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/**
* @file v3color.h
* @brief LLColor3 class header file.
*
* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#ifndef LL_V3COLOR_H
#define LL_V3COLOR_H
class LLColor4;
#include "llerror.h"
#include "llmath.h"
#include "llsd.h"
// LLColor3 = |r g b|
static const U32 LENGTHOFCOLOR3 = 3;
class LLColor3
{
public:
F32 mV[LENGTHOFCOLOR3];
static LLColor3 white;
static LLColor3 black;
static LLColor3 grey;
public:
LLColor3(); // Initializes LLColor3 to (0, 0, 0)
LLColor3(F32 r, F32 g, F32 b); // Initializes LLColor3 to (r, g, b)
LLColor3(const F32 *vec); // Initializes LLColor3 to (vec[0]. vec[1], vec[2])
LLColor3(char *color_string); // html format color ie "#FFDDEE"
explicit LLColor3(const LLColor4& color4); // "explicit" to avoid automatic conversion
LLColor3(const LLSD& sd);
LLSD getValue() const
{
LLSD ret;
ret[0] = mV[0];
ret[1] = mV[1];
ret[2] = mV[2];
return ret;
}
void setValue(const LLSD& sd)
{
mV[0] = (F32) sd[0].asReal();;
mV[1] = (F32) sd[1].asReal();;
mV[2] = (F32) sd[2].asReal();;
}
void calcHSL(F32* hue, F32* saturation, F32* luminance) const;
const LLColor3& setToBlack(); // Clears LLColor3 to (0, 0, 0)
const LLColor3& setToWhite(); // Zero LLColor3 to (0, 0, 0)
const LLColor3& setVec(F32 x, F32 y, F32 z); // Sets LLColor3 to (x, y, z)
const LLColor3& setVec(const LLColor3 &vec); // Sets LLColor3 to vec
const LLColor3& setVec(const F32 *vec); // Sets LLColor3 to vec
F32 magVec() const; // Returns magnitude of LLColor3
F32 magVecSquared() const; // Returns magnitude squared of LLColor3
F32 normVec(); // Normalizes and returns the magnitude of LLColor3
const LLColor3& operator=(const LLColor4 &a);
friend std::ostream& operator<<(std::ostream& s, const LLColor3 &a); // Print a
friend LLColor3 operator+(const LLColor3 &a, const LLColor3 &b); // Return vector a + b
friend LLColor3 operator-(const LLColor3 &a, const LLColor3 &b); // Return vector a minus b
friend const LLColor3& operator+=(LLColor3 &a, const LLColor3 &b); // Return vector a + b
friend const LLColor3& operator-=(LLColor3 &a, const LLColor3 &b); // Return vector a minus b
friend const LLColor3& operator*=(LLColor3 &a, const LLColor3 &b);
friend LLColor3 operator*(const LLColor3 &a, const LLColor3 &b); // Return a dot b
friend LLColor3 operator*(const LLColor3 &a, F32 k); // Return a times scaler k
friend LLColor3 operator*(F32 k, const LLColor3 &a); // Return a times scaler k
friend bool operator==(const LLColor3 &a, const LLColor3 &b); // Return a == b
friend bool operator!=(const LLColor3 &a, const LLColor3 &b); // Return a != b
friend const LLColor3& operator*=(LLColor3 &a, F32 k); // Return a times scaler k
friend LLColor3 operator-(const LLColor3 &a); // Return vector 1-rgb (inverse)
inline void clamp();
inline void exp(); // Do an exponential on the color
};
LLColor3 lerp(const LLColor3 &a, const LLColor3 &b, F32 u);
void LLColor3::clamp()
{
// Clamp the color...
if (mV[0] < 0.f)
{
mV[0] = 0.f;
}
else if (mV[0] > 1.f)
{
mV[0] = 1.f;
}
if (mV[1] < 0.f)
{
mV[1] = 0.f;
}
else if (mV[1] > 1.f)
{
mV[1] = 1.f;
}
if (mV[2] < 0.f)
{
mV[2] = 0.f;
}
else if (mV[2] > 1.f)
{
mV[2] = 1.f;
}
}
// Non-member functions
F32 distVec(const LLColor3 &a, const LLColor3 &b); // Returns distance between a and b
F32 distVec_squared(const LLColor3 &a, const LLColor3 &b);// Returns distance sqaured between a and b
inline LLColor3::LLColor3(void)
{
mV[0] = 0.f;
mV[1] = 0.f;
mV[2] = 0.f;
}
inline LLColor3::LLColor3(F32 r, F32 g, F32 b)
{
mV[VX] = r;
mV[VY] = g;
mV[VZ] = b;
}
inline LLColor3::LLColor3(const F32 *vec)
{
mV[VX] = vec[VX];
mV[VY] = vec[VY];
mV[VZ] = vec[VZ];
}
inline LLColor3::LLColor3(char* color_string) // takes a string of format "RRGGBB" where RR is hex 00..FF
{
if (strlen(color_string) < 6) /* Flawfinder: ignore */
