Added tilt transform for envelopes

Source/envelope_component.cpp

@@ -335,7 +335,11 @@ bool EnvelopeComponent::keyPressed(const KeyPress & ev)
         r = f(m_envelope->m_transform_y_sinus,0.01);
     if (ev == 'G')
         r = f(m_envelope->m_transform_y_sinus,-0.01);
-	if (r==true)
+    if (ev == 'Y')
+        r = f(m_envelope->m_transform_y_tilt,0.02);
+    if (ev == 'H')
+        r = f(m_envelope->m_transform_y_tilt,-0.02);
+    if (r==true)
     {
         repaint();
         return true;

Source/jcdp_envelope.h

@@ -563,6 +563,7 @@ public:
 	double m_transform_y_shift = 0.0;
 	double m_transform_y_scale = 1.0;
     double m_transform_y_sinus = 0.0;
+    double m_transform_y_tilt = 0.0;
 	inline double getTransformedValue(double x)
 	{
 		if (isTransformed() == false)
@@ -574,12 +575,14 @@ public:
 		double diff = 0.5 - v;
 		double scaled = 0.5 - m_transform_y_scale * diff;
 		double shifted = scaled + m_transform_y_shift + m_transform_y_sinus*sin(2*3.141592653*(x-m_transform_x_shift)*8.0);
-        return jlimit(0.0,1.0,shifted);
+        double tiltline = 0.5+m_transform_y_tilt*x;
+        double tilted = shifted+tiltline;
+        return jlimit(0.0,1.0,tilted);
 	}
 	bool isTransformed() const
 	{
 		return m_transform_x_shift != 0.0 || m_transform_y_shift != 0.0
-        || m_transform_y_scale!=1.0 || m_transform_y_sinus!=0.0;
+        || m_transform_y_scale!=1.0 || m_transform_y_sinus!=0.0 || m_transform_y_tilt!=0.0;
 	}
 private:
     nodes_t m_nodes;