Primitives: Plane can be now solid or wireframe.

src/Primitives/Plane.cpp

@@ -16,10 +16,12 @@
 #include "Plane.h"
 
 #include "Math/Point3D.h"
+#include "Trade/MeshData3D.h"
 
 namespace Magnum { namespace Primitives {
 
-Plane::Plane(): MeshData3D(Mesh::Primitive::TriangleStrip, nullptr, {new std::vector<Point3D>{
+Trade::MeshData3D Plane::solid() {
+    return Trade::MeshData3D(Mesh::Primitive::TriangleStrip, nullptr, {new std::vector<Point3D>{
         {1.0f, -1.0f, 0.0f},
         {1.0f, 1.0f, 0.0f},
         {-1.0f, -1.0f, 0.0f},
@@ -29,6 +31,16 @@ Plane::Plane(): MeshData3D(Mesh::Primitive::TriangleStrip, nullptr, {new std::ve
         {0.0f, 0.0f, 1.0f},
         {0.0f, 0.0f, 1.0f},
         {0.0f, 0.0f, 1.0f}
-}}, {}) {}
+    }}, {});
+}
+
+Trade::MeshData3D Plane::wireframe() {
+    return Trade::MeshData3D(Mesh::Primitive::LineLoop, nullptr, {new std::vector<Point3D>{
+        {-1.0f, -1.0f, 0.0f},
+        {1.0f, -1.0f, 0.0f},
+        {1.0f, 1.0f, 0.0f},
+        {-1.0f, 1.0f, 0.0f}
+    }}, {}, {});
+}
 
 }}

src/Primitives/Plane.h

@@ -19,7 +19,7 @@
  * @brief Class Magnum::Primitives::Plane
  */
 
-#include "Trade/MeshData3D.h"
+#include "Trade/Trade.h"
 
 namespace Magnum { namespace Primitives {
 
@@ -28,10 +28,24 @@ namespace Magnum { namespace Primitives {
 
 2x2 plane as triangle strip, non-indexed with normals in positive Z direction.
 */
-class Plane: public Trade::MeshData3D {
+class Plane {
     public:
-        /** @brief Constructor */
-        explicit Plane();
+        /**
+         * @brief Solid plane
+         *
+         * Non-indexed @ref Mesh::Primitive "TriangleStrip" with normals in
+         * positive Z direction.
+         */
+        static Trade::MeshData3D solid();
+
+        /**
+         * @brief Wireframe plane
+         *
+         * Non-indexed @ref Mesh::Primitive "LineLoop".
+         */
+        static Trade::MeshData3D wireframe();
+
+        Plane() = delete;
 };
 
 }}