コード例 #1
0
    void UpdateVisualsLines()
    {
        int numberOfTexturePixelsNeededUpdate = ShiftTextureUV();

        int waveFormIndexer = analyzer.waveFormResolution - analyzer.GetWaveFormBinsInLastUpdate();

        // Calculate the indexes in the texture that needs to be updated:
        int textureBeginIndex = TextureBeginIndex(numberOfTexturePixelsNeededUpdate);

        // draw the waveform
        float newPointL = 0;
        float newPointR = 0;
        int   numberOfTextureLinesDrawn = 0;
        int   i = textureBeginIndex;

        while (numberOfTextureLinesDrawn < numberOfTexturePixelsNeededUpdate)
        {
            int   savedIndexer = waveFormIndexer;
            float sumL         = GetSumWaveForm(waveFormToTexture, false, ref waveFormIndexer);
            waveFormIndexer = savedIndexer;
            float sumR       = GetSumWaveForm(waveFormToTexture, false, ref waveFormIndexer, Channels.right);
            int   numPixelsL = (int)(halfHeight * sumL);
            int   numPixelsR = (int)(halfHeight * sumR);
            // Reset the color to background color
            DrawLine(i, 0, height, true, backgroundColor);
            newPointL = halfHeight + numPixelsL;
            newPointR = halfHeight + numPixelsR;
            DrawLine(i - 1, prevPointL, newPointL, false, waveformColorL);
            DrawLine(i - 1, prevPointR, newPointR, false, waveformColorR);

            numberOfTextureLinesDrawn += 1;
            i          = (i + 1) % width;
            prevPointL = newPointL;
            prevPointR = newPointR;
        }

        texture.Apply();
    }