deformation Class Reference

The deformation JavaScript global object. Provide deformation node parent matrix transformations. More...

Public Slots
Matrix4x4 *	lastDeformMatrix (String &node, int frame)
Matrix4x4 *	nextDeformMatrix (String &node, int frame)
Matrix4x4 *	lastRestMatrix (String &node)
Matrix4x4 *	nextRestMatrix (String &node)

Detailed Description

The deformation JavaScript global object. Provide deformation node parent matrix transformations.

Node interface specific to deformation networks.

function correctBoneMatrixFromPrevBone(prevBone, startMatrix, prevMatrix)
{
  var correctedMatrix = bones[prevBone];
  if(correctedMatrix)
        {
                // override startMatrix and prevMatrix with prevbone correction
                startMatrix.clear();
                prevMatrix.clear();
                startMatrix.multiplyEq(correctedMatrix);
                prevMatrix.multiplyEq(correctedMatrix);
        }
}

function correctBoneLength(nodeName, restLength, restOrientation, minLength, startMatrix, endMatrix)
{
        
        if(restLength < minLength)
        {
                var lengthOffset = new Vector2d(minLength, 0);
                lengthOffset = scene.toOGL(lengthOffset);

                // redo matrix
                endMatrix.clear();
                endMatrix.multiplyEq(startMatrix);
                endMatrix.rotateDegrees(restOrientation, new Vector3d(0,0,1));
                endMatrix.translate(lengthOffset.x, lengthOffset.y, 0.0);

                bones[nodeName] = new Matrix4x4().multiply(endMatrix);
        }
}

function correctDeformBone(prevBone, nodeName, nextBone, startMatrix, endMatrix, prevMatrix, i)
{
  if(prevBone != "")
  {
    var nodeNameKey = nodeName+i.toString();
    var prevBoneKey = prevBone+i.toString();

    var length = Number(node.getTextAttr( nodeName, i, "length" ));
    var radius = Number(node.getTextAttr( nodeName, i, "radius" ));
    var orientation = Number(node.getTextAttr( nodeName, i, "orientation" ));
    var nextBoneRadius = nextBone != "" ? Number(node.getTextAttr( nextBone, i, "radius" )) : 0.0;
    var minLength = radius + nextBoneRadius + 1/32;

    correctBoneMatrixFromPrevBone(prevBoneKey, startMatrix, prevMatrix);
    correctBoneLength(nodeNameKey, length, orientation, minLength, startMatrix, endMatrix);
  }
}

 startMatrix = deformation.lastDeformMatrix( nodeName, 0 );
 endMatrix = deformation.nextDeformMatrix( nodeName, 0 );
 prevMatrix = ( prevBone != "" ) ? deformation.nextDeformMatrix( prevBone, 0 ) : (new Matrix4x4());

 correctDeformBone(prevBone, nodeName, nextBone, startMatrix, endMatrix, prevMatrix, i);

Member Function Documentation

lastDeformMatrix

Matrix4x4* deformation::lastDeformMatrix ( String &  node, int  frame  )

slot

lastRestMatrix

Matrix4x4* deformation::lastRestMatrix ( String &  node )

slot

nextDeformMatrix

Matrix4x4* deformation::nextDeformMatrix ( String &  node, int  frame  )

slot

nextRestMatrix

Matrix4x4* deformation::nextRestMatrix ( String &  node )

slot