1 files changed, 22 insertions, 0 deletions
diff --git a/WebCore/platform/graphics/FloatPoint3D.h b/WebCore/platform/graphics/FloatPoint3D.h
index b6cbaa8..ba0ee9d 100644
--- a/WebCore/platform/graphics/FloatPoint3D.h
+++ b/WebCore/platform/graphics/FloatPoint3D.h
@@ -84,6 +84,11 @@ public:
         m_z *= sz;
     }
 
+    bool isZero() const
+    {
+        return !m_x && !m_y && !m_z;
+    }
+
     void normalize();
 
     float dot(const FloatPoint3D& a) const
@@ -115,6 +120,8 @@ public:
 
     float lengthSquared() const { return this->dot(*this); }
     float length() const { return sqrtf(lengthSquared()); }
+    
+    float distanceTo(const FloatPoint3D& a) const;
 
 private:
     float m_x;
@@ -160,6 +167,21 @@ inline float operator*(const FloatPoint3D& a, const FloatPoint3D& b)
     return a.dot(b);
 }
 
+inline FloatPoint3D operator*(float k, const FloatPoint3D& v)
+{
+    return FloatPoint3D(k * v.x(), k * v.y(), k * v.z());
+}
+
+inline FloatPoint3D operator*(const FloatPoint3D& v, float k)
+{
+    return FloatPoint3D(k * v.x(), k * v.y(), k * v.z());
+}
+
+inline float FloatPoint3D::distanceTo(const FloatPoint3D& a) const
+{
+    return (*this - a).length();
+}
+
 } // namespace WebCore
 
 #endif // FloatPoint3D_h