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processing4/java/examples/Basics/Structure/SetupDraw/SetupDraw.pde
2011-08-05 18:26:51 +00:00

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/**
* Setup and Draw.
*
* The draw() function creates a structure in which
* to write programs that change with time.
*/
float y = 100;
// The statements in the setup() function
// execute once when the program begins
void setup() {
size(640, 360); // Size must be the first statement
stroke(255); // Set line drawing color to white
frameRate(30);
}
// The statements in draw() are executed until the
// program is stopped. Each statement is executed in
// sequence and after the last line is read, the first
// line is executed again.
void draw() {
background(0); // Set the background to black
y = y - 1;
if (y < 0) {
y = height;
}
line(0, y, width, y);
}