Processing 2. Креативное программирование

Android

, - USBUSB ., Android SDK . Processing .Run on Device Sketch, Processing.

Android , Android. , , , DPI . Android..

Junction, , The League of Moveable Type. http:// www.theleagueofmoveabletype.com/ junction.

Junction.otf Processing, .

Android DisplayMetrics, String,:

import android.util.DisplayMetrics;

String density;

String dpi;

String w;

String h;

PFont junction;

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10

setup() DisplayMetricsString. Junction 32:

void setup()

{

size( displayWidth, displayHeight ); smooth();

DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics( metrics );

density = "Density: " + metrics.density; dpi = "DPI: " + metrics.densityDpi;

w = "Width: " + width; h = "height: " + height;

junction = createFont( "Junction.otf", 32 );

textFont( junction, 32 );

println( PFont.list() );

}

draw() String :

void draw()

{

background( 255, 225, 23 ); fill( 0 );

textAlign( CENTER );

text( density, width/2, 300 ); text( dpi, width/2, 360 ); text( w, width/2, 420 ); text( h, width/2, 480 );

}

231

Android

, HTC desire , ., .

DisplayMetrics Android,. ,

DisplayMetrics :

DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics( metrics );

.

metrics.density;

metrics.densityDpi;

DisplayMetricshttp://developer.android.com/reference/android/util/ DisplayMetrics.html.

., , ., , .

232

10

setup() . -- , - .

boolean touching = false;

void setup()

{

size( displayWidth, displayHeight ); smooth();

background( 0 );

}

surfaceTouchevent(). , touching true:

public boolean surfaceTouchEvent( MotionEvent event )

{

if ( event.getAction() == 2 ) { touching = true;

}else {

touching = false;

}

return super.surfaceTouchEvent( event );

}

draw() mouseX, mouseY, pmouseX pmouseY , :

void draw()

{

if ( touching ) { stroke( 255, 128 ); noFill();

float d = dist( mouseX, mouseY, pmouseX, pmouseY ); float s = map( d, 0, 200, 1, 10 );

strokeWeight( s );

line( mouseX, mouseY, pmouseX, pmouseY ); fill( 255, 255, 0, 16 );

stroke( 0, 128 ); strokeWeight( 1 );

ellipse( mouseX, mouseY, motionPressure * 100, motionPressure * 100 );

}

}

233

Android

, ., :

Android , Standard.. .surfaceTouchEvent():

public boolean surfaceTouchEvent( MotionEvent event ) {}

MotionEvent. getAction() , . 2, :

if ( event.getAction() == 2 ) { touching = true;

}else {

touching = false;

}

234

10

, , ,super.surfaceTouchEvent():

return super.surfaceTouchEvent( event );

draw() motionPressure..

. Android. ,. surfaceTouchEvent()event.getPointerCount()., x y. :

public boolean surfaceTouchEvent( MotionEvent event )

{

int numTouches = event.getPointerCount();

for ( int i = 0; i < numTouches; i++ ) { int touchID = event.getPointerId( i ); float x = event.getX( i );

float y = event.getY( i ); float r = event.getSize( i );

}

return super.surfaceTouchEvent( event );

}

Android . -. ,, ..

accelerometer.pde. File | Examples, Sensors ., AccelerometerManager.java.. .

235

Android

setup():

AccelerometerManager acc; float ax;

float ay; float az; float r;

PVector loc; color bgcolor;

void setup()

{

acc = new AccelerometerManager( this );

size( displayWidth, displayHeight ); orientation( PORTRAIT );

smooth();

loc = new PVector( width/2, height/2 );

r = 40;

bgcolor = color( 255, 0, 0 );

}

accelerationEvent().. redraw() :

public void accelerationEvent( float x, float y, float z ) { ax = x;

ay = y; az = z; redraw();

}

236

10

draw() ax ay . , .

void draw()

{

float speedX = -(ax / 2); float speedY = ay / 2;

loc.x += speedX; loc.y += speedY;

if ( loc.x < r ) {

bgcolor = color( 255, 128, 0, 32 );

}

f ( loc.x > width - r ) {

bgcolor = color( 128, 255, 0, 32 );

}

if ( loc.y < r ) {

bgcolor = color( 0, 225, 255, 32 );

}

if ( loc.y > height - r ) {

bgcolor = color( 255, 0, 128, 32 );

}

loc.x = constrain( loc.x, r, width - r ); loc.y = constrain( loc.y, r, height - r );

fill( bgcolor );

rect( 0, 0, width, height );

fill( 255 ); noStroke();

ellipse( loc.x, loc.y, r*2, r*2 );

}

237

Android

. ,. ,:

- AccelerometerManager, Processing.accelerationEvent() -ax, ay az.

draw() .

ax, ,. ,, . -ax ay.

238

10

Android,Ketai. , , . Google Code: https://code.google.com/p/ketai/.

GPS

GPS. ,. .

Junction - The League of Moveable Type. : http://www.theleagueofmoveabletype.com/ junction. , Processing.

,:

import android.content.Context; import android.location.*; import android.os.Bundle;

LocationManager manager;

GPSLocationListener gps;

float latitude; float longitude; float accuracy; String provider;

PFont junction;

239