diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/chilbert_obj.cpp | 54 | ||||
| -rw-r--r-- | src/chilbert_svg.cpp | 63 |
2 files changed, 117 insertions, 0 deletions
diff --git a/src/chilbert_obj.cpp b/src/chilbert_obj.cpp new file mode 100644 index 0000000..0f31fbd --- /dev/null +++ b/src/chilbert_obj.cpp @@ -0,0 +1,54 @@ +/* + Copyright (C) 2018 David Robillard <d@drobilla.net> + + This program is free software: you can redistribute it and/or modify it under + the terms of the GNU General Public License as published by the Free Software + Foundation, either version 2 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 General Public License for more + details. + + You should have received a copy of the GNU General Public License along with + this program. If not, see <https://www.gnu.org/licenses/>. +*/ + +#include "chilbert/chilbert.hpp" + +#include <array> +#include <cstdint> +#include <cstdio> +#include <cstdlib> + +int +main(int argc, char** argv) +{ + if (argc != 2) { + fprintf(stderr, "Usage: %s NUM_POINTS\n", argv[0]); + return 1; + } + + const unsigned long num_points = std::strtoul(argv[1], nullptr, 10); + if (num_points == 0 || num_points == ULONG_MAX) { + fprintf(stderr, "Usage: %s NUM_POINTS\n", argv[0]); + return 1; + } + + // Vertices + for (uint64_t i = 0; i < num_points; ++i) { + std::array<uint32_t, 3> point; + chilbert::index_to_coords(point, 16, 3, i); + printf("v %u %u %u\n", point[0], point[1], point[2]); + } + + // One polyline through all vertices + printf("\nl"); + for (unsigned i = 0; i < num_points - 1; ++i) { + printf(" %u", i + 1); + } + printf("\n"); + + return 0; +} diff --git a/src/chilbert_svg.cpp b/src/chilbert_svg.cpp new file mode 100644 index 0000000..dd4a3d4 --- /dev/null +++ b/src/chilbert_svg.cpp @@ -0,0 +1,63 @@ +/* + Copyright (C) 2018 David Robillard <d@drobilla.net> + + This program is free software: you can redistribute it and/or modify it under + the terms of the GNU General Public License as published by the Free Software + Foundation, either version 2 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 General Public License for more + details. + + You should have received a copy of the GNU General Public License along with + this program. If not, see <https://www.gnu.org/licenses/>. +*/ + +#include "chilbert/chilbert.hpp" + +#include <array> +#include <cmath> +#include <cstdint> +#include <cstdio> +#include <cstdlib> + +int +main(int argc, char** argv) +{ + if (argc != 2) { + fprintf(stderr, "Usage: %s NUM_POINTS\n", argv[0]); + return 1; + } + + const unsigned long num_points = std::strtoul(argv[1], nullptr, 10); + if (num_points == 0 || num_points == ULONG_MAX) { + fprintf(stderr, "Usage: %s NUM_POINTS\n", argv[0]); + return 1; + } + + const uint32_t w = + uint32_t(sqrt(1 << uint32_t(ceil(log2(double(num_points)))))) - 1; + + // Header + printf("<svg xmlns='http://www.w3.org/2000/svg'" + " version='1.2' baseProfile='tiny' viewBox='0 0 %u %u'>\n", + w, + w); + printf("<desc>Hilbert Curve</desc>\n"); + printf("<polyline vector-effect='non-scaling-stroke' fill='none' " + "stroke='black' stroke-width='1' points='"); + + // One polyline through all vertices + for (uint64_t i = 0; i <= num_points; ++i) { + std::array<uint32_t, 2> point; + chilbert::index_to_coords(point, 32, 2, i); + printf("%u,%u ", point[0], point[1]); + } + + // Close off document + printf("' />\n</svg>\n"); + + return 0; +} |