Color Color::lighter(int amount) const {
Color ret = *this;
ret.toHSV();
ret.c[0] *= amount / 100.0;
ret.c[0] = double_clamp(ret.c[0]);
ret.toRGB();
return ret;
}
void sound_fillBuffer( float2* pBuffer, uint count )
{
const double sampleRateFactor = 2 * PI / (double)SoundSampleRate;
double samplePos = s_sound.samplePos;
double engineFrequency = s_sound.currentEngineFrequency;
double engineFrequencyShiftSpeed = 1.0f / ( double)SoundSampleRate;
for( uint i = 0u; i < count; ++i )
{
double engineShift = double_clamp(
( s_sound.targetEngineFrequency - engineFrequency ),
-4.0f * engineFrequencyShiftSpeed,
engineFrequencyShiftSpeed );
engineFrequency += engineShift;
const double x = samplePos * sampleRateFactor;
// very crude engine sound:
const double sample0 = cos( 40.0f * x ) * sin( 120.0f * x );
const double sample1 = cos( 10.0f * x ) * sin( 200.0f * x );
const double sample = double_lerp( sample0, sample1, engineFrequency );
const float panning = fabsf( 0.1f * cosf( (float)x ) );
float left, right;
pan( &left, &right, (float)sample, panning );
// left:
pBuffer->x = left;
// right:
pBuffer->y = right;
pBuffer++;
samplePos += 1.0;
s_sound.samplePos++;
}
s_sound.currentEngineFrequency = (float)engineFrequency;
}
void Color::setAlphaF(double _alpha) { c[3] = double_clamp(_alpha); }
void Color::setBlueF(double _blue) { c[0] = double_clamp(_blue); }
void Color::setGreenF(double _green) { c[1] = double_clamp(_green); }
void Color::setRedF(double _red) { c[2] = double_clamp(_red); }
