Removed constexpr from non-constexpr constructors.

Physics::AbstractShape can not be constructed using constant expression
because it has virtual destructor.

src/Physics/AxisAlignedBox.h

@@ -27,7 +27,7 @@ namespace Magnum { namespace Physics {
 class PHYSICS_EXPORT AxisAlignedBox: public AbstractShape {
     public:
         /** @brief Constructor */
-        inline constexpr AxisAlignedBox(const Vector3& position, const Vector3& size): _position(position), _transformedPosition(position), _size(size), _transformedSize(size) {}
+        inline AxisAlignedBox(const Vector3& position, const Vector3& size): _position(position), _transformedPosition(position), _size(size), _transformedSize(size) {}
 
         void applyTransformation(const Matrix4& transformation);
 

src/Physics/Box.h

@@ -27,7 +27,7 @@ namespace Magnum { namespace Physics {
 class Box: public AbstractShape {
     public:
         /** @brief Constructor */
-        inline constexpr Box(const Matrix4& transformation): _transformation(transformation), _transformedTransformation(transformation) {}
+        inline Box(const Matrix4& transformation): _transformation(transformation), _transformedTransformation(transformation) {}
 
         inline void applyTransformation(const Matrix4& transformation) {
             _transformedTransformation = transformation*_transformation;

src/Physics/Capsule.h

@@ -34,7 +34,7 @@ applying transformation, the scale factor is averaged from all axes.
 class PHYSICS_EXPORT Capsule: public AbstractShape {
     public:
         /** @brief Constructor */
-        inline constexpr Capsule(const Vector3& a, const Vector3& b, float radius): _a(a), _transformedA(a), _b(b), _transformedB(b), _radius(radius), _transformedRadius(radius) {}
+        inline Capsule(const Vector3& a, const Vector3& b, float radius): _a(a), _transformedA(a), _b(b), _transformedB(b), _radius(radius), _transformedRadius(radius) {}
 
         void applyTransformation(const Matrix4& transformation);
 

src/Physics/LineSegment.h

@@ -27,7 +27,7 @@ namespace Magnum { namespace Physics {
 class LineSegment: public Line {
     public:
         /** @brief Constructor */
-        LineSegment(const Vector3& a, const Vector3& b): Line(a, b) {}
+        inline LineSegment(const Vector3& a, const Vector3& b): Line(a, b) {}
 
     protected:
         inline Type type() const { return Type::LineSegment; }

src/Physics/Plane.h

@@ -30,7 +30,7 @@ namespace Magnum { namespace Physics {
 class PHYSICS_EXPORT Plane: public AbstractShape {
     public:
         /** @brief Constructor */
-        inline constexpr Plane(const Vector3& position, const Vector3& normal): _position(position), _transformedPosition(position), _normal(normal), _transformedNormal(normal) {}
+        inline Plane(const Vector3& position, const Vector3& normal): _position(position), _transformedPosition(position), _normal(normal), _transformedNormal(normal) {}
 
         void applyTransformation(const Matrix4& transformation);
 

src/Physics/Point.h

@@ -27,7 +27,7 @@ namespace Magnum { namespace Physics {
 class Point: public AbstractShape {
     public:
         /** @brief Constructor */
-        inline constexpr Point(const Vector3& position): _position(position), _transformedPosition(position) {}
+        inline Point(const Vector3& position): _position(position), _transformedPosition(position) {}
 
         inline void applyTransformation(const Matrix4& transformation) {
             _transformedPosition = (transformation*Vector4(_position)).xyz();

src/Physics/ShapeGroup.h

@@ -95,7 +95,7 @@ class PHYSICS_EXPORT ShapeGroup: public AbstractShape {
         virtual Type type() const { return Type::ShapeGroup; }
 
     private:
-        inline constexpr ShapeGroup(int operation, AbstractShape* a, AbstractShape* b): operation(operation), a(a), b(b) {}
+        inline ShapeGroup(int operation, AbstractShape* a, AbstractShape* b): operation(operation), a(a), b(b) {}
 
         int operation;
         AbstractShape* a;

src/Physics/Sphere.h

@@ -35,7 +35,7 @@ applying transformation, the scale factor is averaged from all axes.
 class PHYSICS_EXPORT Sphere: public AbstractShape {
     public:
         /** @brief Constructor */
-        inline constexpr Sphere(const Vector3& position, float radius): _position(position), _transformedPosition(position), _radius(radius), _transformedRadius(radius) {}
+        inline Sphere(const Vector3& position, float radius): _position(position), _transformedPosition(position), _radius(radius), _transformedRadius(radius) {}
 
         void applyTransformation(const Matrix4& transformation);