void drawWireframeBox(RenderingContext & rc, const Geometry::Box & box) {
static Util::Reference<Mesh> mesh;
if (mesh.isNull()) {
VertexDescription vertexDescription;
vertexDescription.appendPosition3D();
mesh = new Mesh(vertexDescription, 8, 16);
mesh->setDataStrategy(SimpleMeshDataStrategy::getPureLocalStrategy());
mesh->setDrawMode(Mesh::DRAW_LINE_STRIP);
MeshIndexData & id = mesh->openIndexData();
uint32_t * indices = id.data();
/*
* Corners:
* 6---------7
* /| /|
* / | / |
* 2---------3 |
* | | | |
* | 4------|--5
* | / | /
* |/ |/
* 0---------1
*/
indices[0] = 0;
indices[1] = 2;
indices[2] = 3;
indices[3] = 1;
indices[4] = 5;
indices[5] = 7;
indices[6] = 6;
indices[7] = 4;
indices[8] = 0;
indices[9] = 1;
indices[10] = 3;
indices[11] = 7;
indices[12] = 5;
indices[13] = 4;
indices[14] = 6;
indices[15] = 2;
id.updateIndexRange();
id.markAsChanged();
}
MeshVertexData & vd = mesh->openVertexData();
float * vertices = reinterpret_cast<float *>(vd.data());
for (uint_fast8_t c = 0; c < 8; ++c) {
const Geometry::Vec3 & corner = box.getCorner(static_cast<Geometry::corner_t> (c));
*vertices++ = corner.getX();
*vertices++ = corner.getY();
*vertices++ = corner.getZ();
}
vd._setBoundingBox(box);
vd.markAsChanged();
rc.displayMesh(mesh.get());
}
void BoxTest::testMisc() {
const Geometry::Box b1(-1.0f, 1.0f, -2.0f, 2.0f, -3.0f, 3.0f);
Geometry::Box b2;
b2 = Geometry::Box();
CPPUNIT_ASSERT(b2.isValid());
b2.invalidate();
CPPUNIT_ASSERT(b2.isInvalid());
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::xyz) == Geometry::Vec3(b1.getMinX(), b1.getMinY(), b1.getMinZ()));
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::Xyz) == Geometry::Vec3(b1.getMaxX(), b1.getMinY(), b1.getMinZ()));
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::xYz) == Geometry::Vec3(b1.getMinX(), b1.getMaxY(), b1.getMinZ()));
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::XYz) == Geometry::Vec3(b1.getMaxX(), b1.getMaxY(), b1.getMinZ()));
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::xyZ) == Geometry::Vec3(b1.getMinX(), b1.getMinY(), b1.getMaxZ()));
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::XyZ) == Geometry::Vec3(b1.getMaxX(), b1.getMinY(), b1.getMaxZ()));
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::xYZ) == Geometry::Vec3(b1.getMinX(), b1.getMaxY(), b1.getMaxZ()));
CPPUNIT_ASSERT(b1.getCorner(Geometry::corner_t::XYZ) == Geometry::Vec3(b1.getMaxX(), b1.getMaxY(), b1.getMaxZ()));
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::xyz) == Geometry::corner_t::XYZ);
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::Xyz) == Geometry::corner_t::xYZ);
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::xYz) == Geometry::corner_t::XyZ);
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::XYz) == Geometry::corner_t::xyZ);
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::xyZ) == Geometry::corner_t::XYz);
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::XyZ) == Geometry::corner_t::xYz);
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::xYZ) == Geometry::corner_t::Xyz);
CPPUNIT_ASSERT(Geometry::Box::getOppositeCorner(Geometry::corner_t::XYZ) == Geometry::corner_t::xyz);
CPPUNIT_ASSERT(Geometry::Helper::getNormal(Geometry::side_t::X_NEG) == Geometry::Vec3(-1.0f, 0.0f, 0.0f));
CPPUNIT_ASSERT(Geometry::Helper::getNormal(Geometry::side_t::X_POS) == Geometry::Vec3(1.0f, 0.0f, 0.0f));
CPPUNIT_ASSERT(Geometry::Helper::getNormal(Geometry::side_t::Y_NEG) == Geometry::Vec3(0.0f, -1.0f, 0.0f));
CPPUNIT_ASSERT(Geometry::Helper::getNormal(Geometry::side_t::Y_POS) == Geometry::Vec3(0.0f, 1.0f, 0.0f));
