org.simantics.proconf.processeditor/src/org/simantics/processeditor/gizmo/PositionSelectionGizmo.java

   1 /*******************************************************************************\r
   2  * Copyright (c) 2007- VTT Technical Research Centre of Finland.\r
   3  * All rights reserved. This program and the accompanying materials\r
   4  * are made available under the terms of the Eclipse Public License v1.0\r
   5  * which accompanies this distribution, and is available at\r
   6  * http://www.eclipse.org/legal/epl-v10.html\r
   7  *\r
   8  * Contributors:\r
   9  *     VTT Technical Research Centre of Finland - initial API and implementation\r
  10  *******************************************************************************/\r
  11 package org.simantics.processeditor.gizmo;\r
  12 \r
  13 import java.net.URL;\r
  14 import java.util.ArrayList;\r
  15 import java.util.List;\r
  16 \r
  17 import javax.vecmath.Point3d;\r
  18 \r
  19 import org.eclipse.core.runtime.FileLocator;\r
  20 import org.eclipse.core.runtime.Path;\r
  21 import org.simantics.processeditor.Activator;\r
  22 import org.simantics.processeditor.actions.PositionType;\r
  23 import org.simantics.proconf.g3d.base.ThreeDimensionalEditorBase;\r
  24 import org.simantics.proconf.g3d.base.VecmathJmeTools;\r
  25 import org.simantics.proconf.g3d.gizmo.Gizmo;\r
  26 import org.simantics.utils.datastructures.Pair;\r
  27 \r
  28 import com.jme.bounding.BoundingSphere;\r
  29 import com.jme.image.Image;\r
  30 import com.jme.image.Texture;\r
  31 import com.jme.math.Vector3f;\r
  32 import com.jme.renderer.Renderer;\r
  33 import com.jme.scene.BillboardNode;\r
  34 import com.jme.scene.Node;\r
  35 import com.jme.scene.shape.Quad;\r
  36 import com.jme.scene.state.AlphaState;\r
  37 import com.jme.scene.state.LightState;\r
  38 import com.jme.scene.state.TextureState;\r
  39 import com.jme.scene.state.ZBufferState;\r
  40 import com.jme.util.TextureManager;\r
  41 \r
  42 \r
  43 /**\r
  44  * Gizmo that allows user to selected insertion point of a component\r
  45  * TODO : for splits we want use line between component ends to\r
  46  *        position the button, instead of its center point.   \r
  47  * \r
  48  * @author Marko Luukkainen <Marko.Luukkainen@vtt.fi>\r
  49  *\r
  50  */\r
  51 public class PositionSelectionGizmo implements Gizmo {\r
  52 \r
  53         private static String PICK_PREFIX = "insert";\r
  54         private static String SPLIT_TEXTURE = "icons/middle.png";\r
  55         private static String END_TEXTURE = "icons/plus.png";\r
  56         private static String PORT_TEXTURE = END_TEXTURE;\r
  57 \r
  58         private ThreeDimensionalEditorBase parent;\r
  59         \r
  60         private boolean changed = false;\r
  61         private int selected = -1;\r
  62         private boolean useDistanceResize = true;\r
  63         \r
  64         private List<BillboardNode> nodes;\r
  65         private List<AlphaState> alphaStates;\r
  66         private Node rootNode;\r
  67         \r
  68         public PositionSelectionGizmo(ThreeDimensionalEditorBase parent, List<Pair<Point3d, PositionType>> positions) {\r
  69                 this.parent = parent;\r
  70                 rootNode = new Node();\r
  71                 rootNode.setCullMode(Node.CULL_NEVER);\r
  72                 rootNode.setRenderQueueMode(Renderer.QUEUE_TRANSPARENT);\r
  73                 rootNode.setLightCombineMode(LightState.OFF);\r
  74                 int i = 0;\r
  75                 nodes = new ArrayList<BillboardNode>();\r
  76                 alphaStates = new ArrayList<AlphaState>();\r
  77                 // create a button (billboard) for each insertion position\r
  78 \r
  79                 ZBufferState zs = parent.getRenderingComponent().getDisplaySystem().getRenderer().createZBufferState();\r
  80                 zs.setFunction(ZBufferState.CF_ALWAYS);\r
  81                 \r
  82                 for (Pair<Point3d, PositionType> p : positions) {\r
  83                         BillboardNode node = new BillboardNode("");\r
  84                         nodes.add(node);\r
  85                         Quad quad = new Quad(PICK_PREFIX + i,1.f,1.f);\r
  86                         \r
  87                         TextureState ts = parent.getRenderingComponent().getDisplaySystem().getRenderer().createTextureState();\r
  88                         String filename = "";\r
  89                         switch (p.second) {\r
