}
}
public class MapOverlayMIDP extends MapDemoMIDP {
OverLayMapLayer mapLayer;
public void startApp() {
init();
GeoLatLng center = new GeoLatLng(32.0616667, 118.7777778);
map.setCenter(center, 9, MapType.GOOGLECHINA);
Display.getDisplay(this).setCurrent(canvas);
mapLayer = new OverLayMapLayer(canvas.getWidth(),
canvas.getHeight());
map.addMapLayer(mapLayer);
}
class OverLayMapLayer extends MapLayer {
GeoLatLng pt1 = new GeoLatLng(32.345281, 118.84261);
GeoLatLng pt2 = new GeoLatLng(32.05899, 118.62789);
GeoLatLng pt3 = new GeoLatLng(32.011811, 118.798656);
public OverLayMapLayer(int width, int height) {
super(width, height);
}
public void paint(IGraphics graphics, int offsetX, int offsetY) {
drawCursor(graphics);
drawTriangle(graphics);
drawPoint(graphics, pt1);
drawPoint(graphics, pt2);
drawPoint(graphics, pt3);
}
public void drawTriangle(IGraphics g) {
GeoPoint ptOnScreen1 = map.fromLatLngToScreenPixel(pt1);
GeoPoint ptOnScreen3 = map.fromLatLngToScreenPixel(pt3);
g.setColor(0x0000FF);
g.drawLine((int) ptOnScreen1.x, (int) ptOnScreen1.y,
(int) ptOnScreen2.x, (int) ptOnScreen2.y);
g.drawLine((int) ptOnScreen2.x, (int) ptOnScreen2.y,
(int) ptOnScreen3.x, (int) ptOnScreen3.y);
g.drawLine((int) ptOnScreen1.x, (int) ptOnScreen1.y,
(int) ptOnScreen3.x, (int) ptOnScreen3.y);
}
public void drawPoint(IGraphics g, GeoLatLng pt) {
GeoPoint ptOnScreen = map.fromLatLngToScreenPixel(pt);
int x = (int) ptOnScreen.x;
int y = (int) ptOnScreen.y;
g.setColor(0x00FF00);
g.fillRect(x - 4, y - 4, 8, 8);
}
private void drawCursor(IGraphics g) {
int x = getScreenWidth() / 2;
int y = getScreenHeight() / 2;
g.setColor(0x205020);
g.drawRect(x - 4, y - 4, 8, 8);
g.drawLine(x, y - 6, x, y - 2);
g.drawLine(x, y + 6, x, y + 2);
g.drawLine(x - 6, y, x - 2, y);
g.drawLine(x + 6, y, x + 2, y);
}
}
} www.2cto.com
作者：mapdigit