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Listing 30 . Source code for the program named GM01test06.
/*GM01test06.java
Copyright 2008, R.G.BaldwinRevised 02/24/08
This program is an update of the program named GM01test01.The purpose is to illustrate scaling a geometric object
by calling the method named GM01.Point3D.scale for eachpoint that makes up the object.
Tested using JDK 1.6 under WinXP.*********************************************************/
import java.awt.*;import javax.swing.*;
import java.awt.geom.*;class GM01test06{
public static void main(String[]args){
GUI guiObj = new GUI();}//end main
}//end controlling class GM01test06//======================================================//
class GUI extends JFrame{//Specify the horizontal and vertical size of a JFrame
// object.int hSize = 400;
int vSize = 400;Image osi;//an off-screen image
int osiWidth;//off-screen image widthint osiHeight;//off-screen image height
MyCanvas myCanvas;//a subclass of CanvasGUI(){//constructor//Set JFrame size, title, and close operation.
setSize(hSize,vSize);setTitle("Copyright 2008,R.G.Baldwin");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//Create a new drawing canvas and add it to the// center of the JFrame.
myCanvas = new MyCanvas();this.getContentPane().add(myCanvas);//This object must be visible before you can get an
// off-screen image. It must also be visible before// you can compute the size of the canvas.
setVisible(true);osiWidth = myCanvas.getWidth();
osiHeight = myCanvas.getHeight();//Create an off-screen image and get a graphics
// context on it.osi = createImage(osiWidth,osiHeight);
Graphics2D g2D = (Graphics2D)(osi.getGraphics());//Test many 3D library features using text.testUsingText();//Test many 3D library features using graphics.
drawOffScreen(g2D);//Cause the overridden paint method belonging to
// myCanvas to be executed.myCanvas.repaint();
}//end constructor//----------------------------------------------------//
//The purpose of this method is to test various// 3D aspects of the library using text.
public void testUsingText(){System.out.println(
"Test overridden toString of ColMatrix3D");GM01.ColMatrix3D tempA =new GM01.ColMatrix3D(1.5,2.5,3.5);
System.out.println(tempA);System.out.println();System.out.println(
"Test setData and getData of ColMatrix3D");tempA.setData(0,4.5);
System.out.println(tempA.getData(0));tempA.setData(1,5.5);
System.out.println(tempA.getData(1));tempA.setData(2,6.5);
System.out.println(tempA.getData(2));System.out.println();System.out.println(
"Test equals method of ColMatrix3D");GM01.ColMatrix3D tempB =
new GM01.ColMatrix3D(1.5,2.5,3.5);System.out.println(tempA.equals(tempB));
tempB.setData(0,4.5);tempB.setData(1,5.5);
tempB.setData(2,6.5);System.out.println(tempA.equals(tempB));
System.out.println();System.out.println("Test add method of ColMatrix3D");System.out.println(tempA.add(tempB));
System.out.println();System.out.println("Test subtract method of ColMatrix3D");
System.out.println(tempA.subtract(tempB));System.out.println();System.out.println("Test toString method of Point3D");
GM01.Point3D pointA = new GM01.Point3D(tempA);System.out.println(pointA);
System.out.println();System.out.println("Test setData and getData of Point3D");
pointA.setData(0,1.1);System.out.println(pointA.getData(0));
pointA.setData(1,2.2);System.out.println(pointA.getData(1));
pointA.setData(2,3.3);System.out.println(pointA.getData(2));
System.out.println();System.out.println("Test getColMatrix of Point3D");System.out.println(pointA.getColMatrix());
System.out.println();System.out.println("Test equals method of Point3D");GM01.Point3D pointB = new GM01.Point3D(tempB);
System.out.println(pointA.equals(pointB));pointA = new GM01.Point3D(tempB);
