graphic-processing-site-examples-Basics-Control-LogicalOperators-LogicalOperators.pde / pde
Logical Operators. The logical operators for AND (&&) and OR (||) are used to combine simple relational statements into more complex expressions. The NOT (!) operator is used to negate a boolean statement.
size(200, 200);
background(126);
boolean op = false;
for(int i=5; i<=195; i+=5) {
// Logical AND
stroke(0);
if((i > 35) && (i < 100)) {
line(5, i, 95, i);
op = false;
}
// Logical OR
stroke(76);
if((i <= 35) || (i >= 100)) {
line(105, i, 195, i);
op = true;
}
// Testing if a boolean value is "true"
// The expression "if(op)" is equivalent to "if(op == true)"
if(op) {
stroke(0);
point(width/2, i);
}
// Testing if a boolean value is "false"
// The expression "if(!op)" is equivalent to "if(op == false)"
if(!op) {
stroke(255);
point(width/4, i);
}
}
(C) Æliens 20/2/2008
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