Vector Graphic's reference to? pixels? Percentage?

[cs.punk]

What exactly does vector images use as reference?

 

Playing about with Adobe Flash, if you show the grid, change grid block size to 1x1 and create a 1(px?) line it does'nt really 'snap to grid'?

[ignace]

a vector image doesn't use pixels, it uses (mathematical) vectors you'll notice the difference when you zoom

[cs.punk]

Well I get the whole vector thing but in what does it have 'reference' to?

 

What 'dictates' the distance between a line and the border?

[cs.punk]

Basically what I would like to know is what it snaps to? Pixels or perhaps a increasing 'mathematical grid'?

 

if you have a vector image and change it to a size of 3x3. Now you draw a line from the top left to middle bottom.

 

// Fictional
line (1px, 3, 

// or
line (1px, 10% x 80%, 90 x 50%)

 

With actionscript you would use pixels as reference but why would it enable to draw a line in between 2 pixels in flash?

[ignace]

I don't understand what you mean, try http://en.wikipedia.org/wiki/Vector_graphics

[cs.punk]

In what 'reference' is it using to place a line, dot circle or anything on the blank 'canvas'?

 

In what 'format or equations' is it stored?

 

draw a line from *equation1* left and *equation2* from top.  to speicified point *equation3*

 

What would equation one look like? 15% from the left, and 10% from top? Here it would be using percentages..

 

Just curious. 

[Daniel0]

I'm not sure how you would choose to actually implement it, but a line in [imath]\mathbb{R}^2[/imath] from (1,1) to (4, would be represented by the following set of points:

 

[math]M = \left\{\left(x,\frac{7}{3}x+1\right)|1\leq x \leq 4\right\}[/math]

 

This set is infinite of course, so when actually drawing the line you would select a discrete amount of points and paint the pixel that is nearest a particular point.

 

For a curve you could use a Bézier curve.

[cs.punk]

I'm not sure how you would choose to actually implement it, but a line in [imath]\mathbb{R}^2[/imath] from (1,1) to (4, would be represented by the following set of points:

 

[math]M = \left\{\left(x,\frac{7}{3}x+1\right)|1\leq x \leq 4\right\}[/math]

 

This set is infinite of course, so when actually drawing the line you would select a discrete amount of points and paint the pixel that is nearest a particular point.

 

For a curve you could use a Bézier curve.

 

Pretty much what I was looking for, thanks! Now if only I could understand it. :-\