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[java] help!!!!! repaint() method

Started by himifire Aug 10, 2003 at 9:39 AM 1 replies 350+ views

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Aug 10, 2003 at 9:39 AM

in a case like the one i show below how do you use a repaint or paintimeddailty method?? theframe is a JFrame and ive tried with a canvas too. public static void UpdateBall() { boolean DO = false; while(!DO) { for(int x = 0; x < 1; x = x) Bx += Bxv; By += Byv; ballArea = new Rectangle(Bx, By, 5 + Bx, 5 + By); theframe.repaint(ballArea); g.setColor(Color.pink); g.drawOval(Bx, By, 5, 5); ballArea = new Rectangle(Bx, By, 5, 5);

tortoise

Aug 10, 2003 at 10:29 AM

there should be a repaint(Rectangle) though. Did you add it in your subclass?

What is the problem, it''s not repainting? The awt paint system is a passive painting system based on the OS''s repaint events. When you say repaint() that''s just a request to repaint, you can''t rely on it. In a game you almost always want active painting. Unless this is an applet or something, look into BufferStrategies and possibly the fullscreen api. That way you can ditch the awt paint system and paint exactly when you want to paint.

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