void Luce(double x, double y, double z,double dimensione,float r,float g,float b,float iox,float ioy,float ioz,int Tex)
{
Vector Position;
Vector MyPosition;
Position.x = x;
Position.y = y;
Position.z = z;
MyPosition.x=iox;
MyPosition.y=ioy;
MyPosition.z=ioz;
Vector sight = VectorDiff(MyPosition, Position);
Vector cz;
cz.x = 0;
cz.y = 0;
cz.z = 1;
Vector cross1 = VectorMultiply( sight, cz );
Vector cross2 = VectorMultiply( sight, cross1 );
cross1 = VectorNormalize(cross1);
cross2 = VectorNormalize(cross2);
cross1 = VectorScalarMultiply(cross1, dimensione);
cross2 = VectorScalarMultiply(cross2, dimensione);
glColor3f(r,g,b);
glEnable(GL_TEXTURE_2D);
glEnable (GL_BLEND);
glBlendFunc( (1,1,1,1), (1,1,1,1));
glDepthMask (GL_FALSE);
glBindTexture( GL_TEXTURE_2D, texture[Tex] );
glBegin(GL_QUADS);
glTexCoord2d( 0.0, 0.0 );
glVertex3d( Position.x + cross1.x, Position.y + cross1.y, Position.z + cross1.z);
glTexCoord2d( 1.0, 0.0 );
glVertex3d( Position.x - cross2.x, Position.y - cross2.y, Position.z - cross2.z);
glTexCoord2d( 1.0, 1.0 );
glVertex3d( Position.x - cross1.x, Position.y - cross1.y, Position.z - cross1.z);
glTexCoord2d( 0.0, 1.0 );
glVertex3d( Position.x + cross2.x, Position.y + cross2.y, Position.z + cross2.z);
glEnd();
glDisable(GL_TEXTURE_2D);
glDisable (GL_BLEND);
glDepthMask (GL_TRUE);
}
TEST(DSPSingle, TestVectorScalarMultiply)
{
float out[10];
VectorScalarMultiply(out, ramp, 2.0, 10);
for (unsigned i = 0; i < 10; ++i)
{
ASSERT_FLOAT_EQ(2.0 * ramp[i], out[i]);
}
}
/* UpsamplerProcess ****************************************************/
Error_t
UpsamplerProcess(Upsampler *upsampler,
float *outBuffer,
const float *inBuffer,
unsigned n_samples)
{
float tempbuf[n_samples];
if (upsampler && outBuffer)
{
for (unsigned filt = 0; filt < upsampler->factor; ++filt)
{
FIRFilterProcess(upsampler->polyphase[filt], tempbuf, inBuffer, n_samples);
CopyBufferStride(outBuffer+filt, upsampler->factor, tempbuf, 1, n_samples);
}
VectorScalarMultiply(outBuffer, (const float*)outBuffer,
upsampler->factor, n_samples * upsampler->factor);
return NOERR;
}
else
{
return NULL_PTR_ERROR;
}
}
static Error_t
RBJFilterUpdate(RBJFilter* filter)
{
filter->cosOmega = cos(filter->omega);
filter->sinOmega = sin(filter->omega);
switch (filter->type)
{
case LOWPASS:
filter->alpha = filter->sinOmega / (2.0 * filter->Q);
filter->b[0] = (1 - filter->cosOmega) / 2;
filter->b[1] = 1 - filter->cosOmega;
filter->b[2] = filter->b[0];
filter->a[0] = 1 + filter->alpha;
filter->a[1] = -2 * filter->cosOmega;
filter->a[2] = 1 - filter->alpha;
break;
case HIGHPASS:
filter->alpha = filter->sinOmega / (2.0 * filter->Q);
filter->b[0] = (1 + filter->cosOmega) / 2;
filter->b[1] = -(1 + filter->cosOmega);
filter->b[2] = filter->b[0];
filter->a[0] = 1 + filter->alpha;
filter->a[1] = -2 * filter->cosOmega;
filter->a[2] = 1 - filter->alpha;
break;
case BANDPASS:
filter->alpha = filter->sinOmega * sinhf(logf(2.0) / 2.0 * \
filter->Q * filter->omega/filter->sinOmega);
filter->b[0] = filter->sinOmega / 2;
