annotate src/DynamicVector.cpp @ 1:1a32ce016bb9

Changed bestEstimate timing to work via time sent from Max not the elapsed time. This had caused some problems, but this version now working surprisingly well on MIDI files with variable timing.

/*
 *  DynamicVector.cpp
 *  midiCannamReader
 *
 *  Created by Andrew on 18/07/2011.
 *  Copyright 2011 QMUL. All rights reserved.
 *
 */

#include "DynamicVector.h"

DynamicVector::DynamicVector(){
	length = 0;
	arraySize = 0;
	maximumValue = 0;
	MAPestimate = 0;
	offset = 0;
	scalar = 1;
}

void DynamicVector::copyFromDynamicVector(const DynamicVector& dynamicVec){
	if (dynamicVec.length == length){
		for (int i = 0;i < length;i++)
			array[i] = dynamicVec.array[i];
	}
	else{
		printf("CANNOT COPY VECTORS OF NON SAME LENGTH!!\n");
	}
}

void DynamicVector::createVector(int len){
	array.clear();
	for (int i = 0; i < len;i++){
		array.push_back(0);
	}
	length = len;
	arraySize = array.size();
}


double DynamicVector::getMaximum(){
	int i;
	double max = 0;
	for (i=0;i < length;i++){	
		if (array[i] > max){
			max = array[i];
			MAPestimate = i;
		}
	}
	maximumValue = max;
	return max;
}

void DynamicVector::zero(){
	for (int i = 0;i < array.size();i++)
		array[i] = 0;
}

void DynamicVector::renormalise(){
	double tmpMax = getMaximum();
	if (tmpMax > 0){
//	printf("renormalise : max is %f and size is %i\n", tmpMax, arraySize);		
		for (int i = 0;i < array.size();i++)
			array[i] /= tmpMax;

	}
	//printArray();
}

void DynamicVector::doProduct(DynamicVector& arrayOne, DynamicVector& arrayTwo){

	for (int i = 0;i < arrayOne.length;i++)
		array[i] = arrayOne.array[i] * arrayTwo.array[i];
}


void DynamicVector::printArray(){
	for (int i = 0;i < arraySize;i++){
		printf("[%i] = %f\n", i, array[i]);
	}
}

void DynamicVector::translateDistribution(int translationIndex){
	int tmpIndex;
	DoubleVector tmpArray;
	int i;

	for (i=0;i < arraySize;i++){
		tmpArray.push_back(array[i]);
	}
	//translate values
	for (i=0;i < arraySize;i++){
		tmpIndex = (i + translationIndex + arraySize)%arraySize;
		array[tmpIndex] = tmpArray[i]; 
	}
	tmpArray.clear();
	//now delete tmp array
}

void DynamicVector::addGaussianShape(double mean, double StdDev, double factor){
	int i;
	for (i=0;i<array.size();i++){
		array[i] += factor*(1/(StdDev*sqrt(2*PI)))*exp(-1*(i-mean)*(i-mean)/(2*StdDev*StdDev));
	}
	//printf("ADDED GAUSSIAN SHAPE %i\n", (int)array.size());
}

void DynamicVector::addConstant(double value){
	for (int i=0;i<array.size();i++){
		array[i] += value;
	}
}


void DynamicVector::addToIndex(int index, double constant){
	array[index] += constant;
}


double DynamicVector::getIndexInRealTerms(const int& index){
	if (index < arraySize)
		return (offset + scalar*index);
	else
		return 0;
}

double DynamicVector::getRealTermsAsIndex(double value){
	value -= offset;
	value /= scalar;
	
	return value;
	
}

double DynamicVector::getValueAtMillis(const double& millis){
	
	int index = round(getRealTermsAsIndex(millis));
		if (index >= 0 && index < length)
			return array[index];
		else
			return 0;
}

void DynamicVector::drawVector(const int& minIndex, const int& maxIndex){

		
		double stepSize = ofGetWidth() / (double)(maxIndex - minIndex);
		double screenHeight = ofGetHeight();
		double maxVal = getMaximum();
		
		for (int i = max(1,minIndex+1);i < min(maxIndex, (int)array.size());i++){
		ofLine (stepSize*(i-1), screenHeight * (1 - array[i-1] / maxVal), stepSize*i, screenHeight * (1 - array[i] / maxVal) );
		}
	
}


void DynamicVector::drawConstrainedVector(const int& minIndex, const int& maxIndex, const int& minScreenIndex, const int& maxScreenIndex){
	//constrain the height and width
	
	double stepSize = (maxScreenIndex - minScreenIndex) / (double)(maxIndex - minIndex);//step size in pixels per array bin 
	double screenHeight = ofGetHeight();
	double maxVal = getMaximum();

	//OPTIMIZE!! XXX could just add stepsize each time
	//not add minindex each time
	int i = max(1,minIndex+1);
//	ofDrawBitmapString("i = "+ofToString(i)+"  :: screen min: "+ofToString(minScreenIndex + stepSize*(i-minIndex-1)), 20, 640);
	
	while ((minScreenIndex + stepSize*(i-minIndex)) < 0)
		i++;//only draw what is on the screen
	
	for ( ; i < min(maxIndex+1, (int)array.size());i++){
		ofLine (minScreenIndex + (stepSize*(i-minIndex-1)), screenHeight * (1 - array[i-1] / maxVal), 
				minScreenIndex + (stepSize*(i-minIndex)),	 screenHeight * (1 - array[i] / maxVal) );
		
	}
	
	ofLine(minScreenIndex, screenHeight, minScreenIndex, screenHeight/2);
	ofLine(maxScreenIndex, screenHeight, maxScreenIndex, screenHeight/2);
	
//	ofDrawBitmapString(ofToString(stepSize, 2)+"  "+ofToString(maxScreenIndex - minScreenIndex, 0), 20, 600);

}