Method PaintVuNotes

examples/LuminescentGrand/shared/Painter.cpp:165–231

}

void Painter::PaintVuNotes(uint32_t /*now_ms*/,
                           const KeyboardState& keyboard,
                           const int* led_column_table, int led_column_table_length,
                           LedRopeInterface* led_rope) {


 FL_WARN("\n\n############## VU NOTES ################\n\n");
 
 led_rope->RawBeginDraw();
                     
 for (int i = 0; i < led_column_table_length; ++i) {
    const Key& key = keyboard.mKeys[i];
    
    
    // Map the white keys to the bottom and the black keys to the top.
    bool black_key = false;
    switch (key.mIdx % 12) {
      case 1:
      case 4:
      case 6:
      case 9:
      case 11:
        black_key = true;
        break;
    }
    
    const int pixel_count = led_column_table[i];
    const int draw_pixel_count = fl::ceil(pixel_count * fl::sqrt(key.mCurrColor.v_));
    
    const int black_pixel_count = pixel_count - draw_pixel_count;
    const Color3i& c = *led_rope->GetIterator(i);
    

    const bool reverse_correct = black_key == (key.mIdx % 2);

    if (reverse_correct) {
      for (int j = 0; j < draw_pixel_count; ++j) {
        if (j < draw_pixel_count - 1) {
          led_rope->RawDrawPixel(c);
        } else {
          // Last pixel.
          ColorHSV hsv(random(512) / 512.f, random(512) / 512.f, 1.0);
          led_rope->RawDrawPixel(hsv.ToRGB());
        }
      }
      
      for (int j = 0; j < black_pixel_count; ++j) {
        led_rope->RawDrawPixel(Color3i::Black());
      }       
    } else {
      for (int j = 0; j < black_pixel_count; ++j) {
        led_rope->RawDrawPixel(Color3i::Black());
      } 
      
      for (int j = draw_pixel_count - 1; j >= 0; --j) {
        if (j < draw_pixel_count - 1) {
          led_rope->RawDrawPixel(c);
        } else {