0f, z); int r = 0; if (v <= 0.0f) { float y0 = h(x, z); float ny = 0.001f; float nx = h(x + ny, z) - y0; float nz = h(x, z + ny) - y0; float nd = 1.0f / sqrtf(nx * nx + ny * ny + nz * nz); float d = (nx + ny - nz) / sqrtf(3) * nd * 0.5f + 0.5f; r = (int)(d * 255.0f); } fprintf(fp, "%d 0 0 ", r); } fputc('\n', fp); } fclose(fp); }