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Processing + Java Question (Read 603 times)

Robx

Processing + Java Question
Feb 4^th, 2010, 9:43pm

Hello, first post here.
I'm trying to port my processing project into Eclipse and combining it with java.awt. Since PApplet is extended from the Applet class and Applet + awt go well together, how is the draw() function in processing relates to the paint() function in awt?

For example I'd like to use the g.drawString() from awt within my draw() function. I know processing has it's own PFont, but I'd like to use the awt functions instead.

This is what I'm trying to add to draw():
Code:

public void paint(Graphics g) {
		//font centering vars
		g.setFont(font);
		FontMetrics fm=g.getFontMetrics(font);
		java.awt.geom.Rectangle2D rect[] = new java.awt.geom.Rectangle2D[line.length];
				
		//draw the text
		g.setColor(Color.black);
		for (int i=0; i<line.length; i++) {
			rect[i]=fm.getStringBounds(line[i],g);
			int textWidth=(int)(rect[i].getWidth());
			if (i==line.length-1) {
				g.drawString(line[i], (width-textWidth)/2, padding+(fSize*(i+1)));
			} else {
				g.drawString(line[i], (width-textWidth)/2, padding+(fSize*i));
			}
		}
	}

Any help would be appreciated thanks!

PhiLho

Re: Processing + Java Question
Reply #1 - Feb 5^th, 2010, 2:06am

I did that in the past, to get glyph information from TTF fonts.
There might be problems (conflicts of threads...) but basically drawing on sketch's surface with AWT functions is possible.
The idea is to have a Graphics2D g2; variable, then initialize it with Processing's g variable: g2 = ((PGraphicsJava2D) g).g2;
We can then do stuff like:
Code:

AffineTransform transform = new AffineTransform();
    transform.translate(40, 320);
    transform.scale(SCALE, SCALE);
	Shape vbs = glyphVector.getGlyphVisualBounds(i);
	g2.draw(transform.createTransformedShape(vbs));

	Rectangle r = glyphVector.getGlyphPixelBounds(i, null, 0.0f, 0.0f);
	g2.draw(transform.createTransformedShape(r));

and so on.

Robx YaBB Newbies Offline Posts: 2	Re: Processing + Java Question Reply #2 - Feb 5^th, 2010, 2:49pm Awesome, this is exactly what I was looking for! Thanks PhiLho.

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