samer@0: package samer.j3d;
samer@0: 
samer@0: import samer.core.*;
samer@0: import java.awt.*;
samer@0: import javax.media.j3d.*;
samer@0: import javax.vecmath.*;
samer@0: import com.sun.j3d.utils.behaviors.keyboard.*;
samer@0: import com.sun.j3d.utils.behaviors.mouse.*;
samer@0: import com.sun.j3d.utils.geometry.*;
samer@0: 
samer@0: public class Util
samer@0: {
samer@0: 	private static Bounds bounds=new BoundingSphere(new Point3d(0,0,0),1000);
samer@0: 	public static void setBounds(Bounds b) { bounds=b; }
samer@0: 	public static Bounds getBounds() { return bounds; }
samer@0: 
samer@0: 
samer@0: 	// -------------- TransformGroup behviours ------------------
samer@0: 
samer@0: 	public static TransformGroup mouseRotate(TransformGroup tg)
samer@0: 	{
samer@0:         MouseRotate m = new MouseRotate(readwrite(tg));
samer@0:         m.setSchedulingBounds(bounds);
samer@0:         tg.addChild(m);
samer@0: 		return tg;
samer@0: 	}
samer@0: 
samer@0: 	public static TransformGroup mouseTranslate(TransformGroup tg)
samer@0: 	{
samer@0:         MouseTranslate m = new MouseTranslate(readwrite(tg));
samer@0:         m.setSchedulingBounds(bounds);
samer@0:         tg.addChild(m);
samer@0: 		return tg;
samer@0: 	}
samer@0: 
samer@0: 	public static TransformGroup mouseZoom(TransformGroup tg)
samer@0: 	{
samer@0:         MouseZoom m = new MouseZoom(readwrite(tg));
samer@0:         m.setSchedulingBounds(bounds);
samer@0:         tg.addChild(m);
samer@0: 		return tg;
samer@0: 	}
samer@0: 
samer@0: 	public static void addKeyNavigator(Group g, TransformGroup tg)
samer@0: 	{
samer@0: 		// readwrite(tg);
samer@0:         KeyNavigatorBehavior keynav = new KeyNavigatorBehavior(tg);
samer@0:         keynav.setSchedulingBounds(bounds);
samer@0:         g.addChild(keynav);
samer@0: 	}
samer@0: 
samer@0: 	public static TransformGroup addRotator(int period, TransformGroup tg)
samer@0: 	{
samer@0: 		Alpha alpha = new Alpha(-1, period);
samer@0: 		Behavior rotator = new RotationInterpolator(alpha, writable(tg));
samer@0: 		rotator.setSchedulingBounds(bounds);
samer@0: 		tg.addChild(rotator);
samer@0: 		return tg;
samer@0: 	}
samer@0: 
samer@0: 	// -------------- Lighting ------------------
samer@0: 
samer@0: 	public static Light color(Light l, Color3f c) { l.setColor(c); return l; }
samer@0: 	public static Light directionalLight(double x, double y, double z)
samer@0: 	{
samer@0:         DirectionalLight l = new DirectionalLight();
samer@0: 		l.setDirection(-(float)x,-(float)y,-(float)z);
samer@0:         l.setInfluencingBounds(bounds);
samer@0: 		return l;
samer@0: 	}
samer@0: 
samer@0: 	public static Light ambientLight() 
samer@0: 	{
samer@0:         AmbientLight a = new AmbientLight();
samer@0:         a.setInfluencingBounds(bounds);
samer@0: 		return a;
samer@0: 	}
samer@0: 
samer@0: 	public static Light pointLight(double x, double y, double z)
samer@0: 	{
samer@0:         PointLight l = new PointLight();
samer@0:         l.setInfluencingBounds(bounds);
samer@0: 		l.setPosition((float)x,(float)y,(float)z);
samer@0: 		l.setAttenuation(0,0,1);
samer@0: 		return l;
samer@0: 	}
samer@0: 
samer@0: 	public static Background background(double r, double g, double b)
samer@0: 	{
samer@0: 		Background bg=new Background((float)r,(float)g,(float)b);
samer@0: 		bg.setApplicationBounds(bounds);
samer@0: 		return bg;
samer@0: 	}
samer@0: 
samer@0: 
samer@0: 	public static ViewPlatform	 writable(ViewPlatform vp) {
samer@0:         vp.setCapability(ViewPlatform.ALLOW_POLICY_WRITE); return vp; 
samer@0: 	}
samer@0: 	public static TransformGroup writable(TransformGroup tg) {
samer@0:         tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); return tg; 
samer@0: 	}
samer@0: 	public static TransformGroup readwrite(TransformGroup tg) {
samer@0:         tg.setCapability(TransformGroup.ALLOW_TRANSFORM_WRITE); 
samer@0:         tg.setCapability(TransformGroup.ALLOW_TRANSFORM_READ); 
samer@0: 		return tg; 
samer@0: 	}
samer@0: 
samer@0: 	// ----------------- Appearances ------------------
samer@0: 
samer@0: 	// basic appearances
samer@0: 	
samer@0: 	public static Appearance points()
samer@0: 	{
samer@0: 		Appearance a = new Appearance();
