尝试使用循环绘制多个花

时间:2013-11-18 19:02:05

标签: java swing drawing

这是我必须为我的编程课做的一个项目...而且我正在努力学习它,所以我希望有人可以帮助我,或者至少指出我正确的方向:)

该项目的要求是(翻译自荷兰语):

  1. 1个固定的绘制对象 - 花盆。

  2. 根据文本框中给出的“总计”重复多次的对象。在花盆中种植这些花。(一朵花至少有茎和花)

  3. 最少1个文本框,其中输入总数(类型为int)。此总数代表必须绘制的花的总数。通过循环执行此操作。

  4. 为花的颜色制作一个文本框,并添加红色,黄色,橙色和其他一些颜色。随着颜色的每次修改,花朵都会变色。列表框会更好。

  5. 按一下按钮,花蕾的大小翻倍,另一个按钮将花朵恢复到初始大小。

  6. 最少一个或多个文本框,其中可以给出对象的大小以及总数。对象之间的距离取决于给定的大小。这些对象可以是任何ex。喷壶,一杯水,迷你农民...让你的幻想工作。

  7. 为每个绘制的对象添加注释。有了这个,你就可以说出究竟是什么了。

  8. 还可以使用图像。

  9. 到目前为止,我已经设法绘制了一朵花,并且我已经让我的循环工作或多或少......但是这些位置搞得一团糟。我正在使用Netbeans。以下是我面板中的代码:

        package Versie4;
    import java.awt.Graphics;
    import java.awt.Color;
    
    public class PanelFlowers extends javax.swing.JPanel {
    
        private int amount;
    
        public PanelFlowers() {
            initComponents();
            repaint();
        }
    
        public void paintComponent(Graphics g){
            super.paintComponent(g);
    
            int teller;
    
            g.setColor(Color.RED);  //flowerpot
            g.fillRect(300, 350, 500, 100);
    
            for (teller=1; teller <= amount ;teller++) { 
    
                //Flower 1
            g.setColor(Color.GREEN);  //stem
            g.fillRect(320 * teller, 250, 10, 100);
    
    
            g.setColor(Color.PINK); //petals
            g.fillOval(304 * teller, 190, 40, 40);
            g.fillOval(330 * teller, 210, 40, 40);
            g.fillOval(320 * teller, 240, 40, 40);
            g.fillOval(290 * teller, 240, 40, 40);
            g.fillOval(280 * teller, 210, 40, 40);
    
            g.setColor(Color.YELLOW);  //pistil
            g.fillOval(312 * teller, 225, 25, 25);
    
    
    
    
            }
    
    
        }
    
    
        @SuppressWarnings("unchecked")
        // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
        private void initComponents() {
    
            lblamount = new javax.swing.JLabel();
            txtamount = new javax.swing.JTextField();
            lblcolor = new javax.swing.JLabel();
            txtcolor = new javax.swing.JTextField();
            btngrow = new javax.swing.JButton();
            btnreset = new javax.swing.JButton();
    
            lblamount.setText("Amount: ");
    
            txtamount.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    txtamountActionPerformed(evt);
                }
            });
    
            lblcolor.setText("Color: ");
    
            btngrow.setText("Grow!");
    
            btnreset.setText("Reset Size");
    
            javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
            this.setLayout(layout);
            layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addComponent(lblamount)
                    .addGap(18, 18, 18)
                    .addComponent(txtamount, javax.swing.GroupLayout.PREFERRED_SIZE, 57, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(41, 41, 41)
                    .addComponent(lblcolor)
                    .addGap(18, 18, 18)
                    .addComponent(txtcolor, javax.swing.GroupLayout.PREFERRED_SIZE, 59, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addGap(60, 60, 60)
                    .addComponent(btngrow)
                    .addGap(18, 18, 18)
                    .addComponent(btnreset)
                    .addContainerGap(230, Short.MAX_VALUE))
            );
            layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGroup(layout.createSequentialGroup()
                    .addContainerGap()
                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(lblamount)
                        .addComponent(txtamount, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(lblcolor)
                        .addComponent(txtcolor, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addComponent(btngrow)
                        .addComponent(btnreset))
                    .addContainerGap(412, Short.MAX_VALUE))
            );
        }// </editor-fold>                        
    
        private void txtamountActionPerformed(java.awt.event.ActionEvent evt) {                                          
    amount = Integer.parseInt(txtamount.getText());
    repaint();
        }                                         
    
