Examples of java.awt.Graphics2D.draw()

java.awt.Graphics2D.draw()
Strokes the outline of a Shape using the settings of the current Graphics2D context. The rendering attributes applied include the Clip, Transform, Paint, Composite and Stroke attributes. @param s the Shape to be rendered @see #setStroke @see #setPaint @see java.awt.Graphics#setColor @see #transform @see #setTransform @see #clip @see #setClip @see #setComposite

          g2D.translate(getWidth() / 2, getHeight() / 2);
          g2D.scale(getWidth() / 2, getWidth() / 2);
          g2D.rotate(Math.toRadians(controller.getNorthDirectionInDegrees()));
          // Draw a round arc
          g2D.setStroke(new BasicStroke(0.5f / getWidth()));
          g2D.draw(new Ellipse2D.Float(-0.7f, -0.7f, 1.4f, 1.4f));
          g2D.draw(new Line2D.Float(-0.85f, 0, -0.7f, 0));
          g2D.draw(new Line2D.Float(0.85f, 0, 0.7f, 0));
          g2D.draw(new Line2D.Float(0, -0.8f, 0, -0.7f));
          g2D.draw(new Line2D.Float(0, 0.85f, 0, 0.7f));
          // Draw a N

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          g2D.scale(getWidth() / 2, getWidth() / 2);
          g2D.rotate(Math.toRadians(controller.getNorthDirectionInDegrees()));
          // Draw a round arc
          g2D.setStroke(new BasicStroke(0.5f / getWidth()));
          g2D.draw(new Ellipse2D.Float(-0.7f, -0.7f, 1.4f, 1.4f));
          g2D.draw(new Line2D.Float(-0.85f, 0, -0.7f, 0));
          g2D.draw(new Line2D.Float(0.85f, 0, 0.7f, 0));
          g2D.draw(new Line2D.Float(0, -0.8f, 0, -0.7f));
          g2D.draw(new Line2D.Float(0, 0.85f, 0, 0.7f));
          // Draw a N
          GeneralPath path = new GeneralPath();

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          g2D.rotate(Math.toRadians(controller.getNorthDirectionInDegrees()));
          // Draw a round arc
          g2D.setStroke(new BasicStroke(0.5f / getWidth()));
          g2D.draw(new Ellipse2D.Float(-0.7f, -0.7f, 1.4f, 1.4f));
          g2D.draw(new Line2D.Float(-0.85f, 0, -0.7f, 0));
          g2D.draw(new Line2D.Float(0.85f, 0, 0.7f, 0));
          g2D.draw(new Line2D.Float(0, -0.8f, 0, -0.7f));
          g2D.draw(new Line2D.Float(0, 0.85f, 0, 0.7f));
          // Draw a N
          GeneralPath path = new GeneralPath();
          path.moveTo(-0.1f, -0.8f);

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          // Draw a round arc
          g2D.setStroke(new BasicStroke(0.5f / getWidth()));
          g2D.draw(new Ellipse2D.Float(-0.7f, -0.7f, 1.4f, 1.4f));
          g2D.draw(new Line2D.Float(-0.85f, 0, -0.7f, 0));
          g2D.draw(new Line2D.Float(0.85f, 0, 0.7f, 0));
          g2D.draw(new Line2D.Float(0, -0.8f, 0, -0.7f));
          g2D.draw(new Line2D.Float(0, 0.85f, 0, 0.7f));
          // Draw a N
          GeneralPath path = new GeneralPath();
          path.moveTo(-0.1f, -0.8f);
          path.lineTo(-0.1f, -1f);

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          g2D.setStroke(new BasicStroke(0.5f / getWidth()));
          g2D.draw(new Ellipse2D.Float(-0.7f, -0.7f, 1.4f, 1.4f));
          g2D.draw(new Line2D.Float(-0.85f, 0, -0.7f, 0));
          g2D.draw(new Line2D.Float(0.85f, 0, 0.7f, 0));
          g2D.draw(new Line2D.Float(0, -0.8f, 0, -0.7f));
          g2D.draw(new Line2D.Float(0, 0.85f, 0, 0.7f));
          // Draw a N
          GeneralPath path = new GeneralPath();
          path.moveTo(-0.1f, -0.8f);
          path.lineTo(-0.1f, -1f);
          path.lineTo(0.1f, -0.8f);

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          path.moveTo(-0.1f, -0.8f);
          path.lineTo(-0.1f, -1f);
          path.lineTo(0.1f, -0.8f);
          path.lineTo(0.1f, -1f);
          g2D.setStroke(new BasicStroke(1.5f / getWidth()));
          g2D.draw(path);
          // Draw the needle
          GeneralPath needlePath = new GeneralPath();
          needlePath.moveTo(0, -0.75f);
          needlePath.lineTo(0.2f, 0.7f);
          needlePath.lineTo(0, 0.5f);

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          needlePath.lineTo(-0.2f, 0.7f);
          needlePath.closePath();
          needlePath.moveTo(-0.02f, 0);
          needlePath.lineTo(0.02f, 0);
          g2D.setStroke(new BasicStroke(4 / getWidth()));
          g2D.draw(needlePath);
        }
      };
    this.northDirectionComponent.setOpaque(false);
    final PropertyChangeListener northDirectionChangeListener = new PropertyChangeListener() {
        public void propertyChange(PropertyChangeEvent ev) {

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        g2D.scale(scale, scale);       
        // Draw a scale distance line        
        g2D.setStroke(new BasicStroke(5 / scale, 
            BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
        float [][] scaleDistancePoints = this.controller.getScaleDistancePoints();
        g2D.draw(new Line2D.Float(scaleDistancePoints [0][0], scaleDistancePoints [0][1], 
                                  scaleDistancePoints [1][0], scaleDistancePoints [1][1]));
        // Draw start point line
        g2D.setStroke(new BasicStroke(1 / scale, 
            BasicStroke.CAP_BUTT, BasicStroke.JOIN_BEVEL));
        double angle = Math.atan2(scaleDistancePoints [1][1] - scaleDistancePoints [0][1],

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                    scaleDistancePoints [1][0] - scaleDistancePoints [0][0]);
        AffineTransform oldTransform2 = g2D.getTransform();
        g2D.translate(scaleDistancePoints [0][0], scaleDistancePoints [0][1]);
        g2D.rotate(angle);
        Shape endLine = new Line2D.Double(0, 5 / scale, 0, -5 / scale);
        g2D.draw(endLine);
        g2D.setTransform(oldTransform2);
        
        // Draw end point line
        g2D.translate(scaleDistancePoints [1][0], scaleDistancePoints [1][1]);
        g2D.rotate(angle);

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        g2D.setTransform(oldTransform2);
        
        // Draw end point line
        g2D.translate(scaleDistancePoints [1][0], scaleDistancePoints [1][1]);
        g2D.rotate(angle);
        g2D.draw(endLine);
        g2D.setTransform(oldTransform);
        g2D.setStroke(oldStroke);
      }
    }
  }

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