Modified source engine (2017) developed by valve and leaked in 2020. Not for commercial purporses
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5 years ago
//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose:
//
//=============================================================================//
#include "mathlib/vector.h"
#include "bspfile.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
void SetupLightNormalFromProps( const QAngle &angles, float angle, float pitch, Vector &output )
{
if (angle == ANGLE_UP)
{
output[0] = output[1] = 0;
output[2] = 1;
}
else if (angle == ANGLE_DOWN)
{
output[0] = output[1] = 0;
output[2] = -1;
}
else
{
// if we don't have a specific "angle" use the "angles" YAW
if ( !angle )
{
angle = angles[YAW];
}
output[2] = 0;
output[0] = (float)cos (angle/180*M_PI);
output[1] = (float)sin (angle/180*M_PI);
}
if ( !pitch )
{
// if we don't have a specific "pitch" use the "angles" PITCH
pitch = angles[PITCH];
}
output[2] = (float)sin(pitch/180*M_PI);
output[0] *= (float)cos(pitch/180*M_PI);
output[1] *= (float)cos(pitch/180*M_PI);
}