procedures

[baby_bubblz]

hi i have a problem i'm having a lot of trouble with. if anyone could help it'll be great. thanks!

problem: make a procedure subprogram that creates a butterfly. It consists of 6 parameters: 2 for the bottom-left corner of the box where the butterfly is located in, 2 for the top right corner, 1 for the colour of the body, and 1 for the colour of its wings. however big or small the box is, the butterfly should always retain its shape.

[jamonathin]

What does the box do? And you mean something like this?

code:

procedure butterfly (x1,y1,x2,y2,flycol,wingcol:int) end butterfly

[baby_bubblz]

yeah, the box is just where the butterfly is in

[jamonathin]

Ok, but your question makes no sense. Are you supposed to draw a butterfly that flies around in a box? like this?

[baby_bubblz]

sorry about the confusion, no the butterfly doesn't fly and doesn't move. it's just an oval for the body, and 4 circles as wings. Whatever the user inputs as the coordinates of the box, the butterfly will always be in the box, whether the box is stretched or compress, the butterfly will stretch or compress as well.

[Cervantes]

On paper, draw a rectangle. Then draw the butterfly, inside that rectangle. Measure the lengths of the rectangle, then measure the lengths and positions of the various parts of the butterfly. Divide those measurements by the lengths of the sides of the rectangle, so that you get ratios. For example, the centre of the oval that is the wing is 0.5 up and has a radius (in the y) of 0.2. So it's centre would be half way up and it would be have a radius 1/5 of the height of the rectangle you're drawing it in.

Once you've got all your ratios, start to code it.
You'll probably have a local variable for the width of the rectangle and another for the height of the rectangle. Thats just x2 - x1 and y2 - y1.

Cervantes