zdoom/raze-gles
0
0
Fork 0
mirror of https://github.com/ZDoom/raze-gles.git synced 2024-11-10 14:52:01 +00:00
Code Issues Projects Releases Packages Wiki Activity

- binaryangle.h: Extend file with sine/cosine inline helper functions.

Browse source
This commit is contained in:
Mitchell Richters 2020-11-22 14:40:32 +11:00 committed by Christoph Oelckers
parent a906067102
commit 85bb248309
1 changed files with 145 additions and 26 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

171
source/core/binaryangle.h
View file

@ -46,9 +46,58 @@ class FSerializer;
enum
{
BAMUNIT = 1 << 21
BAMUNIT = 1 << 21,
SINSHIFT = 14
};
//---------------------------------------------------------------------------
//
// Constants used for Build sine/cosine functions.
//
//---------------------------------------------------------------------------
constexpr double BAngRadian = pi::pi() * (1. / 1024.);
constexpr double BRadAngScale = 1. / BAngRadian;
//---------------------------------------------------------------------------
//
// Build sine inline functions.
//
//---------------------------------------------------------------------------
inline int32_t bsin(const int16_t& ang, const int8_t& shift = 0)
{
return shift < 0 ? sintable[ang & 2047] >> abs(shift) : sintable[ang & 2047] << shift;
}
inline double bsinf(const double& ang, const int8_t& shift = 0)
{
return sin(ang * BAngRadian) * (shift >= -SINSHIFT ? uint64_t(1) << (SINSHIFT + shift) : 1. / (uint64_t(1) << abs(SINSHIFT + shift)));
}
//---------------------------------------------------------------------------
//
// Build cosine inline functions.
//
//---------------------------------------------------------------------------
inline int32_t bcos(const int16_t& ang, const int8_t& shift = 0)
{
return shift < 0 ? sintable[(ang + 512) & 2047] >> abs(shift) : sintable[(ang + 512) & 2047] << shift;
}
inline double bcosf(const double& ang, const int8_t& shift = 0)
{
return cos(ang * BAngRadian) * (shift >= -SINSHIFT ? uint64_t(1) << (SINSHIFT + shift) : 1. / (uint64_t(1) << abs(SINSHIFT + shift)));
}
//---------------------------------------------------------------------------
//
//
//
//---------------------------------------------------------------------------
class binangle
{
uint32_t value;
@ -76,8 +125,8 @@ public:
double fsin() const { return sin(asrad()); }
double fcos() const { return cos(asrad()); }
double ftan() const { return tan(asrad()); }
int bsin() const { return sintable[asbuild()]; }
int bcos() const { return sintable[(asbuild() + 512) & 2047]; }
int bsin(const int8_t& shift = 0) const { return ::bsin(asbuild(), shift); }
int bcos(const int8_t& shift = 0) const { return ::bcos(asbuild(), shift); }
constexpr bool operator== (binangle other) const
{
@ -113,6 +162,24 @@ public:
};
inline constexpr binangle bamang(uint32_t v) { return binangle(v); }
inline constexpr binangle q16ang(uint32_t v) { return binangle(v << 5); }
inline constexpr binangle buildang(uint32_t v) { return binangle(v << 21); }
inline binangle radang(double v) { return binangle(xs_CRoundToUInt(v * (0x80000000u / pi::pi()))); }
inline binangle degang(double v) { return binangle(FloatToAngle(v)); }
inline FSerializer &Serialize(FSerializer &arc, const char *key, binangle &obj, binangle *defval)
{
return Serialize(arc, key, obj.value, defval ? &defval->value : nullptr);
}
//---------------------------------------------------------------------------
//
//
//
//---------------------------------------------------------------------------
class lookangle
{
int32_t value;
@ -140,6 +207,8 @@ public:
double fsin() const { return sin(asrad()); }
double fcos() const { return cos(asrad()); }
double ftan() const { return tan(asrad()); }
int bsin(const int8_t& shift = 0) const { return ::bsin(asbuild(), shift); }
int bcos(const int8_t& shift = 0) const { return ::bcos(asbuild(), shift); }
constexpr bool operator== (lookangle other) const
{
@ -175,6 +244,18 @@ public:
};
