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Why is this not efficient? * solved *

[5 Replies]
- 14-Nov-2012 01:01 PM
- Forum: Programming Questions
Hi all,

I'm trying to get my head around this text-based programming.. why can't it be like max where everything seems to be running side-by-side and living it's own happy life ;)

anyway - i have written a small sketch, trying to learn about OOP.

Whenever you press a key, some circles appear - but on my computer, it takes around 5 - 7 seconds from keyPressed() until I see the circles, and I don't seem to understand why - can you maybe give me a pointer?

(i use the java.util* but I guess this is still the forum, since it is native in processing?)

hope you have the time :)

Lasse

code:

import java.util.*; // Import Java library

NoteCircle[] noteCircle; // declare NoteCircleArray

int patternLength = 16;

int getRingCount = 5;

int currentActiveCircles = 0;

void setup() {

size(600, 600);

smooth(); // anti-aliasing

frameRate(60);

noteCircle = new NoteCircle[patternLength]; //



}

void draw() {

background(0);



for(int i = 0; i < currentActiveCircles; i++) {

noteCircle[i].update();

noteCircle[i].display();



}

}

void keyPressed() {

noteCircle[currentActiveCircles++] = new NoteCircle(getRingCount, currentActiveCircles);



}

class NoteCircle {



color[] palette = {#666666, #607F9C, #E9CCAE, #FFFFF3, #D01312}; // USED MINARD

Integer[] strokeColor = new Integer[palette.length];

float x; // circle x-pos

float y; // circle y-pos

float d; // circle diameter



float angleStart;

float angleMid;

float angleEnd;



float speed;



int ringCount;

int currentActiveCircles;

float strokeAlpha;



// create the CONSTRUCTOR

NoteCircle(int ringCountTemp, int currentActiveCirclesTemp) {



// fill strokeColor with the index numbers of palette. Shuffle strokeColor //

//

for (int i = 0; i < strokeColor.length; i++) { //

strokeColor[i] = i; //

//

} //

//

Collections.shuffle(Arrays.asList(strokeColor)); //

//

// finish shuffling ------------------------------------------------------ //

ringCount = ringCountTemp;



speed = random(.005, .05);

x = random(100, 500);

y = random(100, 500);

angleStart = 0;

angleMid = 0;

angleEnd = PI*2;

}

void update() {

angleMid += speed; // slowly move around. angleMid is = 0, but slowly adds on by speed.

angleMid = constrain(angleMid, 0, angleEnd);



if(angleMid >= 2*PI) {

angleMid = 0;



strokeAlpha = 255; // -(angleMid*40.6); // sets the stroke alpha

}

}

void display() {



strokeWeight(20);

noFill();



for(int i = 1; i < ringCount; i++) { // create ringCount numbers of arcs

// Randomize the stroke's colors

int getPalette; // I have a randomized list of the palette.length index numbers

int getStrokeColor;

getStrokeColor = i; // instead of using the index i, I assign i the corresponding random index

getPalette = strokeColor[getStrokeColor]; // from strokeColor.

stroke(palette[getPalette], strokeAlpha); // I get the random palette, using the index from strokeColor

d = (50*i)+50;



arc(x, y, d, d, angleMid-1, angleMid);



}

}

}

placing an image in front of a canvas.draw();

[6 Replies]
- 10-Nov-2012 06:40 AM
- Forum: Contributed Library Questions
Hi All,

Sorry - i'm really new to processing. I have a problem. I want to place an image in front of a canvas that are routed to syphon.

Even though my picture is rendered as the very last thing, the canvas.line() is rendered in front of it.. I've tried moving the image using beginShape() and moving the vertex, but I can't seem to figure out how the vertex really works..

If you change the "public float strokecolor", you can see the lines changing colors, and my picture is behind them.

this is my code:

import codeanticode.syphon.*;

import oscP5.*;

import netP5.*;

//OSC

OscP5 oscP5;

NetAddress myBroadcastLocation;

float factor;

// syphon

PGraphics canvas;

SyphonServer server;

// Images

PImage scLogo;

// Variables

int n = 300;

int[] a = new int[n];

/*----------------------------CHANGE THIS ------------------ */

public float strokecolor = 255;

/*----------------------------!CHANGE THIS ------------------ */

void setup() {

size(800,800, P3D);

canvas = createGraphics(800, 800, P3D);



frameRate(50);



// Initialize OSC

oscP5 = new OscP5(this, 5001);

myBroadcastLocation = new NetAddress("127.0.0.1", 5000);





// Create syhpon server to send frames out.

server = new SyphonServer(this, "Processing Syphon");





// Load images

scLogo = loadImage("SCLOGO1.png");



}

void draw() {

canvas.beginDraw();

canvas.smooth();

canvas.background(127);

canvas.lights();



for(int i = 0; i < n; i++) { // tegn 500 streger

canvas.image(scLogo, 200, 200);

float x1 = 0;

float x2 = 0;

float y1 = 0;

float y2 = 0;

float transperancy = random(0, 200); // calculates an alpha value

float weight = random(0, 1);

x1 = random(50, width-50);

y1 = random(50, height-50);

x2 = random(50, width-50);

y2 = random(50, height-50);

canvas.stroke(strokecolor, transperancy);

canvas.strokeWeight(30);

canvas.line(x1, y1, 0, x2, y2, 0); // draws a line with the coordinates from the array



}



canvas.image(scLogo, 200, 200);

canvas.endDraw();

image(canvas, 0, 0);



server.sendImage(canvas);

}

void oscEvent(OscMessage theOscMessage) {

strokecolor = theOscMessage.get(0).floatValue();

}

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