        // Variables declaration - do not modify                     
        private javax.swing.JButton btngrow;
        private javax.swing.JButton btnreset;
        private javax.swing.JLabel lblamount;
        private javax.swing.JLabel lblcolor;
        private javax.swing.JTextField txtamount;
        private javax.swing.JTextField txtcolor;
        // End of variables declaration                   
    }
    

    以下是框架:

    package Versie4;
    
    
    public class FrameFlowers extends javax.swing.JFrame {
    
    
        public FrameFlowers() {
            initComponents();
            setSize(900, 600);
            setContentPane(new PanelFlowers());
        }
    
    
        @SuppressWarnings("unchecked")
        // <editor-fold defaultstate="collapsed" desc="Generated Code">                          
        private void initComponents() {
    
            setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
    
            javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
            getContentPane().setLayout(layout);
            layout.setHorizontalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGap(0, 400, Short.MAX_VALUE)
            );
            layout.setVerticalGroup(
                layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                .addGap(0, 300, Short.MAX_VALUE)
            );
    
            pack();
        }// </editor-fold>                        
    
        /**
         * @param args the command line arguments
         */
        public static void main(String args[]) {
            /* Set the Nimbus look and feel */
            //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
            /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
             * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html 
             */
            try {
                for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
                    if ("Nimbus".equals(info.getName())) {
                        javax.swing.UIManager.setLookAndFeel(info.getClassName());
                        break;
                    }
                }
            } catch (ClassNotFoundException ex) {
                java.util.logging.Logger.getLogger(FrameFlowers.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            } catch (InstantiationException ex) {
                java.util.logging.Logger.getLogger(FrameFlowers.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            } catch (IllegalAccessException ex) {
                java.util.logging.Logger.getLogger(FrameFlowers.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            } catch (javax.swing.UnsupportedLookAndFeelException ex) {
                java.util.logging.Logger.getLogger(FrameFlowers.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
            }
            //</editor-fold>
    
            /* Create and display the form */
            java.awt.EventQueue.invokeLater(new Runnable() {
                public void run() {
                    new FrameFlowers().setVisible(true);
                }
            });
        }
        // Variables declaration - do not modify                     
        // End of variables declaration                   
    }
    

1 个答案:

答案 0 :(得分:1)

  1. 当你试图水平移动花的位置时,你试图成倍增加。你的想法是最正确的。但是将相同的整数乘以不同的petals将不会产生相同的移位量。而是让我们使用一个变量 delta x,它将移动花朵,包括带有我们定义的delta x的花瓣。然而,我们将teller乘以delta,然后将其添加到椭圆的x坐标中,以确保所有花瓣x坐标相对均匀地移动。

    public void paintComponent(Graphics g){
        super.paintComponent(g);
    
        int teller;
    
        g.setColor(Color.RED);  //flowerpot
        g.fillRect(300, 350, 500, 100);
    
    
        int x = 1;
        for (teller=1; teller <= amount ;teller++) { 
    
            //Flower 1
        g.setColor(Color.GREEN);  //stem
        g.fillRect(320 + x, 250, 10, 100);
    
    
        g.setColor(Color.PINK); //petals
        g.fillOval(304 + x, 190, 40, 40);
        g.fillOval(330 + x, 210, 40, 40);
        g.fillOval(320 + x, 240, 40, 40);
        g.fillOval(290 + x, 240, 40, 40);
        g.fillOval(280 + x, 210, 40, 40);
    
        g.setColor(Color.YELLOW);  //pistil
        g.fillOval(312 + x, 225, 25, 25);
    
         x = teller * 80;  
              //<---- here we are multiplying with the teller a fixed amount 
    
    
        }
    
    
    }
    

    在这里,用你的一个调整上面的代码,然后大饱眼福。

  2. 尝试learn layout managers,而不是依赖于NetBean的免费设计支持。有很好的布局可以帮助我们合作。他们最终会让你开心。