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Spherical Harmonics are templatized on the number of coefficients

This commit is contained in:
Paolo Cignoni 2008-10-08 14:01:34 +00:00
parent 2da37bd5f7
commit 39e2cf2b3e
1 changed files with 27 additions and 30 deletions
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13
vcg/math/spherical_harmonics.h
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@ -40,7 +40,7 @@ namespace math{
* imaginary and real parts of the Complex Spherical Harmonic Functions are defined * imaginary and real parts of the Complex Spherical Harmonic Functions are defined
* for positive m only. * for positive m only.
*/ */
template <typename ScalarType> template <typename ScalarType, int MAX_BAND>
class SphericalHarmonics{ class SphericalHarmonics{
private : private :
@ -59,8 +59,8 @@ private :
return scaling_factor(l, m) * Legendre<ScalarType>::AssociatedPolynomial(l, m, Cos(theta), Sin(theta)) * Sin(m * phi); return scaling_factor(l, m) * Legendre<ScalarType>::AssociatedPolynomial(l, m, Cos(theta), Sin(theta)) * Sin(m * phi);
} }
ScalarType * coefficients; ScalarType coefficients[MAX_BAND * MAX_BAND];
int max_band; static const int max_band = MAX_BAND;
public : public :
@ -85,22 +85,19 @@ public :
typedef ScalarType (*PolarFunction) (ScalarType theta, ScalarType phi); typedef ScalarType (*PolarFunction) (ScalarType theta, ScalarType phi);
static SphericalHarmonics Project(PolarFunction fun, unsigned max_band, unsigned n_samples) static SphericalHarmonics Project(PolarFunction fun, unsigned n_samples)
{ {
const ScalarType weight = 4 * M_PI; const ScalarType weight = 4 * M_PI;
unsigned sqrt_n_samples = (unsigned int) Sqrt((int)n_samples); unsigned sqrt_n_samples = (unsigned int) Sqrt((int)n_samples);
unsigned actual_n_samples = sqrt_n_samples * sqrt_n_samples; unsigned actual_n_samples = sqrt_n_samples * sqrt_n_samples;
unsigned n_coeff = max_band * max_band; unsigned n_coeff = MAX_BAND * MAX_BAND;
ScalarType one_over_n = 1.0/(ScalarType)sqrt_n_samples; ScalarType one_over_n = 1.0/(ScalarType)sqrt_n_samples;
RandomGenerator rand; RandomGenerator rand;
SphericalHarmonics sph; SphericalHarmonics sph;
sph.coefficients = new ScalarType[n_coeff];
sph.max_band = max_band;
int i = 0; int i = 0;
for (unsigned k = 0; k < n_coeff; k++ ) sph.coefficients[k] = 0; for (unsigned k = 0; k < n_coeff; k++ ) sph.coefficients[k] = 0;