Processing 2. Креативное программирование

, 2D

pg = createGraphics( 64, 64, JAVA2D );

background( 255 ); imageMode( CENTER );

x = 0; y = 0;

}

, draw() - PGraphics. image(). -x y .

void draw()

{

pg.beginDraw(); pg.background( 255, 0, 0, 8 ); pg.smooth();

for ( int i = 0; i < 8; i++ ) { pg.stroke( random( 255 ), 0, 0 );

pg.line( random( pg.width ), random( pg.height ), random( pg.width ), random( pg.height ) );

}

pg.endDraw();

image( pg, x, y );

x += random( 4, 16 ); if ( x > width ) {

x = 0;

y += random( 32, 64 ); if ( y > height ) {

y = 0;

fill( 255, 32 ); noStroke();

rect( 0, 0, width, height );

}

}

}

mousePressed() .50 .

void mousePressed()

{

if ( random( 100 ) < 50 ) {

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background( 0 );

}else {

background( 255 );

}

}

- . ,.

createGraphics() , . - , ., - . ,P2D. PGraphics pg.beginDraw(). pg.endDraw(). , , .Processing,. , PGraphics,pg.line(), - pg.rect(). pg.width pg.height. , background() ., PGraphics.

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, 2D

, , , ,. , setup() PGraphics. PGraphics image(), .

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3

3D:

:

f3D

fpolygon soup

f2D 3D

f3D

2, , 2D,. 3D.

.

, -.

1, Processing 2,Processing. -.

3D:

, - OpenGL.. 2,, 2D.

Sketch | Import Library | OpenGL:

import processing.opengl.*;

, - setup(). , size(), 2.

float depth; float zSpeed;

void setup()

{

size( 640, 480, OPENGL );

depth = 0; zSpeed = -1;

}

draw() depth. 0 10000.

void draw()

{

depth += zSpeed;

if ( depth <= -1000 || depth >= 0 ) { zSpeed *= -1;

}

}

. -, .draw().

background( 255 );

noFill(); stroke( 0 );

for ( int i = 0; i < 10; i++ ) { pushMatrix();

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translate( 0, 0, -i * 100 ); rect( 0, 0, width, height ); popMatrix();

}

draw() ., . .

pushMatrix();

translate( 0, 0, depth ); fill( 255, 0, 0 );

rect( 0, 0, 80, 80 ); fill( 0, 255, 0 );

rect( width-80, 0, 80, 80 ); fill( 255, 255, 0 );

rect( width-80, height-80, 80, 80 ); fill( 0, 255, 255 );

rect( 0, height-80, 80, 80 ); popMatrix();

, .

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3D:

Processing size(), . OPENGL.OpenGL, .

, rect() ellipse()x y.z . -, translate().

translate() pushMatrix() popMatrix(),.

pushMatrix() .popMatrix(), , pushMatrix().

translate(), 3D, .x, y z , .depth z- translate(). : -(0, 0), , z.

3D

2D. Processing3D,. .

setup(). ,. OpenGL , -640 x 480 .OPENGL size().

draw(). pushMatrix(), popMatrix() translate() .rotateY(). box() sphere(). sphereDetail() .

background( 255 ); lights();

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3

float angleY = radians( frameCount );

pushMatrix();

translate( width * 0.3, height* 0.3 ); rotateY( angleY );

fill( 0, 255, 255 ); box( 100 ); popMatrix();

pushMatrix();

translate( width * 0.5, height* 0.5 ); rotateY( angleY );

fill( 0, 255, 0 ); box( 100, 40, 50 ); popMatrix();

pushMatrix();

translate( width * 0.7, height * 0.3 ); rotateY( angleY );

fill( 255, 0, 0 ); sphereDetail( 30 ); sphere( 75 ); popMatrix();

pushMatrix();

translate( width * 0.3, height * 0.7 ); rotateY( angleY );

fill( 255, 255, 0 ); sphereDetail( 6 ); sphere( 75 ); popMatrix();

pushMatrix();

translate( width * 0.7, height * 0.7 ); rotateY( angleY );

fill( 255, 0, 255 ); sphereDetail( 4, 20 ); sphere( 75 ); popMatrix();

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3D:

draw() . , :

box() , ., . ,.

sphere() : ., sphereDetail() sphere()., 30. -; - .,. , .

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draw() angleY.3D- Y.. frameCount 1 ., Processing.

, , . Processing . ,.

, , OpenGLOpenGL 640 x 480 . setup(), lightMode lightDirection,. setup() .

lightMode = 0; lightDirection = 0;

draw() . lightMode, lightDirection, .

background( 0 );

switch ( lightMode ) { case 0:

noLights();

break; case 1:

lights();

break; case 2:

if ( lightDirection == 0 ) {

directionalLight( 255, 128, 0, 0, -1, 0 ); // UP

}else if ( lightDirection == 1 ) { directionalLight( 0, 255, 0, 1, 0, 0 ); // RIGHT

}else if ( lightDirection == 2 ) { directionalLight( 255, 0, 255, 0, 1, 0 ); // DOWN

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