andrew@0: /*
andrew@0:  *  DynamicVector.cpp
andrew@0:  *  midiCannamReader
andrew@0:  *
andrew@0:  *  Created by Andrew on 18/07/2011.
andrew@0:  *  Copyright 2011 QMUL. All rights reserved.
andrew@0:  *
andrew@0:  */
andrew@0: 
andrew@0: #include "DynamicVector.h"
andrew@0: 
andrew@0: DynamicVector::DynamicVector(){
andrew@0: 	length = 0;
andrew@0: 	arraySize = 0;
andrew@0: 	maximumValue = 0;
andrew@0: 	MAPestimate = 0;
andrew@0: 	offset = 0;
andrew@0: 	scalar = 1;
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::copyFromDynamicVector(const DynamicVector& dynamicVec){
andrew@0: 	if (dynamicVec.length == length){
andrew@0: 		for (int i = 0;i < length;i++)
andrew@0: 			array[i] = dynamicVec.array[i];
andrew@0: 	}
andrew@0: 	else{
andrew@0: 		printf("CANNOT COPY VECTORS OF NON SAME LENGTH!!\n");
andrew@0: 	}
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::createVector(int len){
andrew@0: 	array.clear();
andrew@0: 	for (int i = 0; i < len;i++){
andrew@0: 		array.push_back(0);
andrew@0: 	}
andrew@0: 	length = len;
andrew@0: 	arraySize = array.size();
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: double DynamicVector::getMaximum(){
andrew@0: 	int i;
andrew@0: 	double max = 0;
andrew@0: 	for (i=0;i < length;i++){	
andrew@0: 		if (array[i] > max){
andrew@0: 			max = array[i];
andrew@0: 			MAPestimate = i;
andrew@0: 		}
andrew@0: 	}
andrew@0: 	maximumValue = max;
andrew@0: 	return max;
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::zero(){
andrew@0: 	for (int i = 0;i < array.size();i++)
andrew@0: 		array[i] = 0;
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::renormalise(){
andrew@0: 	double tmpMax = getMaximum();
andrew@0: 	if (tmpMax > 0){
andrew@0: //	printf("renormalise : max is %f and size is %i\n", tmpMax, arraySize);		
andrew@0: 		for (int i = 0;i < array.size();i++)
andrew@0: 			array[i] /= tmpMax;
andrew@0: 
andrew@0: 	}
andrew@0: 	//printArray();
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::doProduct(DynamicVector& arrayOne, DynamicVector& arrayTwo){
andrew@0: 
andrew@0: 	for (int i = 0;i < arrayOne.length;i++)
andrew@0: 		array[i] = arrayOne.array[i] * arrayTwo.array[i];
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: void DynamicVector::printArray(){
andrew@0: 	for (int i = 0;i < arraySize;i++){
andrew@0: 		printf("[%i] = %f\n", i, array[i]);
andrew@0: 	}
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::translateDistribution(int translationIndex){
andrew@0: 	int tmpIndex;
andrew@0: 	DoubleVector tmpArray;
andrew@0: 	int i;
andrew@0: 
andrew@0: 	for (i=0;i < arraySize;i++){
andrew@0: 		tmpArray.push_back(array[i]);
andrew@0: 	}
andrew@0: 	//translate values
andrew@0: 	for (i=0;i < arraySize;i++){
andrew@0: 		tmpIndex = (i + translationIndex + arraySize)%arraySize;
andrew@0: 		array[tmpIndex] = tmpArray[i]; 
andrew@0: 	}
andrew@0: 	tmpArray.clear();
andrew@0: 	//now delete tmp array
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::addGaussianShape(double mean, double StdDev, double factor){
andrew@0: 	int i;
andrew@0: 	for (i=0;i<array.size();i++){
andrew@0: 		array[i] += factor*(1/(StdDev*sqrt(2*PI)))*exp(-1*(i-mean)*(i-mean)/(2*StdDev*StdDev));
