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Mar
11
comment Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
I have used face averaged in my program to estimate the normals which works ok. An by the looks of this paper geometrictools.com/Documentation/MeshDifferentialGeometry.pdf rlgordonma's answer using the partial partial derivatives should be fine. (top of page 4)
Mar
11
accepted Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
Mar
11
comment Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
is this of any use to me? mathworld.wolfram.com/NormalVector.html
Mar
11
comment Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
Based on what your saying since the function is sort of a rotation I could bodge it and rotate the 2d normal by the angle is on and get the correct normal. But ideally I am looking for a direct route to that 3d normal.
Mar
11
comment Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
I thought it was correct since for example. y = 2x^3 -> dy/dx = 6x. So delta F should have a 3d vector?
Mar
10
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Mar
10
revised Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
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Mar
10
comment Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
Hold on I'm a little confused by this now. How would I go about getting a directional vector for the normal at a defined point e.g. x=0.5, z=0.5?
Feb
18
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Feb
18
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Feb
18
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Feb
18
reviewed Approve suggested edit on Differentiation in 3d of sin root and fractions in one! -> to find the normal to a function
Feb
18
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Feb
18
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