import java.util.Collection;
import java.util.Iterator;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import no.geosoft.cc.geometry.Geometry;
import no.geosoft.cc.graphics.*;
/**
* G demo program. Demonstrates:
*
* <ul>
* <li>Annotation techniques
* <li>Custom interaction
* <li>Invisible lines with annotation
* <li>Using transparent colors
* <li>True scale resize
* </ul>
*
* @author <a href="mailto:[email protected]">Jacob Dreyer</a>
*/
public class Demo7 extends JFrame
implements GInteraction
{
private GScene scene_;
private GObject interaction_;
private GSegment interactionSegment_;
private GObject rubberBand_;
private Collection selection_;
private int x0_, y0_;
/**
* Class for creating the demo canvas and hande Swing events.
*/
public Demo7()
{
super ("G Graphics Library - Demo 7");
setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
// Create the GUI
JPanel topLevel = new JPanel();
topLevel.setLayout (new BorderLayout());
getContentPane().add (topLevel);
JPanel buttonPanel = new JPanel();
buttonPanel.add (new JLabel ("Move mouse to highlight"));
topLevel.add (buttonPanel, BorderLayout.NORTH);
// Create the graphic canvas
GWindow window = new GWindow (new Color (100, 100, 100));
topLevel.add (window.getCanvas(), BorderLayout.CENTER);
// Create scene with default viewport and world extent settings
scene_ = new GScene (window, "Scene");
double w0[] = {-1.0, -1.0, 0.0};
double w1[] = {10.0, -1.0, 0.0};
double w2[] = {-1.0, 10.0, 0.0};
scene_.setWorldExtent (w0, w1, w2);
scene_.shouldWorldExtentFitViewport (false);
scene_.shouldZoomOnResize (false);
// Create som graphic objects
GObject testObject = new TestObject (scene_);
scene_.add (testObject);
rubberBand_ = new GObject ("Interaction");
scene_.add (rubberBand_);
pack();
setSize (new Dimension (500, 500));
setVisible (true);
window.startInteraction (this);
}
public void event (GScene scene, int event, int x, int y)
{
switch (event) {
case GWindow.MOTION :
double[] w = scene_.getTransformer().deviceToWorld (x, y);
if (w[0] < 0 || w[0] > 8 || w[1] < 0 || w[1] > 8)
interaction_.removeSegment (interactionSegment_);
else {
interaction_.addSegment (interactionSegment_);
interactionSegment_.setGeometry (Geometry.createCircle (x, y, 30));
}
scene_.refresh();
}
}
/**
* Defines the geometry and presentation for the sample
* graphic object.
*/
private class TestObject extends GObject
{
private GSegment[] fields_;
private GSegment[] labels_;
/**
* As a rule of thumb we create as much of the object during
* construction as possible. Trye to do geometry only in the
* draw method.
*/
TestObject (GScene scene)
{
GStyle black = new GStyle();
black.setFillPattern (GStyle.FILL_SOLID);
black.setForegroundColor (new Color (0, 0, 0));
GStyle white = new GStyle();
white.setFillPattern (GStyle.FILL_SOLID);
white.setForegroundColor (new Color (255, 255, 255));
GStyle label = new GStyle();
label.setFont (new Font ("Dialog", Font.PLAIN, 24));
label.setLineStyle (GStyle.LINESTYLE_INVISIBLE);
label.setForegroundColor (new Color (210, 210, 210));
GStyle interaction = new GStyle();
interaction.setLineStyle (GStyle.LINESTYLE_INVISIBLE);
interaction.setBackgroundColor (new Color (1.0f, 0.0f, 0.0f, 0.7f));
fields_ = new GSegment[64];
labels_ = new GSegment[16];
for (int i = 0; i < 8; i++) {
for (int j = 0; j < 8; j++) {
GSegment field = new GSegment();
addSegment (field);
field.setStyle ((i + j) % 2 != 0 ? black : white);
fields_[i*8 + j] = field;
}
}
for (int i = 0; i < 8; i++) {
labels_[i] = new GSegment();
labels_[i].setStyle (label);
String text = "" + (i+1);
labels_[i].addText (new GText (text, GPosition.TOP));
labels_[i].addText (new GText (text, GPosition.BOTTOM));
addSegment (labels_[i]);
labels_[i+8] = new GSegment();
labels_[i+8].setStyle (label);
labels_[i+8].addText (new GText ((new Character ((char)('h' - i))).toString(),
GPosition.LEFT));
labels_[i+8].addText (new GText ((new Character ((char)('h' - i))).toString(),
GPosition.RIGHT));
addSegment (labels_[i+8]);
}
interaction_ = new GObject();
interaction_.setStyle (interaction);
interactionSegment_ = new GSegment();
interaction_.addSegment (interactionSegment_);
add (interaction_, front());
}
public void draw()
{
// Field geometry
for (int i = 0; i < 8; i++) {
for (int j = 0; j < 8; j++) {
double[] x = new double[] {i, i+1, i+1, i};
double[] y = new double[] {j, j, j+1, j+1};
fields_[i*8 + j].setGeometry (x, y);
}
}
// Label line geometry
for (int i = 0; i < 8; i++) {
labels_[i].setGeometry (i+0.5, 0.0, i+0.5, 8.0);
labels_[i+8].setGeometry (0.0, i+0.5, 8.0, i+0.5);
}
}
}
public static void main (String[] args)
{
new Demo7();
}
}
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G-AnnotationAndInteractionAndTransparentColorScale.zip( 194 k)
