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- binaryangle.h: Clean up HorizToPitch() since we're on the new renderer.

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Mitchell Richters 2021-04-10 10:06:30 +10:00
parent 28fb752446
commit 8ebd1a9ebc
1 changed files with 5 additions and 15 deletions
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20
source/core/binaryangle.h
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@ -366,24 +366,14 @@ inline FSerializer &Serialize(FSerializer &arc, const char *key, binangle &obj,
//---------------------------------------------------------------------------
//
// Constants and functions for use with fixedhoriz and friendly functions.
// Functions for use with fixedhoriz and friendly functions.
//
//---------------------------------------------------------------------------
// 280039127 is the maximum horizon in Q16.16 the engine will handle before wrapping around.
constexpr double horizDiff = 280039127 * 3. / 100.;
// Degrees needed to convert horizAngle into pitch degrees.
constexpr double horizDegrees = 183.503609961216825;
// Ratio to convert inverse tangent to -90/90 degrees of pitch.
constexpr double horizRatio = horizDegrees / pi::pi();
// Horizon conversion functions.
inline double HorizToPitch(double horiz) { return atan2(horiz, horizDiff / 65536.) * horizRatio; }
inline double HorizToPitch(fixed_t q16horiz) { return atan2(q16horiz, horizDiff) * horizRatio; }
inline fixed_t PitchToHoriz(double horizAngle) { return xs_CRoundToInt(horizDiff * tan(horizAngle * (pi::pi() / horizDegrees))); }
inline int32_t PitchToBAM(double horizAngle) { return xs_CRoundToInt(clamp(horizAngle * (1073741823.5 / 45.), -INT32_MAX, INT32_MAX)); }
inline double HorizToPitch(double horiz) { return atan2(horiz, 128) * (180. / pi::pi()); }
inline double HorizToPitch(fixed_t q16horiz) { return atan2(q16horiz, IntToFixed(128)) * (180. / pi::pi()); }
inline fixed_t PitchToHoriz(double pitch) { return xs_CRoundToInt(IntToFixed(128) * tan(pitch * (pi::pi() / 180.))); }
inline int32_t PitchToBAM(double pitch) { return xs_CRoundToInt(clamp(pitch * (1073741823.5 / 45.), -INT32_MAX, INT32_MAX)); }
inline constexpr double BAMToPitch(int32_t bam) { return bam * (45. / 1073741823.5); }