{
mV[0] = 0.f;
mV[1] = 0.f;
mV[2] = 0.f;
return;
}
static char tempstr[7]; /* Flawfinder: ignore */
strncpy(tempstr,color_string,6); /* Flawfinder: ignore */
tempstr[6] = '\0';
mV[VZ] = (F32)strtol(&tempstr[4],NULL,16)/255.f;
tempstr[4] = '\0';
mV[VY] = (F32)strtol(&tempstr[2],NULL,16)/255.f;
tempstr[2] = '\0';
mV[VX] = (F32)strtol(&tempstr[0],NULL,16)/255.f;
}
inline const LLColor3& LLColor3::setToBlack(void)
{
mV[0] = 0.f;
mV[1] = 0.f;
mV[2] = 0.f;
return (*this);
}
inline const LLColor3& LLColor3::setToWhite(void)
{
mV[0] = 1.f;
mV[1] = 1.f;
mV[2] = 1.f;
return (*this);
}
inline const LLColor3& LLColor3::setVec(F32 r, F32 g, F32 b)
{
mV[0] = r;
mV[1] = g;
mV[2] = b;
return (*this);
}
inline const LLColor3& LLColor3::setVec(const LLColor3 &vec)
{
mV[0] = vec.mV[0];
mV[1] = vec.mV[1];
mV[2] = vec.mV[2];
return (*this);
}
inline const LLColor3& LLColor3::setVec(const F32 *vec)
{
mV[0] = vec[0];
mV[1] = vec[1];
mV[2] = vec[2];
return (*this);
}
inline F32 LLColor3::magVec(void) const
{
return fsqrtf(mV[0]*mV[0] + mV[1]*mV[1] + mV[2]*mV[2]);
}
inline F32 LLColor3::magVecSquared(void) const
{
return mV[0]*mV[0] + mV[1]*mV[1] + mV[2]*mV[2];
}
inline F32 LLColor3::normVec(void)
{
F32 mag = fsqrtf(mV[0]*mV[0] + mV[1]*mV[1] + mV[2]*mV[2]);
F32 oomag;
if (mag)
{
oomag = 1.f/mag;
mV[0] *= oomag;
mV[1] *= oomag;
mV[2] *= oomag;
}
return (mag);
}
inline void LLColor3::exp()
{
#if 0
mV[0] = ::exp(mV[0]);
mV[1] = ::exp(mV[1]);
mV[2] = ::exp(mV[2]);
#else
mV[0] = (F32)LL_FAST_EXP(mV[0]);
mV[1] = (F32)LL_FAST_EXP(mV[1]);
mV[2] = (F32)LL_FAST_EXP(mV[2]);
#endif
}
inline LLColor3 operator+(const LLColor3 &a, const LLColor3 &b)
{
return LLColor3(
a.mV[0] + b.mV[0],
a.mV[1] + b.mV[1],
a.mV[2] + b.mV[2]);
}
inline LLColor3 operator-(const LLColor3 &a, const LLColor3 &b)
{
return LLColor3(
a.mV[0] - b.mV[0],
a.mV[1] - b.mV[1],
a.mV[2] - b.mV[2]);
}
inline LLColor3 operator*(const LLColor3 &a, const LLColor3 &b)
{
return LLColor3(
a.mV[0] * b.mV[0],
a.mV[1] * b.mV[1],
a.mV[2] * b.mV[2]);
}
inline LLColor3 operator*(const LLColor3 &a, F32 k)
{
return LLColor3( a.mV[0] * k, a.mV[1] * k, a.mV[2] * k );
}
inline LLColor3 operator*(F32 k, const LLColor3 &a)
{
return LLColor3( a.mV[0] * k, a.mV[1] * k, a.mV[2] * k );
}
inline bool operator==(const LLColor3 &a, const LLColor3 &b)
{
return ( (a.mV[0] == b.mV[0])
&&(a.mV[1] == b.mV[1])
&&(a.mV[2] == b.mV[2]));
}
inline bool operator!=(const LLColor3 &a, const LLColor3 &b)
{
return ( (a.mV[0] != b.mV[0])
||(a.mV[1] != b.mV[1])
||(a.mV[2] != b.mV[2]));
}
inline const LLColor3 &operator*=(LLColor3 &a, const LLColor3 &b)
{
a.mV[0] *= b.mV[0];
a.mV[1] *= b.mV[1];
a.mV[2] *= b.mV[2];
return a;
}
inline const LLColor3& operator+=(LLColor3 &a, const LLColor3 &b)
{
a.mV[0] += b.mV[0];
a.mV[1] += b.mV[1];
a.mV[2] += b.mV[2];
return a;
}
inline const LLColor3& operator-=(LLColor3 &a, const LLColor3 &b)
{
a.mV[0] -= b.mV[0];
a.mV[1] -= b.mV[1];
a.mV[2] -= b.mV[2];
return a;
}
inline const LLColor3& operator*=(LLColor3 &a, F32 k)
{
a.mV[0] *= k;
a.mV[1] *= k;
a.mV[2] *= k;
return a;
}
inline LLColor3 operator-(const LLColor3 &a)
{
return LLColor3(
1.f - a.mV[0],
1.f - a.mV[1],
1.f - a.mV[2] );
}
// Non-member functions
inline F32 distVec(const LLColor3 &a, const LLColor3 &b)
{
F32 x = a.mV[0] - b.mV[0];
F32 y = a.mV[1] - b.mV[1];
F32 z = a.mV[2] - b.mV[2];
return fsqrtf( x*x + y*y + z*z );
}
inline F32 distVec_squared(const LLColor3 &a, const LLColor3 &b)
{
F32 x = a.mV[0] - b.mV[0];
F32 y = a.mV[1] - b.mV[1];
F32 z = a.mV[2] - b.mV[2];
return x*x + y*y + z*z;
}
inline LLColor3 lerp(const LLColor3 &a, const LLColor3 &b, F32 u)
{
return LLColor3(
a.mV[VX] + (b.mV[VX] - a.mV[VX]) * u,
a.mV[VY] + (b.mV[VY] - a.mV[VY]) * u,
a.mV[VZ] + (b.mV[VZ] - a.mV[VZ]) * u);
}
#endif
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