Computer Science Canada

Drawfill

Author:

jolly50 [ Sat Nov 03, 2007 6:33 am ]

Post subject:

Drawfill

Hey,

I'm trying to learn about drawfill. So I printed a house and i'm trying to fill the house with colors, my problem is that i cannot fill the roof where I used lines instead of boxes.

So here is my code:

code:

setscreen ("graphics")

% The House Foundation
drawbox (250,250,350,100,2)
drawfill (275,200,2,2)

% The House Roof
drawline (250,250,300,310,2)
drawline (300,310,350,250,2)

% The House Door
drawbox (280,100,310,150,2)

% The House Windows
drawbox (275,200,295,225,2)
drawbox (315,200,335,225,2)

% The House Chimney
drawline (325,281,325,291,2)
drawline (335,291,335,267,2)
drawline (325,291,335,291,2)
%Smoke
drawline (328,293,328,303,2)
drawline (332,305,332,315,2)
drawline (329,316,329,326,2)

Should I keep the lines or is there another way to draw a triangle?

Author:

HeavenAgain [ Sat Nov 03, 2007 11:33 am ]

Post subject:

RE:Drawfill

theres something called drawfillbox, you can look that up, it bascially just ... draw and fill the box

code:

setscreen ("graphics")

% The House Foundation
drawfillbox (250,250,350,100,2)

% The House Roof
drawline (250,250,300,310,2)
drawline (300,310,350,250,2)

% The House Door
drawbox (280,100,310,150,2)

% The House Windows
drawbox (275,200,295,225,2)
drawbox (315,200,335,225,2)

% The House Chimney
drawline (325,281,325,291,2)
drawline (335,291,335,267,2)
drawline (325,291,335,291,2)
drawfill (275,275,1,2)
%Smoke
drawline (328,293,328,303,2)
drawline (332,305,332,315,2)
drawline (329,316,329,326,2)

Author:	CodeMonkey2000 [ Sat Nov 03, 2007 11:38 am ]
Post subject:	RE:Drawfill
Is this an assignment or are you doing this for fun? I remember way back in grade 9 we had to draw animate a stupid clown winking using turing's draw module. What the hell does that have to do with proper programming concepts? It's just pointless.

Author:	Supernal [ Sat Nov 03, 2007 11:40 am ]
Post subject:	RE:Drawfill
I had to do this exact same project in Grd. 9. As well as a space ship blasting off, then we finally started with simple calculators and stuff.

Author:

jolly50 [ Sat Nov 03, 2007 12:30 pm ]

Post subject:

RE:Drawfill

ok I'm trying to fill the chimney and make it red, but somethings wrong......

code:

setscreen ("graphics")

% The House Foundation
drawfillbox (250,250,350,100,2)

% The House Roof
drawline (250,250,300,310,2)
drawline (300,310,350,250,2)
drawfill (275,275,yellow,2)

% The House Door
drawfillbox (280,100,310,150,6)

% The House Windows
drawfillbox (275,200,295,225,6)
drawfillbox (315,200,335,225,6)

% The House Chimney
drawline (325,281,325,291,2)
drawline (335,291,335,267,2)
drawline (325,291,335,291,2)
drawfill (330,286,4,7)
%Smoke
drawline (328,293,328,303,8)
drawline (332,305,332,315,8)
drawline (329,316,329,326,8)

what am i doing wrong

Author:	CodeMonkey2000 [ Sat Nov 03, 2007 12:36 pm ]
Post subject:	RE:Drawfill
Use the drawfillpolygon procedure.

Author:	jolly50 [ Sat Nov 03, 2007 1:20 pm ]
Post subject:	RE:Drawfill
can you put down an example of a drawfillpolygon because the help menu doesnt really help me

Author:

CodeMonkey2000 [ Sat Nov 03, 2007 3:04 pm ]

Post subject:

Re: Drawfill

Basically you have two parallel arrays with the same dimensions. The first array contains all your x coordinates, the second contains the y. So X(1) and Y(1) together make one coordinate. Now you pass these in to drawfillpolygon, then you pass in how many sides your polygon has (this is generally equivalent to the upper bounds of the arrays). For you it's:

code:

var x : array 1 .. 4 of int := init (325, 325, 335, 335)
var y : array 1 .. 4 of int := init (281, 291, 291, 267)
Draw.FillPolygon (x, y, 4, brightblue)

Author:	jolly50 [ Sat Nov 03, 2007 8:49 pm ]
Post subject:	RE:Drawfill
ok... that makes more sense then the help menu... thanks

Author:

Clayton [ Sun Nov 04, 2007 9:04 am ]

Post subject:

RE:Drawfill

The arrays don't necessarily have to be parrallel Wink

Turing:

var pentagon :
record
x : array 1 .. 5 of int
y : array 1 .. 5 of int
end record

//assign variables

Draw.FillPolygon (pentagon.x, pentagon.y, upper (pentagon.x), red)

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