//-----------------------------------------------------------------------
void Extruder::_extrudeCapImpl(TriangleBuffer& buffer) const
{
std::vector<int> indexBuffer;
PointList pointList;
buffer.rebaseOffset();
Triangulator t;
if (mShapeToExtrude)
t.setShapeToTriangulate(mShapeToExtrude);
else
t.setMultiShapeToTriangulate(mMultiShapeToExtrude);
t.triangulate(indexBuffer, pointList);
buffer.estimateIndexCount(2*indexBuffer.size());
buffer.estimateVertexCount(2*pointList.size());
//begin cap
buffer.rebaseOffset();
Quaternion qBegin = Utils::_computeQuaternion(mExtrusionPath->getDirectionAfter(0));
if (mRotationTrack)
{
Real angle = mRotationTrack->getFirstValue();
qBegin = qBegin*Quaternion((Radian)angle, Vector3::UNIT_Z);
}
Real scaleBegin=1.;
if (mScaleTrack)
scaleBegin = mScaleTrack->getFirstValue();
for (size_t j =0;j<pointList.size();j++)
{
Vector2 vp2 = pointList[j];
Vector3 vp(vp2.x, vp2.y, 0);
Vector3 normal = -Vector3::UNIT_Z;
Vector3 newPoint = mExtrusionPath->getPoint(0)+qBegin*(scaleBegin*vp);
addPoint(buffer, newPoint,
qBegin*normal,
vp2);
}
for (size_t i=0;i<indexBuffer.size()/3;i++)
{
buffer.index(indexBuffer[i*3]);
buffer.index(indexBuffer[i*3+2]);
buffer.index(indexBuffer[i*3+1]);
}
// end cap
buffer.rebaseOffset();
Quaternion qEnd = Utils::_computeQuaternion(mExtrusionPath->getDirectionBefore(mExtrusionPath->getSegCount()));
if (mRotationTrack)
{
Real angle = mRotationTrack->getLastValue();
qEnd = qEnd*Quaternion((Radian)angle, Vector3::UNIT_Z);
}
Real scaleEnd=1.;
if (mScaleTrack)
scaleEnd = mScaleTrack->getLastValue();
for (size_t j =0;j<pointList.size();j++)
{
Vector2 vp2 = pointList[j];
Vector3 vp(vp2.x, vp2.y, 0);
Vector3 normal = Vector3::UNIT_Z;
Vector3 newPoint = mExtrusionPath->getPoint(mExtrusionPath->getSegCount())+qEnd*(scaleEnd*vp);
addPoint(buffer, newPoint,
qEnd*normal,
vp2);
}
for (size_t i=0;i<indexBuffer.size()/3;i++)
{
buffer.index(indexBuffer[i*3]);
buffer.index(indexBuffer[i*3+1]);
buffer.index(indexBuffer[i*3+2]);
}
}
//-----------------------------------------------------------------------
void Lathe::_latheCapImpl(TriangleBuffer& buffer) const
{
std::vector<int> indexBuffer;
PointList pointList;
buffer.rebaseOffset();
Triangulator t;
Shape shapeCopy;
MultiShape multishapeCopy;
if (mShapeToExtrude)
{
shapeCopy = *mShapeToExtrude;
shapeCopy.close();
t.setShapeToTriangulate(&shapeCopy);
}
else
{
multishapeCopy = *mMultiShapeToExtrude;
multishapeCopy.close();
t.setMultiShapeToTriangulate(mMultiShapeToExtrude);
}
t.triangulate(indexBuffer, pointList);
buffer.estimateIndexCount(2*indexBuffer.size());
buffer.estimateVertexCount(2*pointList.size());
//begin cap
buffer.rebaseOffset();
Quaternion q;
q.FromAngleAxis(mAngleBegin, Vector3::UNIT_Y);
for (size_t j =0;j<pointList.size();j++)
{
Vector2 vp2 = pointList[j];
Vector3 vp(vp2.x, vp2.y, 0);
Vector3 normal = Vector3::UNIT_Z;
addPoint(buffer, q*vp,
q*normal,
vp2);
}
for (size_t i=0;i<indexBuffer.size()/3;i++)
{
buffer.index(indexBuffer[i*3]);
buffer.index(indexBuffer[i*3+1]);
buffer.index(indexBuffer[i*3+2]);
}
//end cap
buffer.rebaseOffset();
q.FromAngleAxis(mAngleEnd, Vector3::UNIT_Y);
for (size_t j =0;j<pointList.size();j++)
{
Vector2 vp2 = pointList[j];
Vector3 vp(vp2.x, vp2.y, 0);
Vector3 normal = -Vector3::UNIT_Z;
addPoint(buffer, q*vp,
q*normal,
vp2);
}
for (size_t i=0;i<indexBuffer.size()/3;i++)
{
buffer.index(indexBuffer[i*3]);
buffer.index(indexBuffer[i*3+2]);
buffer.index(indexBuffer[i*3+1]);
}
}
