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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.
//
///////////////////////////////////////////////////////////////////////////
/// @file unittest/TestVolumeRayIntersector.cc
/// @author Ken Museth
#include <openvdb/openvdb.h>
#include <openvdb/math/Ray.h>
#include <openvdb/Types.h>
#include <openvdb/math/Transform.h>
#include <openvdb/tools/LevelSetSphere.h>
#include <openvdb/tools/RayIntersector.h>
#include <cppunit/extensions/HelperMacros.h>
#include <cassert>
#include <deque>
#include <iostream>
#include <vector>
#define ASSERT_DOUBLES_APPROX_EQUAL(expected, actual) \
CPPUNIT_ASSERT_DOUBLES_EQUAL((expected), (actual), /*tolerance=*/1.e-6);
class TestVolumeRayIntersector : public CppUnit::TestCase
{
public:
CPPUNIT_TEST_SUITE(TestVolumeRayIntersector);
CPPUNIT_TEST(testAll);
CPPUNIT_TEST_SUITE_END();
void testAll();
};
CPPUNIT_TEST_SUITE_REGISTRATION(TestVolumeRayIntersector);
void
TestVolumeRayIntersector::testAll()
{
using namespace openvdb;
typedef math::Ray<double> RayT;
typedef RayT::Vec3Type Vec3T;
{//one single leaf node
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0,0,0), 1.0f);
grid.tree().setValue(Coord(7,7,7), 1.0f);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL( 9.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{//same as above but with dilation
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0,0,0), 1.0f);
grid.tree().setValue(Coord(7,7,7), 1.0f);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid, 1);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL( 0.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{//one single leaf node
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(1,1,1), 1.0f);
grid.tree().setValue(Coord(7,3,3), 1.0f);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL( 9.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{//same as above but with dilation
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(1,1,1), 1.0f);
grid.tree().setValue(Coord(7,3,3), 1.0f);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid, 1);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{//two adjacent leaf nodes
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0,0,0), 1.0f);
grid.tree().setValue(Coord(8,0,0), 1.0f);
grid.tree().setValue(Coord(15,7,7), 1.0f);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{//two adjacent leafs followed by a gab and leaf
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0*8,0,0), 1.0f);
grid.tree().setValue(Coord(1*8,0,0), 1.0f);
grid.tree().setValue(Coord(3*8,0,0), 1.0f);
grid.tree().setValue(Coord(3*8+7,7,7), 1.0f);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1);
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL(25.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(33.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{//two adjacent leafs followed by a gab, a leaf and an active tile
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0*8,0,0), 1.0f);
grid.tree().setValue(Coord(1*8,0,0), 1.0f);
grid.tree().setValue(Coord(3*8,0,0), 1.0f);
grid.fill(CoordBBox(Coord(4*8,0,0), Coord(4*8+7,7,7)), 2.0f, true);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(17.0, t1);
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL(25.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(41.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{//two adjacent leafs followed by a gab, a leaf and an active tile
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0*8,0,0), 1.0f);
grid.tree().setValue(Coord(1*8,0,0), 1.0f);
grid.tree().setValue(Coord(3*8,0,0), 1.0f);
