D3DXVEC2CCW function
Returns the Z component of two 2-D vector fork.
definition:
FLOAT D3DXVEC2CCW (
Const d3dxvector2 * pv1,
Const d3dxvector2 * pv2
);
parameter:
PV1
[in] Point the source vector of the D3DxVector2 structure.
PV2
[in] Point the source vector of the D3DxVector2 structure.
return value:
The z component of two 2-D vector forks.
Description:
This function returns the z component result by calculating two vectors of two vectors. Use the following formula: ((x1, y1, 0) fork (X2, Y2, 0)). The results are calculated as follows:
PV1-> x * pv2-> y - pv1-> y * pv2-> x
If the z component result is positive, the vector V2 direction is to rotate in the vector V1 counterclockwise. This result is very useful for cropping.
Function information:
HEADER
D3DX9Math.h
Import Library
D3DX9.LIB
Minimum operation systems
WINDOWS 98
related functions:
D3DXVEC2DOT
