Adding translate() convenience methods to Path2d and Shape2d

Author: andrewfb

include/cinder/Path2d.h

@@ -79,7 +79,9 @@ class CI_API Path2d {
 	std::vector<vec2>	subdivide( float approximationScale = 1.0f ) const;
 	//! if \a resultTangents aren't null then un-normalized tangents corresponding to \a resultPositions are calculated.
 	void				subdivide( std::vector<vec2> *resultPositions, std::vector<vec2> *resultTangents, float approximationScale = 1.0f ) const;
-	
+
+	//! Translates the Path2d by \a offset
+	void		translate( const vec2 &offset );
 	//! Scales the Path2d by \a amount.x on X and \a amount.y on Y around the center \a scaleCenter
 	void		scale( const vec2 &amount, vec2 scaleCenter = vec2() );
 	//! Transforms the Path2d by \a matrix.

include/cinder/Shape2d.h

@@ -63,6 +63,8 @@ class CI_API Shape2d {
     void			appendContour( const Path2d &contour ) { mContours.push_back( contour ); }
 	void			removeContour( size_t i ) { mContours.erase( mContours.begin() + i ); }
 
+	//! Translates the Shape2d by \a offset
+	void		translate( const vec2 &offset );
 	//! Scales the Shape2d by \a amount.x on X and \a amount.y on Y around the center \a scaleCenter
 	void		scale( const vec2 &amount, vec2 scaleCenter = vec2() );
 

src/cinder/Path2d.cpp

@@ -721,6 +721,12 @@ void Path2d::subdivide( std::vector<vec2> *resultPositions, std::vector<vec2> *r
 	}
 }
 
+void Path2d::translate( const vec2 &offset )
+{
+	for( vector<vec2>::iterator ptIt = mPoints.begin(); ptIt != mPoints.end(); ++ptIt )
+		*ptIt += offset;
+}
+
 void Path2d::scale( const vec2 &amount, vec2 scaleCenter )
 {
 	for( vector<vec2>::iterator ptIt = mPoints.begin(); ptIt != mPoints.end(); ++ptIt )

src/cinder/Shape2d.cpp

@@ -73,6 +73,12 @@ void Shape2d::append( const Shape2d &shape )
 		appendContour( *pathIt );
 }
 
+void Shape2d::translate( const vec2 &offset )
+{
+	for( vector<Path2d>::iterator contIt = mContours.begin(); contIt != mContours.end(); ++contIt )
+		contIt->translate( offset );
+}
+
 void Shape2d::scale( const vec2 &amount, vec2 scaleCenter )
 {
 	for( vector<Path2d>::iterator contIt = mContours.begin(); contIt != mContours.end(); ++contIt )