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74 lines
1.8 KiB
74 lines
1.8 KiB
15 years ago
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#include "Lorenz.hpp"
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Lorenz::Lorenz() {
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init();
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}
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void Lorenz::init() {
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// allocation
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myParameters = new double[4];
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vectorNew = new double[3];
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vectorOld = new double[3];
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// initialisation
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assert(myParameters != NULL);
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assert(vectorNew != NULL);
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assert(vectorOld != NULL);
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for ( unsigned int i = 0; i < 4; i++ ) {
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myParameters[i] = 0.0;
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}
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for ( unsigned int i = 0; i < 3; i++ ) {
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vectorNew[i] = vectorOld[i] = 1.0;
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}
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}
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// the main function
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void Lorenz::iterate() {
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swap(vectorNew, vectorOld);
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vectorNew[0] = vectorOld[0] + myParameters[0] * myParameters[1] * (vectorOld[1] - vectorOld[0]);
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vectorNew[1] = vectorOld[1] + myParameters[0] * (vectorOld[0] * (myParameters[2] - vectorOld[2]) - vectorOld[1]);
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vectorNew[2] = vectorOld[2] + myParameters[0] * (vectorOld[0] * vectorOld[1] - myParameters[3] * vectorOld[2]);
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}
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/*
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4D:
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new_point[0] = point[0] + param[0] * param[1] * (point[1] - point[0]);
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new_point[1] = point[1] + param[0] * (point[0] * (param[2] - point[2]) - point[1] + point[3]);
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new_point[2] = point[2] + param[0] * (point[0] * point[1] - param[3] * point[2]);
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new_point[3] = point[3] - param[0] * param[4] * point[0];
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break;
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*/
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// setters, getters, all i/o to other classes/objects
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void * Lorenz::getProperty(const string identifier) {
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if ( identifier == "dimension" ) {
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unsigned int * _return = new unsigned int;
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*_return = 3;
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return _return;
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}
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return NULL;
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}
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void Lorenz::setProperty(const string identifier, const void * value) {
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return;
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}
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double * & Lorenz::parameters() {
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return myParameters;
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}
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double & Lorenz::parameter(const unsigned int index) {
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return myParameters[index];
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}
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double * & Lorenz::vector() {
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return vectorNew;
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}
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double * & Lorenz::previousVector() {
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return vectorOld;
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}
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