System.out.println(pointA.equals(pointB));System.out.println();//See the method named drawOffScreen for a test of
// the draw method of the Point3D class.System.out.println("Test getDisplacementVector method of Point3D");
pointA =new GM01.Point3D(new GM01.ColMatrix3D(1.5,2.5,3.5));
System.out.println(pointA);System.out.println(pointB);
System.out.println(pointA.getDisplacementVector(pointB));
System.out.println();System.out.println("Test addVectorToPoint method of Point3D");
System.out.println(pointA);System.out.println(pointA.addVectorToPoint(
new GM01.Vector3D(new GM01.ColMatrix3D(5.5,6.5,7.5))));
System.out.println();System.out.println("Test toString method of Vector3D");
GM01.Vector3D vecA = new GM01.Vector3D(new GM01.ColMatrix3D(1.5,2.5,3.5));
System.out.println(vecA);System.out.println();System.out.println(
"Test setData and getData methods of Vector3D");vecA.setData(0,4.5);
System.out.println(vecA.getData(0));vecA.setData(1,5.5);
System.out.println(vecA.getData(1));vecA.setData(2,6.5);
System.out.println(vecA.getData(2));System.out.println();//See the method named drawOffScreen for a test of
// the draw method of the Vector3D class.System.out.println("Test getColMatrix method of Vector3D");
System.out.println(vecA.getColMatrix());System.out.println();System.out.println("Test equals method of Vector3D");
GM01.Vector3D vecB = new GM01.Vector3D(new GM01.ColMatrix3D(1.5,2.5,3.5));
System.out.println(vecA.equals(vecB));vecB.setData(0,4.5);
vecB.setData(1,5.5);vecB.setData(2,6.5);
System.out.println(vecA.equals(vecB));System.out.println("Test add method of Vector3D");System.out.println(vecA);
vecB = new GM01.Vector3D(new GM01.ColMatrix3D(-1.5,2.5,3.5));
System.out.println(vecB);System.out.println(vecA.add(vecB));
System.out.println();System.out.println("Test getLength method of Vector3D");
vecA = new GM01.Vector3D(new GM01.ColMatrix3D(3.0,4.0,5.0));
System.out.println(vecA);System.out.println(vecA.getLength());
System.out.println();System.out.println("Test toString method of Line3D");GM01.Line3D lineA = new GM01.Line3D(pointA,pointB);
System.out.println(lineA);System.out.println();System.out.println("Test setTail, setHead, getTail, "
+ "\nand getHead methods of Line3D");lineA.setTail(pointB);
lineA.setHead(pointA);System.out.println(lineA.getTail());
System.out.println(lineA.getHead());System.out.println();
}//end testUsingText//----------------------------------------------------////The purpose of this method is to test various
// 3D aspects of the library using graphics.void drawOffScreen(Graphics2D g2D){//Translate the origin on the off-screen
// image and draw a pair of orthogonal axes on it.setCoordinateFrame(g2D);
//Define eight points that define the corners of// a box in 3D that is centered on the origin.GM01.Point3D[] points = new GM01.Point3D[8];
//Right sidepoints[0] =new GM01.Point3D(new GM01.ColMatrix3D(75,75,75));
points[1]=
new GM01.Point3D(new GM01.ColMatrix3D(75,75,-75));points[2] =new GM01.Point3D(new GM01.ColMatrix3D(75,-75,-75));
points[3]=
new GM01.Point3D(new GM01.ColMatrix3D(75,-75,75));//Left side
points[4]=
new GM01.Point3D(new GM01.ColMatrix3D(-75,75,75));points[5] =new GM01.Point3D(new GM01.ColMatrix3D(-75,75,-75));
points[6]=
new GM01.Point3D(new GM01.ColMatrix3D(-75,-75,-75));points[7] =new GM01.Point3D(new GM01.ColMatrix3D(-75,-75,75));//Scale each of the points that define the corners of
// the box.for(int cnt = 0;cnt<points.length;cnt++){
points[cnt]= points[cnt].scale(new GM01.ColMatrix3D(0.25,0.5,0.75));
}//end for loop//Draw seven of the points in BLACKg2D.setColor(Color.BLACK);
for(int cnt = 1;cnt<points.length;cnt++){
points[cnt].draw(g2D);
}//end for loop//Draw the right top front point in RED to identify// it.
