//----------------------------------------------------------------------------
bool MorphController::Update (double applicationTime)
{
// The key interpolation uses linear interpolation. To get higher-order
// interpolation, you need to provide a more sophisticated key (Bezier
// cubic or TCB spline, for example).
if (!Controller::Update(applicationTime))
{
return false;
}
// Get access to the vertex buffer to store the blended targets.
Visual* visual = StaticCast<Visual>(mObject);
assertion(visual->GetVertexBuffer()->GetNumElements() == mNumVertices,
"Mismatch in number of vertices.\n");
VertexBufferAccessor vba(visual);
// Set vertices to target[0].
APoint* baseTarget = mVertices[0];
int i;
for (i = 0; i < mNumVertices; ++i)
{
vba.Position<Float3>(i) = baseTarget[i];
}
// Look up the bounding keys.
float ctrlTime = (float)GetControlTime(applicationTime);
float normTime;
int i0, i1;
GetKeyInfo(ctrlTime, normTime, i0, i1);
// Add the remaining components in the convex composition.
float* weights0 = mWeights[i0];
float* weights1 = mWeights[i1];
for (i = 1; i < mNumTargets; ++i)
{
// Add in the delta-vertices of target[i].
float coeff = (1.0f-normTime)*weights0[i-1] + normTime*weights1[i-1];
AVector* target = (AVector*)mVertices[i];
for (int j = 0; j < mNumVertices; ++j)
{
APoint position = vba.Position<Float3>(j);
position += coeff*target[j];
vba.Position<Float3>(j) = position;
}
}
visual->UpdateModelSpace(Visual::GU_NORMALS);
Renderer::UpdateAll(visual->GetVertexBuffer());
return true;
}
//----------------------------------------------------------------------------
bool SkinController::Update (double applicationTime)
{
if (!Controller::Update(applicationTime))
{
return false;
}
// Get access to the vertex buffer to store the blended targets.
Visual* visual = StaticCast<Visual>(mObject);
assertion(mNumVertices == visual->GetVertexBuffer()->GetNumElements(),
"Controller must have the same number of vertices as the buffer\n");
VertexBufferAccessor vba(visual);
// The skin vertices are calculated in the bone world coordinate system,
// so the visual's world transform must be the identity.
visual->WorldTransform = Transform::IDENTITY;
visual->WorldTransformIsCurrent = true;
// Compute the skin vertex locations.
for (int vertex = 0; vertex < mNumVertices; ++vertex)
{
APoint position = APoint::ORIGIN;
for (int bone = 0; bone < mNumBones; ++bone)
{
float weight = mWeights[vertex][bone];
if (weight != 0.0f)
{
APoint offset = mOffsets[vertex][bone];
APoint worldOffset = mBones[bone]->WorldTransform*offset;
position += weight*worldOffset;
}
}
vba.Position<Float3>(vertex) = position;
}
visual->UpdateModelSpace(Visual::GU_NORMALS);
Renderer::UpdateAll(visual->GetVertexBuffer());
return true;
}
