scripts.chessboard.jfl Maven / Gradle / Ivy

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/*
 * An example Jiffle script: creates an 8 x 8 
 * chessboard pattern.
 *
 * Author: Michael Bedward
 */

// We declare variables that we want to remain in
// scope between pixels in the 'init' block
init {
    len = width() > height() ? width() : height();
    square = floor(len / 8);
    edge_pos = square * 8;
}

/* Calculations performed for each pixel
 * The functions x() and y() return current
 * pixel coordinates. '%' is the modulo
 * operator.
 */
odd_row = floor(y() / square) % 2 == 1;
odd_col = floor(x() / square) % 2 == 1;
inside = x() < edge_pos && y() < edge_pos;

/* The variable 'result' represents the
 * destination image (you can use any name
 * you like in your own scripts).
 * '^|' is Jiffle's exclusive-OR operator.
 */
result = inside ? (odd_row ^| odd_col) : null;