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featherkit/src/rendering/color.cpp at master · therocode/featherkit · GitHub
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#
include
<
fea/rendering/color.hpp
>
#
include
<
algorithm
>
namespace
fea
{
Color::Color
()
{
mRed
=
0u
;
mGreen
=
0u
;
mBlue
=
0u
;
mAlpha
=
255u
;
}
Color::Color
(
float
r,
float
g,
float
b,
float
a)
{
mRed
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, r)) *
255
.
0f
);
mGreen
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, g)) *
255
.
0f
);
mBlue
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, b)) *
255
.
0f
);
mAlpha
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, a)) *
255
.
0f
);
}
Color::Color
(
int32_t
r,
int32_t
g,
int32_t
b,
int32_t
a)
{
mRed
=
std::max
(
0
,
std::min
(
255
, r));
mGreen
=
std::max
(
0
,
std::min
(
255
, g));
mBlue
=
std::max
(
0
,
std::min
(
255
, b));
mAlpha
=
std::max
(
0
,
std::min
(
255
, a));
}
Color::Color
(
int32_t
hexValue,
float
a)
{
hexValue =
std::max
(
0
,
std::min
(
0xFFFFFF
, hexValue));
mRed
= (hexValue >>
16
) &
0xFF
;
mGreen
= (hexValue >>
8
) &
0xFF
;
mBlue
= hexValue &
0xFF
;
mAlpha
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, a)) *
255
.
0f
);
}
Color::Color
(
int32_t
hexValue,
int32_t
a)
{
hexValue =
std::max
(
0
,
std::min
(
0xFFFFFF
, hexValue));
mRed
= (hexValue >>
16
) &
0xFF
;
mGreen
= (hexValue >>
8
) &
0xFF
;
mBlue
= hexValue &
0xFF
;
mAlpha
=
std::max
(
0
,
std::min
(
255
, a));
}
Color Color::
operator
+(
const
Color& other)
const
{
Color result;
result.
mRed
= (
uint8_t
)
std::min
((
int16_t
)
mRed
+ other.
mRed
,
255
);
result.
mGreen
= (
uint8_t
)
std::min
((
int16_t
)
mGreen
+ other.
mGreen
,
255
);
result.
mBlue
= (
uint8_t
)
std::min
((
int16_t
)
mBlue
+ other.
mBlue
,
255
);
result.
mAlpha
= (
uint8_t
)
std::min
((
int16_t
)
mAlpha
+ other.
mAlpha
,
255
);
return
result;
}
Color& Color::
operator
+=(
const
Color& other)
{
mRed
= (
uint8_t
)
std::min
((
int16_t
)
mRed
+ other.
mRed
,
255
);
mGreen
= (
uint8_t
)
std::min
((
int16_t
)
mGreen
+ other.
mGreen
,
255
);
mBlue
= (
uint8_t
)
std::min
((
int16_t
)
mBlue
+ other.
mBlue
,
255
);
mAlpha
= (
uint8_t
)
std::min
((
int16_t
)
mAlpha
+ other.
mAlpha
,
255
);
return
*
this
;
}
Color Color::
operator
-(
const
Color& other)
const
{
Color result;
result.
mRed
= (
uint8_t
)
std::max
((
int16_t
)
mRed
- other.
mRed
,
0
);
result.
mGreen
= (
uint8_t
)
std::max
((
int16_t
)
mGreen
- other.
mGreen
,
0
);
result.
mBlue
= (
uint8_t
)
std::max
((
int16_t
)
mBlue
- other.
mBlue
,
0
);
result.
mAlpha
= (
uint8_t
)
std::max
((
int16_t
)
mAlpha
- other.
mAlpha
,
0
);
return
result;
}
Color& Color::
operator
-=(
const
Color& other)
{
mRed
= (
uint8_t
)
std::max
((
int16_t
)
mRed
- other.
mRed
,
0
);
mGreen
= (
uint8_t
)
std::max
((
int16_t
)
mGreen
- other.
