public CurveChartRender(
ICurveData curveData, IXAxisData xAxisData, IYAxisData yAxisData, float offset) {
super();
this.curveData = curveData;
this.xAxisData = xAxisData;
this.yAxisData = yAxisData;
this.offset = offset;
cubicPaint.setStyle(Paint.Style.STROKE);
cubicPaint.setAntiAlias(true);
outpointPaint.setStyle(Paint.Style.FILL);
outpointPaint.setAntiAlias(true);
inPointPaint.setStyle(Paint.Style.FILL);
inPointPaint.setAntiAlias(true);
cubicPaint.setStrokeWidth(curveData.getPaintWidth());
outpointPaint.setStrokeWidth(cubicPaint.getStrokeWidth());
inPointPaint.setStrokeWidth(cubicPaint.getStrokeWidth());
intensity = curveData.getIntensity();
}
@Override
public void drawGraph(Canvas canvas, float animatedValue) {
float prevDx = 0f;
float prevDy = 0f;
float curDx = 0f;
float curDy = 0f;
PointF prevPrev = curveData.getValue().get(0);
PointF prev = prevPrev;
PointF cur = prev;
PointF next = curveData.getValue().get(1);
pointList.clear();
cubicPath.moveTo(
(cur.x - xAxisData.getMinimum()) * xAxisData.getAxisScale(),
-(cur.y - yAxisData.getMinimum()) * yAxisData.getAxisScale() * animatedValue);
/** 保存 */
pointList.add(
new PointF(
(cur.x - xAxisData.getMinimum()) * xAxisData.getAxisScale(),
-(cur.y - yAxisData.getMinimum()) * yAxisData.getAxisScale() * animatedValue));
for (int j = 1; j < curveData.getValue().size(); j++) {
prevPrev = curveData.getValue().get(j == 1 ? 0 : j - 2);
prev = curveData.getValue().get(j - 1);
cur = curveData.getValue().get(j);
next = curveData.getValue().size() > j + 1 ? curveData.getValue().get(j + 1) : cur;
prevDx = (cur.x - prevPrev.x) * intensity * xAxisData.getAxisScale();
prevDy = (cur.y - prevPrev.y) * intensity * yAxisData.getAxisScale();
curDx = (next.x - prev.x) * intensity * xAxisData.getAxisScale();
curDy = (next.y - prev.y) * intensity * yAxisData.getAxisScale();
cubicPath.cubicTo(
(prev.x - xAxisData.getMinimum()) * xAxisData.getAxisScale() + prevDx,
-(((prev.y - yAxisData.getMinimum()) * yAxisData.getAxisScale() + prevDy)
* animatedValue),
((cur.x - xAxisData.getMinimum()) * xAxisData.getAxisScale() - curDx),
-(((cur.y - yAxisData.getMinimum()) * yAxisData.getAxisScale() - curDy) * animatedValue),
((cur.x - xAxisData.getMinimum()) * xAxisData.getAxisScale()),
-(((cur.y - yAxisData.getMinimum()) * yAxisData.getAxisScale()) * animatedValue));
/** 保存 */
pointList.add(
new PointF(
(cur.x - xAxisData.getMinimum()) * xAxisData.getAxisScale(),
-((cur.y - yAxisData.getMinimum()) * yAxisData.getAxisScale()) * animatedValue));
}
canvas.save();
canvas.translate(offset, 0);
cubicPaint.setColor(curveData.getColor());
canvas.drawPath(cubicPath, cubicPaint);
cubicFillPath.addPath(cubicPath);
cubicPath.rewind();
/** 填充曲线图 */
if (curveData.getDrawable() != null) {
// 填充颜色
cubicFillPath.lineTo(
(curveData.getValue().get(curveData.getValue().size() - 1).x - xAxisData.getMinimum())
* xAxisData.getAxisScale(),
0);
cubicFillPath.lineTo(
(curveData.getValue().get(0).x - xAxisData.getMinimum()) * xAxisData.getAxisScale(), 0);
cubicFillPath.close();
canvas.save();
canvas.clipPath(cubicFillPath);
curveData
.getDrawable()
.setBounds(
-canvas.getWidth() + (int) xAxisData.getAxisLength(),
-(int) yAxisData.getAxisLength(),
(int) xAxisData.getAxisLength(),
canvas.getHeight() - (int) yAxisData.getAxisLength());
curveData.getDrawable().draw(canvas);
canvas.restore();
cubicFillPath.rewind();
}
/** 点绘制 */
outpointPaint.setColor(curveData.getColor());
inPointPaint.setColor(Color.WHITE);
((IPointData) curveData).setInPaint(inPointPaint);
((IPointData) curveData).setOutPaint(outpointPaint);
if (((IPointData) curveData).getInRadius() == IPointData.NOSETING)
((IPointData) curveData).setInRadius(xAxisData.getAxisLength() / 100);
if (((IPointData) curveData).getOutRadius() == IPointData.NOSETING)
((IPointData) curveData).setOutRadius(xAxisData.getAxisLength() / 70);
for (int j = 0; j < pointList.size(); j++) {
mPointRender.drawCirclePoint(
canvas,
pointList.get(j),
curveData.getValue().get(j),
(IPointData) curveData,
curveData.getTextSize(),
curveData.getIsTextSize(),
yAxisData.getDecimalPlaces());
}
canvas.restore();
}