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Adding more bounds overlap tests.

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Бранимир Караџић 2019-02-11 15:59:24 -08:00
parent 8ea854a4e7
commit 4d6da5473a
1 changed files with 39 additions and 4 deletions
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43
examples/common/bounds.cpp
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@ -1762,8 +1762,7 @@ bool overlap(const Obb& _obbA, const Obb& _obbB)
bool overlap(const Plane& _plane, const Vec3& _pos)
{
BX_UNUSED(_plane, _pos);
return false;
return isNearZero(distance(_plane, _pos) );
}
bool overlap(const Plane& _plane, const Sphere& _sphere)
@ -1935,8 +1934,44 @@ bool overlap(const Triangle& _triangle, const Plane& _plane)
bool overlap(const Triangle& _triangleA, const Triangle& _triangleB)
{
BX_UNUSED(_triangleA, _triangleB);
return false;
const Vec3 baA = sub(_triangleA.v1, _triangleA.v0);
const Vec3 cbA = sub(_triangleA.v2, _triangleA.v1);
const Vec3 acA = sub(_triangleA.v0, _triangleA.v2);
const Vec3 baB = sub(_triangleB.v1, _triangleB.v0);
const Vec3 cbB = sub(_triangleB.v2, _triangleB.v1);
const Vec3 acB = sub(_triangleB.v0, _triangleB.v2);
const Vec3 axes[] =
{
cross(baA, cbA),
cross(baB, cbB),
cross(baB, baA),
cross(baB, cbA),
cross(baB, acA),
cross(cbB, baA),
cross(cbB, cbA),
cross(cbB, acA),
cross(acB, baA),
cross(acB, cbA),
cross(acB, acA),
};
for (uint32_t ii = 0; ii < BX_COUNTOF(axes); ++ii)
{
const Interval ia = projectToAxis(axes[ii], _triangleA);
const Interval ib = projectToAxis(axes[ii], _triangleB);
if (!overlap(ia, ib) )
{
return false;
}
}
return true;
}
bool overlap(const Triangle& _triangle, const Cylinder& _cylinder)