86 lines
3.4 KiB
Java
86 lines
3.4 KiB
Java
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package Trolleybus;
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import java.awt.*;
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import javax.swing.*;
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// Параметризованный класс для набора объектов DrawingBus
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public class BusesGenericCollection <T extends DrawingBus, U extends IMoveableObject> {
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private final int _pictureWidth;
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private final int _pictureHeight;
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private final int _placeSizeWidth = 150;
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private final int _placeSizeHeight = 95;
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private final SetGeneric<T> _collection;
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public BusesGenericCollection(int picWidth, int picHeight)
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{
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int width = picWidth / _placeSizeWidth; //width - кол-во помещаемых на PictureBox автобусов по горизонтали
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int height = picHeight / _placeSizeHeight; //height - кол-во помещаемых на PictureBox автобусов по вертикали
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_pictureWidth = picWidth;
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_pictureHeight = picHeight;
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_collection = new SetGeneric<T>(width * height); //width*height - кол-во мест на PictureBox для автобусов; размер массива
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}
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//На Java нельзя перегрузить операторы + и -, поэтому ниже обычные методы
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public int Add(T obj){
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if (obj == null) {
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return -1;
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}
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return _collection.Insert(obj);
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}
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public boolean Remove(int position) {
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T obj = _collection.Get(position);
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if (obj != null) {
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_collection.Remove(position);
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return true;
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}
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return false;
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}
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public U GetU(int pos){
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return (U)_collection.Get(pos).GetMoveableObject();
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}
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//Вывод всех объектов
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public void ShowBuses(JPanel panelToDraw) {
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Graphics gr = panelToDraw.getGraphics();
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//Очистка перед перерисовкой
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panelToDraw.paint(gr);
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DrawBackground(gr);
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DrawObjects(gr);
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}
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//Прорисовка фона (чёрных линий)
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private void DrawBackground(Graphics g) {
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Graphics2D g2d = (Graphics2D)g;
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g2d.setColor(Color.BLACK);
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//вертикальные линии
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for (int i = 0; i < _pictureWidth / _placeSizeWidth; i++)
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{
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g2d.drawLine(i * (_placeSizeWidth + 10), 0, i * (_placeSizeWidth + 10), (_pictureHeight / _placeSizeHeight) * (_placeSizeHeight + 10));
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}
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//горизонтальные линии
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for (int i = 0; i <= _pictureHeight / _placeSizeHeight; i++)
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{
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for (int j = 0; j < _pictureWidth / _placeSizeWidth; j++)
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{
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g2d.drawLine(j * (_placeSizeWidth + 10), i * (_placeSizeHeight + 10), j * (_placeSizeWidth + 10) + _placeSizeWidth / 2, i * (_placeSizeHeight + 10));
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}
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}
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}
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//Прорисовка объектов
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private void DrawObjects(Graphics g) {
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int i = 0;
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int j = _pictureWidth / _placeSizeWidth - 1;
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for (int k = 0; k < _collection.Count; k++)
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{
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DrawingBus bus = _collection.Get(k);
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if (bus != null)
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{
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bus.SetPosition(j * (_placeSizeWidth + 10) + 5, i * (_placeSizeHeight) + 10);
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bus.DrawTransport(g);
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}
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j--;
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//переход на новую строчку
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if (j < 0)
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{
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j = _pictureWidth / _placeSizeWidth - 1;
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i++;
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}
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}
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}
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}
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