grid.fill(CoordBBox(Coord(4*8,0,0), Coord(4*8+7,7,7)), 2.0f, true);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
std::vector<RayT::TimeSpan> list;
inter.hits(list);
CPPUNIT_ASSERT(list.size() == 2);
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, list[0].t0);
ASSERT_DOUBLES_APPROX_EQUAL(17.0, list[0].t1);
ASSERT_DOUBLES_APPROX_EQUAL(25.0, list[1].t0);
ASSERT_DOUBLES_APPROX_EQUAL(41.0, list[1].t1);
}
{//same as above but now with std::deque instead of std::vector
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0*8,0,0), 1.0f);
grid.tree().setValue(Coord(1*8,0,0), 1.0f);
grid.tree().setValue(Coord(3*8,0,0), 1.0f);
grid.fill(CoordBBox(Coord(4*8,0,0), Coord(4*8+7,7,7)), 2.0f, true);
const Vec3T dir( 1.0, 0.0, 0.0);
const Vec3T eye(-1.0, 0.0, 0.0);
const RayT ray(eye, dir);//ray in index space
tools::VolumeRayIntersector<FloatGrid> inter(grid);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
std::deque<RayT::TimeSpan> list;
inter.hits(list);
CPPUNIT_ASSERT(list.size() == 2);
ASSERT_DOUBLES_APPROX_EQUAL( 1.0, list[0].t0);
ASSERT_DOUBLES_APPROX_EQUAL(17.0, list[0].t1);
ASSERT_DOUBLES_APPROX_EQUAL(25.0, list[1].t0);
ASSERT_DOUBLES_APPROX_EQUAL(41.0, list[1].t1);
}
{// Test submitted by "Jan" @ GitHub
FloatGrid grid(0.0f);
grid.tree().setValue(Coord(0*8,0,0), 1.0f);
grid.tree().setValue(Coord(1*8,0,0), 1.0f);
grid.tree().setValue(Coord(3*8,0,0), 1.0f);
tools::VolumeRayIntersector<FloatGrid> inter(grid);
const Vec3T dir(-1.0, 0.0, 0.0);
const Vec3T eye(50.0, 0.0, 0.0);
const RayT ray(eye, dir);
CPPUNIT_ASSERT(inter.setIndexRay(ray));
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL(18.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(26.0, t1);
CPPUNIT_ASSERT(inter.march(t0, t1));
ASSERT_DOUBLES_APPROX_EQUAL(34.0, t0);
ASSERT_DOUBLES_APPROX_EQUAL(50.0, t1);
CPPUNIT_ASSERT(!inter.march(t0, t1));
}
{// Test submitted by "Trevor" @ GitHub
FloatGrid::Ptr grid = createGrid<FloatGrid>(0.0f);
grid->tree().setValue(Coord(0,0,0), 1.0f);
tools::dilateVoxels(grid->tree());
tools::VolumeRayIntersector<FloatGrid> inter(*grid);
//std::cerr << "BBox = " << inter.bbox() << std::endl;
const Vec3T eye(-0.25, -0.25, 10.0);
const Vec3T dir( 0.00, 0.00, -1.0);
const RayT ray(eye, dir);
CPPUNIT_ASSERT(inter.setIndexRay(ray));// hits bbox
double t0=0, t1=0;
CPPUNIT_ASSERT(!inter.march(t0, t1));// misses leafs
}
{// Test submitted by "Trevor" @ GitHub
FloatGrid::Ptr grid = createGrid<FloatGrid>(0.0f);
grid->tree().setValue(Coord(0,0,0), 1.0f);
tools::dilateVoxels(grid->tree());
tools::VolumeRayIntersector<FloatGrid> inter(*grid);
//GridPtrVec grids;
//grids.push_back(grid);
//io::File vdbfile("trevor_v1.vdb");
//vdbfile.write(grids);
//std::cerr << "BBox = " << inter.bbox() << std::endl;
const Vec3T eye(0.75, 0.75, 10.0);
const Vec3T dir( 0.00, 0.00, -1.0);
const RayT ray(eye, dir);
CPPUNIT_ASSERT(inter.setIndexRay(ray));// hits bbox
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));// misses leafs
//std::cerr << "t0=" << t0 << " t1=" << t1 << std::endl;
}
{// Test derived from the test submitted by "Trevor" @ GitHub
FloatGrid grid(0.0f);
grid.fill(math::CoordBBox(Coord(-1,-1,-1),Coord(1,1,1)), 1.0f);
tools::VolumeRayIntersector<FloatGrid> inter(grid);
//std::cerr << "BBox = " << inter.bbox() << std::endl;
const Vec3T eye(-0.25, -0.25, 10.0);
const Vec3T dir( 0.00, 0.00, -1.0);
const RayT ray(eye, dir);
CPPUNIT_ASSERT(inter.setIndexRay(ray));// hits bbox
double t0=0, t1=0;
CPPUNIT_ASSERT(inter.march(t0, t1));// hits leafs
//std::cerr << "t0=" << t0 << " t1=" << t1 << std::endl;
}
}
// 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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