Python cdfSamples Examples

Example #1

File: sampled_sphere.py Project: pavelgrib/hdr

	def mapSamplesOntoSphere(self, sampler, numSamples):
		if not self.data:
			self.emptySphere()
		if not self.integral:
			self.precomputeIntegral(sampler.npData)

		samples = sampler.cdfSamples(numSamples)
		sampleValues = sampler.sampleValues()
		for i, v in np.ndenumerate(self.data[self.data!=0]):
			theta, phi = thetaPhiFromLatlong((i[0], i[1]), npData)
			x,y,z = cartesianCoord( (theta, phi) )
			rgbValue = self.integral * monteCarloSum(sampleValues, (i))

Example #2

File: sampled_sphere.py Project: pavelgrib/hdr

	def mapSamplesOntoSphere(self, sampler, numSamples):
		if not self.data:
			self.emptySphere()
		if not self.integral:
			self.precomputeIntegral(sampler.npData)

		samples = sampler.cdfSamples(numSamples)
		sampleValues = sampler.sampleValues()
		for i, v in np.ndenumerate(self.data[self.data!=0]):
			theta, phi = thetaPhiFromLatlong((i[0], i[1]), npData)
			x,y,z = cartesianCoord( (theta, phi) )
			rgbValue = self.integral * monteCarloSum(sampleValues, (i))

	def saveSphereImage(self, filepath, asFloatingPoint):
		pass

if __name__ == '__main__':
	workingdir = '/Users/paul/github/hdr'
	grace_filepath = '/Users/paul/Dropbox/Imperial/advanced-graphics/GraceCathedra/grace_latlong.pfm'
	sampler = FPSampler(grace_filepath)
	for i in [64, 256, 1024]:
		s = SampledSphere(511)
		s.emptySphere()
		s.precomputeIntegral()
		mcSamples = sampler.cdfSamples(i)
		values = sampler.imageValues(mcSamples)
		s.mapSamples(samples)
		s.saveSphereImage(workingdir+'sampledSphere_' + str(i) + '.pfm', True)
		s.saveSphereImage(workingdir+'sampledSphere_' + str(i) + '.pfm', False)