Week5-Processing Introduction

Week 5 Processing Introduction

Task 1 Make a basic processing code after watching the tutorials. I use 3d transform to build a small figure which can change its color and shape with the movement & click of the mouse.

Here is the code I wrote.

void setup()

{

size(500,400,P3D);

}

void draw()

{

int Z = mouseX/2 + mouseY/2;

int i;

background(0,138,120);

stroke(255);

fill(Z,mouseY, mouseX);

ellipse(mouseX,mouseY-150,100,100);

stroke(255);

fill(mouseX,mouseY,Z);

rect(mouseX-50,mouseY-100,100,200);

if(mousePressed)

{

for(i=0;i<300;i++)

{

translate(-i,i,-mouseY);

rect(mouseX-50,mouseY-100,100,200);

}

Here is the short video I filmed after I finished the code:

Task 2 Use photocell to control the led. In this task, I'm gonna use a photocell to control the brighness of the led. The photocell can etect the light brightness of the environment and then thansfer the light strength to the resistor of the sensor. I use the function analogRead() to get the range of number detected by the photocell(from 0 to 1023). And if the brightness(minLight in my code) is smaller than a certain amount(for example, 500 in my code), the led will be turned on(HIGH), else, the led will be turned off(LOW).

Here is the code I wrote.

int photocellPin = 2;

int photocellVal = 0; // photocell variable

int minLight = 500;

int ledPin = 9;

int ledState = 0;

void setup() {

pinMode(ledPin, OUTPUT);

Serial.begin(9600);

}

void loop() {

photocellVal = analogRead(photocellPin);

Serial.println(photocellVal);

if (photocellVal < minLight && ledState == 0) {

digitalWrite(ledPin, HIGH); // turn on LED

ledState = 1;

}

if (photocellVal > minLight && ledState == 1) {

digitalWrite(ledPin, LOW); // turn off LED

ledState = 0;

}

delay(100);

}

Here is the short video I filmed after I finished the code:

Task3-Dim-ON&OFF

Task4-Dim-Blinking Speed

Task5-Dim-Pushswitch