60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
#include <cruft/util/tap.hpp>
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#include <cruft/util/geom/sphere.hpp>
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using cruft::geom::ray2f;
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using cruft::geom::ray3f;
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///////////////////////////////////////////////////////////////////////////////
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void
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test_intersect (cruft::TAP::logger &tap)
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{
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using cruft::geom::sphere3f;
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static const struct {
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float d;
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sphere3f s;
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ray3f r;
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const char *message;
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} TESTS[] = {
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{
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1.f,
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{ cruft::point3f {0.f}, 1.f },
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{ cruft::point3f {0, 2, 0}, cruft::vector3f {0,-1,0} },
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"straight towards unit-origin sphere"
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},
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{
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0.f,
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{ cruft::point3f {0}, 1.f },
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{ cruft::point3f {0,1,0}, cruft::vector3f {0,1,0} },
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"ray origin coincides with unit-origin sphere",
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},
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{
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INFINITY,
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{ cruft::point3f {0}, 1 },
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{ cruft::point3f {0,2,0}, cruft::vector3f {0,1,0} },
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"offset ray never intersects unit-origin sphere"
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},
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{
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1.f,
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{ cruft::point3f {1,1,1}, 1 },
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{ cruft::point3f {2,2,1}, cruft::vector3f{-1,0,0} },
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"glancing ray at unit distance"
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}
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};
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for (const auto &[d,s,r,msg]: TESTS) {
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tap.expect_eq (d, distance (r, s), "{}", msg);
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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_intersect (tap);
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return tap.status ();
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} |