Subversion Repositories distributed

package de.viathinksoft.marschall.raumplan.fraktal3d;

import java.awt.Color;

import com.jme.math.Vector3f;

import com.jme.renderer.ColorRGBA;

import com.jme.scene.Node;

import com.jme.scene.shape.Box;

import com.jme.scene.state.BlendState;

import com.jme.scene.state.MaterialState;

import com.jme.system.DisplaySystem;

public class Kubus {

        protected Box centerbox;

        private static final float Size_Faktor = 0.5f;

        private static final float Abstand_Faktor = 0.5f;

        private static final float Max_Iter = 5; // Ab 7 wird's eklig!

        public Kubus(Node rootNode, float size, float abstand, float x, float y, float z, LockDirectoryEnum e, int iter) {

                if (iter > Max_Iter) return;

                Box centerbox = new Box("Center-Box", new Vector3f(x-size/2, y-size/2, z-size/2), new Vector3f(x+size/2, y+size/2, z+size/2));

                Node rn = getRoomNode(centerbox, iter);

                rootNode.attachChild(rn);

                float abstand2 = 0.5f*size + abstand + 0.5f*size*Size_Faktor;

                if (e != LockDirectoryEnum.LOCK_X_NEG)

                        new Kubus(rn, size*Size_Faktor, abstand*Abstand_Faktor, x-abstand2, y, z, LockDirectoryEnum.LOCK_X_POS, iter+1);

                if (e != LockDirectoryEnum.LOCK_X_POS)

                        new Kubus(rn, size*Size_Faktor, abstand*Abstand_Faktor, x+abstand2, y, z, LockDirectoryEnum.LOCK_X_NEG, iter+1);

                if (e != LockDirectoryEnum.LOCK_Y_NEG)

                        new Kubus(rn, size*Size_Faktor, abstand*Abstand_Faktor, x, y-abstand2, z, LockDirectoryEnum.LOCK_Y_POS, iter+1);

                if (e != LockDirectoryEnum.LOCK_Y_POS)

                        new Kubus(rn, size*Size_Faktor, abstand*Abstand_Faktor, x, y+abstand2, z, LockDirectoryEnum.LOCK_Y_NEG, iter+1);

                if (e != LockDirectoryEnum.LOCK_Z_NEG)

                        new Kubus(rn, size*Size_Faktor, abstand*Abstand_Faktor, x, y, z-abstand2, LockDirectoryEnum.LOCK_Z_POS, iter+1);

                if (e != LockDirectoryEnum.LOCK_Z_POS)

                        new Kubus(rn, size*Size_Faktor, abstand*Abstand_Faktor, x, y, z+abstand2, LockDirectoryEnum.LOCK_Z_NEG, iter+1);

        }

        protected static Node getRoomNode(Box centerbox, int iter) {

                Node roomNode = new Node(); // Unnötiges Zwischennode?

                float opacityAmount = 1.0f;

                DisplaySystem display = DisplaySystem.getDisplaySystem();

                MaterialState materialState = display.getRenderer()

                .createMaterialState();

        // the sphere material that will be modified to make the sphere

        // look opaque then transparent then opaque and so on

        materialState = display.getRenderer().createMaterialState();

        materialState.setAmbient(new ColorRGBA(0.0f, 0.0f, 0.0f, opacityAmount));

        Color x = ColorUtilities.HSLtoRGB(1.0f/iter, 1.0f, 0.5f);

        float r = (float)x.getRed()/255;

        float g = (float)x.getGreen()/255;

        float b = (float)x.getBlue()/255;

        materialState.setDiffuse(new ColorRGBA(r, g, b, opacityAmount));

        materialState.setSpecular(new ColorRGBA(1.0f, 1.0f, 1.0f, opacityAmount));

        materialState.setShininess(128.0f);

        materialState.setEmissive(new ColorRGBA(0.0f, 0.0f, 0.0f, opacityAmount));

        materialState.setEnabled(true);

        // IMPORTANT: this is used to handle the internal sphere faces when

        // setting them to transparent, try commenting this line to see what

        // happens

        materialState.setMaterialFace(MaterialState.MaterialFace.FrontAndBack);

        centerbox.setRenderState(materialState);

        centerbox.updateRenderState();

        // to handle transparency: a BlendState

        // an other tutorial will be made to deal with the possibilities of this

        // RenderState

        final BlendState alphaState = DisplaySystem.getDisplaySystem().getRenderer().createBlendState();

        alphaState.setBlendEnabled(true);

        alphaState.setSourceFunction(BlendState.SourceFunction.SourceAlpha);

        alphaState.setDestinationFunction(BlendState.DestinationFunction.OneMinusSourceAlpha);

        alphaState.setTestEnabled(true);

        alphaState.setTestFunction(BlendState.TestFunction.GreaterThan);

        alphaState.setEnabled(true);

        centerbox.setRenderState(alphaState);

        centerbox.updateRenderState();

        roomNode.attachChild(centerbox);

        return roomNode;

        }

}