Processing: Creative Coding and Computational Art

Obviously, PI is never going to change, and the complier will enforce this if you use the
static and final keywords in declaring it. If someone eventually tries to assign some
other value to PI, the compiler would generate an error and prevent them from doing it.
For the curious among you, the keyword double is the Java data type associated with PI.
The double data type is similar to the float type, except a double requires twice as much
storage as a float (8 bytes vs. 4 bytes), and also has greater precision (accuracy to 15 digits).
However, double precision is not really necessary for the types of things most people do
with Processing, so float was made the default primitive data type for any decimal values
in Processing.
Constructors
As mentioned before, constructors are methods with the same name as the class, automatically
invoked when an object is instantiated (created with the new keyword, as in new
BurritoRecipe()). In addition, the constructor returns a reference to the object created.
Thus, in the complete instantiation statement
BurritoRecipe myRecipe = new Burrito Recipe();
the variable myRecipe, declared of type BurritioRecipe, is assigned a reference to the
newly created BurritoRecipe object.
//3 constructors--default, basic, monster
//default burrito recipe constructor
BurritoRecipe (){
}
//regular burrito recipe constructor
BurritoRecipe (String tortillaFlavor, String beanType, ➥
String meatType){
//initialize properties
this.tortillaFlavor = tortillaFlavor;
this.beanType = beanType;
this.meatType = meatType;
}
//monster burrito recipe constructor(uuummmm)
BurritoRecipe (String tortillaFlavor, String beanType, ➥
String meatType, String[]toppings, ➥
int salsaTemperature){
//initialize properties
this.tortillaFlavor = tortillaFlavor;
this.beanType = beanType;
this.meatType = meatType;
this.toppings = toppings;
this.salsaTemperature = salsaTemperature;
}
OBJECT-ORIENTED PROGRAMMING
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