andrew@0: 	}
andrew@0: 	//printf("ADDED GAUSSIAN SHAPE %i\n", (int)array.size());
andrew@0: }
andrew@0: 
andrew@0: void DynamicVector::addConstant(double value){
andrew@0: 	for (int i=0;i<array.size();i++){
andrew@0: 		array[i] += value;
andrew@0: 	}
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: void DynamicVector::addToIndex(int index, double constant){
andrew@0: 	array[index] += constant;
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: double DynamicVector::getIndexInRealTerms(const int& index){
andrew@0: 	if (index < arraySize)
andrew@0: 		return (offset + scalar*index);
andrew@0: 	else
andrew@0: 		return 0;
andrew@0: }
andrew@0: 
andrew@0: double DynamicVector::getRealTermsAsIndex(double value){
andrew@0: 	value -= offset;
andrew@0: 	value /= scalar;
andrew@0: 	
andrew@0: 	return value;
andrew@0: 	
andrew@0: }
andrew@0: 
andrew@1: double DynamicVector::getValueAtMillis(const double& millis){
andrew@1: 	
andrew@1: 	int index = round(getRealTermsAsIndex(millis));
andrew@1: 		if (index >= 0 && index < length)
andrew@1: 			return array[index];
andrew@1: 		else
andrew@1: 			return 0;
andrew@1: }
andrew@1: 
andrew@0: void DynamicVector::drawVector(const int& minIndex, const int& maxIndex){
andrew@0: 
andrew@0: 		
andrew@0: 		double stepSize = ofGetWidth() / (double)(maxIndex - minIndex);
andrew@0: 		double screenHeight = ofGetHeight();
andrew@0: 		double maxVal = getMaximum();
andrew@0: 		
andrew@0: 		for (int i = max(1,minIndex+1);i < min(maxIndex, (int)array.size());i++){
andrew@0: 		ofLine (stepSize*(i-1), screenHeight * (1 - array[i-1] / maxVal), stepSize*i, screenHeight * (1 - array[i] / maxVal) );
andrew@0: 		}
andrew@0: 	
andrew@0: }
andrew@0: 
andrew@0: 
andrew@0: void DynamicVector::drawConstrainedVector(const int& minIndex, const int& maxIndex, const int& minScreenIndex, const int& maxScreenIndex){
andrew@0: 	//constrain the height and width
andrew@0: 	
andrew@0: 	double stepSize = (maxScreenIndex - minScreenIndex) / (double)(maxIndex - minIndex);//step size in pixels per array bin 
andrew@0: 	double screenHeight = ofGetHeight();
andrew@0: 	double maxVal = getMaximum();
andrew@0: 
andrew@0: 	//OPTIMIZE!! XXX could just add stepsize each time
andrew@0: 	//not add minindex each time
andrew@0: 	int i = max(1,minIndex+1);
andrew@0: //	ofDrawBitmapString("i = "+ofToString(i)+"  :: screen min: "+ofToString(minScreenIndex + stepSize*(i-minIndex-1)), 20, 640);
andrew@0: 	
andrew@0: 	while ((minScreenIndex + stepSize*(i-minIndex)) < 0)
andrew@0: 		i++;//only draw what is on the screen
andrew@0: 	
andrew@0: 	for ( ; i < min(maxIndex+1, (int)array.size());i++){
andrew@0: 		ofLine (minScreenIndex + (stepSize*(i-minIndex-1)), screenHeight * (1 - array[i-1] / maxVal), 
andrew@0: 				minScreenIndex + (stepSize*(i-minIndex)),	 screenHeight * (1 - array[i] / maxVal) );
andrew@0: 		
andrew@0: 	}
andrew@0: 	
andrew@0: 	ofLine(minScreenIndex, screenHeight, minScreenIndex, screenHeight/2);
andrew@0: 	ofLine(maxScreenIndex, screenHeight, maxScreenIndex, screenHeight/2);
andrew@0: 	
andrew@0: //	ofDrawBitmapString(ofToString(stepSize, 2)+"  "+ofToString(maxScreenIndex - minScreenIndex, 0), 20, 600);
andrew@0: 
andrew@0: }