mGreen
,
0
);
mBlue
= (
uint8_t
)
std::max
((
int16_t
)
mBlue
- other.
mBlue
,
0
);
mAlpha
= (
uint8_t
)
std::max
((
int16_t
)
mAlpha
- other.
mAlpha
,
0
);
return
*
this
;
}
Color Color::
operator
*(
const
Color& other)
const
{
Color result;
result.
mRed
= (
uint8_t
)((
int16_t
)
mRed
* other.
mRed
/
255
);
result.
mGreen
= (
uint8_t
)((
int16_t
)
mGreen
* other.
mGreen
/
255
);
result.
mBlue
= (
uint8_t
)((
int16_t
)
mBlue
* other.
mBlue
/
255
);
result.
mAlpha
= (
uint8_t
)((
int16_t
)
mAlpha
* other.
mAlpha
/
255
);
return
result;
}
Color& Color::
operator
*=(
const
Color& other)
{
mRed
= (
uint8_t
)((
int16_t
)
mRed
* other.
mRed
/
255
);
mGreen
= (
uint8_t
)((
int16_t
)
mGreen
* other.
mGreen
/
255
);
mBlue
= (
uint8_t
)((
int16_t
)
mBlue
* other.
mBlue
/
255
);
mAlpha
= (
uint8_t
)((
int16_t
)
mAlpha
* other.
mAlpha
/
255
);
return
*
this
;
}
Color Color::
operator
/(
const
Color& other)
const
{
Color result;
if
(other.
mRed
==
0
)
result.
mRed
=
255
;
else
{
float
tempRed = ((
float
)
mRed
/
255
.
0f
) / ((
float
)other.
mRed
/
255
.
0f
);
tempRed =
std::min
(tempRed,
1
.
0f
);
result.
mRed
= (
uint8_t
)(tempRed *
255
.
0f
);
}
if
(other.
mGreen
==
0
)
result.
mGreen
=
255
;
else
{
float
tempGreen = ((
float
)
mGreen
/
255
.
0f
) / ((
float
)other.
mGreen
/
255
.
0f
);
tempGreen =
std::min
(tempGreen,
1
.
0f
);
result.
mGreen
= (
uint8_t
)(tempGreen *
255
.
0f
);
}
if
(other.
mBlue
==
0
)
result.
mBlue
=
255
;
else
{
float
tempBlue = ((
float
)
mBlue
/
255
.
0f
) / ((
float
)other.
mBlue
/
255
.
0f
);
tempBlue =
std::min
(tempBlue,
1
.
0f
);
result.
mBlue
= (
uint8_t
)(tempBlue *
255
.
0f
);
}
if
(other.
mAlpha
==
0
)
result.
mAlpha
=
255
;
else
{
float
tempAlpha = ((
float
)
mAlpha
/
255
.
0f
) / ((
float
)other.
mAlpha
/
255
.
0f
);
tempAlpha =
std::min
(tempAlpha,
1
.
0f
);
result.
mAlpha
= (
uint8_t
)(tempAlpha *
255
.
0f
);
}
return
result;
}
Color& Color::
operator
/=(
const
Color& other)
{
if
(other.
mRed
==
0
)
mRed
=
255
;
else
{
float
tempRed = ((
float
)
mRed
/
255
.
0f
) / ((
float
)other.
mRed
/
255
.
0f
);
tempRed =
std::min
(tempRed,
1
.
0f
);
mRed
= (
uint8_t
)(tempRed *
255
.
0f
);
}
if
(other.
mGreen
==
0
)
mGreen
=
255
;
else
{
float
tempGreen = ((
float
)
mGreen
/
255
.
0f
) / ((
float
)other.
mGreen
/
255
.
0f
);
tempGreen =
std::min
(tempGreen,
1
.
0f
);
mGreen
= (
uint8_t
)(tempGreen *
255
.
0f
);
}
if
(other.
mBlue
==
0
)
mBlue
=
255
;
else
{
float
tempBlue = ((
float
)
mBlue
/
255
.
0f
) / ((
float
)other.
mBlue
/
255
.
