Revision 511
added image buffering
| Colonet.java | ||
|---|---|---|
| 861 | 861 |
int BORDER = 16; // this is arbitrary. it makes the image look nice inside a border. |
| 862 | 862 |
int BOT_RADIUS = 40; |
| 863 | 863 |
volatile BufferedImage img; |
| 864 |
BufferedImage buffer; |
|
| 864 | 865 |
|
| 865 | 866 |
public WebcamPanel () {
|
| 866 | 867 |
super(); |
| 868 |
buffer = new BufferedImage(this.getWidth(), this.getHeight(), BufferedImage.TYPE_INT_RGB); |
|
| 867 | 869 |
} |
| 868 | 870 |
|
| 869 | 871 |
public synchronized void setImage (BufferedImage newimg) {
|
| ... | ... | |
| 874 | 876 |
img = newimg; |
| 875 | 877 |
repaint(); |
| 876 | 878 |
} |
| 877 |
|
|
| 878 | 879 |
|
| 879 | 880 |
public synchronized void paint (Graphics g) {
|
| 880 |
|
|
| 881 | 881 |
if (img == null) |
| 882 | 882 |
return; |
| 883 |
// Place the image on the screen, inside the panel |
|
| 884 | 883 |
|
| 884 |
// Calculate scaling |
|
| 885 | 885 |
int maxWidth = getWidth() - 2*BORDER; |
| 886 | 886 |
int maxHeight = getHeight() - 2*BORDER; |
| 887 | 887 |
double widthRatio = 1.0 * maxWidth / img.getWidth(); |
| ... | ... | |
| 906 | 906 |
y = (maxHeight - newHeight) / 2 + BORDER; |
| 907 | 907 |
} |
| 908 | 908 |
|
| 909 |
// Draw everything onto the buffer |
|
| 910 |
Graphics2D bufferedGraphics = (Graphics2D)buffer.getGraphics(); |
|
| 911 |
bufferedGraphics.setColor(Color.GRAY); |
|
| 912 |
bufferedGraphics.fillRect(0, 0, this.getWidth(), this.getHeight()); |
|
| 909 | 913 |
Image imgScaled = img.getScaledInstance(newWidth, newHeight, Image.SCALE_FAST); |
| 910 |
g.drawImage(imgScaled, x, y, this);
|
|
| 914 |
bufferedGraphics.drawImage(imgScaled, x, y, this);
|
|
| 911 | 915 |
|
| 912 | 916 |
|
| 913 | 917 |
// Draw Identifiers and battery levels |
| 914 | 918 |
if (robotIcons == null) |
| 915 | 919 |
return; |
| 916 | 920 |
|
| 917 |
((Graphics2D)g).setStroke(new BasicStroke(2));
|
|
| 921 |
bufferedGraphics.setStroke(new BasicStroke(2));
|
|
| 918 | 922 |
for (int i = 0; i < robotIcons.size(); i++) {
|
| 919 | 923 |
RobotIcon r = robotIcons.get(i); |
| 920 |
g.setColor(r.color);
|
|
| 924 |
bufferedGraphics.setColor(r.color);
|
|
| 921 | 925 |
// Identifier circle |
| 922 | 926 |
int px = (int) (x + r.x * scale); |
| 923 | 927 |
int py = (int) (y + r.y * scale); |
| 924 |
g.drawOval(px-RADIUS, py-RADIUS, 2*r.RADIUS, 2*r.RADIUS);
|
|
| 928 |
bufferedGraphics.drawOval(px-RADIUS, py-RADIUS, 2*r.RADIUS, 2*r.RADIUS);
|
|
| 925 | 929 |
// Battery |
| 926 | 930 |
//if (r.battery >= 0) {
|
| 927 |
g.setColor(Color.GREEN);
|
|
| 928 |
g.fillRect(px+20, py+20, 30, 10);
|
|
| 929 |
g.setColor(Color.BLACK);
|
|
| 930 |
g.drawRect(px+20, py+20, 50, 10);
|
|
| 931 |
bufferedGraphics.setColor(Color.GREEN);
|
|
| 932 |
bufferedGraphics.fillRect(px+20, py+20, 30, 10);
|
|
| 933 |
bufferedGraphics.setColor(Color.BLACK);
|
|
| 934 |
bufferedGraphics.drawRect(px+20, py+20, 50, 10);
|
|
| 931 | 935 |
//} |
| 932 | 936 |
// If the robot has a destination, draw the vector |
| 933 | 937 |
if (r.destx >= 0) {
|
| 934 |
g.drawLine(px, py, (int)(x + r.destx * scale), (int)(y + r.desty * scale));
|
|
| 938 |
bufferedGraphics.drawLine(px, py, (int)(x + r.destx * scale), (int)(y + r.desty * scale));
|
|
| 935 | 939 |
} |
| 936 | 940 |
} |
| 937 | 941 |
|
| 938 | 942 |
// Identify currently-selected robot |
| 939 | 943 |
if (selectedBot < 0) |
| 940 | 944 |
return; |
| 941 |
g.setColor(Color.BLACK);
|
|
| 945 |
bufferedGraphics.setColor(Color.BLACK);
|
|
| 942 | 946 |
RobotIcon r = robotIcons.get(selectedBot); |
| 943 | 947 |
int px = (int) (x + r.x * scale); |
| 944 | 948 |
int py = (int) (y + r.y * scale); |
| 945 |
g.drawOval(px-RADIUS-6, py-RADIUS-6, 2*r.RADIUS+12, 2*r.RADIUS+12); |
|
| 949 |
bufferedGraphics.drawOval(px-RADIUS-6, py-RADIUS-6, 2*r.RADIUS+12, 2*r.RADIUS+12); |
|
| 950 |
|
|
| 951 |
//Display buffered content |
|
| 952 |
g.drawImage(buffer, 0, 0, null); |
|
| 946 | 953 |
} |
| 947 | 954 |
|
| 948 | 955 |
} |
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