CPPUNIT_ASSERT(Geometry::Helper::getNormal(Geometry::side_t::Z_NEG) == Geometry::Vec3(0.0f, 0.0f, -1.0f));
CPPUNIT_ASSERT(Geometry::Helper::getNormal(Geometry::side_t::Z_POS) == Geometry::Vec3(0.0f, 0.0f, 1.0f));
for (uint_fast8_t s = 0; s < 6; ++s) {
const Geometry::side_t side = static_cast<const Geometry::side_t>(s);
const Geometry::corner_t * corners = Geometry::Helper::getCornerIndices(side);
for (uint_fast8_t i = 0; i < 4; ++i) {
const uint_fast8_t prevCorner = i % 4;
const uint_fast8_t currentCorner = (i + 1) % 4;
const uint_fast8_t nextCorner = (i + 2) % 4;
const Geometry::Vec3 edgeA = b1.getCorner(corners[nextCorner]) - b1.getCorner(corners[currentCorner]);
const Geometry::Vec3 edgeB = b1.getCorner(corners[prevCorner]) - b1.getCorner(corners[currentCorner]);
Geometry::Vec3 normal = edgeA.cross(edgeB);
normal.normalize();
CPPUNIT_ASSERT(Geometry::Helper::getNormal(side) == normal);
}
}
const Geometry::Vec3 v1(-1.1f, 0.0f, 0.0f);
const Geometry::Vec3 v2(0.0f, 0.0f, 0.0f);
const Geometry::Vec3 v3(1.1f, 0.0f, 0.0f);
CPPUNIT_ASSERT(!b1.contains(-1.1f, 0.0f, 0.0f));
CPPUNIT_ASSERT(b1.contains(0.0f, 0.0f, 0.0f));
CPPUNIT_ASSERT(!b1.contains(1.1f, 0.0f, 0.0f));
CPPUNIT_ASSERT(!b1.contains(v1));
CPPUNIT_ASSERT(b1.contains(v2));
CPPUNIT_ASSERT(!b1.contains(v3));
CPPUNIT_ASSERT(
Geometry::Intersection::isBoxIntersectingTriangle(b1, Geometry::Triangle<Geometry::Vec3>(v1, v2, v3)));
CPPUNIT_ASSERT(b1.contains(Geometry::Box()));
CPPUNIT_ASSERT(b1.contains(b1));
CPPUNIT_ASSERT(!b1.contains(Geometry::Box(-1.1f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f)));
CPPUNIT_ASSERT(Geometry::Intersection::isBoxIntersectingBox(Geometry::Box(0, 1, 0, 1, 0, 1),
Geometry::Box(0, 1, 0, 1, 0, 1)));
CPPUNIT_ASSERT(!Geometry::Intersection::isBoxIntersectingBox(Geometry::Box(0, 1, 0, 1, 0, 1),
Geometry::Box(2, 3, 2, 3, 2, 3)));
CPPUNIT_ASSERT(!Geometry::Intersection::isBoxIntersectingBox(Geometry::Box(0, 1, 0, 1, 0, 1),
Geometry::Box(0, 3, 2, 3, 2, 3)));
CPPUNIT_ASSERT(!Geometry::Intersection::isBoxIntersectingBox(Geometry::Box(0, 1, 0, 1, 0, 1),
Geometry::Box(2, 3, 0, 3, 2, 3)));
CPPUNIT_ASSERT(!Geometry::Intersection::isBoxIntersectingBox(Geometry::Box(0, 1, 0, 1, 0, 1),
Geometry::Box(2, 3, 2, 3, 0, 3)));
CPPUNIT_ASSERT(Geometry::Intersection::isBoxIntersectingBox(Geometry::Box(0, 1, 0, 1, 0, 1),
Geometry::Box(-1, 2, -1, 2, -1, 2)));
CPPUNIT_ASSERT(
Geometry::Intersection::isBoxIntersectingBox(b1, Geometry::Box(-1.1f, 0.0f, 0.0f, 0.0f, 0.0f, 0.0f)));
CPPUNIT_ASSERT(
!Geometry::Intersection::isBoxIntersectingBox(b1, Geometry::Box(-1.1f, -1.0f, -2.1f, -2.0f, -3.0f, -3.0f)));
b2 = Geometry::Box(0.5f, 1.5f, 1.5f, 2.5f, 2.5f, 3.5f);
CPPUNIT_ASSERT(Geometry::Intersection::isBoxIntersectingBox(b1, b2));
CPPUNIT_ASSERT(Geometry::Intersection::getBoxBoxIntersection(b1, b2)
== Geometry::Box(0.5f, 1.0f, 1.5f, 2.0f, 2.5f, 3.0f));
CPPUNIT_ASSERT(b1.getDistance(Geometry::Vec3(-2.0f, 0.0f, 0.0f)) == 1.0f);
CPPUNIT_ASSERT(b1.getDistance(Geometry::Vec3(2.0f, 0.0f, 0.0f)) == 1.0f);
CPPUNIT_ASSERT(b1.getDistance(Geometry::Vec3(0.0f, -3.0f, 0.0f)) == 1.0f);
CPPUNIT_ASSERT(b1.getDistance(Geometry::Vec3(0.0f, 3.0f, 0.0f)) == 1.0f);
CPPUNIT_ASSERT(b1.getDistance(Geometry::Vec3(0.0f, 0.0f, -4.0f)) == 1.0f);
CPPUNIT_ASSERT(b1.getDistance(Geometry::Vec3(0.0f, 0.0f, 4.0f)) == 1.0f);
CPPUNIT_ASSERT(b1.getDistanceSquared(Geometry::Vec3(-2.0f, -3.0f, -4.0f)) == 3.0f);
CPPUNIT_ASSERT(b1.getDistanceSquared(Geometry::Vec3(2.0f, 3.0f, 4.0f)) == 3.0f);
// Make sure the box b1 was never changed.
CPPUNIT_ASSERT(b1 == Geometry::Box(-1.0f, 1.0f, -2.0f, 2.0f, -3.0f, 3.0f));
}