Test case for recent CSG regression reported by Ed Nisley

4 files changed, 11 insertions, 1 deletions

diff --git a/testdata/scad/bugs/bbox-transform-bug.scad b/testdata/scad/bugs/bbox-transform-bug.scad
new file mode 100644
index 0000000..ccd2eab
--- /dev/null
+++ b/testdata/scad/bugs/bbox-transform-bug.scad
@@ -0,0 +1,9 @@
+//
+// Bug description: The intersection results in an empty object.
+// Cause: The rotated bounding box is wrongly calculated, yielding a
+// box which don't overlap with the bounding box of the second object.
+//
+intersection() {
+  rotate(45) cube(10);
+  translate([3,2,0]) cube(10);
+}
diff --git a/tests/CMakeLists.txt b/tests/CMakeLists.txt
index e98dd8e..20a9ede 100644
--- a/tests/CMakeLists.txt
+++ b/tests/CMakeLists.txt
@@ -531,7 +531,8 @@ list(APPEND DUMPTEST_FILES ${CMAKE_SOURCE_DIR}/../testdata/scad/misc/escape-test
 
 list(APPEND CGALPNGTEST_FILES ${FEATURES_FILES} ${SCAD_DXF_FILES} ${EXAMPLE_FILES})
 list(APPEND OPENCSGTEST_FILES ${CGALPNGTEST_FILES})
-list(APPEND THROWNTOGETHERTEST_FILES ${CGALPNGTEST_FILES})
+list(APPEND OPENCSGTEST_FILES ${CMAKE_SOURCE_DIR}/../testdata/scad/bugs/bbox-transform-bug.scad)
+list(APPEND THROWNTOGETHERTEST_FILES ${OPENCSGTEST_FILES})
 
 # Disable tests which are known to cause floating point comparison issues
 # Once we're capable of comparing these across platforms, we can put these back in
diff --git a/tests/regression/opencsgtest/bbox-transform-bug-expected.png b/tests/regression/opencsgtest/bbox-transform-bug-expected.png
new file mode 100644
index 0000000..060b921
--- /dev/null
+++ b/tests/regression/opencsgtest/bbox-transform-bug-expected.png
diff --git a/tests/regression/throwntogethertest/bbox-transform-bug-expected.png b/tests/regression/throwntogethertest/bbox-transform-bug-expected.png
new file mode 100644
index 0000000..f65e09c
--- /dev/null
+++ b/tests/regression/throwntogethertest/bbox-transform-bug-expected.png