1 | package solarsim.renderer; |
---|
2 | |
---|
3 | import java.awt.Canvas; |
---|
4 | import java.awt.Graphics; |
---|
5 | import java.util.LinkedList; |
---|
6 | import solarsim.common.Particle; |
---|
7 | import solarsim.common.State; |
---|
8 | import solarsim.common.Vector; |
---|
9 | |
---|
10 | class MyCanvas extends Canvas { |
---|
11 | |
---|
12 | private final LinkedList<State> states; |
---|
13 | MyCanvas() { |
---|
14 | super(); |
---|
15 | this.setSize(800, 600); |
---|
16 | states = new LinkedList<State>(); |
---|
17 | } |
---|
18 | |
---|
19 | void drawState(State s) { |
---|
20 | synchronized( states ) { |
---|
21 | if( states.size() == RenderConstants.MAX_STATES ) { |
---|
22 | states.removeLast(); |
---|
23 | } |
---|
24 | states.addFirst(s); |
---|
25 | } |
---|
26 | this.repaint(); |
---|
27 | } |
---|
28 | |
---|
29 | @Override |
---|
30 | public void paint(Graphics g) { |
---|
31 | g.translate(400, 300); |
---|
32 | g.drawLine(-300, -300, 300, 300); |
---|
33 | g.drawLine(-300, 300, 300, -300); |
---|
34 | g.drawLine(-300, -300, -300, 300); |
---|
35 | g.drawLine(300, -300, 300, 300); |
---|
36 | g.drawLine(-400, 0, 400, 0); |
---|
37 | g.drawLine(0, -300, 0, 300); |
---|
38 | synchronized(states) { |
---|
39 | for( State s : states ) { |
---|
40 | for( Particle p : s.getParticles() ) { |
---|
41 | Vector r = p.getPosition(); |
---|
42 | int dx = +(int)(r.x/RenderConstants.SCALE_FACTOR*300); |
---|
43 | int dy = -(int)(r.y/RenderConstants.SCALE_FACTOR*300); |
---|
44 | g.translate(dx, dy); |
---|
45 | g.fillOval(-1, -1, 3, 3); |
---|
46 | g.translate(-dx, -dy); |
---|
47 | } |
---|
48 | } |
---|
49 | } |
---|
50 | g.translate(-400, -300); |
---|
51 | } |
---|
52 | |
---|
53 | } |
---|