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Consolidate VR UI with Inconsolata neon styling and mount settings
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#include "mount.hpp"
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#include <array>
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#include <cmath>
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#include <cstdlib>
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#include <filesystem>
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#include <fstream>
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#include <iostream>
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#include <iterator>
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#include <limits>
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#include <string>
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#include <string_view>
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#include <unistd.h>
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using namespace frameyap;
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namespace fs = std::filesystem;
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#define CHECK(x) do { if (!(x)) { std::cerr << "line " << __LINE__ << ": " #x "\n"; std::exit(1); } } while (0)
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namespace {
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constexpr Matrix34 identity{{{{1.f, 0.f, 0.f, 0.f}},
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{{0.f, 1.f, 0.f, 0.f}},
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{{0.f, 0.f, 1.f, 0.f}}}};
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bool near(float a, float b) { return std::abs(a - b) < 1e-4f; }
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void check_basis(const Matrix34& pose, float right_x, float right_z, float back_x, float back_z) {
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CHECK(near(pose[0][0], right_x)); CHECK(near(pose[1][0], 0)); CHECK(near(pose[2][0], right_z));
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CHECK(near(pose[0][1], 0)); CHECK(near(pose[1][1], 1)); CHECK(near(pose[2][1], 0));
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CHECK(near(pose[0][2], back_x)); CHECK(near(pose[1][2], 0)); CHECK(near(pose[2][2], back_z));
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}
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struct TempDir {
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fs::path path;
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TempDir() {
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std::string pattern = (fs::temp_directory_path() / "frameyap-mount-test-XXXXXX").string();
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auto* dir = ::mkdtemp(pattern.data());
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CHECK(dir != nullptr);
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path = dir;
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}
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~TempDir() { std::error_code ec; fs::remove_all(path, ec); }
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};
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void put(const fs::path& path, const std::string& content) {
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std::ofstream out(path, std::ios::binary | std::ios::trunc);
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CHECK(bool(out)); out << content; CHECK(bool(out));
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}
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struct EnvRestore {
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std::string key;
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bool had;
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std::string original;
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explicit EnvRestore(const char* k) : key(k), had(std::getenv(k) != nullptr), original(had ? std::getenv(k) : "") {}
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~EnvRestore() { if (had) ::setenv(key.c_str(), original.c_str(), 1); else ::unsetenv(key.c_str()); }
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};
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} // namespace
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int main() {
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const std::array<Mount, 4> mounts{Mount::World, Mount::LeftWrist, Mount::RightWrist, Mount::Head};
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const std::array<std::string_view, 4> names{"world", "left-wrist", "right-wrist", "head"};
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for (std::size_t i = 0; i < mounts.size(); ++i) {
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CHECK(mount_name(mounts[i]) == names[i]);
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CHECK(parse_mount(names[i]) == mounts[i]);
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}
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CHECK(!parse_mount("World")); CHECK(!parse_mount("head\n")); CHECK(!parse_mount("left_wrist"));
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CHECK(!parse_mount("")); CHECK(!parse_mount("world extra"));
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CHECK(near(mount_width(Mount::World), .85f)); CHECK(near(mount_width(Mount::Head), .85f));
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CHECK(near(mount_width(Mount::LeftWrist), .42f)); CHECK(near(mount_width(Mount::RightWrist), .42f));
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CHECK(relative_mount_pose(Mount::World) == identity);
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const auto head = relative_mount_pose(Mount::Head);
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check_basis(head, 1, 0, 0, 1);
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CHECK(near(head[0][3], 0)); CHECK(near(head[1][3], -.16f)); CHECK(near(head[2][3], -1.05f));
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const auto left = relative_mount_pose(Mount::LeftWrist), right = relative_mount_pose(Mount::RightWrist);
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check_basis(left, 1, 0, 0, 1); check_basis(right, 1, 0, 0, 1);
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CHECK(near(left[0][3], .13f)); CHECK(near(right[0][3], -.13f));
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CHECK(near(left[1][3], .12f)); CHECK(near(right[1][3], .12f));
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CHECK(near(left[2][3], -.18f)); CHECK(near(right[2][3], -.18f));
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auto hmd = identity;
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hmd[0][3] = 2; hmd[1][3] = 1.7f; hmd[2][3] = 3;
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auto pose = world_mount_pose(hmd);
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CHECK(pose); check_basis(*pose, 1, 0, 0, 1);
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CHECK(near((*pose)[0][3], 2)); CHECK(near((*pose)[1][3], 1.54f)); CHECK(near((*pose)[2][3], 1.95f));
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// 90 degree yaw: HMD looks +X. The panel's +Z points back toward -X.
