// Recursive function to write each bit in proper order
void writePattern(HCNode * node, BitOutputStream& out)
{
if(node->p != NULL)
{
writePattern(node->p, out);
out.writeBit(node->isChild1);
}
return;
}
//show 1 pattern
void SegDisp::showPattern(int digit, int pattern[7], int ms, bool dot){
if (ms < 0){
Error(12);
}
else if (digit > 3 || digit < 0){
Error(13);
}
/*
if we need to include the dot, do so
Otherwise, just show the pattern
*/
writePattern(pattern,dot);
digitOn(digit);
delay(ms);
digitOff(digit);
digitalWrite(pins[7],LOW); //this is the dot
}
//clear everything
void SegDisp::clear(){
/*
clear all of the pins
*/
writePattern(numbers[sd_EMPTY],false);
/*
turn off the colon
*/
colonOff();
/*
turn off the dot
*/
digitalWrite(pins[7],LOW);
/*
disconnect ground
*/
for (int x=0; x<4; x++){
digitOff(x);
}
}
//make dot optional
void SegDisp::writePattern(int pattern[7]){
writePattern(pattern[7], false);
}
/** Write to the given BitOutputStream
* the sequence of bits coding the given symbol.
* PRECONDITION: build() has been called, to create the coding
* tree, and initialize root pointer and leaves vector.
*/
void HCTree::encode(byte symbol, BitOutputStream& out) const
{
HCNode * node = leaves[(int) symbol];
writePattern(node, out);
}
