diff options
Diffstat (limited to 'engine/src/tools/jme3tools/converters/model/ModelConverter.java')
| -rw-r--r-- | engine/src/tools/jme3tools/converters/model/ModelConverter.java | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/engine/src/tools/jme3tools/converters/model/ModelConverter.java b/engine/src/tools/jme3tools/converters/model/ModelConverter.java new file mode 100644 index 0000000..2539574 --- /dev/null +++ b/engine/src/tools/jme3tools/converters/model/ModelConverter.java @@ -0,0 +1,183 @@ +/* + * Copyright (c) 2009-2010 jMonkeyEngine + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * * Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * * Neither the name of 'jMonkeyEngine' nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED + * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR + * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF + * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING + * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS + * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +package jme3tools.converters.model; + +import com.jme3.scene.Mesh.Mode; +import com.jme3.scene.*; +import com.jme3.scene.VertexBuffer.Format; +import com.jme3.scene.VertexBuffer.Type; +import com.jme3.scene.mesh.IndexBuffer; +import com.jme3.util.IntMap; +import com.jme3.util.IntMap.Entry; +import java.nio.Buffer; +import java.util.Arrays; +import java.util.Comparator; +import jme3tools.converters.model.strip.PrimitiveGroup; +import jme3tools.converters.model.strip.TriStrip; + +public class ModelConverter { + + private static final class PrimComparator + implements Comparator<PrimitiveGroup> { + + public int compare(PrimitiveGroup g1, PrimitiveGroup g2) { + if (g1.type < g2.type) + return -1; + else if (g1.type > g2.type) + return 1; + else + return 0; + } + } + + private static final PrimComparator primComp = new PrimComparator(); + + public static void generateStrips(Mesh mesh, boolean stitch, boolean listOnly, int cacheSize, int minStripSize){ + TriStrip ts = new TriStrip(); + ts.setStitchStrips(stitch); + ts.setCacheSize(cacheSize); + ts.setListsOnly(listOnly); + ts.setMinStripSize(minStripSize); + + IndexBuffer ib = mesh.getIndexBuffer(); + int[] indices = new int[ib.size()]; + for (int i = 0; i < indices.length; i++) + indices[i] = ib.get(i); + + PrimitiveGroup[] groups = ts.generateStrips(indices); + Arrays.sort(groups, primComp); + + int numElements = 0; + for (PrimitiveGroup group : groups) + numElements += group.numIndices; + + VertexBuffer original = mesh.getBuffer(Type.Index); + Buffer buf = VertexBuffer.createBuffer(original.getFormat(), + original.getNumComponents(), + numElements); + original.updateData(buf); + ib = mesh.getIndexBuffer(); + + int curIndex = 0; + int[] modeStart = new int[]{ -1, -1, -1 }; + int[] elementLengths = new int[groups.length]; + for (int i = 0; i < groups.length; i++){ + PrimitiveGroup group = groups[i]; + elementLengths[i] = group.numIndices; + + if (modeStart[group.type] == -1){ + modeStart[group.type] = i; + } + + int[] trimmedIndices = group.getTrimmedIndices(); + for (int j = 0; j < trimmedIndices.length; j++){ + ib.put(curIndex + j, trimmedIndices[j]); + } + + curIndex += group.numIndices; + } + + if (modeStart[0] == -1 && modeStart[1] == 0 && modeStart[2] == -1 && + elementLengths.length == 1){ + original.compact(elementLengths[0]); + mesh.setMode(Mode.TriangleStrip); + }else{ + mesh.setElementLengths(elementLengths); + mesh.setModeStart(modeStart); + mesh.setMode(Mode.Hybrid); + } + + mesh.updateCounts(); + } + + public static void optimize(Mesh mesh, boolean toFixed){ + // update any data that need updating + mesh.updateBound(); + mesh.updateCounts(); + + // set all buffers into STATIC_DRAW mode + mesh.setStatic(); + + if (mesh.getBuffer(Type.Index) != null){ + // compress index buffer from UShort to UByte (if possible) + FloatToFixed.compressIndexBuffer(mesh); + + // generate triangle strips stitched with degenerate tris + generateStrips(mesh, false, false, 16, 0); + } + + IntMap<VertexBuffer> bufs = mesh.getBuffers(); + for (Entry<VertexBuffer> entry : bufs){ + VertexBuffer vb = entry.getValue(); + if (vb == null || vb.getBufferType() == Type.Index) + continue; + + if (vb.getFormat() == Format.Float){ + if (vb.getBufferType() == Type.Color){ + // convert the color buffer to UByte + vb = FloatToFixed.convertToUByte(vb); + vb.setNormalized(true); + }else if (toFixed){ + // convert normals, positions, and texcoords + // to fixed-point (16.16) + vb = FloatToFixed.convertToFixed(vb); +// vb = FloatToFixed.convertToFloat(vb); + } + mesh.clearBuffer(vb.getBufferType()); + mesh.setBuffer(vb); + } + } + mesh.setInterleaved(); + } + + private static void optimizeScene(Spatial source, boolean toFixed){ + if (source instanceof Geometry){ + Geometry geom = (Geometry) source; + Mesh mesh = geom.getMesh(); + optimize(mesh, toFixed); + }else if (source instanceof Node){ + Node node = (Node) source; + for (int i = node.getQuantity() - 1; i >= 0; i--){ + Spatial child = node.getChild(i); + optimizeScene(child, toFixed); + } + } + } + + public static void optimize(Spatial source, boolean toFixed){ + optimizeScene(source, toFixed); + source.updateLogicalState(0); + source.updateGeometricState(); + } + +} |