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hmd[0][0] = 0; hmd[0][2] = -1; hmd[2][0] = 1; hmd[2][2] = 0;
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pose = world_mount_pose(hmd);
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CHECK(pose); check_basis(*pose, 0, 1, -1, 0);
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CHECK(near((*pose)[0][3], 3.05f)); CHECK(near((*pose)[2][3], 3));
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// Pitch must not tilt the panel or change its upright orientation.
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hmd = identity;
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hmd[1][1] = .8f; hmd[1][2] = -.6f;
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hmd[2][1] = .6f; hmd[2][2] = .8f;
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pose = world_mount_pose(hmd);
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CHECK(pose); check_basis(*pose, 1, 0, 0, 1);
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CHECK(near((*pose)[1][3], -.16f)); CHECK(near((*pose)[2][3], -1.05f));
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hmd[0][2] = 0; hmd[2][2] = 0; // forward is vertical, yaw undefined
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CHECK(!world_mount_pose(hmd));
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hmd[2][2] = 1e-6f; CHECK(!world_mount_pose(hmd));
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hmd = identity; hmd[0][3] = std::numeric_limits<float>::infinity(); CHECK(!world_mount_pose(hmd));
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hmd = identity; hmd[0][0] = std::numeric_limits<float>::quiet_NaN(); CHECK(!world_mount_pose(hmd));
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TempDir tmp;
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const auto file = tmp.path / "nested" / "mount";
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CHECK(load_mount(file) == Mount::World); CHECK(!save_mount({}, Mount::Head));
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for (auto mount : mounts) {
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CHECK(save_mount(file, mount));
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CHECK(load_mount(file) == mount);
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std::ifstream in(file, std::ios::binary);
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CHECK(bool(in));
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const std::string data{std::istreambuf_iterator<char>(in), std::istreambuf_iterator<char>()};
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CHECK(data == std::string(mount_name(mount)) + "\n");
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}
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put(file, "other\n"); CHECK(load_mount(file) == Mount::World);
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put(file, "head\nextra\n"); CHECK(load_mount(file) == Mount::World);
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put(file, std::string(128, 'a')); CHECK(load_mount(file) == Mount::World);
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put(file, std::string("head\0\n", 6)); CHECK(load_mount(file) == Mount::World);
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CHECK(!save_mount(tmp.path, Mount::Head)); // cannot rename over an existing directory
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CHECK(!save_mount(file, static_cast<Mount>(-1)));
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CHECK(load_mount(tmp.path) == Mount::World);
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EnvRestore restore_xdg("XDG_CONFIG_HOME"), restore_home("HOME");
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::setenv("XDG_CONFIG_HOME", tmp.path.c_str(), 1);
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::setenv("HOME", "/other-absolute-home", 1);
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CHECK(default_mount_settings_path() == tmp.path / "frameyap/mount");
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::setenv("XDG_CONFIG_HOME", "relative", 1);
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CHECK(default_mount_settings_path() == fs::path("/other-absolute-home/.config/frameyap/mount"));
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::setenv("HOME", "relative", 1);
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CHECK(default_mount_settings_path().empty());
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::unsetenv("HOME"); ::unsetenv("XDG_CONFIG_HOME");
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CHECK(default_mount_settings_path().empty());
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std::cout << "mount checks passed\n";
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}
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