Method drawLayer

src/app/CableWidget.cpp:309–383

void CableWidget::drawLayer(const DrawArgs& args, int layer) {
	// Cable shadow and cable
	float opacity = settings::cableOpacity;
	bool thick = false;

	if (isComplete()) {
		engine::Output* output = &cable->outputModule->outputs[cable->outputId];
		// Increase thickness if output port is polyphonic
		if (output->isPolyphonic()) {
			thick = true;
		}

		// Draw opaque if mouse is hovering over a connected port
		Widget* hoveredWidget = APP->event->hoveredWidget;
		if (outputPort == hoveredWidget || inputPort == hoveredWidget) {
			opacity = 1.0;
		}
		// Draw translucent cable if not active (i.e. 0 channels)
		else if (output->getChannels() == 0) {
			opacity *= 0.5;
		}
	}
	else {
		// Draw opaque if the cable is incomplete
		opacity = 1.0;
	}

	if (opacity <= 0.0)
		return;
	nvgAlpha(args.vg, std::pow(opacity, 1.5));

	math::Vec outputPos = getOutputPos();
	math::Vec inputPos = getInputPos();

	float thickness = thick ? 9.0 : 6.0;

	// The endpoints are off-center
	math::Vec slump = getSlumpPos(outputPos, inputPos);
	float dist = 14.f;
	outputPos = outputPos.plus(slump.minus(outputPos).normalize().mult(dist));
	inputPos = inputPos.plus(slump.minus(inputPos).normalize().mult(dist));

	nvgLineCap(args.vg, NVG_ROUND);
	// Avoids glitches when cable is bent
	nvgLineJoin(args.vg, NVG_ROUND);

	if (layer == -1) {
		// Draw cable shadow
		math::Vec shadowSlump = slump.plus(math::Vec(0, 30));
		nvgBeginPath(args.vg);
		nvgMoveTo(args.vg, VEC_ARGS(outputPos));
		nvgQuadTo(args.vg, VEC_ARGS(shadowSlump), VEC_ARGS(inputPos));
		NVGcolor shadowColor = nvgRGBAf(0, 0, 0, 0.10);
		nvgStrokeColor(args.vg, shadowColor);
		nvgStrokeWidth(args.vg, thickness - 1.0);
		nvgStroke(args.vg);
	}
	else if (layer == 0) {