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Merge meshes in animated models by finding ones that maintain the same

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relative position throughout all animations.  Also, don't include 
transforms in the animations for nodes that never move.


git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@218 ed5b42cb-e716-0410-a449-f6a68f950b19
This commit is contained in:
Andrzej Kapolka
2007-05-01 23:36:23 +00:00
parent 86298ca832
commit 072926f814
8 changed files with 620 additions and 390 deletions
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src/java/com/threerings/jme/model/SkinMesh.java
+51 -50
View File
@@ -54,6 +54,7 @@ import com.samskivert.util.ArrayUtil;
import com.samskivert.util.HashIntMap;
import com.threerings.jme.Log;
import com.threerings.jme.util.JmeUtil;
/**
* A triangle mesh that deforms according to a bone hierarchy.
@@ -67,10 +68,10 @@ public class SkinMesh extends ModelMesh
{
/** The number of vertices in this weight group. */
public int vertexCount;
/** The bones influencing this group. */
public Bone[] bones;
/** The array of interleaved weights (of length <code>vertexCount *
* boneIndices.length</code>): weights for first vertex, weights for
* second, etc. */
@@ -92,13 +93,13 @@ public class SkinMesh extends ModelMesh
wgroup.weights = weights;
return wgroup;
}
// documentation inherited
public Class getClassTag ()
{
return getClass();
}
// documentation inherited
public void read (JMEImporter im)
throws IOException
@@ -119,7 +120,7 @@ public class SkinMesh extends ModelMesh
capsule.write(bones, "bones", null);
capsule.write(weights, "weights", null);
}
private static final long serialVersionUID = 1;
}
@@ -129,24 +130,24 @@ public class SkinMesh extends ModelMesh
{
/** The node that defines the bone's position. */
public ModelNode node;
/** The inverse of the bone's model space reference transform. */
public transient Matrix4f invRefTransform;
/** The bone's current transform in model space. */
public transient Matrix4f transform;
public Bone (ModelNode node)
{
this();
this.node = node;
}
public Bone ()
{
transform = new Matrix4f();
}
/**
* Rebinds this bone for a prototype instance.
*
@@ -159,13 +160,13 @@ public class SkinMesh extends ModelMesh
bone.transform = new Matrix4f();
return bone;
}
// documentation inherited
public Class getClassTag ()
{
return getClass();
}
// documentation inherited
public void read (JMEImporter im)
throws IOException
@@ -181,17 +182,17 @@ public class SkinMesh extends ModelMesh
OutputCapsule capsule = ex.getCapsule(this);
capsule.write(node, "node", null);
}
private static final long serialVersionUID = 1;
}
/**
* No-arg constructor for deserialization.
*/
public SkinMesh ()
{
}
/**
* Creates an empty mesh.
*/
@@ -199,7 +200,7 @@ public class SkinMesh extends ModelMesh
{
super(name);
}
/**
* Sets the array of weight groups that determine how bones affect
* each vertex.
@@ -207,7 +208,7 @@ public class SkinMesh extends ModelMesh
public void setWeightGroups (WeightGroup[] weightGroups)
{
_weightGroups = weightGroups;
// compile a list of all referenced bones
HashSet<Bone> bones = new HashSet<Bone>();
for (WeightGroup group : weightGroups) {
@@ -215,18 +216,18 @@ public class SkinMesh extends ModelMesh
}
_bones = bones.toArray(new Bone[bones.size()]);
}
@Override // documentation inherited
public void reconstruct (
FloatBuffer vertices, FloatBuffer normals, FloatBuffer colors,
FloatBuffer textures, IntBuffer indices)
{
super.reconstruct(vertices, normals, colors, textures, indices);
// initialize the quantized frame table
_frames = new HashIntMap<Object>();
}
@Override // documentation inherited
public Spatial putClone (Spatial store, Model.CloneCreator properties)
{
@@ -264,7 +265,7 @@ public class SkinMesh extends ModelMesh
mstore._nbuf = new float[_nbuf.length];
return mstore;
}
@Override // documentation inherited
public void read (JMEImporter im)
throws IOException
@@ -274,7 +275,7 @@ public class SkinMesh extends ModelMesh
setWeightGroups(ArrayUtil.copy(capsule.readSavableArray(
"weightGroups", null), new WeightGroup[0]));
}
@Override // documentation inherited
public void write (JMEExporter ex)
throws IOException
@@ -283,7 +284,7 @@ public class SkinMesh extends ModelMesh
OutputCapsule capsule = ex.getCapsule(this);
capsule.write(_weightGroups, "weightGroups", null);
}
@Override // documentation inherited
public void expandModelBounds ()
{
@@ -292,14 +293,14 @@ public class SkinMesh extends ModelMesh
updateModelBound();
getBatch(0).getModelBound().mergeLocal(obound);
}
@Override // documentation inherited
