progress at term deadline

Lab6/viewcontext.h

@@ -5,15 +5,41 @@
 
 
 class ViewContext{
-        ViewContext();
-        void model_to_device();
+    public:
+    // Contructor - takes in current window width and height to account for origin
+    ViewContext(int width, int height);
+    // Destructor
+    ~ViewContext();
+    
+    void model_to_device(Matrix* coord);
+    // Rotation - Around center of screen
+    void rotate(int deg);
+    
+    // Scaling - Around center of screen
+    void scale(int mult);
+    
+    // Translation
+    void translate(int dx, int dy, int dz);
 
-        // Rotation - Around center of screen
-        // Scaling - Around center of screen
-        // Translation
-        // Reset
-        // Invert Colors
-        Matrix* compMatrix;
+    // Reset
+    void reset();
+
+    // Undo previous transform
+    void undo(Matrix* coord);
+
+    // Invert Colors
+    //void invert();
+
+    private:
+    // Window pixel width
+    int width;
+    // Window pixel height
+    int height;
+    // Matrix containing the composite of all current transformations
+    Matrix* compMatrix;
+    // Matrix containing the previous transformation
+    Matrix* prevTransform;
+    
 };
 
 #endif