From c653c8cda8f49d3bbe07190a6477367290ff7f04 Mon Sep 17 00:00:00 2001 From: Tavian Barnes Date: Sun, 19 Apr 2020 16:28:10 -0400 Subject: Begin re-writing in Rust --- generate.c | 82 -------------------------------------------------------------- 1 file changed, 82 deletions(-) delete mode 100644 generate.c (limited to 'generate.c') diff --git a/generate.c b/generate.c deleted file mode 100644 index 9a4eac8..0000000 --- a/generate.c +++ /dev/null @@ -1,82 +0,0 @@ -/********************************************************************* - * kd-forest * - * Copyright (C) 2015 Tavian Barnes * - * * - * This program is free software. It comes without any warranty, to * - * the extent permitted by applicable law. You can redistribute it * - * and/or modify it under the terms of the Do What The Fuck You Want * - * To Public License, Version 2, as published by Sam Hocevar. See * - * the COPYING file or http://www.wtfpl.net/ for more details. * - *********************************************************************/ - -#include "generate.h" -#include "color.h" -#include "hilbert.h" -#include "util.h" -#include - -uint32_t * -generate_colors(const options_t *options) -{ - const unsigned int bit_depth = options->bit_depth; - mode_t mode = options->mode; - - // Allocate bits from most to least perceptually important - unsigned int grb_bits[3]; - for (unsigned int i = 0; i < 3; ++i) { - grb_bits[i] = (bit_depth + 2 - i)/3; - } - - uint32_t *colors = xmalloc(options->ncolors*sizeof(uint32_t)); - for (uint32_t i = 0; i < (1 << bit_depth); ++i) { - uint32_t n = i; - uint32_t grb[3] = {0, 0, 0}; - - switch (mode) { - case MODE_MORTON: - for (unsigned int j = 0; j < bit_depth; ++j) { - grb[j%3] |= (i & (1 << j)) >> (j - j/3); - } - break; - - case MODE_HILBERT: - hilbert_point(3, grb_bits, n, grb); - break; - - default: - for (unsigned int j = 0; j < 3; ++j) { - grb[j] = n & ((1 << grb_bits[j]) - 1); - n >>= grb_bits[j]; - } - break; - } - - // Pad out colors, and put them in RGB order - grb[0] <<= 16U - grb_bits[0]; - grb[1] <<= 24U - grb_bits[1]; - grb[2] <<= 8U - grb_bits[2]; - - colors[i] = grb[1] | grb[0] | grb[2]; - } - - switch (mode) { - case MODE_HUE_SORT: - qsort(colors, options->ncolors, sizeof(uint32_t), color_comparator); - break; - - case MODE_RANDOM: - // Fisher-Yates shuffle - for (unsigned int i = options->ncolors; i-- > 0;) { - unsigned int j = xrand(i + 1); - uint32_t temp = colors[i]; - colors[i] = colors[j]; - colors[j] = temp; - } - break; - - default: - break; - } - - return colors; -} -- cgit v1.2.3