Method RenderBuffer

Source/VisualizerScope.cpp:63–109

}

void CVisualizerScope::RenderBuffer()
{
	const float SAMPLE_SCALING	= 1200.0f;

	const COLORREF LINE_COL1 = 0xFFFFFF;
	const COLORREF LINE_COL2 = 0x808080;

	const int BLUR_COLORS[] = {3, 12, 12};

	const float HALF_HEIGHT = float(m_iHeight) / 2.0f;

	if (m_bBlur)
		BlurBuffer(m_pBlitBuffer.get(), m_iWidth, m_iHeight, BLUR_COLORS);
	else
		ClearBackground();

	float Sample = -float(m_pWindowBuf[0]) / SAMPLE_SCALING;

	for (float x = 0.0f; x < float(m_iWidth); ++x) {
		float LastSample = Sample;
		Sample = -float(m_pWindowBuf[int(x)]) / SAMPLE_SCALING;

		if (Sample < -HALF_HEIGHT + 1)
			Sample = -HALF_HEIGHT + 1;
		if (Sample > HALF_HEIGHT - 1)
			Sample = HALF_HEIGHT - 1;

		PutPixel(m_pBlitBuffer.get(), m_iWidth, m_iHeight, x, Sample + HALF_HEIGHT - 0.5f, LINE_COL2);
		PutPixel(m_pBlitBuffer.get(), m_iWidth, m_iHeight, x, Sample + HALF_HEIGHT + 0.5f, LINE_COL2);
		PutPixel(m_pBlitBuffer.get(), m_iWidth, m_iHeight, x, Sample + HALF_HEIGHT + 0.0f, LINE_COL1);

		if ((Sample - LastSample) > 1.0f) {
			float frac = LastSample - floor(LastSample);
			for (float y = LastSample; y < Sample; ++y) {
				float Offset = (y - LastSample) / (Sample - LastSample);
				PutPixel(m_pBlitBuffer.get(), m_iWidth, m_iHeight, x + Offset - 1.0f, y + HALF_HEIGHT + frac, LINE_COL1);
			}
		}
		else if ((LastSample - Sample) > 1.0f) {
			float frac = Sample - floor(Sample);
			for (float y = Sample; y < LastSample; ++y) {
				float Offset = (y - Sample) / (LastSample - Sample);
				PutPixel(m_pBlitBuffer.get(), m_iWidth, m_iHeight, x - Offset, y + HALF_HEIGHT + frac, LINE_COL1);
			}
		}
	}
}

void CVisualizerScope::Draw()
{