samer@1: import samer.core.*;
samer@1: import java.awt.*;
samer@1: import javax.media.j3d.*;
samer@1: import javax.vecmath.*;
samer@1: //import com.sun.j3d.utils.universe.*; 
samer@1: import com.sun.j3d.utils.behaviors.keyboard.*;
samer@1: import com.sun.j3d.utils.behaviors.mouse.*;
samer@1: import com.sun.j3d.utils.geometry.*;
samer@1: 
samer@1: public class util
samer@1: {
samer@1: 	private static Bounds bounds=new BoundingSphere(new Point3d(0,0,0),1000);
samer@1: 
samer@1: 	public static void init() { new samer.core.shells.AppShell(); }
samer@1: 	public static void expose(java.awt.Component c,String title) {
samer@1: 		Shell.Window win;
samer@1: 		win=Shell.getWindow(title);
samer@1: 		win.addWindowListener(Shell.exitListener());
samer@1: 		win.container().setLayout(new BorderLayout());
samer@1: 		win.container().add(c);
samer@1: 		win.expose();
samer@1: 	}
samer@1: 
samer@1: 	public static void setBounds(Bounds b) { bounds=b; }
samer@1: 
samer@1: 	public static TransformGroup mouseRotate(TransformGroup tg)
samer@1: 	{
samer@1:         MouseRotate m = new MouseRotate(readwrite(tg));
samer@1:         // mr.setTransformGroup(tg);
samer@1:         m.setSchedulingBounds(bounds);
samer@1:         tg.addChild(m);
samer@1: 		return tg;
samer@1: 	}
samer@1: 
samer@1: 	public static TransformGroup mouseTranslate(TransformGroup tg)
samer@1: 	{
samer@1:         MouseTranslate m = new MouseTranslate(readwrite(tg));
samer@1:         // mr.setTransformGroup(tg);
samer@1:         m.setSchedulingBounds(bounds);
samer@1:         tg.addChild(m);
samer@1: 		return tg;
samer@1: 	}
samer@1: 
samer@1: 	public static TransformGroup mouseZoom(TransformGroup tg)
samer@1: 	{
samer@1:         MouseZoom m = new MouseZoom(readwrite(tg));
samer@1:         // mr.setTransformGroup(tg);
samer@1:         m.setSchedulingBounds(bounds);
samer@1:         tg.addChild(m);
samer@1: 		return tg;
samer@1: 	}
samer@1: 
samer@1: 	public static void addKeyNavigator(Group g, TransformGroup tg)
samer@1: 	{
samer@1: 		// readwrite(tg);
samer@1:         KeyNavigatorBehavior keynav = new KeyNavigatorBehavior(tg);
samer@1:         keynav.setSchedulingBounds(bounds);
samer@1:         g.addChild(keynav);
samer@1: 	}
samer@1: 
samer@1: 	public static void addKeyNavigator(Component c, Group g, TransformGroup tg)
samer@1: 	{
samer@1: 		// readwrite(tg);
samer@1:         KeyNavigatorBehavior keynav = new KeyNavigatorBehavior(c,tg);
samer@1:         keynav.setSchedulingBounds(bounds);
samer@1:         g.addChild(keynav);
samer@1: 	}
samer@1: 
samer@1: 	public static GeometryInfo yoyoGeometryInfo(int N)
samer@1: 	{
samer@1: 		GeometryInfo gi=new GeometryInfo(GeometryInfo.TRIANGLE_FAN_ARRAY);
samer@1: 
samer@1: 		int     totalN = 4*(N+1);
samer@1: 		Point3f coords[] = new Point3f[totalN];
samer@1: 		int     stripCounts[] = {N+1, N+1, N+1, N+1};
samer@1: 		float   r = 0.5f;
samer@1: 		float   w = 0.5f;
samer@1: 		int     n;
samer@1: 		double  a;
samer@1: 		float   x, y;
samer@1: 
samer@1: 		// set the central points for four triangle fan strips
samer@1: 		coords[0*(N+1)] = new Point3f(0.0f, 0.0f, w);
samer@1: 		coords[1*(N+1)] = new Point3f(0.0f, 0.0f, 0.0f);
samer@1: 		coords[2*(N+1)] = new Point3f(0.0f, 0.0f, 0.0f);
samer@1: 		coords[3*(N+1)] = new Point3f(0.0f, 0.0f, -w);
samer@1: 
samer@1: 		for(a = 0,n = 0; n < N; a = 2.0*Math.PI/(N-1) * ++n){
samer@1: 			x = (float) (r * Math.cos(a));
samer@1: 			y = (float) (r * Math.sin(a));
samer@1: 			coords[0*(N+1)+n+1] = new Point3f(x, y, w);
samer@1: 			coords[1*(N+1)+N-n] = new Point3f(x, y, w);
