// *********************************************************
void CPrimRender::updateEdgeDecal(CDecal &edgeDecal, const NLMISC::CVector &start, const NLMISC::CVector &end, float distToStartVertex, float distToEndVertex)
{
//H_AUTO(R2_CPrimRender_updateEdgeDecal)
CVector2f start2f(start.x, start.y);
CVector2f end2f(end.x, end.y);
// compute real start coordinate that is at 'startRadius' dist from the 'start' pos
float length = (end2f - start2f).norm();
if ((distToStartVertex + distToEndVertex) >= length)
{
CMatrix nullMat;
nullMat.setScale(0.f);
// decal not visible
edgeDecal.setWorldMatrix(nullMat);
return;
}
CVector dirNormed = (end2f - start2f) / length;
start2f = start2f + distToStartVertex * dirNormed;
end2f = end2f - distToEndVertex * dirNormed;
edgeDecal.setWorldMatrixForArrow(start2f, end2f, _Look.EdgeLook.DecalWidth);
CMatrix uvMatrix;
float uScale = _Look.EdgeLook.DecalUScale * (length - (distToStartVertex + distToEndVertex));
uvMatrix.setScale(CVector(uScale, 1.f, 1.f));
switch(_Look.EdgeLook.DecalWrapMode)
{
case CEdgeLook::Scaled:
case CEdgeLook::Repeat:
break;
case CEdgeLook::Centered:
uvMatrix.setPos(CVector(0.5f * (1.f - uScale), 0.f, 0.f));
break;
default:
nlassert(0);
break;
}
edgeDecal.setTextureMatrix(uvMatrix);
}
