//----------------------------------------------------------------------------
bool SkinController::Update (double applicationTime)
{
if (!Controller::Update(applicationTime))
{
return false;
}
// 获得要访问的VertexBuffer
Renderable* renderable = StaticCast<Renderable>(mObject);
assertion(mNumVertices == renderable->GetVertexBuffer()->GetNumElements(),
"Controller must have the same number of vertices as the buffer\n");
VertexBufferAccessor vba(renderable);
// skin中的网格的顶点在网格的坐标系（世界坐标系）中。mOffsets记录顶点相对各
// 个骨骼的位置，左乘骨骼变换矩阵得到该骨骼下的网格坐标系位置。
renderable->WorldTransform = Transform::IDENTITY;
renderable->WorldTransformIsCurrent = true;
// 计算skin顶点位置
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;
}
renderable->UpdateModelSpace(Renderable::GU_NORMALS);
Renderer::UpdateAll(renderable->GetVertexBuffer());
return true;
}
//----------------------------------------------------------------------------
bool SkinController::Update(double applicationTime, double elapsedTime)
{
if (!Controller::Update(applicationTime, elapsedTime))
{
return false;
}
// 获得要访问的VertexBuffer
Renderable* renderable = StaticCast<Renderable>(mObject);
renderable->WorldTransform = Transform::IDENTITY;
renderable->WorldTransformIsCurrent = true;
renderable->IsSkinCtrlSetWroldTrans = true;
if (mIsUseCPU)
{
assertion(mNumVertices == renderable->GetVertexBuffer()->GetNumElements(),
"Controller must have the same number of vertices as the buffer\n");
VertexBufferAccessor vba(renderable);
if (!mOriginPoses)
{
mOriginPoses = new1<APoint>(mNumVertices);
for (int vertex=0; vertex<mNumVertices; ++vertex)
{
mOriginPoses[vertex] = vba.Position<Float3>(vertex);
}
}
// skin中的网格的顶点在网格的坐标系（世界坐标系）中。mOffsets记录顶点相对各
// 个骨骼的位置，左乘骨骼变换矩阵得到该骨骼下的网格坐标系位置。
// 计算skin顶点位置
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;
worldOffset = mBones[bone]->WorldTransform*offset;
position += weight*worldOffset;
}
}
vba.Position<Float3>(vertex) = position;
}
//renderable-> (Renderable::GU_NORMALS);
Renderer::UpdateAll(renderable->GetVertexBuffer());
}
else
{
for (int bone = 0; bone < mNumBones; ++bone)
{
if (mBones[bone])
{
const HMatrix &boneMat = mBones[bone]->WorldTransform.Matrix();
mGPUMatrixs[bone] = boneMat * mTMMatrixs[bone];
}
}
}
return true;
}