0f
);
tempBlue =
std::min
(tempBlue,
1
.
0f
);
mBlue
= (
uint8_t
)(tempBlue *
255
.
0f
);
}
if
(other.
mAlpha
==
0
)
mAlpha
=
255
;
else
{
float
tempAlpha = ((
float
)
mAlpha
/
255
.
0f
) / ((
float
)other.
mAlpha
/
255
.
0f
);
tempAlpha =
std::min
(tempAlpha,
1
.
0f
);
mAlpha
= (
uint8_t
)(tempAlpha *
255
.
0f
);
}
return
*
this
;
}
bool
Color::
operator
==(
const
Color& other)
const
{
return
(
mRed
== other.
mRed
) &&
(
mGreen
== other.
mGreen
) &&
(
mBlue
== other.
mBlue
) &&
(
mAlpha
== other.
mAlpha
);
}
bool
Color::
operator
!=(
const
Color& other)
const
{
return
!((
mRed
== other.
mRed
) &&
(
mGreen
== other.
mGreen
) &&
(
mBlue
== other.
mBlue
) &&
(
mAlpha
== other.
mAlpha
));
}
uint8_t
Color::r
()
const
{
return
mRed
;
}
uint8_t
Color::g
()
const
{
return
mGreen
;
}
uint8_t
Color::b
()
const
{
return
mBlue
;
}
uint8_t
Color::a
()
const
{
return
mAlpha
;
}
float
Color::rAsFloat
()
const
{
return
(
float
)
mRed
/
255
.
0f
;
}
float
Color::gAsFloat
()
const
{
return
(
float
)
mGreen
/
255
.
0f
;
}
float
Color::bAsFloat
()
const
{
return
(
float
)
mBlue
/
255
.
0f
;
}
float
Color::aAsFloat
()
const
{
return
(
float
)
mAlpha
/
255
.
0f
;
}
void
Color::setR
(
int32_t
r)
{
mRed
=
std::max
(
0
,
std::min
(
255
, r));
}
void
Color::setG
(
int32_t
g)
{
mGreen
=
std::max
(
0
,
std::min
(
255
, g));
}
void
Color::setB
(
int32_t
b)
{
mBlue
=
std::max
(
0
,
std::min
(
255
, b));
}
void
Color::setA
(
int32_t
a)
{
mAlpha
=
std::max
(
0
,
std::min
(
255
, a));
}
void
Color::setRAsFloat
(
float
r)
{
mRed
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, r)) *
255
.
0f
);
}
void
Color::setGAsFloat
(
float
g)
{
mGreen
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, g)) *
255
.
0f
);
}
void
Color::setBAsFloat
(
float
b)
{
mBlue
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, b)) *
255
.
0f
);
}
void
Color::setAAsFloat
(
float
a)
{
mAlpha
= (
uint8_t
)(
std::max
(
0
.
0f
,
std::min
(
1
.
0f
, a)) *
255
.
0f
);
}
const
Color
Color::Black
(
0
,
0
,
0
);
const
Color
Color::Gray
(
128
,
128
,
128
);
const
Color
Color::White
(
255
,
255
,
255
);
const
Color
Color::Transparent
(
0
,
0
,
0
,
0
);
const
Color
Color::Red
(
255
,
0
,
0
);
const
Color
Color::Green
(
0
,
255
,
0
);
const
Color
Color::Blue
(
0
,
0
,
255
);
const
Color
Color::Yellow
(
255
,
255
,
0
);
const
Color
Color::Magenta
(
255
,
0
,
255
);
const
Color
Color::Cyan
(
0
,
255
,
255
);
const
Color
Color::Pink
(
255
,
192
,
203
);
const
Color
Color::Brown
(
157
,
97
,
42
);
const
Color
Color::Tan
(
210
,
180
,
140
);
const
Color
Color::Orange
(
255
,
165
,
0
);
const
Color
Color::Teal
(
0
,
128
,
128
);
const
Color
Color::Purple
(
128
,
0
,
128
);
}
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