Quick question on co-ordinates

[xHoly-Divinity]

Ok, the default location for the coordinates (0,0) is at location 0,0 (bottom left corner). I was wondering if you could change this to set the default location of 0,0 in the middle because I am making a graph and this would be much easier..... is this possible?

[Delos]

No, you can't change this. But, you can alter your code to make as if your centre is in the middle...

code:

var cX, cY : int % Centre x and y. cX := maxx div 2 cY := maxy div 2 % set them to centres. drawline (cX, cY, cX + 100, cY + 100, 7) % Draw a line from (0, 0) [by your new coords] to (100, 100).

[Mazer]

And if you don't want to be adding to the coordinates each time manually, you could make your own draw procedures that just call the regular ones.

eg:

code:

procedure myDrawFillBox(x1, y1, x2, y2, clr : int)     drawfillbox(x1 + 50, y1 + 50, x2 + 50, y2 + 50, clr) end myDrawFillBox

In this case, we're making the origin 50. You could change that to whatever you'd like (it'd probably be best to make that a constant so you could make changes easier).

[wtd]

Ack! All of those variables...

Records, people, records!

code:

type Point :    record       x, y : int := 0    end record var center, max : Point max.x := 80 max.y := 24 center.x = max.x div 2 center.y = max.y div 2

[SuperGenius]

Records might be a little confusing for a lot of people...I never learned them in gr. 10 myself.

[wtd]

SuperGenius wrote:

Records might be a little confusing for a lot of people...I never learned them in gr. 10 myself.

Everything's confusing the first time you see it. You just have to use them to get used to them.