Lerc: Created page with "This is a very simple drawing program. Run it, draw some things, how could it be improved? * Try adding a key to clear the screen. * How could you change the pen thicknes..."

2012-03-14T21:25:37Z

Created page with "This is a very simple drawing program. Run it, draw some things, how could it be improved? * Try adding a key to clear the screen. * How could you change the pen thicknes..."

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This is a very simple drawing program. Run it, draw some things, how could it be improved?

* Try adding a key to clear the screen.
* How could you change the pen thickness?

<edcode>

print("draw with the arrow keys");
print("Change colour with the number keys");

var cx=320;
var cy=240;

var colour="black";

function move() {
if (keyIsDown(38)) cy-=1;
if (keyIsDown(40)) cy+=1;
if (keyIsDown(37)) cx-=1;
if (keyIsDown(39)) cx+=1;

if (keyIsDown(48)) colour="black";
if (keyIsDown(49)) colour="red";
if (keyIsDown(50)) colour="green";
if (keyIsDown(51)) colour="yellow";
if (keyIsDown(52)) colour="blue";
if (keyIsDown(53)) colour="magenta";
if (keyIsDown(54)) colour="cyan";
if (keyIsDown(55)) colour="white";
if (keyIsDown(56)) colour="orange";
if (keyIsDown(57)) colour="purple";

}

function draw() {
setColour(colour);
fillCircle(cx,cy,6);
}

run(move,draw);

</edcode>

DrawTrail - Revision history

Lerc: Created page with "This is a very simple drawing program. Run it, draw some things, how could it be improved? * Try adding a key to clear the screen. * How could you change the pen thicknes..."