Returns a frame with origin, the positive X direction along xdir. The vectors xdir and ydir will lie on the XY plane of the frame , and the direction of positive Y is derived from ydir.
Frames define coordinate systems. There is a transformation matrix associated with a frame , which transforms geometry defined in the "world" coordinate system to the local coordinate system.
frameXY ( origin As Point, _
xdir As Vector, _
ydir As Frame ) As Frame
| Argument | Type | Description |
|---|---|---|
| origin | Point | origin point of frame |
| xdir | Vector | X direction vector of frame |
| ydir | Frame | To determine Y direction vector of frame |