How do you move Polygons?

[Nyrd]

I'm making a 3-d type game using polygons. I came to a problem. I CAN'T MOVE ANY POLYGON !!!

It's not that i don't know how, we learned that in class, but i always get an error message such as "Compilation Time expected" (What does it mean anyway?) If you could help it would be much appreciated.

[Mr. Glib]

Nyrd,

when you mean 'move' do you mean erasing the polgyon image that you've drawn and then redrawing it somewhere else on the screen or are you refering to animation?

[Cervantes]

Posting the code that is giving you trouble (and any code related to it that you deem necessary [such as variable initialization]) will help us to help you.

[Tony]

your polygon should be in the form of

(p1x + x, p1y + y, p2x + x, p2y + y, ... pNx + x, pNy + y)

where p#x/p#y decribe verticies in relation to each other (as if the shape was centered at (0,0) and +x +y are offsets that actually move the shape around.

It's the same for 3D, you just also have the +z.

[Nyrd]

code:

It's the same for 3D, you just also have the +z.

Does this mean that turing has an inbuilt 3-D drawing function?
Cause the way I'm making it 3-D is by drawing one polygon, morphing it to the shape i want, then drawing another in a lighter/darker colour the fits with this one to make a 3-D illusion.

code:

var x : array 1 .. 9 of int := init (100, 100 , 135 ,             185 ,             220 , 200 , 137 , 55 , 5 )         var y : array 1 .. 9 of int := init (150 , 150 , 145 ,             185 ,             150 , 135 , 102 , 50 , 50 )           Draw.FillPolygon (x , y, 9 , grey)     var x1 : array 1 .. 5 of int := init (220, 200, 135, 135, 50)     var y1 : array 1 .. 5 of int := init (150, 120, 85, 65, 50)     Draw.FillPolygon (x1, y1, 5, darkgrey)

If there is another way please tell, cause this one takes a while to get to look right

[Tony]

are you trying to draw a single image that looks like 3D, or an actual 3D shape that you can rotate?

[Nyrd]

oh yeah, what i mean by move is that i make the polygon, erase it then draw it in another place. I use this cause it's the only way i know, how does the other work?

[Tony]

yeah, that's how you do that. I'm just wondering how you determine where to draw it in the next frame.