glNormal3d function
Sets the current normal vector.
Syntax
void WINAPI glNormal3d(
GLdouble nx,
GLdouble ny,
GLdouble nz
);
Parameters
-
nx
-
Specifies the x-coordinate for the new current normal vector.
-
ny
-
Specifies the y-coordinate for the new current normal vector.
-
nz
-
Specifies the z-coordinate for the new current normal vector.
Return value
This function does not return a value.
Remarks
The current normal is set to the given coordinates whenever you call the glNormal3dfunction.
Byte, short, or integer arguments are converted to floating-point format by using a linear mapping that maps the most positive representable integer value to 1.0, and the most negative representable integer value to -1.0.
Normals specified by usingglNormal3d need not have unit length. If normalization is enabled, then normals specified with glNormal3d are normalized after transformation. You can control normalization by using glEnable and glDisable with the argument GL_NORMALIZE. By default, normalization is disabled. You can update the current normal at any time. In particular, you can callglNormal3dbetween a call to glBegin and the corresponding call to glEnd. The following functions retrieve information related to glNormal3d:
glGet with argument GL_CURRENT_NORMAL
glIsEnable with argument GL_NORMALIZE
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows 2000 Professional [desktop apps only] |
| Minimum supported server |
Windows 2000 Server [desktop apps only] |
| Header |
|
| Library |
|
| DLL |
|