samer@1: 			coords[2*(N+1)+n+1] = new Point3f(x, y, -w);
samer@1: 			coords[3*(N+1)+N-n] = new Point3f(x, y, -w);
samer@1: 		}
samer@1: 
samer@1: 		gi.setCoordinates(coords);
samer@1: 		gi.setStripCounts(stripCounts);
samer@1: 
samer@1: 		return gi;
samer@1: 
samer@1: 	} 
samer@1: 
samer@1: 	public static void addRotator(TransformGroup tg)
samer@1: 	{
samer@1: 		Alpha alpha = new Alpha(-1, 24000);
samer@1: 		Behavior rotator = new RotationInterpolator(alpha, writable(tg));
samer@1: 		rotator.setSchedulingBounds(bounds);
samer@1: 		tg.addChild(rotator);
samer@1: 	}
samer@1: 
samer@1: 	public static Light color(Light l, Color3f c) { l.setColor(c); return l; }
samer@1: 	public static Light directionalLight(double x, double y, double z)
samer@1: 	{
samer@1:         DirectionalLight l = new DirectionalLight();
samer@1: 		l.setDirection(-(float)x,-(float)y,-(float)z);
samer@1:         l.setInfluencingBounds(bounds);
samer@1: 		return l;
samer@1: 	}
samer@1: 
samer@1: 	public static Light ambientLight() 
samer@1: 	{
samer@1:         AmbientLight a = new AmbientLight();
samer@1:         a.setInfluencingBounds(bounds);
samer@1: 		return a;
samer@1: 	}
samer@1: 
samer@1: 	public static Light pointLight(double x, double y, double z)
samer@1: 	{
samer@1:         PointLight l = new PointLight();
samer@1:         l.setInfluencingBounds(bounds);
samer@1: 		l.setPosition((float)x,(float)y,(float)z);
samer@1: 		l.setAttenuation(0,0,1);
samer@1: 		return l;
samer@1: 	}
samer@1: 
samer@1: 	public static void addBackground(Group g, Background bg)
samer@1: 	{	// background
samer@1: 		bg.setApplicationBounds(bounds);
samer@1: 		g.addChild(bg);
samer@1: 	}
samer@1: 
samer@1: 	public static View setViewPolicy(View v)
samer@1: 	{
samer@1: 		v.setWindowEyepointPolicy(View.RELATIVE_TO_WINDOW);
samer@1: 		//v.setWindowMovementPolicy(View.VIRTUAL_WORLD);
samer@1: 		v.setWindowResizePolicy(View.VIRTUAL_WORLD);
samer@1: 		//v.repaint();
samer@1: 		return v;
samer@1: 	}
samer@1: 
samer@1: 	public static ViewPlatform writable(ViewPlatform vp) {
samer@1:         vp.setCapability(ViewPlatform.ALLOW_POLICY_WRITE); return vp; 
samer@1: 	}
samer@1: 	public static TransformGroup writable(TransformGroup tg) {
samer@1:         tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); return tg; 
samer@1: 	}
samer@1: 	public static TransformGroup readwrite(TransformGroup tg) {
samer@1:         tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); 
samer@1:         tg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); 
samer@1: 		return tg; 
samer@1: 	}
samer@1: 
samer@1: 	public static Group yoyoGroup() { 
samer@1: 		return yoyoGroup(yoyoGeometryInfo(17).getGeometryArray());
samer@1: 	}
samer@1: 	public static Group yoyoGroup(Geometry geom) {
samer@1: 		return yoyoGroup(geom,wireframe2(),translucent());
samer@1: 	}
samer@1: 		
samer@1: 	public static Group yoyoGroup(Geometry geom, Appearance a1, Appearance a2)
samer@1: 	{
samer@1: 		Shape3D		faces=new Shape3D();
samer@1: 		Shape3D		edges=new Shape3D();
samer@1: 
samer@1: 		faces.setGeometry(geom);
samer@1: 		faces.setAppearance(a1);
samer@1: 		edges.setGeometry(geom);
samer@1: 		edges.setAppearance(a2);
samer@1: 		
samer@1: 		BranchGroup bg = new BranchGroup();
samer@1: 		bg.addChild(faces);
samer@1: 		bg.addChild(edges);
samer@1: 
samer@1: 		return bg;
samer@1: 	}
samer@1: 
samer@1: 	public static GraphicsConfiguration getGraphicsConfiguration()
samer@1: 	{
samer@1: /*
samer@1:         return GraphicsEnvironment.getLocalGraphicsEnvironment().