inline constexpr lookangle bamlook(int32_t v) { return lookangle(v); }
inline constexpr lookangle q16look(int32_t v) { return lookangle(v << 5); }
inline constexpr lookangle buildlook(int32_t v) { return lookangle(v << 21); }
inline lookangle radlook(double v) { return lookangle(xs_CRoundToUInt(v * (0x80000000u / pi::pi()))); }
inline lookangle deglook(double v) { return lookangle(FloatToAngle(v)); }
inline FSerializer &Serialize(FSerializer &arc, const char *key, lookangle &obj, lookangle *defval)
{
return Serialize(arc, key, obj.value, defval ? &defval->value : nullptr);
}
//---------------------------------------------------------------------------
//
// Constants and functions for use with fixedhoriz and friendly functions.
@ -198,6 +279,12 @@ inline int32_t PitchToBAM(double horizAngle) { return xs_CRoundToInt(clamp(horiz
inline constexpr double BAMToPitch(int32_t bam) { return bam * (45. / 1073741823.5); }
//---------------------------------------------------------------------------
//
//
//
//---------------------------------------------------------------------------
class fixedhoriz
{
fixed_t value;
@ -279,35 +366,67 @@ public:
};
inline constexpr binangle bamang(uint32_t v) { return binangle(v); }
inline constexpr binangle q16ang(uint32_t v) { return binangle(v << 5); }
inline constexpr binangle buildang(uint32_t v) { return binangle(v << 21); }
inline binangle radang(double v) { return binangle(xs_CRoundToUInt(v * (0x80000000u / pi::pi()))); }
inline binangle degang(double v) { return binangle(FloatToAngle(v)); }
inline constexpr lookangle bamlook(int32_t v) { return lookangle(v); }
inline constexpr lookangle q16look(int32_t v) { return lookangle(v << 5); }
inline constexpr lookangle buildlook(int32_t v) { return lookangle(v << 21); }
inline lookangle radlook(double v) { return lookangle(xs_CRoundToUInt(v * (0x80000000u / pi::pi()))); }
inline lookangle deglook(double v) { return lookangle(FloatToAngle(v)); }
inline constexpr fixedhoriz q16horiz(fixed_t v) { return fixedhoriz(v); }
inline constexpr fixedhoriz buildhoriz(int v) { return fixedhoriz(IntToFixed(v)); }
inline fixedhoriz pitchhoriz(double v) { return fixedhoriz(PitchToHoriz(v)); }
inline fixedhoriz bamhoriz(int32_t v) { return pitchhoriz(BAMToPitch(v)); }
inline FSerializer &Serialize(FSerializer &arc, const char *key, binangle &obj, binangle *defval)
{
return Serialize(arc, key, obj.value, defval ? &defval->value : nullptr);
}
inline FSerializer &Serialize(FSerializer &arc, const char *key, lookangle &obj, lookangle *defval)
{
return Serialize(arc, key, obj.value, defval ? &defval->value : nullptr);
}
inline FSerializer &Serialize(FSerializer &arc, const char *key, fixedhoriz &obj, fixedhoriz *defval)
{
return Serialize(arc, key, obj.value, defval ? &defval->value : nullptr);
}
//---------------------------------------------------------------------------
//
// Double-precision implementation of `getangle()` with associated wrappers and helper functions.
//
//---------------------------------------------------------------------------
inline double bradarangf(const double& vect)
{
return atan(vect) * BRadAngScale;
}
inline double bvectangf(const int32_t& x, const int32_t& y)
{
if ((x | y) == 0)
{
return 0;
}
else if (x == 0)
{
return 512 + ((y < 0) << 10);
}
else if (y == 0)
{
return ((x < 0) << 10);
}
else if (x == y)
{
return 256 + ((x < 0) << 10);
}
else if (x == -y)
{
return 768 + ((x > 0) << 10);
}
else if (abs(x) > abs(y))
{
return fmod(bradarangf(double(y) / x) + ((x < 0) << 10), 2048.);
}
else
{
return fmod(bradarangf(double(x) / -y) + 512 + ((y < 0) << 10), 2048.);
}
}
inline int32_t bvectang(const int32_t& x, const int32_t& y)
{
return xs_CRoundToInt(bvectangf(x, y));
}
inline fixed_t bvectangq16(const int32_t& x, const int32_t& y)
{
return FloatToFixed(bvectangf(x, y));
}
inline binangle bvectangbam(const int32_t& x, const int32_t& y)
{
return bamang(xs_CRoundToUInt(bvectangf(x, y) * BAMUNIT));
}