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107 lines
2.7 KiB
107 lines
2.7 KiB
#include <kdebug.h>
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#include "vector.h"
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// this and vector.h by Ryan Cummings
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// Creates a vector with between two points
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Vector::Vector(const TQPoint &source, const TQPoint &dest) {
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_magnitude = sqrt(pow(source.x() - dest.x(), 2) + pow(source.y() - dest.y(), 2));
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_direction = atan2(source.y() - dest.y(), source.x() - dest.x());
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}
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// Creates a vector with between two points
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Vector::Vector(const Point &source, const Point &dest) {
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_magnitude = sqrt(pow(source.x - dest.x, 2) + pow(source.y - dest.y, 2));
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_direction = atan2(source.y - dest.y, source.x - dest.x);
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}
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// Creates an empty Vector
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Vector::Vector() {
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_magnitude = 0.0;
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_direction = 0.0;
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}
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// Copy another Vector object
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Vector::Vector(const Vector& v) {
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_magnitude = v._magnitude;
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_direction = v._direction;
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}
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// Set the X component
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void Vector::setComponentX(double x) {
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setComponents(x, componentY());
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}
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// Set the Y component
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void Vector::setComponentY(double y) {
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setComponents(componentX(), y);
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}
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// Operations with another Vector performs vector math
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Vector Vector::operator+(const Vector& v) {
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double x = componentX() + v.componentX();
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double y = componentY() + v.componentY();
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return Vector(sqrt((x * x) + (y * y)), atan2(y, x));
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}
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Vector Vector::operator-(const Vector& v) {
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double x = componentX() - v.componentX();
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double y = componentY() - v.componentY();
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return Vector(sqrt((x * x) + (y * y)), atan2(y, x));
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}
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Vector& Vector::operator+=(const Vector& v) {
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setComponents(componentX() + v.componentX(), componentY() + v.componentY());
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return *this;
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}
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Vector& Vector::operator-=(const Vector& v) {
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setComponents(componentX() - v.componentX(), componentY() - v.componentY());
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return *this;
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}
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double Vector::operator*(const Vector& v) {
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return ((componentX() * v.componentX()) + (componentY() * v.componentY()));
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}
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// Operations with a single double value affects the magnitude
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Vector& Vector::operator+= (double m) {
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_magnitude += m;
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return *this;
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}
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Vector& Vector::operator-= (double m) {
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_magnitude -= m;
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return *this;
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}
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Vector& Vector::operator*= (double m) {
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_magnitude *= m;
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return *this;
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}
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Vector& Vector::operator/= (double m) {
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_magnitude /= m;
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return *this;
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}
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// Sets both components at once (the only way to do it efficiently)
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void Vector::setComponents(double x, double y) {
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_direction = atan2(y, x);
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_magnitude = sqrt((x * x) + (y * y));
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}
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void debugPoint(const TQString &text, const Point &p)
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{
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kdDebug(12007) << text << " (" << p.x << ", " << p.y << ")" << endl;
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}
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void debugVector(const TQString &text, const Vector &p)
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{
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// debug degrees
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kdDebug(12007) << text << " (magnitude: " << p.magnitude() << ", direction: " << p.direction() << ", direction (deg): " << (360L / (2L * M_PI)) * p.direction() << ")" << endl;
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}
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