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///////////////////////////////////////////////////////////////////////////
//
// Copyright (c) 2012-2018 DreamWorks Animation LLC
//
// All rights reserved. This software is distributed under the
// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
//
// Redistributions of source code must retain the above copyright
// and license notice and the following restrictions and disclaimer.
//
// * Neither the name of DreamWorks Animation nor the names of
// its contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// IN NO EVENT SHALL THE COPYRIGHT HOLDERS' AND CONTRIBUTORS' AGGREGATE
// LIABILITY FOR ALL CLAIMS REGARDLESS OF THEIR BASIS EXCEED US$250.00.
//
///////////////////////////////////////////////////////////////////////////
#include <vector>
#include <cppunit/extensions/HelperMacros.h>
#include <openvdb/openvdb.h>
#include <openvdb/Exceptions.h>
#include <openvdb/tools/MeshToVolume.h>
#include <openvdb/util/Util.h>
class TestMeshToVolume: public CppUnit::TestCase
{
public:
CPPUNIT_TEST_SUITE(TestMeshToVolume);
CPPUNIT_TEST(testUtils);
CPPUNIT_TEST(testConversion);
CPPUNIT_TEST(testCreateLevelSetBox);
CPPUNIT_TEST_SUITE_END();
void testUtils();
void testConversion();
void testCreateLevelSetBox();
};
CPPUNIT_TEST_SUITE_REGISTRATION(TestMeshToVolume);
////////////////////////////////////////
void
TestMeshToVolume::testUtils()
{
/// Test nearestCoord
openvdb::Vec3d xyz(0.7, 2.2, -2.7);
openvdb::Coord ijk = openvdb::util::nearestCoord(xyz);
CPPUNIT_ASSERT(ijk[0] == 0 && ijk[1] == 2 && ijk[2] == -3);
xyz = openvdb::Vec3d(-22.1, 4.6, 202.34);
ijk = openvdb::util::nearestCoord(xyz);
CPPUNIT_ASSERT(ijk[0] == -23 && ijk[1] == 4 && ijk[2] == 202);
/// Test the coordinate offset table for neghbouring voxels
openvdb::Coord sum(0, 0, 0);
unsigned int pX = 0, pY = 0, pZ = 0, mX = 0, mY = 0, mZ = 0;
for (unsigned int i = 0; i < 26; ++i) {
ijk = openvdb::util::COORD_OFFSETS[i];
sum += ijk;
if (ijk[0] == 1) ++pX;
else if (ijk[0] == -1) ++mX;
if (ijk[1] == 1) ++pY;
else if (ijk[1] == -1) ++mY;
if (ijk[2] == 1) ++pZ;
else if (ijk[2] == -1) ++mZ;
}
CPPUNIT_ASSERT(sum == openvdb::Coord(0, 0, 0));
CPPUNIT_ASSERT( pX == 9);
CPPUNIT_ASSERT( pY == 9);
CPPUNIT_ASSERT( pZ == 9);
CPPUNIT_ASSERT( mX == 9);
CPPUNIT_ASSERT( mY == 9);
CPPUNIT_ASSERT( mZ == 9);
}
void
TestMeshToVolume::testConversion()
{
using namespace openvdb;
std::vector<Vec3s> points;
std::vector<Vec4I> quads;
// cube vertices
points.push_back(Vec3s(2, 2, 2)); // 0 6--------7
points.push_back(Vec3s(5, 2, 2)); // 1 /| /|
points.push_back(Vec3s(2, 5, 2)); // 2 2--------3 |
points.push_back(Vec3s(5, 5, 2)); // 3 | | | |
points.push_back(Vec3s(2, 2, 5)); // 4 | 4------|-5
points.push_back(Vec3s(5, 2, 5)); // 5 |/ |/
points.push_back(Vec3s(2, 5, 5)); // 6 0--------1
points.push_back(Vec3s(5, 5, 5)); // 7
// cube faces
quads.push_back(Vec4I(0, 1, 3, 2)); // front
quads.push_back(Vec4I(5, 4, 6, 7)); // back
quads.push_back(Vec4I(0, 2, 6, 4)); // left
quads.push_back(Vec4I(1, 5, 7, 3)); // right
quads.push_back(Vec4I(2, 3, 7, 6)); // top
quads.push_back(Vec4I(0, 4, 5, 1)); // bottom
math::Transform::Ptr xform = math::Transform::createLinearTransform();
tools::QuadAndTriangleDataAdapter<Vec3s, Vec4I> mesh(points, quads);
FloatGrid::Ptr grid = tools::meshToVolume<FloatGrid>(mesh, *xform);
CPPUNIT_ASSERT(grid.get() != NULL);
CPPUNIT_ASSERT_EQUAL(int(GRID_LEVEL_SET), int(grid->getGridClass()));
CPPUNIT_ASSERT_EQUAL(1, int(grid->baseTree().leafCount()));
grid = tools::meshToLevelSet<FloatGrid>(*xform, points, quads);
CPPUNIT_ASSERT(grid.get() != NULL);
CPPUNIT_ASSERT_EQUAL(int(GRID_LEVEL_SET), int(grid->getGridClass()));
CPPUNIT_ASSERT_EQUAL(1, int(grid->baseTree().leafCount()));
}
void
TestMeshToVolume::testCreateLevelSetBox()
{
typedef openvdb::FloatGrid FloatGrid;
typedef openvdb::Vec3s Vec3s;
typedef openvdb::math::BBox<Vec3s> BBoxs;
typedef openvdb::math::Transform Transform;
BBoxs bbox(Vec3s(0.0, 0.0, 0.0), Vec3s(1.0, 1.0, 1.0));
Transform::Ptr transform = Transform::createLinearTransform(0.1);
FloatGrid::Ptr grid = openvdb::tools::createLevelSetBox<FloatGrid>(bbox, *transform);
double gridBackground = grid->background();
double expectedBackground = transform->voxelSize().x() * double(openvdb::LEVEL_SET_HALF_WIDTH);
CPPUNIT_ASSERT_DOUBLES_EQUAL(expectedBackground, gridBackground, 1e-6);
CPPUNIT_ASSERT(grid->tree().leafCount() > 0);
// test inside coord value
openvdb::Coord ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(0.5, 0.5, 0.5));
CPPUNIT_ASSERT(grid->tree().getValue(ijk) < 0.0f);
// test outside coord value
ijk = transform->worldToIndexNodeCentered(openvdb::Vec3d(1.5, 1.5, 1.5));
CPPUNIT_ASSERT(grid->tree().getValue(ijk) > 0.0f);
}
// Copyright (c) 2012-2018 DreamWorks Animation LLC
// All rights reserved. This software is distributed under the
// Mozilla Public License 2.0 ( http://www.mozilla.org/MPL/2.0/ )
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