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added operator + between color with clamped specialization for unsigned chars

This commit is contained in:
Paolo Cignoni 2008-07-09 15:18:08 +00:00
parent c3735f3e5d
commit 4555f74ee3
1 changed files with 18 additions and 0 deletions
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18
vcg/space/color4.h
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@ -148,6 +148,12 @@ public:
//inline void Import(const Color4<float> &b);
//inline void Import(const Color4<unsigned char> &b);
inline Color4 operator + ( const Color4 & p) const
{
return Color4( this->_v[0]+p._v[0], this->_v[1]+p._v[1], this->_v[2]+p._v[2], this->_v[3]+p._v[3] );
}
inline void lerp(const Color4 &c0, const Color4 &c1, const float x);
inline void lerp(const Color4 &c0, const Color4 &c1, const Color4 &c2, const Point3f &ip);
/// given a float and a range set the corresponding color in the well known red->green->blue color ramp. To reverse the direction of the ramp just swap minf and maxf.
@ -372,6 +378,18 @@ inline Color4<float> Clamp(Color4<float> &c)
return c;
}
template<>
inline Color4<unsigned char> Color4<unsigned char>::operator + ( const Color4<unsigned char> & p) const
{
return Color4<unsigned char>(
math::Clamp(int(_v[0])+int(p._v[0]),0,255),
math::Clamp(int(_v[1])+int(p._v[1]),0,255),
math::Clamp(int(_v[2])+int(p._v[2]),0,255),
math::Clamp(int(_v[3])+int(p._v[3]),0,255)
);
}
typedef Color4<unsigned char> Color4b;
typedef Color4<float> Color4f;