Initial Commit

This commit is contained in:
plane000
2018-04-20 10:15:15 +01:00
parent 49150ccfe4
commit 62101e8e61
2870 changed files with 520122 additions and 0 deletions

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/**
* Characters Strings.
*
* The character datatype, abbreviated as char, stores letters and
* symbols in the Unicode format, a coding system developed to support
* a variety of world languages. Characters are distinguished from other
* symbols by putting them between single quotes ('P').<br />
* <br />
* A string is a sequence of characters. A string is noted by surrounding
* a group of letters with double quotes ("Processing").
* Chars and strings are most often used with the keyboard methods,
* to display text to the screen, and to load images or files.<br />
* <br />
* The String datatype must be capitalized because it is a complex datatype.
* A String is actually a class with its own methods, some of which are
* featured below.
*/
char letter;
String words = "Begin...";
void setup() {
size(640, 360);
// Create the font
textFont(createFont("SourceCodePro-Regular.ttf", 36));
}
void draw() {
background(0); // Set background to black
// Draw the letter to the center of the screen
textSize(14);
text("Click on the program, then type to add to the String", 50, 50);
text("Current key: " + letter, 50, 70);
text("The String is " + words.length() + " characters long", 50, 90);
textSize(36);
text(words, 50, 120, 540, 300);
}
void keyTyped() {
// The variable "key" always contains the value
// of the most recent key pressed.
if ((key >= 'A' && key <= 'z') || key == ' ') {
letter = key;
words = words + key;
// Write the letter to the console
println(key);
}
}

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/**
* Datatype Conversion.
*
* It is sometimes beneficial to convert a value from one type of
* data to another. Each of the conversion functions converts its parameter
* to an equivalent representation within its datatype.
* The conversion functions include int(), float(), char(), byte(), and others.
*/
size(640, 360);
background(0);
noStroke();
textFont(createFont("SourceCodePro-Regular.ttf",24));
char c; // Chars are used for storing alphanumeric symbols
float f; // Floats are decimal numbers
int i; // Integers are values between 2,147,483,647 and -2147483648
byte b; // Bytes are values between -128 and 128
c = 'A';
f = float(c); // Sets f = 65.0
i = int(f * 1.4); // Sets i to 91
b = byte(c / 2); // Sets b to 32
//println(f);
//println(i);
//println(b);
text("The value of variable c is " + c, 50, 100);
text("The value of variable f is " + f, 50, 150);
text("The value of variable i is " + i, 50, 200);
text("The value of variable b is " + b, 50, 250);

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/**
* Integers Floats.
*
* Integers and floats are two different kinds of numerical data.
* An integer (more commonly called an int) is a number without
* a decimal point. A float is a floating-point number, which means
* it is a number that has a decimal place. Floats are used when
* more precision is needed.
*/
int a = 0; // Create a variable "a" of the datatype "int"
float b = 0.0; // Create a variable "b" of the datatype "float"
void setup() {
size(640, 360);
stroke(255);
}
void draw() {
background(0);
a = a + 1;
b = b + 0.2;
line(a, 0, a, height/2);
line(b, height/2, b, height);
if(a > width) {
a = 0;
}
if(b > width) {
b = 0;
}
}

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/**
* True/False.
*
* A Boolean variable has only two possible values: true or false.
* It is common to use Booleans with control statements to
* determine the flow of a program. In this example, when the
* boolean value "x" is true, vertical black lines are drawn and when
* the boolean value "x" is false, horizontal gray lines are drawn.
*/
boolean b = false;
size(640, 360);
background(0);
stroke(255);
int d = 20;
int middle = width/2;
for (int i = d; i <= width; i += d) {
if (i < middle) {
b = true;
} else {
b = false;
}
if (b == true) {
// Vertical line
line(i, d, i, height-d);
}
if (b == false) {
// Horizontal line
line(middle, i - middle + d, width-d, i - middle + d);
}
}

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/**
* Variable Scope.
*
* Variables have a global or local "scope".
* For example, variables declared within either the
* setup() or draw() functions may be only used in these
* functions. Global variables, variables declared outside
* of setup() and draw(), may be used anywhere within the program.
* If a local variable is declared with the same name as a
* global variable, the program will use the local variable to make
* its calculations within the current scope. Variables are localized
* within each block, the space between a { and }.
*/
int a = 80; // Create a global variable "a"
void setup() {
size(640, 360);
background(0);
stroke(255);
noLoop();
}
void draw() {
// Draw a line using the global variable "a"
line(a, 0, a, height);
// Create a new variable "a" local to the for() statement
for (int a = 120; a < 200; a += 2) {
line(a, 0, a, height);
}
// Create a new variable "a" local to the draw() function
int a = 300;
// Draw a line using the new local variable "a"
line(a, 0, a, height);
// Make a call to the custom function drawAnotherLine()
drawAnotherLine();
// Make a call to the custom function setYetAnotherLine()
drawYetAnotherLine();
}
void drawAnotherLine() {
// Create a new variable "a" local to this method
int a = 320;
// Draw a line using the local variable "a"
line(a, 0, a, height);
}
void drawYetAnotherLine() {
// Because no new local variable "a" is set,
// this line draws using the original global
// variable "a", which is set to the value 80.
line(a+2, 0, a+2, height);
}

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/**
* Variables.
*
* Variables are used for storing values. In this example, change
* the values of variables to affect the composition.
*/
size(640, 360);
background(0);
stroke(153);
strokeWeight(4);
strokeCap(SQUARE);
int a = 50;
int b = 120;
int c = 180;
line(a, b, a+c, b);
line(a, b+10, a+c, b+10);
line(a, b+20, a+c, b+20);
line(a, b+30, a+c, b+30);
a = a + c;
b = height-b;
line(a, b, a+c, b);
line(a, b+10, a+c, b+10);
line(a, b+20, a+c, b+20);
line(a, b+30, a+c, b+30);
a = a + c;
b = height-b;
line(a, b, a+c, b);
line(a, b+10, a+c, b+10);
line(a, b+20, a+c, b+20);
line(a, b+30, a+c, b+30);