C++ LLVOAvatar::getMesh方法代码示例

//.........这里部分代码省略.........
	// Because meshes are set by continually updating morph weights
	// there is no easy way to reapply the morphs, so we just compute
	// the change in this morph and apply that appropriately weighted.

	for( morph_index = 0; morph_index < mNumIndices; morph_index++)
	{
		vert_index = mVertexIndices[morph_index];

		delta_coords[vert_index].sub(	mCoords[morph_index]);
		delta_normals[vert_index].sub(	mNormals[morph_index]);
		delta_binormals[vert_index].sub(mBinormals[morph_index]);
		delta_tex_coords[vert_index] -= mTexCoords[morph_index];
	}

	//-------------------------------------------------------------------------
	// Update all avatars
	//-------------------------------------------------------------------------

	std::vector< LLCharacter* >::iterator avatar_it;
	for(avatar_it = LLCharacter::sInstances.begin(); avatar_it != LLCharacter::sInstances.end(); ++avatar_it)
	{
		LLVOAvatar* avatarp = (LLVOAvatar*)*avatar_it;

		LLPolyMorphTarget* param = (LLPolyMorphTarget*) avatarp->getVisualParam(mName.c_str());
		if (!param)
		{
			continue;
		}

		F32 weight = param->getLastWeight();
		if (weight == 0.0f)
		{
			continue;
		}

		LLPolyMesh* mesh = avatarp->getMesh(mMesh);
		if (!mesh)
		{
			continue;
		}

		// If we have a vertex mask, just remove it.  It will be recreated.
		/*if (param->undoMask(TRUE))
		{
			continue;
		}*/

		LLVector4a *mesh_coords           = mesh->getWritableCoords();
		LLVector4a *mesh_normals          = mesh->getWritableNormals();
		LLVector4a *mesh_binormals        = mesh->getWritableBinormals();
		LLVector2 *mesh_tex_coords        = mesh->getWritableTexCoords();
		LLVector4a *mesh_scaled_normals   = mesh->getScaledNormals();
		LLVector4a *mesh_scaled_binormals = mesh->getScaledBinormals();

		for( vert_index = 0; vert_index < nverts; vert_index++)
		{
			delta_coords[vert_index].mul(weight);
			mesh_coords[vert_index].add(delta_coords[vert_index]);

			mesh_tex_coords[vert_index]       += delta_tex_coords[vert_index] * weight;

			delta_normals[vert_index].mul(weight * NORMAL_SOFTEN_FACTOR);
			mesh_scaled_normals[vert_index].add(delta_normals[vert_index]);
			
			LLVector4a normalized_normal       = mesh_scaled_normals[vert_index];
			normalized_normal.normalize3();
			mesh_normals[vert_index]           = normalized_normal;

			delta_binormals[vert_index].mul(weight * NORMAL_SOFTEN_FACTOR);
			mesh_scaled_binormals[vert_index].add(delta_binormals[vert_index]);

			LLVector4a tangent;
			tangent.setCross3(mesh_scaled_binormals[vert_index], normalized_normal);
			LLVector4a normalized_binormal;
			normalized_binormal.setCross3(normalized_normal, tangent);
			normalized_binormal.normalize3();
			mesh_binormals[vert_index]         = normalized_binormal;
		}

		avatarp->dirtyMesh();
	}

	//-------------------------------------------------------------------------
	// reallocate vertices
	//-------------------------------------------------------------------------
	delete [] mVertexIndices;
	delete [] mCoords;
	delete [] mNormals;
	delete [] mBinormals;
	delete [] mTexCoords;

	mVertexIndices = new_vertex_indices;
	mCoords        = new_coords;
	mNormals       = new_normals;
	mBinormals     = new_binormals;
	mTexCoords     = new_tex_coords;
	mNumIndices    = nindices;

	return TRUE;
}