andrew@28: /*
andrew@28:  *  DynamicVector.cpp
andrew@28:  *  midiCannamReader
andrew@28:  *
andrew@28:  *  Created by Andrew on 18/07/2011.
andrew@28:  *  Copyright 2011 QMUL. All rights reserved.
andrew@28:  *
andrew@28:  */
andrew@28: 
andrew@28: 
andrew@28: #include "DynamicVector.h"
andrew@28: 
andrew@28: DynamicVector::DynamicVector(){
andrew@28: 	length = 0;
andrew@28: 	arraySize = 0;
andrew@28: 	maximumValue = 0;
andrew@28: 	MAPestimate = 0;
andrew@28: 	offset = 0;
andrew@28: 	scalar = 1;
andrew@28: 	integratedEstimate = length/2;
andrew@28: 	
andrew@28: 	gaussianLookupMean = (double) GAUSSIAN_LOOKUP_LENGTH/2;
andrew@28: 	gaussianLookupStdDev = (double)(GAUSSIAN_LOOKUP_LENGTH/16);
andrew@28: 	double factor = 1.0;//(1.0 / (gaussianLookupStdDev*sqrt(2*PI)) );//1.0;//-1.0/(2*PI*sqrt(gaussianLookupStdDev));
andrew@28: 	for (int i = 0;i < GAUSSIAN_LOOKUP_LENGTH;i++){
andrew@28: 	gaussianLookupTable[i] = factor*exp(-1.0*(i-gaussianLookupMean)*(i-gaussianLookupMean)/(2.0*gaussianLookupStdDev*gaussianLookupStdDev));
andrew@28: 	}
andrew@28: 	
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::copyFromDynamicVector(const DynamicVector& dynamicVec){
andrew@28: 	if (dynamicVec.length == length){
andrew@28: 		for (int i = 0;i < length;i++)
andrew@28: 			array[i] = dynamicVec.array[i];
andrew@28: 	}
andrew@28: 	else{
andrew@28: 		printf("CANNOT COPY VECTORS OF NON SAME LENGTH!!\n");
andrew@28: 	}
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::createVector(int len){
andrew@28: 	array.clear();
andrew@28: 	for (int i = 0; i < len;i++){
andrew@28: 		array.push_back(0);
andrew@28: 	}
andrew@28: 	length = len;
andrew@28: 	arraySize = array.size();
andrew@28: 	integratedEstimate = length/2;
andrew@28: }
andrew@28: 
andrew@28: 
andrew@28: double DynamicVector::getMaximum(){
andrew@28: 	int i;
andrew@28: 	double max = 0;
andrew@28: 	for (i=0;i < length;i++){	
andrew@28: 		if (array[i] > max){
andrew@28: 			max = array[i];
andrew@28: 			MAPestimate = i;
andrew@28: 		}
andrew@28: 	}
andrew@28: 	maximumValue = max;
andrew@28: 	return max;
andrew@28: }
andrew@28: 
andrew@28: double DynamicVector::getIntegratedEstimate(){
andrew@28: 	//returns the index of the integrated average - where the probability distribution is centred
andrew@28: 	integratedEstimate = 0;
andrew@28: 	double integratedTotal = 0;
andrew@28: 	for (int i = 0;i < length;i++){
andrew@28: 		integratedEstimate += array[i]*i;
andrew@28: 		integratedTotal += array[i];
andrew@28: 	}
andrew@28: 	if (integratedTotal > 0){
andrew@28: 		integratedEstimate /= integratedTotal;
andrew@28: 	}
andrew@28: 	return integratedEstimate;
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::updateIntegratedEstimate(){
andrew@28: 	//returns the index of the integrated average - where the probability distribution is centred
andrew@28: 	integratedEstimate = 0;
andrew@28: 	double integratedTotal = 0;
andrew@28: 	for (int i = 0;i < length;i++){
andrew@28: 		integratedEstimate += array[i]*i;
andrew@28: 		integratedTotal += array[i];
andrew@28: 	}
andrew@28: 	if (integratedTotal > 0){
andrew@28: 		integratedEstimate /= integratedTotal;
andrew@28: 	}
andrew@28: 
andrew@28: }
andrew@28: 
andrew@31: void DynamicVector::updateLimitedIntegratedEstimate(){
andrew@31: 	//returns the index of the integrated average - where the probability distribution is centred
andrew@31: 	//but limited round the MAP estimate
andrew@31: 	double tmp = getMaximum();
andrew@31: 	int limit = min(MAPestimate, length - MAPestimate);
andrew@31: 	int start = max(0, MAPestimate - limit);
andrew@31: 	int end = min(MAPestimate + limit, length-1);
andrew@31: 	
andrew@31: 	integratedEstimate = 0;