filter->b[1] = 0;
filter->b[2] = -filter->b[0];
filter->a[0] = 1 + filter->alpha;
filter->a[1] = -2 * filter->cosOmega;
filter->a[2] = 1 - filter->alpha;
break;
case ALLPASS:
filter->alpha = filter->sinOmega / (2.0 * filter->Q);
filter->b[0] = 1 - filter->alpha;
filter->b[1] = -2 * filter->cosOmega;
filter->b[2] = 1 + filter->alpha;
filter->a[0] = filter->b[2];
filter->a[1] = filter->b[1];
filter->a[2] = filter->b[0];
break;
case NOTCH:
filter->alpha = filter->sinOmega * sinhf(logf(2.0) / 2.0 * \
filter->Q * filter->omega/filter->sinOmega);
filter->b[0] = 1;
filter->b[1] = -2 * filter->cosOmega;
filter->b[2] = 1;
filter->a[0] = 1 + filter->alpha;
filter->a[1] = filter->b[1];
filter->a[2] = 1 - filter->alpha;
break;
case PEAK:
filter->alpha = filter->sinOmega * sinhf(logf(2.0) / 2.0 * \
filter->Q * filter->omega/filter->sinOmega);
filter->b[0] = 1 + (filter->alpha * filter->A);
filter->b[1] = -2 * filter->cosOmega;
filter->b[2] = 1 - (filter->alpha * filter->A);
filter->a[0] = 1 + (filter->alpha / filter->A);
filter->a[1] = filter->b[1];
filter->a[2] = 1 - (filter->alpha / filter->A);
break;
case LOW_SHELF:
filter->alpha = filter->sinOmega / 2.0 * sqrt( (filter->A + 1.0 / \
filter->A) * (1.0 / filter->Q - 1.0) + 2.0);
filter->b[0] = filter->A * ((filter->A + 1) - ((filter->A - 1) * \
filter->cosOmega) + (2 * sqrtf(filter->A) * filter->alpha));
filter->b[1] = 2 * filter->A * ((filter->A - 1) - ((filter->A + 1) * \
filter->cosOmega));
filter->b[2] = filter->A * ((filter->A + 1) - ((filter->A - 1) * \
filter->cosOmega) - (2 * sqrtf(filter->A) * filter->alpha));
filter->a[0] = ((filter->A + 1) + ((filter->A - 1) * \
filter->cosOmega) + (2 * sqrtf(filter->A) * filter->alpha));
filter->a[1] = -2 * ((filter->A - 1) + ((filter->A + 1) * \
filter->cosOmega));
filter->a[2] = ((filter->A + 1) + ((filter->A - 1) * \
filter->cosOmega) - (2 * sqrtf(filter->A) * filter->alpha));
break;
case HIGH_SHELF:
filter->alpha = filter->sinOmega / 2.0 * sqrt( (filter->A + 1.0 / \
filter->A) * (1.0 / filter->Q - 1.0) + 2.0);
filter->b[0] = filter->A * ((filter->A + 1) + ((filter->A - 1) * \
filter->cosOmega) + (2 * sqrtf(filter->A) * filter->alpha));
filter->b[1] = -2 * filter->A * ((filter->A - 1) + ((filter->A + 1) * \
filter->cosOmega));
filter->b[2] = filter->A * ((filter->A + 1) + ((filter->A - 1) * \
filter->cosOmega) - (2 * sqrtf(filter->A) * filter->alpha));
filter->a[0] = ((filter->A + 1) - ((filter->A - 1) * \
filter->cosOmega) + (2 * sqrtf(filter->A) * filter->alpha));
filter->a[1] = 2 * ((filter->A - 1) - ((filter->A + 1) * \
filter->cosOmega));
filter->a[2] = ((filter->A + 1) - ((filter->A - 1) * \
filter->cosOmega) - (2 * sqrtf(filter->A) * filter->alpha));
break;
default:
return ERROR;
break;
}
// Normalize filter coefficients
float factor = 1.0 / filter->a[0];
float norm_a[2];
float norm_b[3];
VectorScalarMultiply(norm_a, &filter->a[1], factor, 2);
VectorScalarMultiply(norm_b, filter->b, factor, 3);
BiquadFilterUpdateKernel(filter->biquad, norm_b, norm_a);
return NOERR;
}