g2D.setColor(Color.RED);points[0].draw(g2D);g2D.setColor(Color.BLACK);//Draw lines that connect the points to define the
// twelve edges of the box.//Right side
new GM01.Line3D(points[0],points[1]).draw(g2D);new GM01.Line3D(points[1],points[2]).draw(g2D);
new GM01.Line3D(points[2],points[3]).draw(g2D);new GM01.Line3D(points[3],points[0]).draw(g2D);//Left side
new GM01.Line3D(points[4],points[5]).draw(g2D);new GM01.Line3D(points[5],points[6]).draw(g2D);
new GM01.Line3D(points[6],points[7]).draw(g2D);new GM01.Line3D(points[7],points[4]).draw(g2D);//Front
new GM01.Line3D(points[0],points[4]).draw(g2D);new GM01.Line3D(points[3],points[7]).draw(g2D);//Back
new GM01.Line3D(points[1],points[5]).draw(g2D);new GM01.Line3D(points[2],points[6]).draw(g2D);
}//end drawOffScreen//----------------------------------------------------//
//This method is used to set the origin of the// off-screen image and to draw orthogonal 3D axes on
// the off-screen image that intersect at the origin.// Points are drawn where the axes intersect the
// surfaces of the box.private void setCoordinateFrame(Graphics2D g2D){
//Translate the origin to the center.GM01.translate(g2D,0.5*osiWidth,-0.5*osiHeight);
//Draw x-axis in RED. Scale the points before// drawing them so that they will identify the
// locations where the axes intersect the surface// of the box.
g2D.setColor(Color.RED);GM01.Point3D pointA =
new GM01.Point3D(new GM01.ColMatrix3D(-75,0,0));GM01.Point3D pointB =
newGM01.Point3D(new GM01.ColMatrix3D(75,0,0));
pointA.scale(new GM01.ColMatrix3D(0.25,0.0,0.0)).draw(g2D);
pointB.scale(new GM01.ColMatrix3D(0.25,0.0,0.0)).draw(g2D);
new GM01.Line3D(pointA,pointB).draw(g2D);//Draw y-axis in GREENg2D.setColor(Color.GREEN);
pointA =new GM01.Point3D(new GM01.ColMatrix3D(0,-75,0));
pointB =new GM01.Point3D(new GM01.ColMatrix3D(0,75,0));
pointA.scale(new GM01.ColMatrix3D(0.0,0.5,0.0)).draw(g2D);
pointB.scale(new GM01.ColMatrix3D(0.0,0.5,0.0)).draw(g2D);
new GM01.Line3D(pointA,pointB).draw(g2D);//Draw z-axis in BLUEg2D.setColor(Color.BLUE);
pointA =new GM01.Point3D(new GM01.ColMatrix3D(0,0,-75));
pointB =new GM01.Point3D(new GM01.ColMatrix3D(0,0,75));
pointA.scale(new GM01.ColMatrix3D(0.0,0.0,0.75)).draw(g2D);
pointB.scale(new GM01.ColMatrix3D(0.0,0.0,0.75)).draw(g2D);
new GM01.Line3D(pointA,pointB).draw(g2D);}//end setCoordinateFrame method
//====================================================////This is an inner class of the GUI class.
class MyCanvas extends Canvas{//Override the paint() method. This method will be
// called when the JFrame and the Canvas appear on the// screen or when the repaint method is called on the
// Canvas object.//The purpose of this method is to display the
// off-screen image on the screen.public void paint(Graphics g){
g.drawImage(osi,0,0,this);}//end overridden paint()}//end inner class MyCanvas}//end class GUI
//======================================================//
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