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Index › Programming Questions & Help › Programs › a little help please

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a little help please (Read 768 times)

Robert

a little help please
May 8^th, 2010, 12:29pm

I'm trying to learn processing and it's driving me crazy. I want to draw on a rectangle, exclude anything drawn outside (on the background) and save the result. should be easy...it isn't.
I've tried to check the pixel color and change the stroke color, I've tried to draw to an image buffer and copy that to the canvas....I'm just stuck. any help would be appreciated

Quote:

PImage img;
void setup(){
  size( 200, 250);
  background(125);
  smooth();
  strokeWeight(5);
   rectMode(CENTER);
    img = createImage(102, 150, ARGB);
  for(int i=0; i < img.pixels.length; i++) {
    img.pixels[i] = color(200, 90, 102);}

noStroke();
rect(width/2,height/2,100,150);
ellipseMode(CENTER);
stroke(0);
strokeWeight(4);
fill(125);
ellipse(width/2,height/5.25,15,15);
image(img,width/2-52,height/2-75);
}
void draw(){

  stroke(0);
  if(mousePressed) {
    line(mouseX, mouseY, pmouseX, pmouseY);
  }
}

void keyPressed() {
    save("line.tif");
  }

PhiLho

Re: a little help please
Reply #1 - May 8^th, 2010, 12:44pm

Code:

PGraphics img;
int imgPosX, imgPosY;

void setup(){
  size( 200, 250);
  background(125);
  smooth();
  strokeWeight(5);
  rectMode(CENTER);
  img = createGraphics(102, 150, JAVA2D);
  img.beginDraw();
  img.fill(200, 90, 102);
  img.rect(0, 0, img.width, img.height);
  img.endDraw();
  
noStroke();
rect(width/2,height/2,100,150);
ellipseMode(CENTER);
stroke(0);
strokeWeight(4);
fill(125);
ellipse(width/2,height/5.25,15,15);
imgPosX = width/2-52;
imgPosY = height/2-75;
image(img, imgPosX, imgPosY);
}
void draw(){
  
  stroke(0);
  if(mousePressed) {
    img.beginDraw();
    img.strokeWeight(4);
    img.fill(125);
    img.line(mouseX-imgPosX, mouseY-imgPosY, pmouseX-imgPosX, pmouseY-imgPosY);
    img.endDraw();
image(img, imgPosX, imgPosY);
  }
}

void keyPressed() {
    img.save("line.tif");
  }

Please, use more descriptive subject lines. Thanks.

Robert YaBB Newbies Offline Posts: 33	Re: a little help please Reply #2 - May 8^th, 2010, 3:00pm you rock....thank you very much

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