示例#1
0
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());
}
示例#2
0
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));
}