diff options
| -rw-r--r-- | bin/brot.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/bin/brot.c b/bin/brot.c index cd2f44c3..3402955c 100644 --- a/bin/brot.c +++ b/bin/brot.c @@ -49,7 +49,7 @@ void draw(uint32_t *buf, size_t width, size_t height) { double complex zy = ((double)y / (double)height - 0.5) * cimag(scale) * I; for (size_t x = 0; x < width; ++x) { double complex zx = ((double)x / (double)width - 0.5) * creal(scale); - uint64_t n = mandelbrot((origin + zx + zy) * rotate); + uint64_t n = mandelbrot(origin + (zx + zy) * rotate); uint32_t g = (double)n / (double)depth * 255.0; buf[y * width + x] = g << 16 | g << 8 | g; } @@ -57,16 +57,22 @@ void draw(uint32_t *buf, size_t width, size_t height) { } bool input(char in) { + const double PI = acos(-1.0); + double complex realTrans = 0.01 * creal(scale) * rotate; + double complex imagTrans = 0.01 * cimag(scale) * I * rotate; + double complex rotation = cexp(0.01 * PI * I); switch (in) { case 'q': return false; case '.': depth++; break; case ',': if (depth) depth--; break; case '+': scale *= 0.9; break; case '-': scale *= 1.1; break; - case 'l': origin += creal(scale) * 0.01; break; - case 'h': origin -= creal(scale) * 0.01; break; - case 'j': origin += cimag(scale) * 0.01 * I; break; - case 'k': origin -= cimag(scale) * 0.01 * I; break; + case 'l': origin += realTrans; break; + case 'h': origin -= realTrans; break; + case 'j': origin += imagTrans; break; + case 'k': origin -= imagTrans; break; + case 'u': rotate *= rotation; break; + case 'i': rotate /= rotation; break; } return true; } @@ -75,10 +81,11 @@ const char *status(void) { static char buf[256]; snprintf( buf, sizeof(buf), - "(%u) (%g + %gi) (%g + %gi)", + "%u %g+%gi %g+%gi %g+%gi", depth, creal(origin), cimag(origin), - creal(scale), cimag(scale) + creal(scale), cimag(scale), + creal(rotate), cimag(rotate) ); return buf; } |