Re: [SLE] Need advice

Carl,

On Sunday 12 February 2006 16:51, Carl Hartung wrote:
Hi Randall,

On Sunday 12 February 2006 18:50, Randall R Schulz wrote:
Even then, it's a "sawtooth."

Not if it's one pixel wide and exactly 45 degrees off the x or y
axis. :-)

Nonsense. Pixels have rectangular boundaries. That's all there is to it.


...

Vectors are not "less susceptible" to aliasing, they're immune to
it.

Wrong. They can't be considered "immune" when the only available
output devices are raster. See my HDTV comment, above.

They absolutely are immune to such artifacts.

Vectors (and cubic or bicubic splines or any other kind of parametric
curve) are mathematical objects. They simply don't have any "rough
edges" or aliasing.

Things only depart from the mathematical precision when a physical
display device enters the picture.


It's only when you must rasterize the vector image that the
inevitable degradation occurs, but because the image itself is
represented by vectors, it will render at any resolution on any
device in the best manner available for that output device.

I used a lot less words to say exactly the same thing: "Vectors scale
and are much less susceptible to "jaggies" " :-)

You mislead when you say "less susceptible." They are, plain and simple,
immune to it.

And you were only talking about drawing lines and curves on a raster. My
point here is that changing the size or resolution of an existing
raster image also encounters related but distinct problems.


Feel free to use as few words as you like. Zero's always a safe choice.


Carl


Randall Schulz

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