public void setReferenceTransforms ()
{
_invRefTransform = new Matrix4f();
if (parent instanceof ModelNode) {
Matrix4f transform = new Matrix4f();
ModelNode.setTransform(getLocalTranslation(), getLocalRotation(),
JmeUtil.setTransform(getLocalTranslation(), getLocalRotation(),
getLocalScale(), transform);
((ModelNode)parent).getModelTransform().mult(transform,
_invRefTransform);
@@ -310,7 +311,7 @@ public class SkinMesh extends ModelMesh
_invRefTransform.mult(bone.node.getModelTransform()).invert();
}
}
@Override // documentation inherited
public void lockStaticMeshes (
Renderer renderer, boolean useVBOs, boolean useDisplayLists)
@@ -325,14 +326,14 @@ public class SkinMesh extends ModelMesh
}
_useDisplayLists = useDisplayLists && !_translucent;
}
@Override // documentation inherited
public void storeMeshFrame (int frameId, boolean blend)
{
_storeFrameId = frameId;
_storeBlend = blend;
}
@Override // documentation inherited
public void setMeshFrame (int frameId)
{
@@ -346,7 +347,7 @@ public class SkinMesh extends ModelMesh
getBatch(0).updateRenderState();
}
}
@Override // documentation inherited
public void blendMeshFrames (int frameId1, int frameId2, float alpha)
{
@@ -359,7 +360,7 @@ public class SkinMesh extends ModelMesh
nbuf.rewind();
nbuf.put(_nbuf);
}
@Override // documentation inherited
public void updateWorldData (float time)
{
@@ -373,7 +374,7 @@ public class SkinMesh extends ModelMesh
bone.transform);
bone.transform.multLocal(bone.invRefTransform);
}
// deform the mesh according to the positions of the bones (this code
// is ugly as sin because it's optimized at a low level)
Bone[] bones;
@@ -397,11 +398,11 @@ public class SkinMesh extends ModelMesh
for (kk = 0; kk < bones.length; kk++) {
m = bones[kk].transform;
weight = weights[ww++];
vx += (ovx*m.m00 + ovy*m.m01 + ovz*m.m02 + m.m03) * weight;
vy += (ovx*m.m10 + ovy*m.m11 + ovz*m.m12 + m.m13) * weight;
vz += (ovx*m.m20 + ovy*m.m21 + ovz*m.m22 + m.m23) * weight;
nx += (onx*m.m00 + ony*m.m01 + onz*m.m02) * weight;
ny += (onx*m.m10 + ony*m.m11 + onz*m.m12) * weight;
nz += (onx*m.m20 + ony*m.m21 + onz*m.m22) * weight;
@@ -414,7 +415,7 @@ public class SkinMesh extends ModelMesh
_nbuf[bidx++] = nz;
}
}
// if skinning in real time, copy the data from arrays to buffers;
// otherwise, store the mesh as an animation frame
if (_storeFrameId == 0) {
@@ -428,7 +429,7 @@ public class SkinMesh extends ModelMesh
_storeFrameId = -1;
}
}
/**
* Stores the current frame data for later use.
*/
@@ -465,12 +466,12 @@ public class SkinMesh extends ModelMesh
_frames.put(_storeFrameId, tbatch);
}
}
@Override // documentation inherited
protected void storeOriginalBuffers ()
{
super.storeOriginalBuffers();
FloatBuffer vbuf = getVertexBuffer(0), nbuf = getNormalBuffer(0);
vbuf.rewind();
nbuf.rewind();
@@ -479,19 +480,19 @@ public class SkinMesh extends ModelMesh
_vbuf = new float[_ovbuf.length];
_nbuf = new float[_onbuf.length];
}
/** A stored frame used for linear blending. */
protected static class BlendFrame
{
/** The skinned vertex and normal values. */
public float[] vbuf, nbuf;
public BlendFrame (float[] vbuf, float[] nbuf)
{
this.vbuf = vbuf;
this.nbuf = nbuf;
}
public void blend (
BlendFrame next, float alpha, float[] rvbuf, float[] rnbuf)
{
@@ -502,26 +503,26 @@ public class SkinMesh extends ModelMesh
rnbuf[ii] = nbuf[ii] * ialpha + nnbuf[ii] * alpha;
}
}
}
}
/** Pre-skinned {@link TriangleBatch}es or {@link BlendFrame}s shared
* between all instances corresponding to frame ids from
* {@link #storeAnimationFrame}. */
protected HashIntMap<Object> _frames;
/** Whether or to use display lists if VBOs are unavailable for quantized
* meshes. */
protected boolean _useDisplayLists;
/** The inverse of the model space reference transform. */
protected Matrix4f _invRefTransform;
/** The groups of vertices influenced by different sets of bones. */
protected WeightGroup[] _weightGroups;
/** The bones referenced by the weight groups. */
protected Bone[] _bones;
/** The original (undeformed) vertex and normal buffers and the deformed
* versions. */
protected float[] _onbuf, _ovbuf, _nbuf;
@@ -530,12 +531,12 @@ public class SkinMesh extends ModelMesh
* and skin the mesh as normal. If -1, a frame has been stored and thus
* skinning should only take place when further frames are requested. */
protected int _storeFrameId;
/** Whether or not the stored frame id will be used for blending. */
protected boolean _storeBlend;
/** A dummy mesh that simply hold transformation values. */
protected static final TriMesh DUMMY_MESH = new TriMesh();
private static final long serialVersionUID = 1;
}