xyzpad

// .h

class XYPadComponent : public Component, public Value::Listener
{
public:
	XYPadComponent(BinauralSpatAudioProcessor& p);
	void valueChanged(Value& value) override;
	void mouseDrag(const MouseEvent& ev) override;
	void mouseWheelMove(const MouseEvent& ev, const MouseWheelDetails& det) override;
	void paint(Graphics& g) override;
private:
	BinauralSpatAudioProcessor& m_processor;
	Value m_xpos0;
	Value m_ypos0;
	Value m_zpos0;
};

// .cpp

XYPadComponent::XYPadComponent(BinauralSpatAudioProcessor & p) : m_processor(p)
{
	m_xpos0 = m_processor.m_state.getParameterAsValue("pos0x");
	m_xpos0.addListener(this);
	m_ypos0 = m_processor.m_state.getParameterAsValue("pos0y");
	m_ypos0.addListener(this);
	m_zpos0 = m_processor.m_state.getParameterAsValue("pos0z");
	m_zpos0.addListener(this);
}

void XYPadComponent::valueChanged(Value & value)
{
	repaint();
}

void XYPadComponent::mouseDrag(const MouseEvent & ev)
{
	m_xpos0 = jlimit<float>(-1.0, 1.0, jmap<float>(ev.x, 0.0, getWidth(), -1.0, 1.0));
	m_ypos0 = jlimit<float>(-1.0, 1.0, jmap<float>(ev.y, 0.0, getHeight(), -1.0, 1.0));
}

void XYPadComponent::mouseWheelMove(const MouseEvent & ev, const MouseWheelDetails & det)
{
	float curval = m_zpos0.getValue();
	if (det.deltaY < 0.0)
		curval -= 0.05f;
	if (det.deltaY > 0.0)
		curval += 0.05f;
	m_zpos0 = jlimit(-1.0f, 1.0f, curval);
}

void XYPadComponent::paint(Graphics & g)
{
	g.fillAll(Colours::black);
	g.setColour(Colours::white);
	float xcor = jmap<float>(m_xpos0.getValue(), -1.0, 1.0, 0.0, getWidth());
	float ycor = jmap<float>(m_ypos0.getValue(), -1.0, 1.0, 0.0, getHeight());
	float zsize = jmap<float>(m_zpos0.getValue(), -1.0, 1.0, 2.0, 50.0);
	g.fillEllipse(xcor - zsize / 2.0, ycor - zsize / 2.0, zsize, zsize);
	g.drawText(String(m_valuechangecount), 10, 10, 100, 50, Justification::centred);
}