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Further low-level tweaking.

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git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@4082 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Andrzej Kapolka
2006-05-02 23:06:38 +00:00
parent 2728af5059
commit b4eacdbf0e
1 changed files with 26 additions and 30 deletions
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src/java/com/threerings/jme/model/SkinMesh.java
+26 -30
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@@ -211,6 +211,8 @@ public class SkinMesh extends ModelMesh
} }
mstore._ovbuf = _ovbuf; mstore._ovbuf = _ovbuf;
mstore._onbuf = _onbuf; mstore._onbuf = _onbuf;
mstore._vbuf = new float[_vbuf.length];
mstore._nbuf = new float[_nbuf.length];
return mstore; return mstore;
} }
@@ -295,27 +297,24 @@ public class SkinMesh extends ModelMesh
// deform the mesh according to the positions of the bones (this code // deform the mesh according to the positions of the bones (this code
// is ugly as sin because it's optimized at a low level) // is ugly as sin because it's optimized at a low level)
Bone[] bones; Bone[] bones;
int vertexCount; int vertexCount, jj, kk, ww;
float[] weights; float[] weights;
Matrix4f m; Matrix4f m;
float weight, ovx, ovy, ovz, onx, ony, onz, vx, vy, vz, nx, ny, nz; float weight, ovx, ovy, ovz, onx, ony, onz, vx, vy, vz, nx, ny, nz;
FloatBuffer vbuf = getVertexBuffer(), nbuf = getNormalBuffer();
vbuf.rewind();
nbuf.rewind();
for (int ii = 0, bidx = 0; ii < _weightGroups.length; ii++) { for (int ii = 0, bidx = 0; ii < _weightGroups.length; ii++) {
vertexCount = _weightGroups[ii].vertexCount; vertexCount = _weightGroups[ii].vertexCount;
bones = _weightGroups[ii].bones; bones = _weightGroups[ii].bones;
weights = _weightGroups[ii].weights; weights = _weightGroups[ii].weights;
for (int jj = 0, ww = 0; jj < vertexCount; jj++) { for (jj = 0, ww = 0; jj < vertexCount; jj++) {
ovx = _ovbuf[bidx]; ovx = _ovbuf[bidx];
ovy = _ovbuf[bidx + 1]; ovy = _ovbuf[bidx + 1];
ovz = _ovbuf[bidx + 2]; ovz = _ovbuf[bidx + 2];
onx = _onbuf[bidx++]; onx = _onbuf[bidx];
ony = _onbuf[bidx++]; ony = _onbuf[bidx + 1];
onz = _onbuf[bidx++]; onz = _onbuf[bidx + 2];
vx = vy = vz = 0f; vx = vy = vz = 0f;
nx = ny = nz = 0f; nx = ny = nz = 0f;
for (int kk = 0; kk < bones.length; kk++) { for (kk = 0; kk < bones.length; kk++) {
m = bones[kk].transform; m = bones[kk].transform;
weight = weights[ww++]; weight = weights[ww++];
@@ -327,10 +326,21 @@ public class SkinMesh extends ModelMesh
ny += (onx*m.m10 + ony*m.m11 + onz*m.m12) * weight; ny += (onx*m.m10 + ony*m.m11 + onz*m.m12) * weight;
nz += (onx*m.m20 + ony*m.m21 + onz*m.m22) * weight; nz += (onx*m.m20 + ony*m.m21 + onz*m.m22) * weight;
} }
vbuf.put(vx); vbuf.put(vy); vbuf.put(vz); _vbuf[bidx] = vx;
nbuf.put(nx); nbuf.put(ny); nbuf.put(nz); _vbuf[bidx + 1] = vy;
_vbuf[bidx + 2] = vz;
_nbuf[bidx++] = nx;
_nbuf[bidx++] = ny;
_nbuf[bidx++] = nz;
} }
} }
// copy it from array to buffer
FloatBuffer vbuf = getVertexBuffer(), nbuf = getNormalBuffer();
vbuf.rewind();
vbuf.put(_vbuf);
nbuf.rewind();
nbuf.put(_nbuf);
} }
/** /**
@@ -343,23 +353,8 @@ public class SkinMesh extends ModelMesh
nbuf.rewind(); nbuf.rewind();
FloatBuffer.wrap(_ovbuf = new float[vbuf.capacity()]).put(vbuf); FloatBuffer.wrap(_ovbuf = new float[vbuf.capacity()]).put(vbuf);
FloatBuffer.wrap(_onbuf = new float[nbuf.capacity()]).put(nbuf); FloatBuffer.wrap(_onbuf = new float[nbuf.capacity()]).put(nbuf);
} _vbuf = new float[_ovbuf.length];
_nbuf = new float[_onbuf.length];
/**
* Multiplies a normal vector by the 3x3 rotation submatrix of the given
* matrix.
*
* @param store the vector in which to store the result
* @return the result vector
*/
protected static Vector3f multNormal (
Vector3f normal, Matrix4f matrix, Vector3f store)
{
float nx = normal.x, ny = normal.y, nz = normal.z;
store.x = nx * matrix.m00 + ny * matrix.m01 + nz * matrix.m02;
store.y = nx * matrix.m10 + ny * matrix.m11 + nz * matrix.m12;
store.z = nx * matrix.m20 + ny * matrix.m21 + nz * matrix.m22;
return store;
} }
/** The groups of vertices influenced by different sets of bones. */ /** The groups of vertices influenced by different sets of bones. */
@@ -368,8 +363,9 @@ public class SkinMesh extends ModelMesh
/** The bones referenced by the weight groups. */ /** The bones referenced by the weight groups. */
protected Bone[] _bones; protected Bone[] _bones;
/** The original (undeformed) vertex and normal buffers. */ /** The original (undeformed) vertex and normal buffers and the deformed
protected float[] _ovbuf, _onbuf; * versions. */
protected float[] _ovbuf, _onbuf, _vbuf, _nbuf;
/** The node's transform in model space. */ /** The node's transform in model space. */
protected Matrix4f _modelTransform = new Matrix4f(); protected Matrix4f _modelTransform = new Matrix4f();