Using Object::Transformation enum instead of bool.

Added just-to-be-sure unit test.

src/Object.h

@@ -86,6 +86,15 @@ class MAGNUM_EXPORT Object {
          * to parent.
          */
 
+        /** @brief Transformation type */
+        enum class Transformation: char {
+            /** Global transformation, applied after all other transformations. */
+            Global = 0x00,
+
+            /** Local transformation, applied before all other transformations. */
+            Local = 0x01
+        };
+
         /** @brief Transformation */
         inline Matrix4 transformation() const {
             return _transformation;
@@ -111,12 +120,11 @@ class MAGNUM_EXPORT Object {
         /**
          * @brief Multiply transformation
          * @param transformation    Transformation
-         * @param global            Whether to apply transformation as global
+         * @param type              Transformation type
-         *      (multiply from left side) or as local (multiply from right
-         *      side)
          */
-        inline Object* multiplyTransformation(const Matrix4& transformation, bool global = true) {
+        inline Object* multiplyTransformation(const Matrix4& transformation, Transformation type = Transformation::Global) {
-            setTransformation(global ? transformation*_transformation : _transformation*transformation);
+            setTransformation(type == Transformation::Global ?
+                transformation*_transformation : _transformation*transformation);
             return this;
         }
 
@@ -125,8 +133,8 @@ class MAGNUM_EXPORT Object {
          *
          * Same as calling multiplyTransformation() with Matrix4::translation().
          */
-        inline Object* translate(Vector3 vec, bool global = true) {
+        inline Object* translate(Vector3 vec, Transformation type = Transformation::Global) {
-            multiplyTransformation(Matrix4::translation(vec), global);
+            multiplyTransformation(Matrix4::translation(vec), type);
             return this;
         }
 
@@ -135,8 +143,8 @@ class MAGNUM_EXPORT Object {
          *
          * Same as calling multiplyTransformation() with Matrix4::scaling().
          */
-        inline Object* scale(Vector3 vec, bool global = true) {
+        inline Object* scale(Vector3 vec, Transformation type = Transformation::Global) {
-            multiplyTransformation(Matrix4::scaling(vec), global);
+            multiplyTransformation(Matrix4::scaling(vec), type);
             return this;
         }
 
@@ -145,8 +153,8 @@ class MAGNUM_EXPORT Object {
          *
          * Same as calling multiplyTransformation() with Matrix4::rotation().
          */
-        inline Object* rotate(GLfloat angle, Vector3 vec, bool global = true) {
+        inline Object* rotate(GLfloat angle, Vector3 vec, Transformation type = Transformation::Global) {
-            multiplyTransformation(Matrix4::rotation(angle, vec), global);
+            multiplyTransformation(Matrix4::rotation(angle, vec), type);
             return this;
         }
 

src/Scene.h

@@ -38,10 +38,10 @@ class MAGNUM_EXPORT Scene: public Object {
 
         void setParent(Object* parent) = delete;
         void setTransformation(const Matrix4& transformation) = delete;
-        void multiplyTransformation(const Matrix4& transformation, bool global = true) = delete;
+        void multiplyTransformation(const Matrix4& transformation, Transformation type = Transformation::Global) = delete;
-        void translate(Vector3 vec, bool global = true) = delete;
+        void translate(Vector3 vec, Transformation type = Transformation::Global) = delete;
-        void scale(Vector3 vec, bool global = true) = delete;
+        void scale(Vector3 vec, Transformation type = Transformation::Global) = delete;
-        void rotate(GLfloat angle, Vector3 vec, bool global = true) = delete;
+        void rotate(GLfloat angle, Vector3 vec, Transformation type = Transformation::Global) = delete;
 
         /** @brief Which features are set */
         inline unsigned int features() const { return _features; }

src/Test/ObjectTest.cpp

@@ -49,6 +49,27 @@ void ObjectTest::parenting() {
     QVERIFY(childOne->children().size() == 0);
 }
 
+void ObjectTest::transformation() {
+    Object o;
+    Object o2;
+
+    o.setTransformation(Matrix4::translation(Vector3::xAxis(1.0f)));
+    o2.translate(Vector3::xAxis(1.0f));
+    o.multiplyTransformation(Matrix4::rotation(deg(35.0f), Vector3::zAxis()));
+    o2.rotate(deg(35.0f), Vector3::zAxis());
+
+    QVERIFY(o.transformation() == Matrix4::rotation(deg(35.0f), Vector3::zAxis())*
+        Matrix4::translation(Vector3::xAxis(1.0f)));
+    QVERIFY(o2.transformation() == o.transformation());
+
+    o.multiplyTransformation(Matrix4::scaling(Vector3(2.0f)), Object::Transformation::Local);
+    o2.scale(Vector3(2.0f), Object::Transformation::Local);
+    QVERIFY(o.transformation() == Matrix4::rotation(deg(35.0f), Vector3::zAxis())*
+        Matrix4::translation(Vector3::xAxis(1.0f))*
+        Matrix4::scaling(Vector3(2.0f)));
+    QVERIFY(o2.transformation() == o.transformation());
+}
+
 void ObjectTest::scene() {
     Scene scene;
 

src/Test/ObjectTest.h

@@ -26,6 +26,7 @@ class ObjectTest: public QObject {
 
     private slots:
         void parenting();
+        void transformation();
         void scene();
         void dirty();
 };