samer@1:                 getDefaultScreenDevice().getDefaultConfiguration();
samer@1: 		
samer@1: */		
samer@1: 		// Canvas default seems to be better than above
samer@1: 		return null;
samer@1: 		
samer@1: 	}
samer@1: 
samer@1:     static Appearance material1() 
samer@1: 	{
samer@1:         Appearance a = new Appearance();
samer@1:         PolygonAttributes polyAttrib = new PolygonAttributes();
samer@1: 		polyAttrib.setPolygonOffset(2f);
samer@1:         a.setPolygonAttributes(polyAttrib);
samer@1: 
samer@1:         Material material = new Material();
samer@1:         material.setDiffuseColor(new Color3f(.6f, 0.5f, 0.7f));
samer@1:         material.setSpecularColor(new Color3f(.6f, 0.5f, 0.7f));
samer@1: 		material.setShininess(48);
samer@1:         a.setMaterial(material);
samer@1:         return a;
samer@1:     }
samer@1: 
samer@1: 
samer@1:     static Appearance shadedwireframe() 
samer@1: 	{
samer@1:         Appearance a = new Appearance();
samer@1:         PolygonAttributes polyAttrib = new PolygonAttributes();
samer@1:         polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
samer@1:         a.setPolygonAttributes(polyAttrib);
samer@1: 		a.setLineAttributes(new LineAttributes(2f,LineAttributes.PATTERN_SOLID,false));
samer@1: 
samer@1:         Material material = new Material();
samer@1:         material.setDiffuseColor(new Color3f(.7f, 0.6f, 0.9f));
samer@1: 		material.setShininess(128);
samer@1:         a.setMaterial(material);
samer@1:         return a;
samer@1:     }
samer@1: 
samer@1: 
samer@1: 	static Appearance translucent() 
samer@1: 	{		
samer@1: 		Appearance a = new Appearance();
samer@1: 		PolygonAttributes polyAttrib = new PolygonAttributes();
samer@1: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@1: 		a.setPolygonAttributes(polyAttrib);
samer@1: 
samer@1: 		{
samer@1: 			boolean ft=Shell.getBoolean("yoyo.facetransparency",true);
samer@1: 			if (ft) {
samer@1: 				a.setTransparencyAttributes(
samer@1: 					new TransparencyAttributes(TransparencyAttributes.BLENDED,0.2f)
samer@1: 				);
samer@1: 				colorAttrib.setColor(0.45f,0.4f,.5f);
samer@1: 			} else {
samer@1: 				polyAttrib.setPolygonOffset(2f);
samer@1: 				colorAttrib.setColor(0.5f,0.4f,.5f);
samer@1: 			}
samer@1: 		}
samer@1: 		a.setColoringAttributes(colorAttrib);
samer@1: 		return a;
samer@1: 	}
samer@1: 
samer@1:     static Appearance wireframe1()
samer@1: 	{
samer@1: 
samer@1:         Appearance a = new Appearance();
samer@1:         PolygonAttributes polyAttrib = new PolygonAttributes();
samer@1:         polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
samer@1: 		if (!Shell.getBoolean("yoyo.bfacecull",false)) {
samer@1: 			polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
samer@1: 		}
samer@1: 		a.setLineAttributes(
samer@1: 			new LineAttributes((float)Shell.getDouble("yoyo.linewidth",1),
samer@1: 						LineAttributes.PATTERN_SOLID,true));
samer@1:         a.setPolygonAttributes(polyAttrib);
samer@1:         ColoringAttributes redColoring = new ColoringAttributes();
samer@1:         redColoring.setColor(.6f, 0.4f, 0.5f);
samer@1:         a.setColoringAttributes(redColoring);
samer@1: 		a.setTransparencyAttributes(
samer@1: 			new TransparencyAttributes(TransparencyAttributes.BLENDED,0.4f));
samer@1: 
samer@1:         return a;
samer@1:     }
samer@1: 
samer@1: 	static Appearance wireframe2()
samer@1: 	{
samer@1: 		Appearance appearance1 = new Appearance();
samer@1: 		PolygonAttributes polyAttrib = new PolygonAttributes();
samer@1: 		polyAttrib.setPolygonMode(
samer@1: 			Shell.getBoolean("yoyo.points",true) ?
samer@1: 				PolygonAttributes.POLYGON_POINT :
samer@1: 				PolygonAttributes.POLYGON_LINE
samer@1: 
samer@1: 		);
samer@1: 		if (!Shell.getBoolean("yoyo.bfacecull",false)) {
samer@1: 			polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
samer@1: 		}
samer@1: 	
samer@1: 		appearance1.setPolygonAttributes(polyAttrib);
samer@1: 		appearance1.setPointAttributes(
samer@1: 			new PointAttributes((float)Shell.getDouble("yoyo.pointsize",2), false));
samer@1: 		appearance1.setLineAttributes(
samer@1: 			new LineAttributes((float)Shell.getDouble("yoyo.linewidth",1),
samer@1: 						LineAttributes.PATTERN_SOLID,true));
samer@1: 		appearance1.setTransparencyAttributes(
samer@1: 			new TransparencyAttributes(TransparencyAttributes.BLENDED,0.7f));
samer@1: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@1: 		colorAttrib.setColor(0.8f,0.6f,1f);
samer@1: 		appearance1.setColoringAttributes(colorAttrib);
samer@1: 		return appearance1;
samer@1: 	}
samer@1: 
samer@1: 	static Appearance wireframe3()
samer@1: 	{
samer@1: 		Appearance appearance1 = new Appearance();
samer@1: 		PolygonAttributes polyAttrib = new PolygonAttributes();
samer@1: 		polyAttrib.setPolygonMode(
samer@1: 			Shell.getBoolean("yoyo.points",true) ?
