Synopsis
This design describes a ray object with a direction vector and a start point. Ray parts are displayed as a line segment to indicate their direction and the start of the line segment indicates its position.
Mixins
InkStrokedMixin
RenderMixin
AssemblyMixin
BaseDesign
Parameters
| Name |
Type |
Description |
|---|
| origin |
point |
Origin point used to describe the ray's location. |
| direction |
vector |
Vector used to describe the ray's orientation. |
| length |
number |
Length of line representing the ray. |
At points of zero curvature - such as any point on a line, inflection points of splines, or ends of certain fitted splines - the normal( ) and binormal( ) vectors are undefined or ambiguous. In these cases, it is common to get zero or near-zero vectors returned. Such vectors are likely to cause degenerate geometry or other errors when used in other calculations. It may be necessary to anticipate and handle such cases appropriately for the particular intended use.
Example 1
| Name: |
Ray_Ex01
|
| Design: |
Curves AcDrawingDocument
|
| Child Name: |
origin
|
| Child Design: |
:Sphere
|
|
Name
|
Type
|
Supplied
|
| center |
point |
Point(0, 0, 0) |
| radius |
number |
0.2 |
| color |
string |
"blue" |
| Child Name: |
outset
|
| Child Design: |
:Sphere
|
|
Name
|
Type
|
Supplied
|
| center |
point |
Point(7, 1, 3) |
| radius |
number |
0.2 |
| color |
string |
"jungle green" |
| Child Name: |
Ray
|
| Child Design: |
:Ray
|
|
Name
|
Type
|
Supplied
|
| direction |
vector |
outset.center - origin.center |
| origin |
point |
origin.center |
Example 2
| Name: |
Ray_Ex02
|
| Design: |
Curves AcDrawingDocument
|
|
Name
|
Type
|
Formula
|
| segmentQty |
integer |
14 |
| pointList |
list |
Dim i As Integer = 0
Dim result as List = {}
For i = 1 To (segmentQty - 1)
result = result + {curve.pointAtLength(i * curve.length / segmentQty)}
Next i
Return result
|
| Child Name: |
curve
|
| Child Design: |
:SplineCurve
|
|
Name
|
Type
|
Supplied
|
| pointList |
list |
{Point(0, -1, 0), Point(2, 1, 0), Point(2, 3, 0), Point(5, 0, 0)} |
| color |
string |
"blue" |
| Child Name: |
biNormal
|
 Child List? |
| Child Design: |
:Ray
|
|
Name
|
Type
|
Supplied
|
| direction |
vector |
curve.biNormal(nth(Child.index, pointList)) |
| origin |
point |
nth(Child.index, pointList) |
| Quantity |
integer |
length(pointList) |
| Child Name: |
pt
|
| Child Design: |
:Point
|
| Child List? |
|
Name
|
Type
|
Supplied
|
| origin |
point |
nth(Child.index, pointList) |
| color |
string |
"red" |
| Quantity |
integer |
length(pointList) |
Example 3
| Name: |
Ray_Ex03
|
| Design: |
Curves AcDrawingDocument
|
|
Name
|
Type
|
Formula
|
| segmentQty |
integer |
14 |
| pointList |
list |
Dim i As Integer = 0 Dim result as List = {} For i = 1 To (segmentQty - 1) result = result + {curve.pointAtLength(i * curve.length / segmentQty)} Next i Return result |
| Child Name: |
curve
|
| Child Design: |
:SplineCurve
|
|
Name
|
Type
|
Supplied
|
| pointList |
list |
{Point(0, -1, 0), Point(2, 1, 0), Point(2, 3, 0), Point(5, 0, 0)} |
| color |
string |
"olive green" |
| Child Name: |
normal
|
| Child Design: |
:Ray
|
| Child List? |
|
Name
|
Type
|
Supplied
|
| direction |
vector |
curve.normal(nth(Child.index, pointList)) |
| origin |
point |
nth(Child.index, pointList) |
| Quantity |
integer |
length(pointList) |
| Child Name: |
pt
|
| Child Design: |
:Point
|
| Child List? |
|
Name
|
Type
|
Supplied
|
| origin |
point |
nth(Child.index, pointList) |
| color |
string |
"blue" |
| Quantity |
integer |
length(pointList) |
