import com.github.mikephil.charting.data.LineDataSet; //导入方法依赖的package包/类

protected void drawCircles(Canvas c) {

mRenderPaint.setStyle(Paint.Style.FILL);

float phaseX = mAnimator.getPhaseX();

float phaseY = mAnimator.getPhaseY();

List dataSets = mChart.getLineData().getDataSets();

for (int i = 0; i < dataSets.size(); i++) {

LineDataSet dataSet = dataSets.get(i);

if (!dataSet.isVisible() || !dataSet.isDrawCirclesEnabled())

continue;

mCirclePaintInner.setColor(dataSet.getCircleHoleColor());

Transformer trans = mChart.getTransformer(dataSet.getAxisDependency());

List entries = dataSet.getYVals();

Entry entryFrom = dataSet.getEntryForXIndex((mMinX < 0) ? 0 : mMinX);

Entry entryTo = dataSet.getEntryForXIndex(mMaxX);

int minx = Math.max(dataSet.getEntryPosition(entryFrom), 0);

int maxx = Math.min(dataSet.getEntryPosition(entryTo) + 1, entries.size());

CircleBuffer buffer = mCircleBuffers[i];

buffer.setPhases(phaseX, phaseY);

buffer.limitFrom(minx);

buffer.limitTo(maxx);

buffer.feed(entries);

trans.pointValuesToPixel(buffer.buffer);

float halfsize = dataSet.getCircleSize() / 2f;

for (int j = 0, count = (int) Math.ceil((maxx - minx) * phaseX + minx) * 2; j < count; j += 2) {

float x = buffer.buffer[j];

float y = buffer.buffer[j + 1];

if (!mViewPortHandler.isInBoundsRight(x))

break;

// make sure the circles don't do shitty things outside

// bounds

if (!mViewPortHandler.isInBoundsLeft(x) || !mViewPortHandler.isInBoundsY(y))

continue;

int circleColor = dataSet.getCircleColor(j / 2 + minx);

mRenderPaint.setColor(circleColor);

c.drawCircle(x, y, dataSet.getCircleSize(),

mRenderPaint);

if (dataSet.isDrawCircleHoleEnabled()

&& circleColor != mCirclePaintInner.getColor())

c.drawCircle(x, y,

halfsize,

mCirclePaintInner);

}

}

}