# ars

committed 1be8b50

utils.mathematical: new 'dot_product' function; changed comments

# ars/utils/mathematical.py

` def radians_to_degrees(radians_):`
` 	return degrees(radians_)`
` `
`-# TODO: mix with the corresponding scalar-argument function`
`+# TODO: combine with the corresponding scalar-argument function`
` def vec3_radians_to_degrees(vector_):`
` 	result = []`
` 	for radians_ in vector_:`
` def degrees_to_radians(degrees_):`
` 	return radians(degrees_)`
` `
`-# TODO: mix with the corresponding scalar-argument function`
`+# TODO: combine with the corresponding scalar-argument function`
` def vec3_degrees_to_radians(vector_):`
` 	result = []`
` 	for degrees_ in vector_:`
` `
` def dot_product3(vector1, vector2):`
` 	"""Returns the dot product of 3-vectors vector1 and vector2"""`
`-	#TODO: convert it so it can handle vector of any dimension`
`-	return vector1[0] * vector2[0] + vector1[1] * vector2[1] + vector1[2] * vector2[2]`
`+	return dot_product(vector1, vector2)`
`+`
`+def dot_product(vec1, vec2):`
`+	"""Efficient dot-product operation between two vectors of the same size.`
`+	source: http://docs.python.org/library/itertools.html`
`+`
`+	"""`
`+	return sum(itertools.imap(operator.mul, vec1, vec2))`
` `
` def cross_product(vector1, vector2):`
` 	"""Returns the cross_product product of 3-vectors vector1 and vector2"""`
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