Method printBufferSlice

hi_scripting/scripting/scriptnode/api/TestClasses.cpp:709–785

}

String Buffer2Ascii::printBufferSlice(VariantBuffer::Ptr b, int i, int numSamplesPerLine, int numCols) const
{
	String s;
	s.preallocateBytes(numCols);

	int numThisTime = jmin(numSamplesPerLine, b->size - i);

	auto magRange = b->buffer.findMinMax(0, i, numThisTime);


	char SignalChar;

	float delta = 0.0f;

	auto ptr = b->buffer.getReadPointer(0, i);

	for (int j = 1; j < numThisTime; j++)
		delta += ptr[j] - ptr[j - 1];

	float cDelta = 1.0f / ((float)numCols - 1.0f);

	if (hmath::abs(delta) < cDelta * JUCE_LIVE_CONSTANT_OFF(0.25))
		SignalChar = get(WaveformCharacters::ZeroLineChar);
	else if (delta > 0.0)
		SignalChar = get(WaveformCharacters::UpChar);
	else
		SignalChar = get(WaveformCharacters::DownChar);

	auto absStart = hmath::abs(magRange.getStart());
	auto absEnd = hmath::abs(magRange.getEnd());

	float mag = 0.0f;

	if (absStart > absEnd)
		mag = magRange.getStart();
	if (absStart < absEnd)
		mag = magRange.getEnd();
	if (absStart == absEnd)
		mag = magRange.getStart() + magRange.getLength() * 0.5f;

	mag = jlimit(-1.0f, 1.0f, mag);

	mag = (mag + 1.0f) * 0.5f;

	auto thisColIndex = roundToInt(mag * (numCols - 1));

	auto halfCol = numCols / 2;

	for (int i = 0; i < numCols; i++)
	{
		if (i == thisColIndex)
			s << SignalChar;
		else
		{
			if (i == halfCol)
			{
				s << get(WaveformCharacters::ZeroLineChar);
			}