About
A NormalTag stores normal vectors for a (polygon) object. For each polygon a set of four vectors is stored (NormalStruct). The class NormalTag is based on VariableTag so the typical workflows on handling tags apply, see BaseTag and VariableTag Manual.
NormalTag objects are an instance of Tnormal
.
Allocation/Deallocation
NormalTag instances are created with the usual tools.
if (normalTag == nullptr)
{
if (normalTag == nullptr)
}
Edit
The normal vectors stored in a NormalTag are accessed by obtaining data handles that are used with static functions:
{
if (phongTag == nullptr)
}
for (
Int32 i = 0; i < polygonCount; ++i)
{
normal.
x += ((random.
Get01() * 0.2) - 0.1);
normal.
y += ((random.
Get01() * 0.2) - 0.1);
normal.
z += ((random.
Get01() * 0.2) - 0.1);
}
Further Reading
#define Tnormal
Definition: ge_prepass.h:1266
constexpr void Normalize()
Normalizes this vector, so that GetLength()==1.0.
Definition: vec.h:431
#define Tphong
Phong.
Definition: ge_prepass.h:1234
Represents a polygon that can be either a triangle or a quadrangle.
Definition: c4d_baseobject.h:43
Definition: c4d_basetag.h:46
#define MAXON_SOURCE_LOCATION
Definition: memoryallocationbase.h:66
static void Set(NormalHandle dataptr, Int32 i, const NormalStruct &s)
Definition: c4d_basetag.h:627
BaseTag * MakeTag(Int32 type, BaseTag *pred=nullptr)
#define MSG_UPDATE
Must be sent if the bounding box has to be recalculated. (Otherwise use MSG_CHANGE....
Definition: c4d_baselist.h:340
Vector d
The vertex normal for the fourth point.
Definition: operatingsystem.h:625
Int32 GetPolygonCount(void) const
Definition: c4d_baseobject.h:1752
static NormalTag * Alloc(Int32 count)
Represents a Point Normal tag.
Definition: c4d_basetag.h:557
Vector b
The vertex normal for the second point.
Definition: operatingsystem.h:623
maxon::Int32 Int32
Definition: ge_sys_math.h:58
Bool Message(Int32 type, void *data=nullptr)
Definition: c4d_baselist.h:1394
Vector a
The vertex normal for the first point.
Definition: operatingsystem.h:622
BaseTag * GetTag(Int32 type, Int32 nr=0)
Definition: c4d_baseobject.h:674
NormalHandle GetDataAddressW(void)
void * NormalHandle
Handle for normal data. See also: NormalTag.
Definition: operatingsystem.h:454
Definition: c4d_tools.h:811
Definition: operatingsystem.h:591
void InsertTag(BaseTag *tp, BaseTag *pred=nullptr)
Vector c
The vertex normal for the third point.
Definition: operatingsystem.h:624
Vector CalcFaceNormal(const Vector *padr, const CPolygon &v)
Definition: c4d_baseobject.h:2185