andrew@31: 	double integratedTotal = 0;
andrew@31: 	for (int i = start;i <= end;i++){
andrew@31: 		integratedEstimate += array[i]*i;
andrew@31: 		integratedTotal += array[i];
andrew@31: 	}
andrew@31: 	if (integratedTotal > 0){
andrew@31: 		integratedEstimate /= integratedTotal;
andrew@31: 	}
andrew@31: 	
andrew@31: }
andrew@31: 
andrew@28: 
andrew@28: void DynamicVector::zero(){
andrew@28: 	for (int i = 0;i < array.size();i++)
andrew@28: 		array[i] = 0;
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::renormalise(){
andrew@28: 	double tmpMax = getMaximum();
andrew@28: 	if (tmpMax > 0){
andrew@28: //	printf("renormalise : max is %f and size is %i\n", tmpMax, arraySize);		
andrew@28: 		for (int i = 0;i < array.size();i++)
andrew@28: 			array[i] /= tmpMax;
andrew@28: 
andrew@28: 	}
andrew@28: 	//printArray();
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::doProduct(DynamicVector& arrayOne, DynamicVector& arrayTwo){
andrew@28: 
andrew@28: 	for (int i = 0;i < arrayOne.length;i++)
andrew@28: 		array[i] = arrayOne.array[i] * arrayTwo.array[i];
andrew@28: }
andrew@28: 
andrew@28: 
andrew@28: void DynamicVector::printArray(){
andrew@28: 	for (int i = 0;i < arraySize;i++){
andrew@28: 		printf("[%i] = %f\n", i, array[i]);
andrew@28: 	}
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::translateDistribution(int translationIndex){
andrew@28: 	int tmpIndex;
andrew@28: 	DoubleVector tmpArray;
andrew@28: 	int i;
andrew@28: 
andrew@28: 	for (i=0;i < arraySize;i++){
andrew@28: 		tmpArray.push_back(array[i]);
andrew@28: 	}
andrew@28: 	//translate values
andrew@28: 	for (i=0;i < arraySize;i++){
andrew@28: 		tmpIndex = (i + translationIndex + arraySize)%arraySize;
andrew@28: 		array[tmpIndex] = tmpArray[i]; 
andrew@28: 	}
andrew@28: 	tmpArray.clear();
andrew@28: 	//now delete tmp array
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::addGaussianShape(const double& mean, const double& StdDev, double factor){
andrew@28: 	
andrew@28: 	int i;
andrew@28: 	double std_dev_factor = (2*StdDev*StdDev);
andrew@28: 	factor *= (1/(StdDev*sqrt(2*PI)));
andrew@28: 	int maxVal = min((int) array.size(), (int)(mean + 4.8*StdDev));
andrew@28: 	int minVal = max(0, (int)(mean - 4.8*StdDev));
andrew@28: 	
andrew@28: 	for (i=minVal;i < maxVal;i++){
andrew@28: 		array[i] += factor*exp(-1*(i-mean)*(i-mean)/(std_dev_factor));
andrew@28: 	}
andrew@28: 	
andrew@28: //	addGaussianShapeByLookupTable(mean, StdDev, factor);
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::addGaussianShapeByLookupTable(double& mean, double& StdDev, double factor){
andrew@28: 	int i;
andrew@28: 	int lookupIndex ;
andrew@28: 	factor *= (1/(StdDev*sqrt(2*PI)));
andrew@28: 	for (i=0;i<array.size()-1;i++){
andrew@28: 		lookupIndex = round(getLookupIndex(i, mean, StdDev));
andrew@28: 		array[i] += factor*gaussianLookupTable[lookupIndex];
andrew@28: 	}
andrew@28: 	//printf("ADDED GAUSSIAN SHAPE %i\n", (int)array.size());
andrew@28: }
andrew@28: 
andrew@28: double DynamicVector::getLookupIndex(const int& i, const double& mean, const double& StdDev){
andrew@28: 	
andrew@28: 	double Z = ((double)i - mean)/StdDev;
andrew@28: 	double lookupIndex = Z*gaussianLookupStdDev + gaussianLookupMean;
andrew@28: 	
andrew@28: 	if (lookupIndex < 0)
andrew@28: 		lookupIndex = 0;
andrew@28: 	
andrew@28: 	if (lookupIndex >= GAUSSIAN_LOOKUP_LENGTH)
andrew@28: 		lookupIndex = GAUSSIAN_LOOKUP_LENGTH-1;
andrew@28: 	
andrew@28: //	(i - mean)*(i-mean)*(GAUSSIAN_LOOKUP_LENGTH*GAUSSIAN_LOOKUP_LENGTH/16.0)/(StdDev*StdDev);
andrew@28: 	return lookupIndex;
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::addTriangularShape(double mean, double width, double factor){
andrew@28: 	int i;
andrew@28: 
