mirror of
https://github.com/godotengine/godot
synced 2024-09-05 21:10:10 +00:00
184 lines
4.5 KiB
C++
184 lines
4.5 KiB
C++
/* -----------------------------------------------------------------------------
|
|
|
|
Copyright (c) 2006 Simon Brown si@sjbrown.co.uk
|
|
|
|
Permission is hereby granted, free of charge, to any person obtaining
|
|
a copy of this software and associated documentation files (the
|
|
"Software"), to deal in the Software without restriction, including
|
|
without limitation the rights to use, copy, modify, merge, publish,
|
|
distribute, sublicense, and/or sell copies of the Software, and to
|
|
permit persons to whom the Software is furnished to do so, subject to
|
|
the following conditions:
|
|
|
|
The above copyright notice and this permission notice shall be included
|
|
in all copies or substantial portions of the Software.
|
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
|
|
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
|
|
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
|
|
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
-------------------------------------------------------------------------- */
|
|
|
|
#ifndef SQUISH_SIMD_FLOAT_H
|
|
#define SQUISH_SIMD_FLOAT_H
|
|
|
|
#include <algorithm>
|
|
|
|
namespace squish {
|
|
|
|
#define VEC4_CONST( X ) Vec4( X )
|
|
|
|
class Vec4
|
|
{
|
|
public:
|
|
typedef Vec4 const& Arg;
|
|
|
|
Vec4() {}
|
|
|
|
explicit Vec4( float s )
|
|
: m_x( s ),
|
|
m_y( s ),
|
|
m_z( s ),
|
|
m_w( s )
|
|
{
|
|
}
|
|
|
|
Vec4( float x, float y, float z, float w )
|
|
: m_x( x ),
|
|
m_y( y ),
|
|
m_z( z ),
|
|
m_w( w )
|
|
{
|
|
}
|
|
|
|
Vec3 GetVec3() const
|
|
{
|
|
return Vec3( m_x, m_y, m_z );
|
|
}
|
|
|
|
Vec4 SplatX() const { return Vec4( m_x ); }
|
|
Vec4 SplatY() const { return Vec4( m_y ); }
|
|
Vec4 SplatZ() const { return Vec4( m_z ); }
|
|
Vec4 SplatW() const { return Vec4( m_w ); }
|
|
|
|
Vec4& operator+=( Arg v )
|
|
{
|
|
m_x += v.m_x;
|
|
m_y += v.m_y;
|
|
m_z += v.m_z;
|
|
m_w += v.m_w;
|
|
return *this;
|
|
}
|
|
|
|
Vec4& operator-=( Arg v )
|
|
{
|
|
m_x -= v.m_x;
|
|
m_y -= v.m_y;
|
|
m_z -= v.m_z;
|
|
m_w -= v.m_w;
|
|
return *this;
|
|
}
|
|
|
|
Vec4& operator*=( Arg v )
|
|
{
|
|
m_x *= v.m_x;
|
|
m_y *= v.m_y;
|
|
m_z *= v.m_z;
|
|
m_w *= v.m_w;
|
|
return *this;
|
|
}
|
|
|
|
friend Vec4 operator+( Vec4::Arg left, Vec4::Arg right )
|
|
{
|
|
Vec4 copy( left );
|
|
return copy += right;
|
|
}
|
|
|
|
friend Vec4 operator-( Vec4::Arg left, Vec4::Arg right )
|
|
{
|
|
Vec4 copy( left );
|
|
return copy -= right;
|
|
}
|
|
|
|
friend Vec4 operator*( Vec4::Arg left, Vec4::Arg right )
|
|
{
|
|
Vec4 copy( left );
|
|
return copy *= right;
|
|
}
|
|
|
|
//! Returns a*b + c
|
|
friend Vec4 MultiplyAdd( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c )
|
|
{
|
|
return a*b + c;
|
|
}
|
|
|
|
//! Returns -( a*b - c )
|
|
friend Vec4 NegativeMultiplySubtract( Vec4::Arg a, Vec4::Arg b, Vec4::Arg c )
|
|
{
|
|
return c - a*b;
|
|
}
|
|
|
|
friend Vec4 Reciprocal( Vec4::Arg v )
|
|
{
|
|
return Vec4(
|
|
1.0f/v.m_x,
|
|
1.0f/v.m_y,
|
|
1.0f/v.m_z,
|
|
1.0f/v.m_w
|
|
);
|
|
}
|
|
|
|
friend Vec4 Min( Vec4::Arg left, Vec4::Arg right )
|
|
{
|
|
return Vec4(
|
|
std::min( left.m_x, right.m_x ),
|
|
std::min( left.m_y, right.m_y ),
|
|
std::min( left.m_z, right.m_z ),
|
|
std::min( left.m_w, right.m_w )
|
|
);
|
|
}
|
|
|
|
friend Vec4 Max( Vec4::Arg left, Vec4::Arg right )
|
|
{
|
|
return Vec4(
|
|
std::max( left.m_x, right.m_x ),
|
|
std::max( left.m_y, right.m_y ),
|
|
std::max( left.m_z, right.m_z ),
|
|
std::max( left.m_w, right.m_w )
|
|
);
|
|
}
|
|
|
|
friend Vec4 Truncate( Vec4::Arg v )
|
|
{
|
|
return Vec4(
|
|
v.m_x > 0.0f ? std::floor( v.m_x ) : std::ceil( v.m_x ),
|
|
v.m_y > 0.0f ? std::floor( v.m_y ) : std::ceil( v.m_y ),
|
|
v.m_z > 0.0f ? std::floor( v.m_z ) : std::ceil( v.m_z ),
|
|
v.m_w > 0.0f ? std::floor( v.m_w ) : std::ceil( v.m_w )
|
|
);
|
|
}
|
|
|
|
friend bool CompareAnyLessThan( Vec4::Arg left, Vec4::Arg right )
|
|
{
|
|
return left.m_x < right.m_x
|
|
|| left.m_y < right.m_y
|
|
|| left.m_z < right.m_z
|
|
|| left.m_w < right.m_w;
|
|
}
|
|
|
|
private:
|
|
float m_x;
|
|
float m_y;
|
|
float m_z;
|
|
float m_w;
|
|
};
|
|
|
|
} // namespace squish
|
|
|
|
#endif // ndef SQUISH_SIMD_FLOAT_H
|
|
|