problem with arc and key arrows

Programming Questions

lechu2105

problem with arc and key arrows

in Programming Questions • 11 months ago

hi i am new in procesing
I'm trying to do a very simple program with an arc
the arc is basically increase and decrease with the arrow keys
the problem is
when I click play the arc increases and you can see it increasing
but there is no decrease in the image

float x1= 270.0;
void setup() {
size(480, 420);

}
void draw() {
if (keyPressed && (key == CODED)) { // If it’s a coded key

if (keyCode == LEFT) { // If it’s the left arrow
x1--;
} else if (keyCode == RIGHT) { // If it’s the right arrow
x1++;
}
}

println(x1);
fill(102);
smooth();
arc(190, 60, 80, 80, radians(x1), TWO_PI);

}

Replies(1)

v.k.

Re: problem with arc and key arrows

11 months ago

The code is working fine, you can't see the arc getting smaller because it is hidden by the previous draw. You just need to clear the screen each frame. Add a background(0) (or any desired color), at the beginning of draw() and.. it's done ;) Also you don't need to call smooth() every frame, you can move it to setup.

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