| 18 | static float _currentFPS; |
| 19 | |
| 20 | static float measureFPS() |
| 21 | { |
| 22 | _currentFrameCount++; |
| 23 | |
| 24 | auto currentTime = Clock_t::now(); |
| 25 | auto elapsed = std::chrono::duration_cast<std::chrono::milliseconds>(currentTime - _referenceTime).count() / 1000.0; |
| 26 | |
| 27 | if (elapsed > 1.0) |
| 28 | { |
| 29 | _currentFPS = _currentFrameCount / elapsed; |
| 30 | _currentFrameCount = 0; |
| 31 | _referenceTime = currentTime; |
| 32 | } |
| 33 | |
| 34 | return _currentFPS; |
| 35 | } |
| 36 | |
| 37 | void drawFPS(DrawingContext& drawingCtx) |
| 38 | { |