/* * CoordinateSystem.java * * Created on December 29, 2000, 5:11 PM */ package edu.ou.eml.fea3d; /** * * @author Qiuli Sun * @version 1.0 */ import javax.media.j3d.*; import javax.vecmath.*; import com.sun.j3d.utils.geometry.*; import com.sun.j3d.utils.picking.*; import java.awt.*; public class CoordinateSystem { public static float rate = DataContainer.maxXYZ / 100.0f; //Info about the force geometry, //which should dynamically get based on the geometry input public static float arrowRadius = 0.7f * rate ; public static float arrowLen = 2.5f * rate; public static float arrowShaftRadius = 0.30f * rate; public static float arrowShaftLen = 4.0f * rate ; //Instance variables,which can be accessed by other classes public BranchGroup coordSystemBG; public static float x0, y0, z0 ; public static float xDiff, yDiff, zDiff ; /** Creates new CoordinateSystem */ public CoordinateSystem() { coordSystemBG = new BranchGroup (); coordSystemBG.setPickable(false); //xyzTG is used to move the coord system to any new location TransformGroup xyzTG = new TransformGroup () ; //xyzTransform3D is a shared transform matrix Transform3D xyzTransform3D = new Transform3D(); //Movement happens here //The basic rule is to move the coord to the shortest difference xDiff = (DataContainer.xMax - DataContainer.xMin); yDiff = (DataContainer.yMax - DataContainer.yMin); zDiff = (DataContainer.zMax - DataContainer.zMin); x0 = (DataContainer.xMin + DataContainer.xMax) / 2.0f; y0 = (DataContainer.yMin + DataContainer.yMax) / 2.0f; z0 = (DataContainer.zMin + DataContainer.zMax) / 2.0f ; if ( xDiff < yDiff & yDiff <= zDiff) { x0 = DataContainer.xMax + 0.6f* (arrowLen + arrowShaftLen); } else { if ( yDiff <= xDiff & xDiff < zDiff) { y0 = DataContainer.yMax + 0.6f*(arrowLen + arrowShaftLen); } else { z0 = DataContainer.zMax + 0.6f* (arrowLen + arrowShaftLen); } } xyzTransform3D.setTranslation(new Vector3f(x0, y0, z0)); xyzTG.setTransform(xyzTransform3D); //Create an appearance for axises Appearance axisAppearance = createAxisAppearance () ; //create an appearance for x,y,z text Appearance textAppearance = createTextAppearance(); //font3D can be used three times Font3D font3D = new Font3D(new Font("Helvetica", Font.PLAIN, (int)(3*rate)), new FontExtrusion()); TransformGroup xHeadTG = new TransformGroup(); TransformGroup xShaftTG = new TransformGroup(); TransformGroup xTextTG = new TransformGroup(); Cylinder xShaft = new Cylinder (arrowShaftRadius, arrowShaftLen ) ; xShaft.setAppearance(axisAppearance); xyzTransform3D.setIdentity(); xyzTransform3D.rotZ( - Math.PI/2.0f ); xyzTransform3D.setTranslation(new Vector3f(arrowShaftLen / 2.0f, 0.0f, 0.0f) ); xShaftTG.setTransform(xyzTransform3D); xShaftTG.addChild(xShaft); xyzTG.addChild(xShaftTG); // create the head of x axis Cone xHead = new Cone ( arrowRadius, arrowLen); xHead.setAppearance(axisAppearance); xyzTransform3D.setIdentity(); xyzTransform3D.rotZ( - Math.PI/2.0f ); xyzTransform3D.setTranslation(new Vector3f( arrowShaftLen + arrowLen / 2.0f , 0.0f, 0.0f) ); xHeadTG.setTransform(xyzTransform3D); xHeadTG.addChild (xHead); xyzTG.addChild(xHeadTG); //create 'x' text Text3D textGeom = new Text3D( font3D, new String("X") ); textGeom.setAlignment(Text3D.ALIGN_CENTER); //Please note, OrientedShape3D is much better than billboard //The reason is that it works in every view and is easy to code OrientedShape3D xTextShape = new OrientedShape3D(); xTextShape.setGeometry(textGeom); xTextShape.setAppearance(textAppearance); Point3f rotationPt = new Point3f(0.0f, 0.0f, 0.0f); xTextShape.setAlignmentMode(OrientedShape3D.ROTATE_ABOUT_POINT); xTextShape.setRotationPoint(rotationPt); xyzTransform3D.setIdentity(); xyzTransform3D.rotY(- Math.PI / 2.0f ); xyzTransform3D.setTranslation ( new Vector3f(arrowShaftLen + 1.4f * arrowLen, 0.0f, 0.0f) ); xTextTG.setTransform(xyzTransform3D); xTextTG.addChild(xTextShape); xyzTG.addChild(xTextTG); //+++++++++++++++++++++++++++++++++ //creating y axis TransformGroup yShaftTG = new TransformGroup(); TransformGroup yHeadTG = new TransformGroup(); TransformGroup yTextTG = new TransformGroup(); Cylinder yShaft = new Cylinder (arrowShaftRadius, arrowShaftLen ) ; yShaft.setAppearance(axisAppearance); xyzTransform3D.setIdentity(); xyzTransform3D.setTranslation(new Vector3f(0.0f, arrowShaftLen / 2.0f, 0.0f)); yShaftTG.setTransform(xyzTransform3D); yShaftTG.addChild(yShaft); xyzTG.addChild(yShaftTG); // create the head of y axis Cone yHead = new Cone ( arrowRadius, arrowLen); yHead.setAppearance(axisAppearance); xyzTransform3D.setIdentity(); xyzTransform3D.setTranslation(new Vector3f( 0.0f, arrowShaftLen + arrowLen / 2.0f, 0.0f) ); yHeadTG.setTransform(xyzTransform3D); yHeadTG.addChild (yHead); xyzTG.addChild(yHeadTG); //create 'y' text textGeom = new Text3D( font3D, new String("Y") ); textGeom.setAlignment(Text3D.ALIGN_CENTER); OrientedShape3D yTextShape = new OrientedShape3D(); yTextShape.setGeometry(textGeom); yTextShape.setAppearance(textAppearance); yTextShape.setAlignmentMode(OrientedShape3D.ROTATE_ABOUT_POINT); yTextShape.setRotationPoint(rotationPt); xyzTransform3D.setIdentity(); xyzTransform3D.rotY(- Math.PI / 2.0f ); xyzTransform3D.setTranslation ( new Vector3f( 0.0f, arrowShaftLen + 1.4f * arrowLen, 0.0f ) ); yTextTG.setTransform(xyzTransform3D); yTextTG.addChild(yTextShape); xyzTG.addChild(yTextTG); //+++++++++++++++++++++++ //create z axis and 'z' text TransformGroup zHeadTG = new TransformGroup(); TransformGroup zShaftTG = new TransformGroup(); //we need billboard to rotate the 'z' text TransformGroup zTextTG = new TransformGroup(); zTextTG.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); zTextTG.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); //create the shaft of z axis Cylinder zShaft = new Cylinder (arrowShaftRadius, arrowShaftLen ) ; zShaft.setAppearance(axisAppearance); xyzTransform3D.setIdentity(); xyzTransform3D.rotX( Math.PI/2.0f); xyzTransform3D.setTranslation(new Vector3f(0.0f, 0.0f, arrowShaftLen / 2.0f)); zShaftTG.setTransform(xyzTransform3D); zShaftTG.addChild(zShaft); xyzTG.addChild(zShaftTG); // create the head of z axis Cone zHead = new Cone ( arrowRadius, arrowLen); zHead.setAppearance(axisAppearance); xyzTransform3D.setIdentity(); xyzTransform3D.rotX( Math.PI/2.0f ); xyzTransform3D.setTranslation(new Vector3f( 0.0f, 0.0f, arrowShaftLen + arrowLen / 2.0f) ); zHeadTG.setTransform(xyzTransform3D); zHeadTG.addChild (zHead); xyzTG.addChild(zHeadTG); //create text of z textGeom = new Text3D( font3D, new String("Z") ); textGeom.setAlignment(Text3D.ALIGN_CENTER); //Shape3D zTextShape = new Shape3D(); OrientedShape3D zTextShape = new OrientedShape3D(); zTextShape.setGeometry(textGeom); zTextShape.setAppearance(textAppearance); zTextShape.setAlignmentMode(OrientedShape3D.ROTATE_ABOUT_POINT); zTextShape.setRotationPoint(rotationPt); //extShape.setAlignmentAxis( 0.0f, 1.0f, 0.0f); xyzTransform3D.setIdentity(); xyzTransform3D.rotY(- Math.PI / 2.0f ); xyzTransform3D.setTranslation( new Vector3f( 0.0f, -0.4f * arrowLen, arrowShaftLen + 1.5f * arrowLen ) ); zTextTG.setTransform(xyzTransform3D); zTextTG.addChild(zTextShape); xyzTG.addChild(zTextTG); coordSystemBG.addChild ( xyzTG ); //Only after everything is ok, then the forceBG can be added into coordSystemBG DataContainer.geometryTG.addChild (coordSystemBG); } //****************************************** private final static Color3f ambColor = new Color3f ( 0.3f, 0.3f, 0.3f ) ; private final static Color3f emissColor = new Color3f ( 0.1f,0.1f,0.1f ) ; private final static float shininess = 50.0f ; private final Appearance createAxisAppearance () { Appearance axisAppearance = new Appearance (); Color3f diffColor = new Color3f ( 0.0f, 1.0f, 1.0f ) ; Color3f specColor = new Color3f ( 1.0f, 1.0f, 1.0f ) ; Material material = new Material (ambColor, emissColor, diffColor, specColor, shininess); axisAppearance.setMaterial (material); return axisAppearance ; } public final static Appearance createTextAppearance() { Appearance textAppearance = new Appearance (); Color3f diffColor = new Color3f ( 1.0f, 0.0f, 0.3f ) ; Color3f specColor = new Color3f ( 1.0f, 0.3f, 1.0f ) ; Material material = new Material (ambColor, emissColor, diffColor, specColor, shininess); textAppearance.setMaterial (material); return textAppearance ; } }