diff options
Diffstat (limited to 'src/unittest')
| -rw-r--r-- | src/unittest/test_voxelalgorithms.cpp | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/src/unittest/test_voxelalgorithms.cpp b/src/unittest/test_voxelalgorithms.cpp index 31b9cadd5..fd83844af 100644 --- a/src/unittest/test_voxelalgorithms.cpp +++ b/src/unittest/test_voxelalgorithms.cpp @@ -21,6 +21,7 @@ with this program; if not, write to the Free Software Foundation, Inc., #include "gamedef.h" #include "voxelalgorithms.h" +#include "util/numeric.h" class TestVoxelAlgorithms : public TestBase { public: @@ -31,6 +32,7 @@ public: void testPropogateSunlight(INodeDefManager *ndef); void testClearLightAndCollectSources(INodeDefManager *ndef); + void testVoxelLineIterator(INodeDefManager *ndef); }; static TestVoxelAlgorithms g_test_instance; @@ -41,6 +43,7 @@ void TestVoxelAlgorithms::runTests(IGameDef *gamedef) TEST(testPropogateSunlight, ndef); TEST(testClearLightAndCollectSources, ndef); + TEST(testVoxelLineIterator, ndef); } //////////////////////////////////////////////////////////////////////////////// @@ -202,3 +205,59 @@ void TestVoxelAlgorithms::testClearLightAndCollectSources(INodeDefManager *ndef) UASSERT(unlight_from.size() == 1); } } + +void TestVoxelAlgorithms::testVoxelLineIterator(INodeDefManager *ndef) +{ + // Test some lines + // Do not test lines that start or end on the border of + // two voxels as rounding errors can make the test fail! + std::vector<core::line3d<f32> > lines; + for (f32 x = -9.1; x < 9; x += 3.124) { + for (f32 y = -9.2; y < 9; y += 3.123) { + for (f32 z = -9.3; z < 9; z += 3.122) { + lines.push_back(core::line3d<f32>(-x, -y, -z, x, y, z)); + } + } + } + lines.push_back(core::line3d<f32>(0, 0, 0, 0, 0, 0)); + // Test every line + std::vector<core::line3d<f32> >::iterator it = lines.begin(); + for (; it < lines.end(); it++) { + core::line3d<f32> l = *it; + + // Initialize test + voxalgo::VoxelLineIterator iterator(l.start, l.getVector()); + + //Test the first voxel + v3s16 start_voxel = floatToInt(l.start, 1); + UASSERT(iterator.m_current_node_pos == start_voxel); + + // Values for testing + v3s16 end_voxel = floatToInt(l.end, 1); + v3s16 voxel_vector = end_voxel - start_voxel; + int nodecount = abs(voxel_vector.X) + abs(voxel_vector.Y) + + abs(voxel_vector.Z); + int actual_nodecount = 0; + v3s16 old_voxel = iterator.m_current_node_pos; + + while (iterator.hasNext()) { + iterator.next(); + actual_nodecount++; + v3s16 new_voxel = iterator.m_current_node_pos; + // This must be a neighbor of the old voxel + UASSERTEQ(f32, (new_voxel - old_voxel).getLengthSQ(), 1); + // The line must intersect with the voxel + v3f voxel_center = intToFloat(iterator.m_current_node_pos, 1); + aabb3f box(voxel_center - v3f(0.5, 0.5, 0.5), + voxel_center + v3f(0.5, 0.5, 0.5)); + UASSERT(box.intersectsWithLine(l)); + // Update old voxel + old_voxel = new_voxel; + } + + // Test last node + UASSERT(iterator.m_current_node_pos == end_voxel); + // Test node count + UASSERTEQ(int, actual_nodecount, nodecount); + } +} |