125 lines
3.1 KiB
C++
125 lines
3.1 KiB
C++
#include <cruft/util/tap.hpp>
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#include <cruft/util/geom/ellipse.hpp>
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#include <cruft/util/geom/ray.hpp>
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#include <cruft/util/point.hpp>
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#include <cruft/util/vector.hpp>
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///////////////////////////////////////////////////////////////////////////////
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void
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test_intersection (cruft::TAP::logger &tap)
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{
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static struct {
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cruft::geom::ellipse3f shape;
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cruft::geom::ray3f caster;
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float distance;
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const char *message;
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} const TESTS[] = {
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{
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.shape = { .origin = {0}, .radius = {1}, .up = {0,1,0} },
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.caster = { .origin = { 0, 0, -2 }, .direction = cruft::vector3f{ 0, 0, 1 } },
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.distance = 1,
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.message = "sphere on origin, ray mostly on origin"
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},
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{
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.shape = { .origin = {0}, .radius = {1,1,1.5}, .up = {0,1,0} },
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.caster = { .origin = {0,0,-2}, .direction = cruft::vector3f{0,0,1} },
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.distance = .5f,
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.message = "ellipse on origin, extended on z, ray along z",
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},
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{
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.shape = { .origin = 1, .radius = 1, .up = { 0, 1, 0 } },
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.caster = { .origin = {1,1,3}, .direction = {0,0,-1} },
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.distance = 1.f,
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.message = "ellipse at 1,1,1, ray along -z",
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}
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};
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for (auto const& t: TESTS) {
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tap.expect_eq (t.distance, distance (t.caster, t.shape), "{:s}", t.message);
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}
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}
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void
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test_area (cruft::TAP::logger &tap)
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{
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static struct {
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cruft::geom::ellipse3f shape;
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float value;
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const char *message;
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} const TESTS[] = {
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{ .shape = { .origin = {0}, .radius = {1}, .up = {0} }, .value = 12.57f, .message = "unit radius" },
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};
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for (auto const& t: TESTS) {
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auto found = area (t.shape);
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tap.expect (cruft::relatively_equal (found, t.value, 1.08e-2f), "{}", t.message);
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}
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}
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void
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test_cover (cruft::TAP::logger &tap)
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{
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static struct {
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std::vector<cruft::point3f> cloud;
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const char *message;
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} const TESTS[] = {
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{ {
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{-1, 0, 0},
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{ 0, 0, 0},
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{ 1, 0, 0},
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}, "three spaced across x"
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},
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{ {
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{-1, 0, 0},
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{ 0, 0, 0},
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{ 1, 0, 0},
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{ 0,-1, 0},
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{ 0, 1, 0},
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}, "planar circle about origin"
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},
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{ {
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{-1, 0, 0},
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{ 0, 0, 0},
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{ 1, 0, 0},
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{ 0,-1, 0},
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{ 0, 1, 0},
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{ 0, 0,-1},
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{ 0, 0, 1},
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}, "sphere about origin"
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},
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};
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for (auto const &t: TESTS) {
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auto const shape = cruft::geom::cover (cruft::view<const cruft::point3f*> {t.cloud});
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auto const success = std::all_of (
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t.cloud.begin (),
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t.cloud.end (),
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[shape] (auto p) {
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return intersects (shape, p);
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});
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tap.expect (success, "{}", t.message);
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}
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}
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///////////////////////////////////////////////////////////////////////////////
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int
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main ()
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{
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cruft::TAP::logger tap;
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test_intersection (tap);
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test_area (tap);
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test_cover (tap);
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return tap.status ();
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}
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