85 lines
1.5 KiB
C
Executable File
85 lines
1.5 KiB
C
Executable File
/*
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* Vector.h
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*
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* Created on: 03.08.2012
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* Author: Felix
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*/
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#ifndef VECTOR_H_
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#define VECTOR_H_
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#include <math.h>
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#include <SFML/System.hpp>
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#include <Box2D/Box2D.h>
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#include <Thor/Vectors.hpp>
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/**
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* 2D floating point vector with x/y members.
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*/
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typedef sf::Vector2f Vector2f;
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/**
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* 2D integer vector with x/y members.
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*/
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typedef sf::Vector2i Vector2i;
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/**
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* Constant for conversion between Box2D vectors and SFML vectors.
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*/
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static const int PIXELS_PER_METER = 25;
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/**
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* Converts a distance from pixels to meters.
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*/
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inline float
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pixelToMeter(float in) {
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return in / PIXELS_PER_METER;
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}
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/**
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* Converts a distance from meters to pixels.
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*/
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inline float
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meterToPixel(float in) {
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return in * PIXELS_PER_METER;
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}
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/**
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* Converts Box2D metric vector to SFML pixel vector.
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*/
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inline Vector2f
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vector(const b2Vec2& in) {
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return Vector2f(meterToPixel(in.x), meterToPixel(in.y));
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}
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/**
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* Converts SFML pixel vector to Box2D metric vector.
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*/
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inline b2Vec2
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vector(const Vector2f& in) {
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return b2Vec2(pixelToMeter(in.x), pixelToMeter(in.y));
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}
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/**
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* Converts a vector to an SFML angle with the same direction.
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*/
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inline float
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angle(Vector2f in) {
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return 180 - thor::toDegree(atan2(in.x, in.y));
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}
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/**
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* Converts an SFML angle to a unit vector with the same direction.
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*/
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inline Vector2f
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angle(float in) {
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in = thor::toRadian(180 - in);
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return Vector2f(sin(in), cos(in));
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}
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#endif /* VECTOR_H_ */
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