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#ifndef __CGLA_VEC4F_H__
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#define __CGLA_VEC4F_H__
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#include "Vec3f.h"
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#include "ArithVec4Float.h"
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namespace CGLA {
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/** \brief A four dimensional floating point vector.
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This class is also used (via typedef) for
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homogeneous vectors.
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*/
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class Vec4f: public ArithVec4Float<float,Vec4f>
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{
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public:
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/// Construct a (0,0,0,0) homogenous Vector
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Vec4f(): ArithVec4Float<float,Vec4f>(0,0,0,0.0) {}
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/// Construct a (0,0,0,0) homogenous Vector
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explicit Vec4f(float _a): ArithVec4Float<float,Vec4f>(_a,_a,_a,_a) {}
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/// Construct a 4D vector
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Vec4f(float _a, float _b, float _c, float _d):
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ArithVec4Float<float,Vec4f>(_a,_b,_c,_d) {}
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/// Construct a homogenous vector (a,b,c,1)
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Vec4f(float _a, float _b, float _c):
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ArithVec4Float<float,Vec4f>(_a,_b,_c,1.0) {}
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/// Construct a homogenous vector from a non-homogenous.
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explicit Vec4f(const Vec3f& v):
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ArithVec4Float<float,Vec4f>(v[0],v[1],v[2],1.0) {}
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/// Construct a homogenous vector from a non-homogenous.
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explicit Vec4f(const Vec3f& v,float _d):
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ArithVec4Float<float,Vec4f>(v[0],v[1],v[2],_d) {}
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operator Vec3f() const
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{
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float k = 1.0f/(*this)[3];
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return Vec3f((*this)[0]*k,(*this)[1]*k,(*this)[2]*k);
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}
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};
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}
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#endif
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