Add outline rendering.

src/geometry/CMakeLists.txt

@@ -17,7 +17,8 @@ list(APPEND geometry_LIB_INCLUDES
         Rectangle.h
         Rectangle.cpp
         Triangle.h
-        Triangle.cpp)
+        Triangle.cpp
+        Transform.cpp)
         
 
 # add the library

src/geometry/Point.h

@@ -33,10 +33,18 @@ public:
 
     double getDeltaY(const Point& point) const;
 
-    void scale(double x, double y)
+    void scale(double x, double y, double z = 1.0)
     {
         mX = x*mX;
         mY = y*mY;
+        mZ = z*mZ;
+    }
+
+    void translate(double x, double y, double z = 0.0)
+    {
+        mX += x;
+        mY += y;
+        mZ += z;
     }
 
     bool operator==(const Point& rhs) const

src/geometry/Transform.cpp

@@ -0,0 +1,10 @@
+#include "Transform.h"
+
+Transform::Transform(const Point& location, double scaleX, double scaleY, double scaleZ)
+    : mLocation(location),
+      mScaleX(scaleX),
+      mScaleY(scaleY),
+      mScaleZ(scaleZ)
+{
+
+}

src/geometry/Transform.h

@@ -0,0 +1,47 @@
+#pragma once
+
+#include "Point.h"
+
+class Transform
+{
+public:
+    Transform(const Point& location = {}, double scaleX = 1.0, double scaleY = 1.0, double scaleZ = 1.0);
+
+    const Point& getLocation() const
+    {
+        return mLocation;
+    }
+
+    double getScaleX() const
+    {
+        return mScaleX;
+    }
+
+    double getScaleY() const
+    {
+        return mScaleY;
+    }
+
+    double getScaleZ() const
+    {
+        return mScaleZ;
+    }
+
+    bool operator==(const Transform& rhs) const
+    {
+       return (mLocation == rhs.mLocation)
+       && (mScaleX == rhs.mScaleX)
+       && (mScaleY == rhs.mScaleY)
+       && (mScaleZ == rhs.mScaleZ);
+    }
+    bool operator!=(const Transform& rhs) const
+    {
+      return !operator==(rhs);
+    }
+
+private:
+    Point mLocation;
+    double mScaleX{1};
+    double mScaleY{1};
+    double mScaleZ{1};
+};