Add destructor callbacks for polymorphic C types, and use their base

dmnsn_delete_*() function.

8 files changed, 17 insertions, 33 deletions

diff --git a/libdimensionxx/camera.cpp b/libdimensionxx/camera.cpp
index b44173c..5786055 100644
--- a/libdimensionxx/camera.cpp
+++ b/libdimensionxx/camera.cpp
@@ -22,9 +22,13 @@
 
 namespace Dimension
 {
-  // Virtual no-op destructor
+  // Virtual destructor
   Camera::~Camera()
-  { }
+  {
+    if (unique()) {
+      dmnsn_delete_camera(dmnsn());
+    }
+  }
 
   // Return the result of the dmnsn_camera*'s ray callback
   Line
diff --git a/libdimensionxx/cameras.cpp b/libdimensionxx/cameras.cpp
index ca571be..5d84c4f 100644
--- a/libdimensionxx/cameras.cpp
+++ b/libdimensionxx/cameras.cpp
@@ -31,14 +31,6 @@ namespace Dimension
     }
   }
 
-  // Delete a perspective camera, if we're the last reference
-  Perspective_Camera::~Perspective_Camera()
-  {
-    if (unique()) {
-      dmnsn_delete_perspective_camera(dmnsn());
-    }
-  }
-
   // Get the transformation matrix
   Matrix
   Perspective_Camera::trans()
diff --git a/libdimensionxx/dimensionxx/camera.hpp b/libdimensionxx/dimensionxx/camera.hpp
index d8743ce..fa13a7e 100644
--- a/libdimensionxx/dimensionxx/camera.hpp
+++ b/libdimensionxx/dimensionxx/camera.hpp
@@ -29,7 +29,7 @@ namespace Dimension
   class Camera
   {
   public:
-    // No-op
+    // Delete the camera
     virtual ~Camera();
 
     // Camera callback
diff --git a/libdimensionxx/dimensionxx/cameras.hpp b/libdimensionxx/dimensionxx/cameras.hpp
index 1764ac5..364ea4c 100644
--- a/libdimensionxx/dimensionxx/cameras.hpp
+++ b/libdimensionxx/dimensionxx/cameras.hpp
@@ -30,7 +30,7 @@ namespace Dimension
   {
   public:
     Perspective_Camera(const Matrix& trans);
-    ~Perspective_Camera();
+    // ~Perspective_Camera();
 
     // Get/set the transformation matrix
     Matrix trans();
diff --git a/libdimensionxx/dimensionxx/object.hpp b/libdimensionxx/dimensionxx/object.hpp
index 30dadf8..6505162 100644
--- a/libdimensionxx/dimensionxx/object.hpp
+++ b/libdimensionxx/dimensionxx/object.hpp
@@ -29,7 +29,7 @@ namespace Dimension
   class Object
   {
   public:
-    // No-op
+    // Delete the object
     virtual ~Object();
 
     // Get/set the transformation matrix
diff --git a/libdimensionxx/dimensionxx/objects.hpp b/libdimensionxx/dimensionxx/objects.hpp
index f86b2b3..15c072b 100644
--- a/libdimensionxx/dimensionxx/objects.hpp
+++ b/libdimensionxx/dimensionxx/objects.hpp
@@ -30,7 +30,7 @@ namespace Dimension
   {
   public:
     Sphere();
-    ~Sphere();
+    // ~Sphere();
 
     // Shallow-copy the sphere
     Object* copy();
@@ -46,7 +46,7 @@ namespace Dimension
   {
   public:
     Cube();
-    ~Cube();
+    // ~Cube();
 
     // Shallow-copy the cube
     Object* copy();
diff --git a/libdimensionxx/object.cpp b/libdimensionxx/object.cpp
index e5384db..9c28e22 100644
--- a/libdimensionxx/object.cpp
+++ b/libdimensionxx/object.cpp
@@ -22,9 +22,13 @@
 
 namespace Dimension
 {
-  // Virtual no-op destructor
+  // Virtual destructor
   Object::~Object()
-  { }
+  {
+    if (unique()) {
+      dmnsn_delete_object(dmnsn());
+    }
+  }
 
   // Get the transformation matrix
   Matrix
diff --git a/libdimensionxx/objects.cpp b/libdimensionxx/objects.cpp
index 2272586..7bedd92 100644
--- a/libdimensionxx/objects.cpp
+++ b/libdimensionxx/objects.cpp
@@ -31,14 +31,6 @@ namespace Dimension
     }
   }
 
-  // Delete a sphere
-  Sphere::~Sphere()
-  {
-    if (unique()) {
-      dmnsn_delete_sphere(dmnsn());
-    }
-  }
-
   // Shallow copy a sphere
   Object*
   Sphere::copy()
@@ -60,14 +52,6 @@ namespace Dimension
     }
   }
 
-  // Delete a sphere
-  Cube::~Cube()
-  {
-    if (unique()) {
-      dmnsn_delete_cube(dmnsn());
-    }
-  }
-
   // Shallow copy a cube
   Object*
   Cube::copy()