/**
* Convert {@link ChartEntry} values into screen points.
*/
private void digestData() {
int nEntries = data.get(0).size();
for(ChartSet set: data){
for(int i = 0; i < nEntries; i++){
set.getEntry(i)
.setCoordinates(horController.parsePos(i, set.getValue(i)),
verController.parsePos(i, set.getValue(i)));
}
}
}
/**
* Notify {@link ChartView} about updated values. {@link ChartView} will be validated.
*/
public void notifyDataUpdate(){
ArrayList<float[][]> oldCoords = new ArrayList<>(data.size());
ArrayList<float[][]> newCoords = new ArrayList<>(data.size());
for(ChartSet set : data)
oldCoords.add(set.getScreenPoints());
digestData();
for(ChartSet set : data)
newCoords.add(set.getScreenPoints());
mRegions = defineRegions(data);
if(mAnim != null)
data = mAnim.prepareUpdateAnimation(this, oldCoords, newCoords);
invalidate();
}
/**
* Set new data to the chart and invalidates the view to be then drawn.
*
* @param set {@link ChartSet} object.
*/
public void addData(ChartSet set){
if(!data.isEmpty() && set.size() != data.get(0).size())
Log.e(TAG, "The number of entries between sets doesn't match.",
new IllegalArgumentException());
if(set == null)
Log.e(TAG, "Chart data set can't be null",
new IllegalArgumentException());
data.add(set);
}
/**
* Show chart data
*/
public void show(){
for(ChartSet set : data)
set.setVisible(true);
display();
}