Cross Product (dcu_calcdir.dll)

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Cross Product (dcu_calcdir.dll)

There is often a need to define a vector direction when using irregular surfaces. Examples of use include such applications as calculating:

•panel trim edge vectors,

•clearance direction vectors between two components of irregular variation/shape.

This module provides the routines related with direction manipulation. The purpose of this routine is to apply a calculated vector direction to a set of points.  The calculated direction is the vector cross-product of two input directions.

 

 

Within this Section:

Cross Product (dcsCrossProduct) - now found under the Cross Product move.

Move Set Direction (dcsMvSetDirection)

Double Cross Product (ABA) (dcsMvDirProj2Plane)

Dot Product (dcsMsDotProduct)

 

 

1. hmtoggle_arrow1 Move Set Direction (dcsMvSetDirection)

 

Description: This routine is to apply a specified direction on all object features.

 

Inputs

Object Features: feature directions to be modified

Target Features: if Associated Directions are used

Direction: at least one direction is required

Output

Object Feature Directions are modified based on the specified directions. Multiple directions are supported.

 

2. hmtoggle_arrow1 Double Cross Product (ABA) (dcsMvDirProj2Plane)

 

Description: This routine is to project a skewed direction to a plane by double-cross-product (DIR = DIR1xDIR2xDIR1).

 

Inputs:

Object Features: feature directions to be modified

Target Features: used when Associated Directions are used

Direction: at least two direction are required

Output

Object Feature Directions are modified based on the calculated direction (DIR = DIR1xDIR2xDIR1). Multiple paired directions (each pair of directions for one object feature) are supported.

 

 

3. hmtoggle_arrow1 Dot Product (dcsMsDotProduct)

 

Description: This measure routine is to calculate the dot product from two directions (DotProd = DIR1*DIR2). Dot Product in 3DCS is equivalent to the cosine of the smallest angle between them.

 

Inputs:

Object Features (Group 1): Two features are only necessary if either of the directions being used is an Associated type

Target Features (Group 2): Not required, ignored

Direction: Two Directions are required

Output:

Calculates the dot product from two directions. (DotProd = DIR1*DIR2).