samer@1: 				PolygonAttributes.POLYGON_POINT :
samer@1: 				PolygonAttributes.POLYGON_LINE
samer@1: 
samer@1: 		);
samer@1: 		if (!Shell.getBoolean("yoyo.bfacecull",false)) {
samer@1: 			polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
samer@1: 		}
samer@1: 	
samer@1: 		appearance1.setPolygonAttributes(polyAttrib);
samer@1: 		appearance1.setPointAttributes(
samer@1: 			new PointAttributes((float)Shell.getDouble("yoyo.pointsize",2), false));
samer@1: 		appearance1.setLineAttributes(
samer@1: 			new LineAttributes((float)Shell.getDouble("yoyo.linewidth",1),
samer@1: 						LineAttributes.PATTERN_SOLID,true));
samer@1: 		appearance1.setTransparencyAttributes(
samer@1: 			new TransparencyAttributes(TransparencyAttributes.BLENDED,0.7f));
samer@1: 
samer@1:         Material material = new Material();
samer@1:         material.setDiffuseColor(new Color3f(.8f, 0.6f, 1f));
samer@1:         appearance1.setMaterial(material);
samer@1: 		return appearance1;
samer@1: 	}
samer@1: 
samer@1: 	public static Appearance pointy()
samer@1: 	{
samer@1: 		Appearance a = new Appearance();
samer@1: 		PolygonAttributes pa = new PolygonAttributes();
samer@1: 		pa.setPolygonMode(PolygonAttributes.POLYGON_POINT);
samer@1: 		pa.setCullFace(PolygonAttributes.CULL_NONE);
samer@1: 		a.setPolygonAttributes(pa);
samer@1: 		a.setPointAttributes(new PointAttributes(5,false));
samer@1: 		a.setTransparencyAttributes(
samer@1: 		new TransparencyAttributes(TransparencyAttributes.BLENDED,0.8f));
samer@1: /*
samer@1: 			new TransparencyAttributes(
samer@1: 				TransparencyAttributes.BLENDED,0.9f,
samer@1: 				TransparencyAttributes.BLEND_SRC_ALPHA,
samer@1: 				TransparencyAttributes.BLEND_ONE));
samer@1: */
samer@1: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@1: 		colorAttrib.setColor(0.8f,0.6f,1f);
samer@1: 		a.setColoringAttributes(colorAttrib);
samer@1: 		return a;
samer@1: 	}
samer@1: 
samer@1: 	public static Appearance pointy2()
samer@1: 	{
samer@1: 		Appearance a = new Appearance();
samer@1: 		PolygonAttributes pa = new PolygonAttributes();
samer@1: 		pa.setPolygonMode(PolygonAttributes.POLYGON_POINT);
samer@1: 		pa.setCullFace(PolygonAttributes.CULL_NONE);
samer@1: 		a.setPolygonAttributes(pa);
samer@1: 		a.setPointAttributes(new PointAttributes(3,false));
samer@1: 		a.setTransparencyAttributes(
samer@1: 			new TransparencyAttributes(TransparencyAttributes.BLENDED,0.7f));
samer@1: 
samer@1: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@1: 		colorAttrib.setColor(0.8f,0.6f,1f);
samer@1: 		a.setColoringAttributes(colorAttrib);
samer@1: 		return a;
samer@1: 	}
samer@1: 
samer@1: 	public static Appearance pointy3()
samer@1: 	{
samer@1: 		Appearance a = new Appearance();
samer@1: 		PolygonAttributes pa = new PolygonAttributes();
samer@1: 		pa.setPolygonMode(PolygonAttributes.POLYGON_POINT);
samer@1: 		pa.setCullFace(PolygonAttributes.CULL_NONE);
samer@1: 		a.setPolygonAttributes(pa);
samer@1: 		a.setPointAttributes(new PointAttributes(3,false));
samer@1: 
samer@1: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@1: 		colorAttrib.setColor(0.8f,0.6f,1f);
samer@1: 		a.setColoringAttributes(colorAttrib);
samer@1: 		return a;
samer@1: 	}
samer@1: }