samer@0: 		PolygonAttributes pa = new PolygonAttributes();
samer@0: 		pa.setPolygonMode(PolygonAttributes.POLYGON_POINT);
samer@0: 		pa.setCullFace(PolygonAttributes.CULL_NONE);
samer@0: 		a.setPolygonAttributes(pa);
samer@0: 		a.setPointAttributes(
samer@0: 			new PointAttributes((float)Shell.getDouble("pointsize",3), false));
samer@0: 		return a;
samer@0: 	}
samer@0: 
samer@0: 	public static Appearance wireframe()
samer@0: 	{
samer@0: 		Appearance a = new Appearance();
samer@0: 		PolygonAttributes polyAttrib = new PolygonAttributes();
samer@0: 		polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
samer@0: 		if (!Shell.getBoolean("backfacecull",false)) {
samer@0: 			polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
samer@0: 		}
samer@0: 		a.setPolygonAttributes(polyAttrib);
samer@0: 		a.setLineAttributes(
samer@0: 			new LineAttributes((float)Shell.getDouble("linewidth",2),
samer@0: 						LineAttributes.PATTERN_SOLID,true));
samer@0: 
samer@0: 		return a;
samer@0:     }
samer@0: 
samer@0:     public static Appearance shadedwireframe() 
samer@0: 	{
samer@0:         Appearance a = new Appearance();
samer@0:         PolygonAttributes polyAttrib = new PolygonAttributes();
samer@0:         polyAttrib.setPolygonMode(PolygonAttributes.POLYGON_LINE);
samer@0:         a.setPolygonAttributes(polyAttrib);
samer@0: 		a.setLineAttributes(new LineAttributes(2f,LineAttributes.PATTERN_SOLID,false));
samer@0: 
samer@0:         Material material = new Material();
samer@0:         material.setDiffuseColor(new Color3f(.7f, 0.6f, 0.9f));
samer@0: 		material.setShininess(128);
samer@0:         a.setMaterial(material);
samer@0:         return a;
samer@0:     }
samer@0: 
samer@0: 	public static Appearance offsetPolygon() 
samer@0: 	{		
samer@0: 		Appearance a = new Appearance();
samer@0: 		PolygonAttributes polyAttrib = new PolygonAttributes();
samer@0: 		polyAttrib.setPolygonOffset(2f);
samer@0: 		a.setPolygonAttributes(polyAttrib);
samer@0: 
samer@0: 		return a;
samer@0: 	}
samer@0: 	
samer@0: 	public static Appearance patches()
samer@0: 	{
samer@0: 		Appearance a = new Appearance();
samer@0: 		PolygonAttributes polyAttrib = new PolygonAttributes();
samer@0: 		polyAttrib.setCullFace(PolygonAttributes.CULL_NONE);
samer@0: 		a.setPolygonAttributes(polyAttrib);
samer@0: 
samer@0: 		// I think this is for transparent polygons
samer@0: 		// see depthBufferFreezeTransparent in view
samer@0: 		RenderingAttributes	ra=new RenderingAttributes();
samer@0: 		ra.setDepthBufferEnable(false);
samer@0: 		ra.setIgnoreVertexColors(false);
samer@0: 		a.setRenderingAttributes(ra);
samer@0: 		
samer@0: 		return a;
samer@0: 	}
samer@0: 
samer@0: 	// modifiers
samer@0: 	
samer@0: 	public static Appearance color(Color3f c, Appearance a)
samer@0: 	{
samer@0: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@0: 		colorAttrib.setColor(c);
samer@0: 		a.setColoringAttributes(colorAttrib);
samer@0: 		return a;
samer@0: 	}
samer@0: 
samer@0: 	public static Appearance flat(Appearance a)
samer@0: 	{
samer@0: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@0: 		colorAttrib.setShadeModel(ColoringAttributes.SHADE_FLAT);
samer@0: 		a.setColoringAttributes(colorAttrib);
samer@0: 		return a;
samer@0: 	}
samer@0: 
samer@0: 	public static Appearance flat(Color3f c, Appearance a)
samer@0: 	{
samer@0: 		ColoringAttributes colorAttrib=new ColoringAttributes();
samer@0: 		colorAttrib.setShadeModel(ColoringAttributes.SHADE_FLAT);
samer@0: 		colorAttrib.setColor(c);
samer@0: 		a.setColoringAttributes(colorAttrib);
samer@0: 		return a;
samer@0: 	}
samer@0: 
samer@0: 	public static Appearance alpha(double t, Appearance a)
samer@0: 	{
samer@0: 		a.setTransparencyAttributes(
samer@0: 			new TransparencyAttributes(TransparencyAttributes.BLENDED,(float)t));
samer@0: 		return a;
samer@0: 	}
samer@0: 
samer@0:     public static Appearance material(Color3f diff, Color3f spec, int shin, Appearance a) 
samer@0: 	{
samer@0:         Material material = new Material();
samer@0:         material.setDiffuseColor(diff);
samer@0:         material.setSpecularColor(spec);
samer@0: 		material.setShininess(shin);
samer@0:         a.setMaterial(material);
samer@0:         return a;
samer@0:     }
samer@0: }