Method paint

shared/components/ControlPointComponent.cpp:88–146

}

void ControlPointComponent::paint (Graphics& g)
{
//    g.fillAll(Colours::purple);
//    g.setColour(Colours::purple);
//
//    Rectangle<int> drawRect(getBounds().getX(), getBounds().getY(), getBounds().getWidth(), getBounds().getHeight());
//    g.drawRect(drawRect);
//

    if (points.size() >= 3)
    {
        Array<juce::Point<double>> dpoints;
        for (auto p : points)
            dpoints.add ({ double (p.getX()), double (p.getY())});
        
        Spline spline (dpoints);

        g.setColour (Colours::red);

        Path p;

        p.startNewSubPath (points.getFirst().toFloat());
        for (int x = points.getFirst().getX(); x < points.getLast().getX(); x++)
        {
            double y = spline.interpolate (x);
            if(y < 0.0) {
                y = 2.0;
            }
            else if(y > (double)getLocalBounds().getBottom()) {
                y = (double)getLocalBounds().getBottom() - 2.0;
            }
            
            p.lineTo (float (x), float (y));
        }
        p.lineTo (points.getLast().toFloat());

        g.strokePath (p, PathStrokeType (2));
    }
    else if(points.size() == 2) {
        g.setColour (Colours::red);

        Path p;

        p.startNewSubPath (points.getFirst().toFloat());
        for (auto& point : points)
        {
            p.lineTo (float (point.x), float (point.y));
        }

        g.strokePath (p, PathStrokeType (2));
    }

    g.setColour (Colours::blue);
    for (auto pt : points)
        g.fillEllipse ((float)pt.getX() - 4.f, (float)pt.getY() - 4.f, 8.0f, 8.0f);

    if (points.isEmpty())
        g.drawText ("Click from left to right to add points.\n Double click to remove.", getLocalBounds(), Justification::centred);