Are you using 'getWorld().setBackground(canvas)'? or, do you still have a canvas object that is in the world?
darkmist255 wrote ...
2012/5/6
Need a little help with java.awt.Graphics
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Well I think that will have to work for now, redrawing every fifth cycle has lowered the CPU usage to about 90%, so it's running normal speed albeit fairly high CPU at this point.
@danpost I'm operating on the world image itself, but I can change it to do setBackground(canvas), that might work.
edit: Whohohoooa! Nevermind, setting the background to canvas makes it so that the images don't clear their old images on the screen before they update in the new position, then you get that old laggy window effect.
Alright I've got it working with no adverse effects on the CPU now, I just reduced the canvas size to 1 pixel wide since its only a single line, then it's not refreshing the entire world dimensions :D. I no longer need to have it redraw every fifth cycle. Thanks for all the help guys!
I'm really confused as to what you did or how you fixed it, but glad it is working now!
Basically the core part of what I did was I changed
to
That way it doesn't have a big resolution to calculate.
And my thought for the future is I'll make a class called canvas that will do nothing except for allow other classes to use Graphics draw() methods on it, that way I don't have many canvases.
1 | canvas = new GreenfootImage(getWorld().getWidth(), getWorld().getHeight()); |
1 | canvas = new GreenfootImage(1, getWorld().getHeight()); |
What is it you are using canvas for anyway? What are you trying to accomplish?
I use it for canvas.drawLine(), it's the image I'm drawing on to.
1 2 3 4 5 6 7 8 9 | import greenfoot.*;import java.awt.Color;getImage().clear();getImage().setColor(Color.WHITE);getImage().drawLine(0,0, 0,15);getImage().drawLine(15,0, 15,15);getImage().drawLine(0,0, 15,0);getImage().drawLine(15,15, 0,15); |
I think this is what he is using to draw a line:
1 2 3 4 | GreenfootImage canvas = new GreenfootImage(1, getWorld().getHeight()); canvas.setColor(Color.WHITE);canvas.fill();setImage(canvas); |
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