  90                         case NEXT:\r
  91                         case PREVIOUS:\r
  92                                 filename = END_TEXTURE;\r
  93                                 break;\r
  94                         case SPLIT:\r
  95                                 filename = SPLIT_TEXTURE;\r
  96                                 break;\r
  97                         case PORT:\r
  98                                 filename = PORT_TEXTURE;\r
  99                         }\r
 100                         URL url = FileLocator.find(Activator.getDefault().getBundle(), new Path(filename),null);\r
 101                         Image image = TextureManager.loadImage(url, true);\r
 102                         Texture texture = new Texture();\r
 103                         texture.setImage(image);\r
 104                         texture.setFilter(Texture.FM_LINEAR);\r
 105                         ts.setTexture(texture);\r
 106                         quad.setRenderState(ts);\r
 107                         \r
 108                         AlphaState as = parent.getRenderingComponent().getDisplaySystem().getRenderer().createAlphaState();\r
 109                         as.setSrcFunction(AlphaState.SB_SRC_ALPHA);\r
 110                         as.setDstFunction(AlphaState.DB_ONE_MINUS_SRC_ALPHA);\r
 111                         as.setBlendEnabled(true);\r
 112                         alphaStates.add(as);\r
 113                         quad.setRenderState(as);\r
 114                         quad.setRenderState(zs);\r
 115                         \r
 116                         node.attachChild(quad);\r
 117                         node.setLocalTranslation(VecmathJmeTools.get(p.first));\r
 118                         quad.setModelBound(new BoundingSphere(0.5f,new Vector3f()));\r
 119                         quad.updateModelBound();\r
 120                         rootNode.attachChild(node);\r
 121                         \r
 122                         i++;\r
 123                 }\r
 124         }\r
 125         \r
 126         \r
 127         @Override\r
 128         public Node getNode() {\r
 129                 return rootNode;\r
 130         }\r
 131         \r
 132         @Override\r
 133         public String getPickPrefix() {\r
 134                 return PICK_PREFIX;\r
 135         }\r
 136         \r
 137         @Override\r
 138         public boolean isChanged() {\r
 139                 return changed;\r
 140         }\r
 141         \r
 142         @Override\r
 143         public void setChanged(boolean b) {\r
 144                 changed = b;\r
 145         }\r
 146         \r
 147         @Override\r
 148         public void setSelected(String name) {\r
 149                 if (name == null) {\r
 150                         setSelected(-1);\r
 151                         return;\r
 152                 }\r
 153                 assert(name.startsWith(PICK_PREFIX));\r
 154                 setSelected(Integer.parseInt(name.substring(PICK_PREFIX.length())));\r
 155         }\r
 156         \r
 157         private void setSelected(int i) {\r
 158                 if (selected == i)\r
 159                         return;\r
 160                 if (selected != -1) {\r
 161                         alphaStates.get(selected).setDstFunction(AlphaState.DB_ONE_MINUS_SRC_ALPHA);\r
 162                         nodes.get(selected).getChild(0).setRenderState(alphaStates.get(selected));\r
 163                 }\r
 164                 selected = i;\r
 165                 if (selected != -1) {\r
 166                         alphaStates.get(selected).setDstFunction(AlphaState.DB_ONE);\r
 167                         nodes.get(selected).getChild(0).setRenderState(alphaStates.get(selected));\r
 168                 }\r
 169                 parent.setViewChanged(true);\r
 170         }\r
 171         \r
 172         public int getSelected() {\r
 173                 return selected;\r
 174         }\r
 175         \r
 176         public void update() {\r
 177                 if (useDistanceResize) {\r
 178                         Vector3f v = VecmathJmeTools.get(parent.getCamera().getCameraPos());\r
 179                         for (BillboardNode n : nodes) {\r
 180                                 float length = v.subtract(n.getWorldTranslation()).length();\r
 181                                 n.setLocalScale(length * 0.06f);\r
 182                         }\r
 183                 }\r
 184         }\r
 185 \r
 186         \r
 187 }\r