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Mathematical surface
The user can defines surfaces with equation of type z = f(x, y).
The surface definition is done is the window shown above. The
possible functions in the equation are :
'+' : add
'-' : substract
'*' : multiply
'/' : divide
'^' : power
'sqrt' : square root
'sin' : sinus, in degree
'cos' : cosinus
'tan' : tangent
'asin' : arcsinus
'acos' : arccosinus
'atan' : arctangent
'log' : logarithm, base 10
'ln' : logarithm, base e
'ceil' : round by
'floor' : round by default
'round' : round to nearest integer
'abs' : absolute value
'mod' : modulo
'=' : equality
'!=' : difference
'<' : lower
'>' : greater
'>=' : lower or equal
'<=' : greater or equal
'|' : logical or
'&' : logical and
'!' : logical not
constant : 'pi', 'e'.
The result of the equation z = 1 / (x^2 + y^2 + 0.01) is :
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