andrew@28: 	for (i= max(0., (double)(mean - width));i < min((mean+width), (double)array.size());i++){
andrew@28: 		array[i] += factor * abs(i - mean) / mean;		
andrew@28: 	}
andrew@28: 
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::addConstant(const double& value){
andrew@28: 	for (int i=0;i<array.size();i++){
andrew@28: 		array[i] += value;
andrew@28: 	}
andrew@28: }
andrew@28: 
andrew@28: 
andrew@28: void DynamicVector::addToIndex(const int& index, const double& constant){
andrew@28: 	array[index] += constant;
andrew@28: }
andrew@28: 
andrew@28: 
andrew@28: double DynamicVector::getIndexInRealTerms(const int& index){
andrew@28: 	if (index < arraySize)
andrew@28: 		return (offset + scalar*index);
andrew@28: 	else
andrew@28: 		return 0;
andrew@28: }
andrew@28: 
andrew@28: double DynamicVector::getRealTermsAsIndex(double value){
andrew@28: 	value -= offset;
andrew@28: 	value /= scalar;
andrew@28: 	
andrew@28: 	return value;
andrew@28: 	
andrew@28: }
andrew@28: 
andrew@28: double DynamicVector::getValueAtMillis(const double& millis){
andrew@28: 	
andrew@28: 	int index = round(getRealTermsAsIndex(millis));
andrew@28: 		if (index >= 0 && index < length)
andrew@28: 			return array[index];
andrew@28: 		else
andrew@28: 			return 0;
andrew@28: }
andrew@28: 
andrew@28: void DynamicVector::drawVector(const int& minIndex, const int& maxIndex){
andrew@28: 
andrew@28: 		
andrew@28: 		double stepSize = ofGetWidth() / (double)(maxIndex - minIndex);
andrew@28: 		double screenHeight = (double) ofGetHeight();
andrew@28: 		double maxVal = getMaximum();
andrew@28: 	
andrew@28: 		int startInt = max(1,minIndex+1);
andrew@28: 		int endInt = min(maxIndex, (int)array.size());
andrew@28: 		double heightConstant = screenHeight / maxVal;
andrew@28: 		int lastHeightPixel = heightConstant * (maxVal - array[startInt-1]);
andrew@28: 		int newHeightPixel;
andrew@28: 		for (int i = startInt;i < endInt;i++){
andrew@28: 			newHeightPixel = (int) heightConstant * (maxVal - array[i]);
andrew@28: 			ofLine (stepSize*(i-1), lastHeightPixel, stepSize*i, newHeightPixel);
andrew@28: 			lastHeightPixel = newHeightPixel;
andrew@28: 		}
andrew@28: 	
andrew@28: }
andrew@28: 
andrew@28: 
andrew@28: void DynamicVector::drawConstrainedVector(const int& minIndex, const int& maxIndex, const int& minScreenIndex, const int& maxScreenIndex){
andrew@28: 	//constrain the height and width
andrew@28: 	
andrew@28: 	double stepSize = (maxScreenIndex - minScreenIndex) / (double)(maxIndex - minIndex);//step size in pixels per array bin 
andrew@28: 	double screenHeight = ofGetHeight();
andrew@28: 	double maxVal = getMaximum();
andrew@28: 
andrew@28: 	//OPTIMIZE!! XXX could just add stepsize each time
andrew@28: 	//not add minindex each time
andrew@28: 	int i = max(1,minIndex+1);
andrew@28: //	ofDrawBitmapString("i = "+ofToString(i)+"  :: screen min: "+ofToString(minScreenIndex + stepSize*(i-minIndex-1)), 20, 640);
andrew@28: 	
andrew@28: 	while ((minScreenIndex + stepSize*(i-minIndex)) < 0)
andrew@28: 		i++;//only draw what is on the screen
andrew@28: 	
andrew@28: 	for ( ; i < min(maxIndex+1, (int)array.size());i++){
andrew@28: 		ofLine (minScreenIndex + (stepSize*(i-minIndex-1)), screenHeight * (1 - array[i-1] / maxVal), 
andrew@28: 				minScreenIndex + (stepSize*(i-minIndex)),	 screenHeight * (1 - array[i] / maxVal) );
andrew@28: 		
andrew@28: 	}
andrew@28: 	
andrew@28: 	ofLine(minScreenIndex, screenHeight, minScreenIndex, screenHeight/2);
andrew@28: 	ofLine(maxScreenIndex, screenHeight, maxScreenIndex, screenHeight/2);
andrew@28: 	
andrew@28: //	ofDrawBitmapString(ofToString(stepSize, 2)+"  "+ofToString(maxScreenIndex - minScreenIndex, 0), 20, 600);
andrew@28: 
andrew@28: }