Exemplo n.º 1
0
    void drawDemo (Graphics& g) override
    {
        {
            RectangleList<float> verticalLines;
            verticalLines.ensureStorageAllocated (getWidth());

            float pos = offset.getValue();

            for (int x = 0; x < getWidth(); ++x)
            {
                float y = getHeight() * 0.3f;
                float length = y * std::abs (std::sin (x / 100.0f + 2.0f * pos));
                verticalLines.addWithoutMerging (Rectangle<float> ((float) x, y - length * 0.5f, 1.0f, length));
            }

            g.setColour (Colours::blue.withAlpha (getAlpha()));
            g.fillRectList (verticalLines);
        }

        {
            RectangleList<float> horizontalLines;
            horizontalLines.ensureStorageAllocated (getHeight());

            float pos = offset.getValue();

            for (int y = 0; y < getHeight(); ++y)
            {
                float x = getWidth() * 0.3f;
                float length = x * std::abs (std::sin (y / 100.0f + 2.0f * pos));
                horizontalLines.addWithoutMerging (Rectangle<float> (x - length * 0.5f, (float) y, length, 1.0f));
            }

            g.setColour (Colours::green.withAlpha (getAlpha()));
            g.fillRectList (horizontalLines);
        }

        g.setColour (Colours::red.withAlpha (getAlpha()));

        const float w = (float) getWidth();
        const float h = (float) getHeight();

        g.drawLine (positions[0].getValue() * w,
                    positions[1].getValue() * h,
                    positions[2].getValue() * w,
                    positions[3].getValue() * h);

        g.drawLine (positions[4].getValue() * w,
                    positions[5].getValue() * h,
                    positions[6].getValue() * w,
                    positions[7].getValue() * h);
    }
Exemplo n.º 2
0
    void drawChannel (Graphics& g, const Rectangle<int>& area,
                      const double startTime, const double endTime,
                      const int channelNum, const float verticalZoomFactor,
                      const double rate, const int numChans, const int sampsPerThumbSample,
                      LevelDataSource* levelData, const OwnedArray<ThumbData>& chans)
    {
        if (refillCache (area.getWidth(), startTime, endTime, rate,
                         numChans, sampsPerThumbSample, levelData, chans)
             && isPositiveAndBelow (channelNum, numChannelsCached))
        {
            const Rectangle<int> clip (g.getClipBounds().getIntersection (area.withWidth (jmin (numSamplesCached, area.getWidth()))));

            if (! clip.isEmpty())
            {
                const float topY = (float) area.getY();
                const float bottomY = (float) area.getBottom();
                const float midY = (topY + bottomY) * 0.5f;
                const float vscale = verticalZoomFactor * (bottomY - topY) / 256.0f;

                const MinMaxValue* cacheData = getData (channelNum, clip.getX() - area.getX());

                RectangleList<float> waveform;
                waveform.ensureStorageAllocated (clip.getWidth());

                float x = (float) clip.getX();

                for (int w = clip.getWidth(); --w >= 0;)
                {
                    if (cacheData->isNonZero())
                    {
                        const float top    = jmax (midY - cacheData->getMaxValue() * vscale - 0.3f, topY);
                        const float bottom = jmin (midY - cacheData->getMinValue() * vscale + 0.3f, bottomY);

                        waveform.addWithoutMerging (Rectangle<float> (x, top, 1.0f, bottom - top));
                    }

                    x += 1.0f;
                    ++cacheData;
                }

                g.fillRectList (waveform);
            }
        }
    }