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Implement CAABox::getTri

This commit is contained in:
Jack Andersen 2019-04-02 18:30:18 -10:00
parent 2edc75f793
commit 617875531a
2 changed files with 63 additions and 1 deletions
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15
include/zeus/CAABox.hpp
View File

@ -18,7 +18,14 @@ class CAABox {
public:
enum class EBoxEdgeId { Z0, X0, Z1, X1, Z2, X2, Z3, X3, Y0, Y1, Y2, Y3 };
enum class EBoxFaceID {};
enum class EBoxFaceId {
YMin,
YMax,
XMin,
XMax,
ZMax,
ZMin
};
CVector3f min;
CVector3f max;
@ -128,6 +135,12 @@ public:
}
}
struct Tri {
zeus::CPlane x0_plane;
zeus::CVector3f x10_[3];
};
Tri getTri(EBoxFaceId face, int windOffset) const;
CAABox getTransformedAABox(const CTransform& xfrm) const {
CAABox box;
CVector3f point = xfrm * getPoint(0);

49
src/CAABox.cpp
View File

@ -110,4 +110,53 @@ CAABox CAABox::booleanIntersection(const CAABox& other) const {
return {minVec, maxVec};
}
CAABox::Tri CAABox::getTri(EBoxFaceId face, int windOffset) const {
zeus::CVector3f verts[] = {
{min.x(), min.y(), max.z()},
min,
{max.x(), min.y(), min.z()},
{max.x(), min.y(), max.z()}};
switch (face) {
case EBoxFaceId::YMin:
default:
verts[0].assign(min.x(), min.y(), max.z());
verts[1].assign(max.x(), min.y(), max.z());
verts[2].assign(max.x(), min.y(), min.z());
verts[3] = min;
break;
case EBoxFaceId::YMax:
verts[0] = max;
verts[1].assign(min.x(), max.y(), max.z());
verts[2].assign(min.x(), max.y(), min.z());
verts[3].assign(max.x(), max.y(), min.z());
break;
case EBoxFaceId::XMin:
verts[0].assign(min.x(), max.y(), max.z());
verts[1].assign(min.x(), min.y(), max.z());
verts[2] = min;
verts[3].assign(min.x(), max.y(), min.z());
break;
case EBoxFaceId::XMax:
verts[0].assign(max.x(), min.y(), max.z());
verts[1] = max;
verts[2].assign(max.x(), max.y(), min.z());
verts[3].assign(max.x(), min.y(), min.z());
break;
case EBoxFaceId::ZMax:
verts[0].assign(min.x(), max.y(), max.z());
verts[1] = max;
verts[2].assign(max.x(), min.y(), max.z());
verts[3].assign(min.x(), min.y(), max.z());
break;
case EBoxFaceId::ZMin:
verts[0] = min;
verts[1].assign(max.x(), min.y(), min.z());
verts[2].assign(max.x(), max.y(), min.z());
verts[3].assign(min.x(), max.y(), min.z());
break;
}
return {zeus::CPlane(verts[windOffset % 2], verts[(windOffset + 1) % 2], verts[(windOffset + 2) % 2]),
verts[windOffset % 2], verts[(windOffset + 1) % 2], verts[(windOffset + 2) % 2]};
}
} // namespace zeus