visualizer: ellipse is now closer to circular and the colors change faster

src/visualizer.cpp

@@ -225,13 +225,13 @@ void Visualizer::DrawSoundWaveFillStereo(int16_t *buf_left, int16_t *buf_right,
 void Visualizer::DrawSoundEllipseStereo(int16_t *buf_left, int16_t *buf_right, ssize_t samples, size_t height)
 {
 	const long width = w.getWidth()/2;
-	const long scaledRadius = std::max(pow(width,2), pow(height,2))/Config.visualizer_colors.size();
+	const long scaledRadius = std::max(pow(width,2), pow(height,2))/pow(Config.visualizer_colors.size(),2);
 	for (size_t i = 0; i < samples; ++i)
 	{
 		long x = width + ((double) buf_left[i] * 2 * ((double)width / 65536.0));
 		long y = height + ((double) buf_right[i] * 2 * ((double)height / 65536.0));
 
-		w << toColor(pow(x - width, 2) + pow(y - ((long)height),2), scaledRadius)
+		w << toColor(pow((x - width)*1, 2) + pow((y - ((long)height)) * 2,2), scaledRadius)
 		<< NC::XY(x, y)
 		<< Config.visualizer_chars[1]
 		<< NC::Color::End;