Merge default into minor

--HG--
branch : minor

src/modules/graphics/Graphics.cpp

@@ -98,6 +98,9 @@ Graphics::Graphics()
 {
 	transformStack.reserve(16);
 	transformStack.push_back(Matrix4());
+
+	pixelScaleStack.reserve(16);
+	pixelScaleStack.push_back(1);
 }
 
 Graphics::~Graphics()

src/modules/graphics/opengl/Graphics.cpp

@@ -294,10 +294,6 @@ bool Graphics::setMode(int width, int height, int pixelwidth, int pixelheight, b
 	// Restore the graphics state.
 	restoreState(states.back());
 
-	pixelScaleStack.clear();
-	pixelScaleStack.reserve(5);
-	pixelScaleStack.push_back(1);
-
 	int gammacorrect = isGammaCorrect() ? 1 : 0;
 
 	// We always need a default shader.

src/modules/math/BezierCurve.cpp

@@ -107,6 +107,9 @@ BezierCurve BezierCurve::getDerivative() const
 
 const Vector &BezierCurve::getControlPoint(int i) const
 {
+	if (controlPoints.size() == 0)
+		throw Exception("Curve contains no control points.");
+		
 	while (i < 0)
 		i += controlPoints.size();
 
@@ -118,6 +121,9 @@ const Vector &BezierCurve::getControlPoint(int i) const
 
 void BezierCurve::setControlPoint(int i, const Vector &point)
 {
+	if (controlPoints.size() == 0)
+		throw Exception("Curve contains no control points.");
+
 	while (i < 0)
 		i += controlPoints.size();
 
@@ -129,6 +135,9 @@ void BezierCurve::setControlPoint(int i, const Vector &point)
 
 void BezierCurve::insertControlPoint(const Vector &point, int i)
 {
+	if (controlPoints.size() == 0)
+		i = 0;
+
 	while (i < 0)
 		i += controlPoints.size();
 
@@ -140,6 +149,9 @@ void BezierCurve::insertControlPoint(const Vector &point, int i)
 
 void BezierCurve::removeControlPoint(int i)
 {
+	if (controlPoints.size() == 0)
+		throw Exception("No control points to remove.");
+
 	while (i < 0)
 		i += controlPoints.size();