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-rw-r--r--bin/brot.c151
1 files changed, 0 insertions, 151 deletions
diff --git a/bin/brot.c b/bin/brot.c
deleted file mode 100644
index 69f11e59..00000000
--- a/bin/brot.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/* Copyright (C) 2018  June McEnroe <june@causal.agency>
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include <complex.h>
-#include <err.h>
-#include <math.h>
-#include <stdbool.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <sysexits.h>
-#include <time.h>
-#include <unistd.h>
-
-#include "gfx.h"
-
-static uint32_t rgb(uint8_t r, uint8_t g, uint8_t b) {
-	return (uint32_t)r << 16 | (uint32_t)g << 8 | (uint32_t)b;
-}
-static uint32_t gray(uint8_t n) {
-	return rgb(n, n, n);
-}
-
-static double absSq(double complex z) {
-	return creal(z) * creal(z) + cimag(z) * cimag(z);
-}
-
-static uint32_t depth = 50;
-
-static uint32_t mandelbrot(double complex c) {
-	double complex z = 0;
-	for (uint32_t i = 0; i < depth; ++i) {
-		if (absSq(z) > 4.0) return i;
-		z = z * z + c;
-	}
-	return 0;
-}
-
-static double complex translate = -0.75;
-static double complex transform = 2.5;
-
-static uint32_t samples = 1;
-
-static void sample(uint32_t *buf, size_t width, size_t height) {
-	double yRatio = (height > width) ? (double)height / (double)width : 1.0;
-	double xRatio = (width > height) ? (double)width / (double)height : 1.0;
-
-	memset(buf, 0, 4 * width * height);
-	size_t superWidth = width * samples;
-	size_t superHeight = height * samples;
-	for (size_t y = 0; y < superHeight; ++y) {
-		for (size_t x = 0; x < superWidth; ++x) {
-			double zx = (((double)x + 0.5) / (double)superWidth - 0.5) * xRatio;
-			double zy = (((double)y + 0.5) / (double)superHeight - 0.5) * yRatio;
-			uint32_t n = mandelbrot((zx + zy * I) * transform + translate);
-			buf[(y / samples) * width + (x / samples)] += n;
-		}
-	}
-}
-
-static void color(uint32_t *buf, size_t width, size_t height) {
-	for (size_t i = 0; i < width * height; ++i) {
-		buf[i] = gray(255 * buf[i] / samples / samples / depth);
-	}
-}
-
-static double frameTime;
-void draw(uint32_t *buf, size_t width, size_t height) {
-	clock_t t0 = clock();
-	sample(buf, width, height);
-	color(buf, width, height);
-	frameTime = (double)(clock() - t0) / (double)CLOCKS_PER_SEC;
-}
-
-static double translateStep = 1.0 / 128.0;
-static double rotateStep = 1.0 / 128.0;
-static double scaleStep = 1.0 / 32.0;
-
-bool input(char in) {
-	const double PI = acos(-1.0);
-	switch (in) {
-		break; case 'q': return false;
-		break; case '.': depth++;
-		break; case ',': if (depth > 1) depth--;
-		break; case 'l': translate += translateStep * transform;
-		break; case 'h': translate -= translateStep * transform;
-		break; case 'j': translate += translateStep * I * transform;
-		break; case 'k': translate -= translateStep * I * transform;
-		break; case 'u': transform *= cexp(rotateStep * PI * I);
-		break; case 'i': transform /= cexp(rotateStep * PI * I);
-		break; case '+': transform *= 1.0 - scaleStep;
-		break; case '-': transform /= 1.0 - scaleStep;
-		break; case '0': translate = -0.75; transform = 2.5;
-		break; case ']': samples++;
-		break; case '[': if (samples > 1) samples--;
-	}
-	return true;
-}
-
-const char *status(void) {
-	static char buf[256];
-	snprintf(
-		buf, sizeof(buf),
-		"brot -s %u -i %u -t %g%+gi -f %g%+gi # %.6f",
-		samples, depth,
-		creal(translate), cimag(translate),
-		creal(transform), cimag(transform),
-		frameTime
-	);
-	return buf;
-}
-
-static double complex parseComplex(const char *str) {
-	double real = 0.0, imag = 0.0;
-	real = strtod(str, (char **)&str);
-	if (str[0] == 'i') {
-		imag = real;
-		real = 0.0;
-	} else if (str[0]) {
-		imag = strtod(str, NULL);
-	}
-	return real + imag * I;
-}
-
-int init(int argc, char *argv[]) {
-	int opt;
-	while (0 < (opt = getopt(argc, argv, "f:i:s:t:"))) {
-		switch (opt) {
-			break; case 'f': transform = parseComplex(optarg);
-			break; case 'i': depth = strtoul(optarg, NULL, 0);
-			break; case 's': samples = strtoul(optarg, NULL, 0);
-			break; case 't': translate = parseComplex(optarg);
-			break; default: return EX_USAGE;
-		}
-	}
-	return EX_OK;
-}